refactor(session): simplify pending withdrawal

bun.lock

@@ -67,7 +67,6 @@
         "@opencode-ai/sdk": "file:vendor/opencode-ai-sdk-1.18.8-dev.tgz",
         "@opencode-ai/session-ui": "workspace:*",
         "@opencode-ai/ui": "workspace:*",
-        "@opencode-ai/util": "workspace:*",
         "@pierre/trees": "1.0.0-beta.4",
         "@sentry/solid": "catalog:",
         "@shikijs/transformers": "3.9.2",
@@ -521,7 +520,6 @@
         "@opencode-ai/core": "workspace:*",
         "@opencode-ai/session-ui": "workspace:*",
         "@opencode-ai/ui": "workspace:*",
-        "@opencode-ai/util": "workspace:*",
         "@pierre/diffs": "catalog:",
         "@solidjs/meta": "catalog:",
         "@solidjs/router": "catalog:",

packages/ai/AGENTS.md

@@ -12,8 +12,6 @@
 
 Per-type constructors live on the type, not as top-level re-exports. Use `Message.system(...)`, `Message.user(...)`, `Message.assistant(...)`, `Message.tool(...)`, `Model.make(...)`, `ToolDefinition.make(...)`, `ToolCallPart.make(...)`, `ToolResultPart.make(...)`, `ToolChoice.make(...)`, `ToolChoice.named(...)`, `SystemPart.make(...)`, and `GenerationOptions.make(...)` directly. The top-level `LLM` namespace is reserved for request-shaped call APIs: `LLM.request`, `LLM.generate`, `LLM.stream`, `LLM.updateRequest`, and `LLM.generateObject`. Two ways to construct the same thing is one too many.
 
-- Keep provider-defined string enums forward-compatible. Expose known values for autocomplete while accepting future values with `Known | (string & {})`; use `Schema.String` at runtime unless rejecting unknown values is required for correctness.
-
 ## Tests
 
 - Use `testEffect(...)` from `test/lib/effect.ts` for tests requiring Effect layers.

packages/ai/src/cache-policy.ts

@@ -38,7 +38,7 @@ const resolve = (policy: CachePolicy | undefined): CachePolicyObject => {
 // Protocols whose wire format ignores inline cache markers (OpenAI's implicit
 // prefix caching, Gemini's implicit + out-of-band CachedContent). Skip the
 // whole policy pass for these — emitting hints would be harmless but pointless.
-const RESPECTS_INLINE_HINTS = new Set(["anthropic-messages", "bedrock-converse", "openrouter"])
+const RESPECTS_INLINE_HINTS = new Set(["anthropic-messages", "bedrock-converse"])
 
 const makeHint = (ttlSeconds: number | undefined): CacheHint =>
   ttlSeconds !== undefined ? new CacheHint({ type: "ephemeral", ttlSeconds }) : new CacheHint({ type: "ephemeral" })
@@ -133,7 +133,6 @@ const countHints = (request: LLMRequest) =>
 
 export const applyCachePolicy = (request: LLMRequest): LLMRequest => {
   if (!RESPECTS_INLINE_HINTS.has(request.model.route.id)) return request
-  if (request.model.route.id === "openrouter" && (request.cache === undefined || request.cache === "auto")) return request
   const policy = resolve(request.cache)
   if (!policy.tools && !policy.system && !policy.messages) return request
 

packages/ai/src/protocols/gemini.ts

@@ -29,30 +29,9 @@ export const DEFAULT_BASE_URL = "https://generativelanguage.googleapis.com/v1bet
 
 export interface OptionsInput {
   readonly [key: string]: unknown
-  readonly cachedContent?: string
-  readonly safetySettings?: ReadonlyArray<{
-    readonly category:
-      | "HARM_CATEGORY_UNSPECIFIED"
-      | "HARM_CATEGORY_HATE_SPEECH"
-      | "HARM_CATEGORY_DANGEROUS_CONTENT"
-      | "HARM_CATEGORY_HARASSMENT"
-      | "HARM_CATEGORY_SEXUALLY_EXPLICIT"
-      | "HARM_CATEGORY_CIVIC_INTEGRITY"
-      | (string & {})
-    readonly threshold:
-      | "HARM_BLOCK_THRESHOLD_UNSPECIFIED"
-      | "BLOCK_LOW_AND_ABOVE"
-      | "BLOCK_MEDIUM_AND_ABOVE"
-      | "BLOCK_ONLY_HIGH"
-      | "BLOCK_NONE"
-      | "OFF"
-      | (string & {})
-  }>
-  readonly serviceTier?: "standard" | "flex" | "priority" | (string & {})
   readonly thinkingConfig?: {
     readonly thinkingBudget?: number
     readonly includeThoughts?: boolean
-    readonly thinkingLevel?: "minimal" | "low" | "medium" | "high" | (string & {})
   }
 }
 
@@ -132,12 +111,6 @@ const GeminiToolConfig = Schema.Struct({
 const GeminiThinkingConfig = Schema.Struct({
   thinkingBudget: Schema.optional(Schema.Number),
   includeThoughts: Schema.optional(Schema.Boolean),
-  thinkingLevel: Schema.optional(Schema.String),
-})
-
-const GeminiSafetySetting = Schema.Struct({
-  category: Schema.String,
-  threshold: Schema.String,
 })
 
 const GeminiGenerationConfig = Schema.Struct({
@@ -150,10 +123,7 @@ const GeminiGenerationConfig = Schema.Struct({
 })
 
 const GeminiBodyFields = {
-  cachedContent: Schema.optional(Schema.String),
   contents: Schema.Array(GeminiContent),
-  safetySettings: optionalArray(GeminiSafetySetting),
-  serviceTier: Schema.optional(Schema.String),
   systemInstruction: Schema.optional(GeminiSystemInstruction),
   tools: optionalArray(GeminiTool),
   toolConfig: Schema.optional(GeminiToolConfig),
@@ -346,38 +316,17 @@ const lowerMessages = Effect.fn("Gemini.lowerMessages")(function* (request: LLMR
 })
 
 const resolveOptions = (request: LLMRequest) => {
-  const input = request.providerOptions?.gemini
-  const value = input?.thinkingConfig
+  const value = request.providerOptions?.gemini?.thinkingConfig
+  if (!ProviderShared.isRecord(value)) return {}
   const thinkingConfig = {
-    thinkingBudget:
-      ProviderShared.isRecord(value) && typeof value.thinkingBudget === "number" ? value.thinkingBudget : undefined,
-    includeThoughts:
-      ProviderShared.isRecord(value) && typeof value.includeThoughts === "boolean"
-        ? value.includeThoughts
-        : ProviderShared.isRecord(value)
-          ? true
-          : undefined,
-    thinkingLevel:
-      ProviderShared.isRecord(value) && typeof value.thinkingLevel === "string" ? value.thinkingLevel : undefined,
+    thinkingBudget: typeof value.thinkingBudget === "number" ? value.thinkingBudget : undefined,
+    includeThoughts: typeof value.includeThoughts === "boolean" ? value.includeThoughts : undefined,
   }
   return {
-    cachedContent: typeof input?.cachedContent === "string" ? input.cachedContent : undefined,
-    safetySettings: mapSafetySettings(input?.safetySettings),
-    serviceTier: typeof input?.serviceTier === "string" ? input.serviceTier : undefined,
     thinkingConfig: Object.values(thinkingConfig).some((item) => item !== undefined) ? thinkingConfig : undefined,
   }
 }
 
-function mapSafetySettings(value: unknown) {
-  if (!Array.isArray(value)) return undefined
-  const settings = value.flatMap((item) =>
-    ProviderShared.isRecord(item) && typeof item.category === "string" && typeof item.threshold === "string"
-      ? [{ category: item.category, threshold: item.threshold }]
-      : [],
-  )
-  return settings
-}
-
 const fromRequest = Effect.fn("Gemini.fromRequest")(function* (request: LLMRequest) {
   const hasTools = request.tools.length > 0
   const generation = request.generation
@@ -393,10 +342,7 @@ const fromRequest = Effect.fn("Gemini.fromRequest")(function* (request: LLMReque
   }
 
   return {
-    cachedContent: options.cachedContent,
     contents: yield* lowerMessages(request),
-    safetySettings: options.safetySettings,
-    serviceTier: options.serviceTier,
     systemInstruction:
       request.system.length === 0 ? undefined : { parts: [{ text: ProviderShared.joinText(request.system) }] },
     tools: hasTools

packages/ai/src/protocols/openai-chat.ts

@@ -11,7 +11,6 @@ import {
   Usage,
   type FinishReason,
   type FinishReasonDetails,
-  type CacheHint,
   type JsonSchema,
   type LLMRequest,
   type MediaPart,
@@ -39,11 +38,6 @@ export const PATH = "/chat/completions"
 // The body schema is the provider-native JSON body. `fromRequest` below builds
 // this shape from the common `LLMRequest`, then `Route.make` validates and
 // JSON-encodes it before transport.
-const OpenAIChatCacheControl = Schema.Struct({
-  type: Schema.Literal("ephemeral"),
-  ttl: Schema.optional(Schema.String),
-})
-
 const OpenAIChatFunction = Schema.Struct({
   name: Schema.String,
   description: Schema.String,
@@ -53,7 +47,6 @@ const OpenAIChatFunction = Schema.Struct({
 const OpenAIChatTool = Schema.Struct({
   type: Schema.tag("function"),
   function: OpenAIChatFunction,
-  cache_control: Schema.optional(OpenAIChatCacheControl),
 })
 type OpenAIChatTool = Schema.Schema.Type<typeof OpenAIChatTool>
 
@@ -68,11 +61,7 @@ const OpenAIChatAssistantToolCall = Schema.Struct({
 type OpenAIChatAssistantToolCall = Schema.Schema.Type<typeof OpenAIChatAssistantToolCall>
 
 const OpenAIChatUserContent = Schema.Union([
-  Schema.Struct({
-    type: Schema.Literal("text"),
-    text: Schema.String,
-    cache_control: Schema.optional(OpenAIChatCacheControl),
-  }),
+  Schema.Struct({ type: Schema.Literal("text"), text: Schema.String }),
   Schema.Struct({
     type: Schema.Literal("image_url"),
     image_url: Schema.Struct({ url: Schema.String }),
@@ -80,10 +69,7 @@ const OpenAIChatUserContent = Schema.Union([
 ])
 
 const OpenAIChatMessage = Schema.Union([
-  Schema.Struct({
-    role: Schema.Literal("system"),
-    content: Schema.Union([Schema.String, Schema.Array(OpenAIChatUserContent)]),
-  }),
+  Schema.Struct({ role: Schema.Literal("system"), content: Schema.String }),
   Schema.Struct({
     role: Schema.Literal("user"),
     content: Schema.Union([Schema.String, Schema.Array(OpenAIChatUserContent)]),
@@ -97,16 +83,10 @@ const OpenAIChatMessage = Schema.Union([
       reasoning: Schema.optional(Schema.String),
       reasoning_text: Schema.optional(Schema.String),
       reasoning_details: Schema.optional(Schema.Unknown),
-      cache_control: Schema.optional(OpenAIChatCacheControl),
     }),
     [Schema.Record(Schema.String, Schema.Unknown)],
   ),
-  Schema.Struct({
-    role: Schema.Literal("tool"),
-    tool_call_id: Schema.String,
-    content: Schema.String,
-    cache_control: Schema.optional(OpenAIChatCacheControl),
-  }),
+  Schema.Struct({ role: Schema.Literal("tool"), tool_call_id: Schema.String, content: Schema.String }),
 ]).pipe(Schema.toTaggedUnion("role"))
 type OpenAIChatMessage = Schema.Schema.Type<typeof OpenAIChatMessage>
 
@@ -127,7 +107,6 @@ export const bodyFields = {
   stream_options: Schema.optional(Schema.Struct({ include_usage: Schema.Boolean })),
   store: Schema.optional(Schema.Boolean),
   reasoning_effort: Schema.optional(OpenAIOptions.OpenAIReasoningEffort),
-  max_completion_tokens: Schema.optional(Schema.Number),
   max_tokens: Schema.optional(Schema.Number),
   temperature: Schema.optional(Schema.Number),
   top_p: Schema.optional(Schema.Number),
@@ -230,20 +209,13 @@ export interface ParserState {
 // Lowering is the only place that knows how common LLM messages map onto the
 // OpenAI Chat wire format. Keep provider quirks here instead of leaking native
 // fields into `LLMRequest`.
-interface LoweringOptions {
-  readonly cacheControl?: (
-    cache: CacheHint | undefined,
-  ) => Schema.Schema.Type<typeof OpenAIChatCacheControl> | undefined
-}
-
-const lowerTool = (tool: ToolDefinition, inputSchema: JsonSchema, options: LoweringOptions): OpenAIChatTool => ({
+const lowerTool = (tool: ToolDefinition, inputSchema: JsonSchema): OpenAIChatTool => ({
   type: "function",
   function: {
     name: tool.name,
     description: tool.description,
     parameters: ToolSchemaProjection.openAI(inputSchema),
   },
-  cache_control: options.cacheControl?.(tool.cache),
 })
 
 const lowerToolChoice = (toolChoice: NonNullable<LLMRequest["toolChoice"]>) =>
@@ -285,14 +257,11 @@ const reasoningDetails = (parts: ReadonlyArray<ReasoningPart>, native: unknown)
   if (isRecord(native) && Array.isArray(native.reasoning_details)) return native.reasoning_details
 }
 
-const lowerUserMessage = Effect.fn("OpenAIChat.lowerUserMessage")(function* (
-  message: OpenAIChatRequestMessage,
-  options: LoweringOptions,
-) {
+const lowerUserMessage = Effect.fn("OpenAIChat.lowerUserMessage")(function* (message: OpenAIChatRequestMessage) {
   const content: Array<Schema.Schema.Type<typeof OpenAIChatUserContent>> = []
   for (const part of message.content) {
     if (part.type === "text") {
-      content.push({ type: "text", text: part.text, cache_control: options.cacheControl?.(part.cache) })
+      content.push({ type: "text", text: part.text })
       continue
     }
     if (part.type === "media") {
@@ -301,18 +270,14 @@ const lowerUserMessage = Effect.fn("OpenAIChat.lowerUserMessage")(function* (
     }
     return yield* ProviderShared.unsupportedContent("OpenAI Chat", "user", ["text", "media"])
   }
-  if (content.every((part) => part.type === "text" && part.cache_control === undefined))
-    return {
-      role: "user" as const,
-      content: content.map((part) => (part.type === "text" ? part.text : "")).join(""),
-    }
+  if (content.every((part) => part.type === "text"))
+    return { role: "user" as const, content: content.map((part) => part.text).join("") }
   return { role: "user" as const, content }
 })
 
 const lowerAssistantMessage = Effect.fn("OpenAIChat.lowerAssistantMessage")(function* (
   message: OpenAIChatRequestMessage,
   configuredField?: string,
-  options: LoweringOptions = {},
 ) {
   const content: TextPart[] = []
   const reasoning: ReasoningPart[] = []
@@ -350,44 +315,29 @@ const lowerAssistantMessage = Effect.fn("OpenAIChat.lowerAssistantMessage")(func
     if (reasoning.length === 0) return nativeReasoning
     return text
   })()
-  const cached = message.content.findLast((part) => "cache" in part && part.cache !== undefined)
   const result = {
     role: "assistant" as const,
     content: content.length === 0 ? null : ProviderShared.joinText(content),
     tool_calls: toolCalls.length === 0 ? undefined : toolCalls,
     reasoning_details: details,
-    cache_control: options.cacheControl?.(cached && "cache" in cached ? cached.cache : undefined),
   }
   if (field === undefined || reasoningText === undefined) return result
   return { ...result, [field]: reasoningText }
 })
 
-const lowerToolMessages = Effect.fn("OpenAIChat.lowerToolMessages")(function* (
-  message: OpenAIChatRequestMessage,
-  options: LoweringOptions,
-) {
+const lowerToolMessages = Effect.fn("OpenAIChat.lowerToolMessages")(function* (message: OpenAIChatRequestMessage) {
   const messages: OpenAIChatMessage[] = []
   const images: Array<Schema.Schema.Type<typeof OpenAIChatUserContent>> = []
   for (const part of message.content) {
     if (!ProviderShared.supportsContent(part, ["tool-result"]))
       return yield* ProviderShared.unsupportedContent("OpenAI Chat", "tool", ["tool-result"])
     if (part.result.type !== "content") {
-      messages.push({
-        role: "tool",
-        tool_call_id: part.id,
-        content: ProviderShared.toolResultText(part),
-        cache_control: options.cacheControl?.(part.cache),
-      })
+      messages.push({ role: "tool", tool_call_id: part.id, content: ProviderShared.toolResultText(part) })
       continue
     }
     const content: ReadonlyArray<Tool.Content> = part.result.value
     const text = content.filter((item) => item.type === "text").map((item) => item.text)
-    messages.push({
-      role: "tool",
-      tool_call_id: part.id,
-      content: text.join("\n"),
-      cache_control: options.cacheControl?.(part.cache),
-    })
+    messages.push({ role: "tool", tool_call_id: part.id, content: text.join("\n") })
     const files = content.filter((item) => item.type === "file")
     images.push(
       ...(yield* Effect.forEach(files, (item) =>
@@ -401,29 +351,15 @@ const lowerToolMessages = Effect.fn("OpenAIChat.lowerToolMessages")(function* (
 const lowerMessage = Effect.fn("OpenAIChat.lowerMessage")(function* (
   message: OpenAIChatRequestMessage,
   reasoningField?: string,
-  options: LoweringOptions = {},
 ) {
-  if (message.role === "user") return [yield* lowerUserMessage(message, options)]
-  if (message.role === "assistant") return [yield* lowerAssistantMessage(message, reasoningField, options)]
-  return (yield* lowerToolMessages(message, options)).messages
+  if (message.role === "user") return [yield* lowerUserMessage(message)]
+  if (message.role === "assistant") return [yield* lowerAssistantMessage(message, reasoningField)]
+  return (yield* lowerToolMessages(message)).messages
 })
 
-const lowerMessages = Effect.fn("OpenAIChat.lowerMessages")(function* (request: LLMRequest, options: LoweringOptions) {
+const lowerMessages = Effect.fn("OpenAIChat.lowerMessages")(function* (request: LLMRequest) {
   const system: OpenAIChatMessage[] =
-    request.system.length === 0
-      ? []
-      : request.system.some((part) => part.cache !== undefined) && options.cacheControl !== undefined
-        ? [
-            {
-              role: "system",
-              content: request.system.map((part) => ({
-                type: "text",
-                text: part.text,
-                cache_control: options.cacheControl?.(part.cache),
-              })),
-            },
-          ]
-        : [{ role: "system", content: ProviderShared.joinText(request.system) }]
+    request.system.length === 0 ? [] : [{ role: "system", content: ProviderShared.joinText(request.system) }]
   const messages = [...system]
   const pendingImages: Array<Schema.Schema.Type<typeof OpenAIChatUserContent>> = []
   const flushImages = () => {
@@ -434,53 +370,28 @@ const lowerMessages = Effect.fn("OpenAIChat.lowerMessages")(function* (request:
     if (message.role === "system") {
       const part = yield* ProviderShared.wrappedSystemUpdate("OpenAI Chat", message)
       if (pendingImages.length > 0) {
-        messages.push({
-          role: "user",
-          content: [
-            ...pendingImages.splice(0),
-            { type: "text", text: part.text, cache_control: options.cacheControl?.(part.cache) },
-          ],
-        })
+        messages.push({ role: "user", content: [...pendingImages.splice(0), { type: "text", text: part.text }] })
         continue
       }
       const previous = messages.at(-1)
       if (previous?.role === "user" && typeof previous.content === "string")
-        messages[messages.length - 1] = options.cacheControl?.(part.cache)
-          ? {
-              role: "user",
-              content: [
-                { type: "text", text: previous.content },
-                { type: "text", text: part.text, cache_control: options.cacheControl(part.cache) },
-              ],
-            }
-          : { role: "user", content: `${previous.content}\n${part.text}` }
+        messages[messages.length - 1] = { role: "user", content: `${previous.content}\n${part.text}` }
       else if (previous?.role === "user" && Array.isArray(previous.content))
         messages[messages.length - 1] = {
           role: "user",
-          content: [
-            ...previous.content,
-            { type: "text", text: part.text, cache_control: options.cacheControl?.(part.cache) },
-          ],
+          content: [...previous.content, { type: "text", text: part.text }],
         }
-      else
-        messages.push(
-          options.cacheControl?.(part.cache)
-            ? {
-                role: "user",
-                content: [{ type: "text", text: part.text, cache_control: options.cacheControl(part.cache) }],
-              }
-            : { role: "user", content: part.text },
-        )
+      else messages.push({ role: "user", content: part.text })
       continue
     }
     if (message.role === "tool") {
-      const lowered = yield* lowerToolMessages(message, options)
+      const lowered = yield* lowerToolMessages(message)
       messages.push(...lowered.messages)
       pendingImages.push(...lowered.images)
       continue
     }
     flushImages()
-    messages.push(...(yield* lowerMessage(message, request.model.compatibility?.reasoningField, options)))
+    messages.push(...(yield* lowerMessage(message, request.model.compatibility?.reasoningField)))
   }
   flushImages()
   return messages
@@ -494,10 +405,7 @@ const lowerOptions = (request: LLMRequest) => {
   }
 }
 
-export const fromRequest = Effect.fn("OpenAIChat.fromRequest")(function* (
-  request: LLMRequest,
-  options: LoweringOptions = {},
-) {
+const fromRequest = Effect.fn("OpenAIChat.fromRequest")(function* (request: LLMRequest) {
   // `fromRequest` returns the provider body only. Endpoint, auth, framing,
   // validation, and HTTP execution are composed by `Route.make`.
   const reasoningField = request.model.compatibility?.reasoningField
@@ -507,26 +415,19 @@ export const fromRequest = Effect.fn("OpenAIChat.fromRequest")(function* (
     )
   const generation = request.generation
   const toolSchemaCompatibility = request.model.compatibility?.toolSchema
-  const maxTokensField = request.model.compatibility?.maxTokensField ?? "max_tokens"
   return {
     model: request.model.id,
-    messages: yield* lowerMessages(request, options),
+    messages: yield* lowerMessages(request),
     tools:
       request.tools.length === 0
         ? undefined
         : request.tools.map((tool) =>
-            lowerTool(
-              tool,
-              ToolSchemaProjection.modelCompatibility(tool.inputSchema, toolSchemaCompatibility),
-              options,
-            ),
+            lowerTool(tool, ToolSchemaProjection.modelCompatibility(tool.inputSchema, toolSchemaCompatibility)),
           ),
     tool_choice: request.toolChoice ? yield* lowerToolChoice(request.toolChoice) : undefined,
     stream: true as const,
     stream_options: { include_usage: true },
-    ...(maxTokensField === "max_completion_tokens"
-      ? { max_completion_tokens: generation?.maxTokens }
-      : { max_tokens: generation?.maxTokens }),
+    max_tokens: generation?.maxTokens,
     temperature: generation?.temperature,
     top_p: generation?.topP,
     frequency_penalty: generation?.frequencyPenalty,

packages/ai/src/provider-package.ts

@@ -1,12 +1,10 @@
 import type { Model, ProviderOptions } from "./schema"
 
 export interface Settings extends Readonly<Record<string, unknown>> {
-  readonly baseURL?: string
   readonly headers?: Readonly<Record<string, string>>
   readonly body?: Readonly<Record<string, unknown>>
   readonly limits?: {
     readonly context: number
-    readonly input?: number
     readonly output: number
   }
 }

packages/ai/src/providers/openrouter.ts

@@ -4,72 +4,21 @@ import { Endpoint } from "../route/endpoint"
 import { Framing } from "../route/framing"
 import { Protocol } from "../route/protocol"
 import { AuthOptions, type ProviderAuthOption } from "../route/auth-options"
-import { ProviderID, type CacheHint, type ModelID, type ProviderOptions } from "../schema"
+import { ProviderID, type ModelID, type ProviderOptions } from "../schema"
 import type { ProviderPackage } from "../provider-package"
 import * as OpenAICompatibleProfiles from "./openai-compatible-profile"
 import * as OpenAIChat from "../protocols/openai-chat"
-import { newBreakpoints, ttlBucket } from "../protocols/utils/cache"
 import { isRecord } from "../protocols/shared"
 
 export const profile = OpenAICompatibleProfiles.profiles.openrouter
 export const id = ProviderID.make(profile.provider)
 const ADAPTER = "openrouter"
 
-type OpenRouterString<Known extends string> = Known | (string & {})
-
-export interface OpenRouterProviderRouting {
-  readonly [key: string]: unknown
-  readonly order?: ReadonlyArray<string>
-  readonly allow_fallbacks?: boolean
-  readonly require_parameters?: boolean
-  readonly data_collection?: OpenRouterString<"allow" | "deny">
-  readonly only?: ReadonlyArray<string>
-  readonly ignore?: ReadonlyArray<string>
-  readonly quantizations?: ReadonlyArray<string>
-  readonly sort?: OpenRouterString<"price" | "throughput" | "latency">
-  readonly max_price?: Readonly<{
-    prompt?: number | string
-    completion?: number | string
-    image?: number | string
-    audio?: number | string
-    request?: number | string
-  }>
-  readonly zdr?: boolean
-}
-
-export type OpenRouterPlugin =
-  | Readonly<{
-      id: "web"
-      max_results?: number
-      search_prompt?: string
-      engine?: OpenRouterString<"native" | "exa">
-    }>
-  | Readonly<{ id: "file-parser"; max_files?: number; pdf?: { engine?: string } }>
-  | Readonly<{ id: "moderation" }>
-  | Readonly<{ id: "response-healing" }>
-  | Readonly<{ id: "auto-router"; allowed_models?: ReadonlyArray<string> }>
-  | Readonly<{ id: string & {}; [key: string]: unknown }>
-
 export interface OpenRouterOptions {
   readonly [key: string]: unknown
-  readonly debug?: Readonly<{ echo_upstream_body?: boolean }>
-  readonly models?: ReadonlyArray<string>
-  readonly plugins?: ReadonlyArray<OpenRouterPlugin>
+  readonly usage?: boolean | Record<string, unknown>
+  readonly reasoning?: Record<string, unknown>
   readonly promptCacheKey?: string
-  readonly provider?: OpenRouterProviderRouting
-  readonly reasoning?: Readonly<{
-    enabled?: boolean
-    exclude?: boolean
-    effort?: OpenRouterString<"none" | "minimal" | "low" | "medium" | "high" | "xhigh" | "max">
-    max_tokens?: number
-  }>
-  readonly usage?: boolean | Readonly<{ include: boolean }>
-  readonly user?: string
-  readonly web_search_options?: Readonly<{
-    max_results?: number
-    search_prompt?: string
-    engine?: OpenRouterString<"native" | "exa">
-  }>
 }
 
 export type OpenRouterProviderOptionsInput = ProviderOptions & {
@@ -98,7 +47,7 @@ export const protocol = Protocol.make({
   body: {
     schema: OpenRouterBody,
     from: (request) =>
-      OpenAIChat.fromRequest(request, { cacheControl: cacheControl() }).pipe(
+      OpenAIChat.protocol.body.from(request).pipe(
         Effect.map((body) => {
           const sourceAssistants = request.messages.filter((message) => message.role === "assistant")
           let assistantIndex = 0
@@ -129,39 +78,16 @@ export const protocol = Protocol.make({
   stream: OpenAIChat.protocol.stream,
 })
 
-const cacheControl = () => {
-  const breakpoints = newBreakpoints(4)
-  return (cache: CacheHint | undefined) => {
-    if (cache === undefined || breakpoints.remaining === 0) return undefined
-    breakpoints.remaining -= 1
-    return {
-      type: "ephemeral" as const,
-      ...(ttlBucket(cache.ttlSeconds) === "1h" ? { ttl: "1h" } : {}),
-    }
-  }
-}
-
 const bodyOptions = (input: unknown) => {
   const openrouter = isRecord(input) ? input : {}
-  const { usage, models, provider, plugins, web_search_options, debug, user, reasoning, promptCacheKey, ...options } =
-    openrouter
   return {
-    ...options,
-    ...(usage === undefined || usage === true
+    ...(openrouter.usage === true
       ? { usage: { include: true } }
-      : usage === false
-        ? { usage: { include: false } }
-        : isRecord(usage)
-          ? { usage }
-          : {}),
-    ...(Array.isArray(models) ? { models } : {}),
-    ...(isRecord(provider) ? { provider } : {}),
-    ...(Array.isArray(plugins) ? { plugins } : {}),
-    ...(isRecord(web_search_options) ? { web_search_options } : {}),
-    ...(isRecord(debug) ? { debug } : {}),
-    ...(typeof user === "string" ? { user } : {}),
-    ...(isRecord(reasoning) ? { reasoning } : {}),
-    ...(typeof promptCacheKey === "string" ? { prompt_cache_key: promptCacheKey } : {}),
+      : isRecord(openrouter.usage)
+        ? { usage: openrouter.usage }
+        : {}),
+    ...(isRecord(openrouter.reasoning) ? { reasoning: openrouter.reasoning } : {}),
+    ...(typeof openrouter.promptCacheKey === "string" ? { prompt_cache_key: openrouter.promptCacheKey } : {}),
   }
 }
 

packages/ai/src/route/client.ts

@@ -5,7 +5,7 @@ import { Endpoint, type EndpointPatch } from "./endpoint"
 import { RequestExecutor } from "./executor"
 import { Framing } from "./framing"
 import { HttpTransport } from "./transport"
-import type { HttpRequestTransform, Transport, TransportRuntime } from "./transport"
+import type { Transport, TransportRuntime } from "./transport"
 import { WebSocketExecutor } from "./transport"
 import type { Protocol } from "./protocol"
 import { applyCachePolicy } from "../cache-policy"
@@ -46,11 +46,7 @@ export interface Route<Body, Prepared = unknown> {
   readonly body: RouteBody<Body>
   readonly with: (patch: RoutePatch<Body, Prepared>) => Route<Body, Prepared>
   readonly model: <Options extends ProviderOptions = ProviderOptions>(input: RouteMappedModelInput) => Model<Options>
-  readonly prepareTransport: (
-    body: Body,
-    request: LLMRequest,
-    options?: StreamOptions,
-  ) => Effect.Effect<Prepared, LLMError>
+  readonly prepareTransport: (body: Body, request: LLMRequest) => Effect.Effect<Prepared, LLMError>
   readonly streamPrepared: (
     prepared: Prepared,
     request: LLMRequest,
@@ -149,16 +145,12 @@ export interface Interface {
   readonly generate: GenerateMethod
 }
 
-export interface StreamOptions {
-  readonly transform?: HttpRequestTransform
-}
-
 export interface StreamMethod {
-  (request: LLMRequest, options?: StreamOptions): Stream.Stream<LLMEvent, LLMError>
+  (request: LLMRequest): Stream.Stream<LLMEvent, LLMError>
 }
 
 export interface GenerateMethod {
-  (request: LLMRequest, options?: StreamOptions): Effect.Effect<LLMResponse, LLMError>
+  (request: LLMRequest): Effect.Effect<LLMResponse, LLMError>
 }
 
 export class Service extends Context.Service<Service, Interface>()("@opencode/LLMClient") {}
@@ -294,7 +286,7 @@ function makeFromTransport<Body, Prepared, Frame, Event, State>(
       },
       model: <Options extends ProviderOptions = ProviderOptions>(input: RouteMappedModelInput) =>
         makeRouteModel<Options>(route, input),
-      prepareTransport: (body, request, options) =>
+      prepareTransport: (body, request) =>
         routeInput.transport.prepare({
           body,
           request,
@@ -302,7 +294,6 @@ function makeFromTransport<Body, Prepared, Frame, Event, State>(
           auth: routeInput.auth ?? Auth.none,
           encodeBody,
           headers: routeInput.headers,
-          transform: options?.transform,
         }),
       streamPrepared: (prepared: Prepared, request: LLMRequest, runtime: TransportRuntime) => {
         const route = `${request.model.provider}/${request.model.route.id}`
@@ -368,14 +359,14 @@ export function make<Body, Prepared, Frame, Event, State>(
   })
 }
 
-const compile = Effect.fn("LLM.compile")(function* (request: LLMRequest, options?: StreamOptions) {
+const compile = Effect.fn("LLM.compile")(function* (request: LLMRequest) {
   const resolved = applyCachePolicy(resolveRequestOptions(request))
   const route = resolved.model.route
 
   const body = yield* route.body
     .from(resolved)
     .pipe(Effect.flatMap(ProviderShared.validateWith(Schema.decodeUnknownEffect(route.body.schema))))
-  const prepared = yield* route.prepareTransport(body, resolved, options)
+  const prepared = yield* route.prepareTransport(body, resolved)
 
   return {
     request: resolved,
@@ -398,17 +389,17 @@ export const compileRequest = Effect.fn("LLM.compileRequest")(function* (request
   }
 })
 
-const streamRequestWith = (runtime: TransportRuntime) => (request: LLMRequest, options?: StreamOptions) =>
+const streamRequestWith = (runtime: TransportRuntime) => (request: LLMRequest) =>
   Stream.unwrap(
     Effect.gen(function* () {
-      const compiled = yield* compile(request, options)
+      const compiled = yield* compile(request)
       return compiled.route.streamPrepared(compiled.prepared, compiled.request, runtime)
     }),
   )
 
 const generateWith = (stream: Interface["stream"]) =>
-  Effect.fn("LLM.generate")(function* (request: LLMRequest, options?: StreamOptions) {
-    const state = yield* stream(request, options).pipe(Stream.runFold(LLMResponse.empty, LLMResponse.reduce))
+  Effect.fn("LLM.generate")(function* (request: LLMRequest) {
+    const state = yield* stream(request).pipe(Stream.runFold(LLMResponse.empty, LLMResponse.reduce))
     const response = LLMResponse.complete(state)
     if (response) return response
     return yield* ProviderShared.eventError(
@@ -417,24 +408,24 @@ const generateWith = (stream: Interface["stream"]) =>
     )
   })
 
-export function stream(request: LLMRequest, options?: StreamOptions): Stream.Stream<LLMEvent, LLMError> {
+export function stream(request: LLMRequest): Stream.Stream<LLMEvent, LLMError> {
   return Stream.unwrap(
     Effect.gen(function* () {
-      return (yield* Service).stream(request, options)
+      return (yield* Service).stream(request)
     }),
   ) as Stream.Stream<LLMEvent, LLMError>
 }
 
-export function generate(request: LLMRequest, options?: StreamOptions): Effect.Effect<LLMResponse, LLMError> {
+export function generate(request: LLMRequest): Effect.Effect<LLMResponse, LLMError> {
   return Effect.gen(function* () {
-    return yield* (yield* Service).generate(request, options)
+    return yield* (yield* Service).generate(request)
   }) as Effect.Effect<LLMResponse, LLMError>
 }
 
-export const streamRequest = (request: LLMRequest, options?: StreamOptions) =>
+export const streamRequest = (request: LLMRequest) =>
   Stream.unwrap(
     Effect.gen(function* () {
-      return (yield* Service).stream(request, options)
+      return (yield* Service).stream(request)
     }),
   )
 

packages/ai/src/route/index.ts

@@ -8,7 +8,6 @@ export type {
   AnyRoute,
   Interface as LLMClientShape,
   Service as LLMClientService,
-  StreamOptions,
 } from "./client"
 export * from "./executor"
 export { Auth } from "./auth"
@@ -23,4 +22,4 @@ export type { ApiKeyMode, AuthOverride, ProviderAuthOption } from "./auth-option
 export type { Definition as EndpointFn, EndpointInput } from "./endpoint"
 export type { Definition as FramingDef } from "./framing"
 export type { Protocol as ProtocolDef } from "./protocol"
-export type { HttpRequest, HttpRequestTransform, Transport as TransportDef, TransportRuntime } from "./transport"
+export type { Transport as TransportDef, TransportRuntime } from "./transport"

packages/ai/src/route/transport/http.ts

@@ -28,9 +28,57 @@ const applyQuery = (url: string, query: Record<string, string> | undefined) => {
   return next.toString()
 }
 
+const PROTOCOL_BODY_OVERLAY_DENYLIST = new Set([
+  "anthropic_version",
+  "content",
+  "contents",
+  "frequencyPenalty",
+  "frequency_penalty",
+  "generationConfig",
+  "inferenceConfig",
+  "input",
+  "maxTokens",
+  "max_tokens",
+  "messages",
+  "model",
+  "presencePenalty",
+  "presence_penalty",
+  "responseFormat",
+  "response_format",
+  "seed",
+  "stop",
+  "stopSequences",
+  "stop_sequences",
+  "stream",
+  "streamOptions",
+  "stream_options",
+  "system",
+  "systemInstruction",
+  "system_instruction",
+  "temperature",
+  "thinking",
+  "toolChoice",
+  "toolConfig",
+  "tool_choice",
+  "tool_config",
+  "tools",
+  "topK",
+  "topP",
+  "top_k",
+  "top_p",
+])
+
+const forbiddenBodyOverlayKeys = (body: Record<string, unknown>) =>
+  Object.keys(body).filter((key) => PROTOCOL_BODY_OVERLAY_DENYLIST.has(key))
+
 const bodyWithOverlay = <Body>(body: Body, request: LLMRequest, encodeBody: (body: Body) => string) =>
   Effect.gen(function* () {
     if (request.http?.body === undefined) return { jsonBody: body, bodyText: encodeBody(body) }
+    const forbiddenKeys = forbiddenBodyOverlayKeys(request.http.body)
+    if (forbiddenKeys.length > 0)
+      return yield* ProviderShared.invalidRequest(
+        `http.body cannot overlay protocol-owned field(s): ${forbiddenKeys.join(", ")}`,
+      )
     if (ProviderShared.isRecord(body)) {
       const overlaid = mergeJsonRecords(body, request.http.body) ?? {}
       return { jsonBody: overlaid, bodyText: ProviderShared.encodeJson(overlaid) }
@@ -72,19 +120,14 @@ export const httpJson = <Body, Frame>(input: HttpJsonInput<Body, Frame>): HttpJs
   id: "http-json",
   with: (patch) => httpJson({ ...input, ...patch }),
   prepare: (prepareInput) =>
-    Effect.gen(function* () {
-      const parts = yield* jsonRequestParts({ ...prepareInput })
-      const request = { url: parts.url, method: "POST", headers: { ...parts.headers }, body: parts.bodyText }
-      yield* (prepareInput.transform?.(request) ?? Effect.void)
-      return {
-        request: ProviderShared.jsonPost({
-          url: request.url,
-          body: request.body ?? "",
-          headers: Headers.fromInput(request.headers),
-        }),
+    jsonRequestParts({
+      ...prepareInput,
+    }).pipe(
+      Effect.map((parts) => ({
+        request: ProviderShared.jsonPost({ url: parts.url, body: parts.bodyText, headers: parts.headers }),
         framing: input.framing,
-      }
-    }),
+      })),
+    ),
   frames: (prepared, request, runtime) =>
     Stream.unwrap(
       runtime.http

packages/ai/src/route/transport/index.ts

@@ -10,15 +10,6 @@ export interface TransportRuntime {
   readonly webSocket?: WebSocketExecutorInterface
 }
 
-export interface HttpRequest {
-  url: string
-  readonly method: string
-  headers: Record<string, string>
-  body: string | undefined
-}
-
-export type HttpRequestTransform = (request: HttpRequest) => Effect.Effect<void>
-
 export interface Transport<Body, Prepared, Frame> {
   readonly id: string
   readonly prepare: (input: TransportPrepareInput<Body>) => Effect.Effect<Prepared, LLMError>
@@ -36,7 +27,6 @@ export interface TransportPrepareInput<Body> {
   readonly auth: Auth.Definition
   readonly encodeBody: (body: Body) => string
   readonly headers?: (input: { readonly request: LLMRequest }) => Record<string, string>
-  readonly transform?: HttpRequestTransform
 }
 
 export * as HttpTransport from "./http"

packages/ai/src/schema/messages.ts

@@ -124,7 +124,6 @@ export const ToolCallPart = Object.assign(
     name: Schema.String,
     input: Schema.Unknown,
     providerExecuted: Schema.optional(Schema.Boolean),
-    cache: Schema.optional(CacheHint),
     metadata: Schema.optional(Schema.Record(Schema.String, Schema.Unknown)),
     providerMetadata: Schema.optional(ProviderMetadata),
   }).annotate({ identifier: "LLM.Content.ToolCall" }),
@@ -169,7 +168,6 @@ export const ReasoningPart = Schema.Struct({
   type: Schema.Literal("reasoning"),
   text: Schema.String,
   encrypted: Schema.optional(Schema.String),
-  cache: Schema.optional(CacheHint),
   metadata: Schema.optional(Schema.Record(Schema.String, Schema.Unknown)),
   providerMetadata: Schema.optional(ProviderMetadata),
 }).annotate({ identifier: "LLM.Content.Reasoning" })

packages/ai/src/schema/options.ts

@@ -123,7 +123,6 @@ export const mergeGenerationOptions = (...items: ReadonlyArray<GenerationOptions
 
 export class ModelLimits extends Schema.Class<ModelLimits>("LLM.ModelLimits")({
   context: Schema.optional(Schema.Number),
-  input: Schema.optional(Schema.Number),
   output: Schema.optional(Schema.Number),
 }) {}
 
@@ -167,13 +166,9 @@ export namespace ModelDefaults {
 export const ModelToolSchemaCompatibility = Schema.Literals(["gemini", "moonshot"])
 export type ModelToolSchemaCompatibility = Schema.Schema.Type<typeof ModelToolSchemaCompatibility>
 
-export const ModelMaxTokensFieldCompatibility = Schema.Literals(["max_completion_tokens", "max_tokens"])
-export type ModelMaxTokensFieldCompatibility = Schema.Schema.Type<typeof ModelMaxTokensFieldCompatibility>
-
 export class ModelCompatibility extends Schema.Class<ModelCompatibility>("LLM.ModelCompatibility")({
   toolSchema: Schema.optional(ModelToolSchemaCompatibility),
   reasoningField: Schema.optional(Schema.String),
-  maxTokensField: Schema.optional(ModelMaxTokensFieldCompatibility),
 }) {}
 
 export namespace ModelCompatibility {

packages/ai/test/compile.test.ts

@@ -137,61 +137,24 @@ describe("request option precedence", () => {
     ),
   )
 
-  it.effect("transforms the final HTTP request after serialization and authentication", () =>
-    LLMClient.generate(
-      LLM.request({
-        model: OpenAIChat.route
-          .with({ endpoint: { baseURL: "https://api.openai.test/v1/" }, auth: Auth.bearer("fresh-key") })
-          .model({ id: "gpt-4o-mini" }),
-        prompt: "Say hello.",
-      }),
-      {
-        transform: (request) =>
-          Effect.sync(() => {
-            expect(request.headers.authorization).toBe("Bearer fresh-key")
-            request.url = "https://proxy.test/v1/chat/completions"
-            request.headers["x-plugin"] = "transformed"
-            request.body = JSON.stringify({ transformed: true })
-          }),
-      },
-    ).pipe(
-      Effect.provide(
-        dynamicResponse((input) =>
-          Effect.gen(function* () {
-            const web = yield* HttpClientRequest.toWeb(input.request).pipe(Effect.orDie)
-            expect(web.url).toBe("https://proxy.test/v1/chat/completions")
-            expect(web.headers.get("x-plugin")).toBe("transformed")
-            expect(decodeJson(input.text)).toEqual({ transformed: true })
-            return input.respond(sseEvents(deltaChunk({}, "stop")), {
-              headers: { "content-type": "text/event-stream" },
-            })
-          }),
-        ),
-      ),
-    ),
-  )
+  it.effect("rejects raw body overlays for protocol-owned roots", () =>
+    Effect.gen(function* () {
+      const model = OpenAIChat.route
+        .with({ endpoint: { baseURL: "https://api.openai.test/v1/" }, auth: Auth.bearer("test") })
+        .model({ id: "gpt-4o-mini" })
+      const error = yield* compileRequest(
+        LLM.request({
+          model,
+          prompt: "Say hello.",
+          http: { body: { model: "gpt-5", messages: [], tools: [] } },
+        }),
+      ).pipe(Effect.flip)
 
-  it.effect("applies raw body overlays after protocol lowering", () =>
-    LLMClient.generate(
-      LLM.request({
-        model: OpenAIChat.route
-          .with({ endpoint: { baseURL: "https://api.openai.test/v1/" }, auth: Auth.bearer("test") })
-          .model({ id: "gpt-4o-mini" }),
-        prompt: "Say hello.",
-        http: { body: { model: "gpt-5", messages: [], tools: [] } },
-      }),
-    ).pipe(
-      Effect.provide(
-        dynamicResponse((input) =>
-          Effect.gen(function* () {
-            expect(decodeJson(input.text)).toMatchObject({ model: "gpt-5", messages: [], tools: [] })
-            return input.respond(sseEvents(deltaChunk({}, "stop")), {
-              headers: { "content-type": "text/event-stream" },
-            })
-          }),
-        ),
-      ),
-    ),
+      expect(error.reason).toMatchObject({
+        _tag: "InvalidRequest",
+        message: "http.body cannot overlay protocol-owned field(s): model, messages, tools",
+      })
+    }),
   )
 
   it.effect("uses model output limits after route limits and before call maxTokens", () =>

packages/ai/test/provider-options/google.types.ts

@@ -9,39 +9,9 @@ LLM.request({
   providerOptions: { gemini: { thinkingConfig: { thinkingBudget: 1024 } } },
 })
 
-LLM.request({
-  model,
-  prompt: "Hello",
-  providerOptions: {
-    gemini: {
-      // @ts-expect-error Gemini safety settings require a threshold for every category.
-      safetySettings: [{ category: "HARM_CATEGORY_HATE_SPEECH" }],
-    },
-  },
-})
-
-LLM.request({
-  model,
-  prompt: "Hello",
-  providerOptions: {
-    gemini: {
-      cachedContent: "cachedContents/example",
-      safetySettings: [{ category: "HARM_CATEGORY_HATE_SPEECH", threshold: "BLOCK_ONLY_HIGH" }],
-      serviceTier: "future-tier",
-      thinkingConfig: { thinkingLevel: "high", includeThoughts: true },
-    },
-  },
-})
-
 LLM.request({
   model,
   prompt: "Hello",
   // @ts-expect-error Gemini thinking budgets must be numeric.
   providerOptions: { gemini: { thinkingConfig: { thinkingBudget: "large" } } },
 })
-
-LLM.request({
-  model,
-  prompt: "Hello",
-  providerOptions: { gemini: { thinkingConfig: { thinkingLevel: "maximum" } } },
-})

packages/ai/test/provider-options/openrouter.types.ts

@@ -5,28 +5,6 @@ const model = OpenRouter.provider.model("anthropic/claude-sonnet-4.5")
 
 LLM.request({ model, prompt: "Hello", providerOptions: { openrouter: { usage: true } } })
 
-LLM.request({
-  model,
-  prompt: "Hello",
-  providerOptions: {
-    openrouter: {
-      models: ["google/gemini-3.1-pro"],
-      provider: {
-        order: ["anthropic"],
-        require_parameters: true,
-        data_collection: "future-policy",
-        sort: "future-sort",
-        max_price: { prompt: "0.50" },
-      },
-      reasoning: { effort: "future-effort", exclude: false },
-      plugins: [{ id: "future-plugin", enabled: true }],
-      web_search_options: { engine: "future-engine" },
-      debug: { echo_upstream_body: true },
-      user: "user_123",
-    },
-  },
-})
-
 LLM.request({
   model,
   prompt: "Hello",

packages/ai/test/provider/gemini.test.ts

@@ -41,14 +41,7 @@ describe("Gemini route", () => {
     Effect.gen(function* () {
       const prepared = yield* compileRequest(
         LLMRequest.update(request, {
-          providerOptions: {
-            gemini: {
-              cachedContent: "cachedContents/example",
-              safetySettings: [{ category: "HARM_CATEGORY_HATE_SPEECH", threshold: "BLOCK_ONLY_HIGH" }],
-              serviceTier: "priority",
-              thinkingConfig: { thinkingBudget: 0, includeThoughts: false, thinkingLevel: "high" },
-            },
-          },
+          providerOptions: { gemini: { thinkingConfig: { thinkingBudget: 0, includeThoughts: false } } },
         }),
       )
       const filtered = yield* compileRequest(
@@ -56,33 +49,12 @@ describe("Gemini route", () => {
           providerOptions: { gemini: { thinkingConfig: { thinkingBudget: "invalid", includeThoughts: false } } },
         }),
       )
-      const defaulted = yield* compileRequest(
-        LLMRequest.update(request, {
-          providerOptions: { gemini: { thinkingConfig: { thinkingLevel: "high" } } },
-        }),
-      )
-      const emptySafetySettings = yield* compileRequest(
-        LLMRequest.update(request, {
-          providerOptions: { gemini: { safetySettings: [] } },
-        }),
-      )
 
       expect(prepared.body.generationConfig?.thinkingConfig).toEqual({
         thinkingBudget: 0,
         includeThoughts: false,
-        thinkingLevel: "high",
       })
-      expect(prepared.body.cachedContent).toBe("cachedContents/example")
-      expect(prepared.body.safetySettings).toEqual([
-        { category: "HARM_CATEGORY_HATE_SPEECH", threshold: "BLOCK_ONLY_HIGH" },
-      ])
-      expect(prepared.body.serviceTier).toBe("priority")
       expect(filtered.body.generationConfig?.thinkingConfig).toEqual({ includeThoughts: false })
-      expect(defaulted.body.generationConfig?.thinkingConfig).toEqual({
-        includeThoughts: true,
-        thinkingLevel: "high",
-      })
-      expect(emptySafetySettings.body.safetySettings).toEqual([])
     }),
   )
 

packages/ai/test/provider/google-vertex.test.ts

@@ -181,6 +181,23 @@ describe("Google Vertex providers", () => {
     }),
   )
 
+  it.effect("protects the Vertex Messages API version from body overlays", () =>
+    Effect.gen(function* () {
+      const error = yield* compileRequest(
+        LLM.request({
+          model: GoogleVertexMessages.configure({
+            accessToken: "vertex-token",
+            http: { body: { anthropic_version: "wrong" } },
+            project: "vertex-project",
+          }).model("claude-sonnet-4-6"),
+          prompt: "Say hello.",
+        }),
+      ).pipe(Effect.flip)
+
+      expect(error.message).toContain("http.body cannot overlay protocol-owned field(s): anthropic_version")
+    }),
+  )
+
   it.effect("routes tuned Gemini models through their deployed endpoint", () =>
     Effect.gen(function* () {
       const response = yield* LLMClient.generate(

packages/ai/test/provider/openai-compatible-chat.test.ts

@@ -144,20 +144,6 @@ describe("OpenAI-compatible Chat route", () => {
     }),
   )
 
-  it.effect("configures the max tokens request field", () =>
-    Effect.gen(function* () {
-      const compatible = OpenAICompatibleChat.route
-        .with({ provider: "custom", endpoint: { baseURL: "https://api.custom.test/v1" } })
-        .model({ id: "custom-model", compatibility: { maxTokensField: "max_completion_tokens" } })
-      const prepared = yield* compileRequest(
-        LLM.request({ model: compatible, prompt: "Say hello.", generation: { maxTokens: 20 } }),
-      )
-
-      expect(prepared.body).toMatchObject({ max_completion_tokens: 20 })
-      expect(prepared.body).not.toHaveProperty("max_tokens")
-    }),
-  )
-
   it.effect("matches AI SDK compatible tool request body fixture", () =>
     Effect.gen(function* () {
       const prepared = yield* compileRequest(

packages/ai/test/provider/openrouter.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect } from "bun:test"
 import { Effect } from "effect"
-import { CacheHint, LLM, Message } from "../../src"
+import { LLM, Message } from "../../src"
 import { LLMClient } from "../../src/route"
 import { compileRequest } from "../../src/route/client"
 import * as OpenRouter from "../../src/providers/openrouter"
@@ -27,131 +27,10 @@ describe("OpenRouter", () => {
         model: "openai/gpt-4o-mini",
         messages: [{ role: "user", content: "Say hello." }],
         stream: true,
-        usage: { include: true },
       })
     }),
   )
 
-  it.effect("lowers the native cache policy to OpenRouter cache controls", () =>
-    Effect.gen(function* () {
-      const prepared = yield* compileRequest(
-        LLM.request({
-          model: OpenRouter.configure({ apiKey: "test-key" }).model("anthropic/claude-sonnet-4.6"),
-          system: [
-            { type: "text", text: "Base agent", cache: new CacheHint({ type: "ephemeral", ttlSeconds: 3_600 }) },
-            { type: "text", text: "Project instructions" },
-          ],
-          tools: [{ name: "lookup", description: "Lookup", inputSchema: { type: "object", properties: {} } }],
-          prompt: "Hello",
-          cache: { tools: true, system: true, messages: { tail: 1 } },
-        }),
-      )
-
-      expect(prepared.body).toMatchObject({
-        tools: [{ cache_control: { type: "ephemeral" } }],
-        messages: [
-          {
-            role: "system",
-            content: [
-              { text: "Base agent", cache_control: { type: "ephemeral", ttl: "1h" } },
-              { text: "Project instructions", cache_control: { type: "ephemeral" } },
-            ],
-          },
-          {
-            role: "user",
-            content: [{ text: "Hello", cache_control: { type: "ephemeral" } }],
-          },
-        ],
-      })
-    }),
-  )
-
-  it.effect("lowers manual assistant and tool-result cache hints", () =>
-    Effect.gen(function* () {
-      const prepared = yield* compileRequest(
-        LLM.request({
-          model: OpenRouter.configure({ apiKey: "test-key" }).model("anthropic/claude-sonnet-4.6"),
-          cache: "none",
-          messages: [
-            Message.user("Call the tool"),
-            Message.assistant([
-              { type: "text", text: "Calling", cache: new CacheHint({ type: "ephemeral" }) },
-              { type: "tool-call", id: "call_1", name: "lookup", input: {} },
-            ]),
-            Message.tool({
-              id: "call_1",
-              name: "lookup",
-              result: "Done",
-              cache: new CacheHint({ type: "ephemeral", ttlSeconds: 3_600 }),
-            }),
-          ],
-        }),
-      )
-
-      expect(prepared.body.messages).toMatchObject([
-        { role: "user", content: "Call the tool" },
-        { role: "assistant", content: "Calling", cache_control: { type: "ephemeral" } },
-        { role: "tool", content: '"Done"', cache_control: { type: "ephemeral", ttl: "1h" } },
-      ])
-    }),
-  )
-
-  it.effect("caps manual cache controls at four breakpoints", () =>
-    Effect.gen(function* () {
-      const cache = new CacheHint({ type: "ephemeral" })
-      const prepared = yield* compileRequest(
-        LLM.request({
-          model: OpenRouter.configure({ apiKey: "test-key" }).model("anthropic/claude-sonnet-4.6"),
-          cache: "none",
-          system: [1, 2, 3, 4, 5].map((index) => ({ type: "text" as const, text: `System ${index}`, cache })),
-          prompt: "Hello",
-        }),
-      )
-
-      const system = prepared.body.messages[0]
-      expect(system?.role).toBe("system")
-      expect(
-        system && Array.isArray(system.content)
-          ? system.content.filter((part) => "cache_control" in part && part.cache_control !== undefined)
-          : [],
-      ).toHaveLength(4)
-    }),
-  )
-
-  it.effect("preserves cache policy hints on reasoning-only assistant messages", () =>
-    Effect.gen(function* () {
-      const prepared = yield* compileRequest(
-        LLM.request({
-          model: OpenRouter.configure({ apiKey: "test-key" }).model("anthropic/claude-sonnet-4.6"),
-          cache: { messages: "latest-assistant" },
-          messages: [Message.user("Think"), Message.assistant([{ type: "reasoning", text: "Reasoning" }])],
-        }),
-      )
-
-      expect(prepared.body.messages).toMatchObject([
-        { role: "user", content: "Think" },
-        { role: "assistant", cache_control: { type: "ephemeral" } },
-      ])
-    }),
-  )
-
-  it.effect("allows usage accounting to be disabled explicitly", () =>
-    Effect.gen(function* () {
-      const prepared = yield* compileRequest(
-        LLM.request({
-          model: OpenRouter.configure({
-            apiKey: "test-key",
-            providerOptions: { openrouter: { usage: false } },
-          }).model("openai/gpt-4o-mini"),
-          cache: "none",
-          prompt: "Hello",
-        }),
-      )
-
-      expect(prepared.body.usage).toEqual({ include: false })
-    }),
-  )
-
   it.effect("applies OpenRouter payload options from the model helper", () =>
     Effect.gen(function* () {
       const prepared = yield* compileRequest(
@@ -163,13 +42,6 @@ describe("OpenRouter", () => {
                 usage: true,
                 reasoning: { effort: "high" },
                 promptCacheKey: "session_123",
-                models: ["anthropic/claude-sonnet-4.6", "google/gemini-3.1-pro"],
-                provider: { order: ["anthropic", "google"], require_parameters: true },
-                plugins: [{ id: "response-healing" }],
-                web_search_options: { engine: "native", max_results: 3 },
-                debug: { echo_upstream_body: true },
-                user: "user_123",
-                future_option: { enabled: true },
               },
             },
           }).model("anthropic/claude-3.7-sonnet:thinking"),
@@ -181,54 +53,10 @@ describe("OpenRouter", () => {
         usage: { include: true },
         reasoning: { effort: "high" },
         prompt_cache_key: "session_123",
-        models: ["anthropic/claude-sonnet-4.6", "google/gemini-3.1-pro"],
-        provider: { order: ["anthropic", "google"], require_parameters: true },
-        plugins: [{ id: "response-healing" }],
-        web_search_options: { engine: "native", max_results: 3 },
-        debug: { echo_upstream_body: true },
-        user: "user_123",
-        future_option: { enabled: true },
       })
     }),
   )
 
-  it.effect("filters invalid known OpenRouter options while preserving extensions", () =>
-    Effect.gen(function* () {
-      const invalid: Record<string, unknown> = {
-        usage: "yes",
-        models: "anthropic/claude-sonnet-4.6",
-        provider: [],
-        plugins: {},
-        web_search_options: [],
-        debug: [],
-        user: 123,
-        reasoning: [],
-        promptCacheKey: 123,
-        future_option: { enabled: true },
-      }
-      const prepared = yield* compileRequest(
-        LLM.request({
-          model: OpenRouter.configure({
-            apiKey: "test-key",
-            providerOptions: { openrouter: invalid },
-          }).model("openai/gpt-4o-mini"),
-          prompt: "Hello",
-        }),
-      )
-
-      expect(prepared.body).toMatchObject({ future_option: { enabled: true } })
-      expect(prepared.body).not.toHaveProperty("usage")
-      expect(prepared.body).not.toHaveProperty("models")
-      expect(prepared.body).not.toHaveProperty("provider")
-      expect(prepared.body).not.toHaveProperty("plugins")
-      expect(prepared.body).not.toHaveProperty("web_search_options")
-      expect(prepared.body).not.toHaveProperty("debug")
-      expect(prepared.body).not.toHaveProperty("user")
-      expect(prepared.body).not.toHaveProperty("reasoning")
-      expect(prepared.body).not.toHaveProperty("prompt_cache_key")
-    }),
-  )
-
   it.effect("preserves the upstream provider finish reason", () =>
     Effect.gen(function* () {
       const model = OpenRouter.configure({ apiKey: "test-key" }).model("anthropic/claude-sonnet-4.6")
@@ -276,7 +104,6 @@ describe("OpenRouter", () => {
       const prepared = yield* compileRequest(
         LLM.request({
           model: OpenRouter.configure({ apiKey: "test-key" }).model("anthropic/claude-sonnet-4.6"),
-          cache: "none",
           messages: [
             Message.assistant([
               {
@@ -310,7 +137,6 @@ describe("OpenRouter", () => {
       const prepared = yield* compileRequest(
         LLM.request({
           model: OpenRouter.configure({ apiKey: "test-key" }).model("anthropic/claude-sonnet-4.6"),
-          cache: "none",
           messages: [
             Message.assistant({
               type: "reasoning",
@@ -336,7 +162,6 @@ describe("OpenRouter", () => {
       const prepared = yield* compileRequest(
         LLM.request({
           model: OpenRouter.configure({ apiKey: "test-key" }).model("anthropic/claude-sonnet-4.6"),
-          cache: "none",
           messages: [
             Message.assistant({
               type: "reasoning",
@@ -358,7 +183,6 @@ describe("OpenRouter", () => {
       const prepared = yield* compileRequest(
         LLM.request({
           model: OpenRouter.configure({ apiKey: "test-key" }).model("anthropic/claude-sonnet-4.6"),
-          cache: "none",
           messages: [Message.assistant({ type: "reasoning", text: "Thinking" })],
         }),
       )

packages/app/package.json

@@ -59,7 +59,6 @@
     "@opencode-ai/sdk": "file:vendor/opencode-ai-sdk-1.18.8-dev.tgz",
     "@opencode-ai/session-ui": "workspace:*",
     "@opencode-ai/ui": "workspace:*",
-    "@opencode-ai/util": "workspace:*",
     "@pierre/trees": "1.0.0-beta.4",
     "@sentry/solid": "catalog:",
     "@shikijs/transformers": "3.9.2",

packages/app/src/components/titlebar-tab-nav.tsx

@@ -4,7 +4,6 @@ import { createResizeObserver } from "@solid-primitives/resize-observer"
 import { createMutation } from "@tanstack/solid-query"
 import { IconButtonV2 } from "@opencode-ai/ui/v2/icon-button-v2"
 import { Icon as IconV2 } from "@opencode-ai/ui/v2/icon"
-import { displayLabel } from "@opencode-ai/util/session-title-fallback"
 import { useGlobal } from "@/context/global"
 import { ServerConnection, serverName } from "@/context/server"
 import { displayName, projectForSession } from "@/pages/layout/helpers"
@@ -55,10 +54,7 @@ export function TabNavItem(props: {
     if (!session) return
     return projectForSession(session, serverCtx()?.projects.list() ?? [])
   })
-  const title = createMemo(() => {
-    const session = props.session()
-    return session ? displayLabel(session) : props.fallbackTitle
-  })
+  const title = createMemo(() => props.session()?.title ?? props.fallbackTitle)
 
   const projectName = createMemo(() => {
     const session = props.session()
@@ -147,7 +143,7 @@ export function TabNavItem(props: {
     if (!canOpenTabRename(props.dragging, editing(), rename.isPending)) return
     const session = props.session()
     if (!session) return
-    titleEl.textContent = session.title ?? ""
+    titleEl.textContent = session.title
     setEditing(true)
 
     requestAnimationFrame(() => {
@@ -306,7 +302,7 @@ export function TabNavItem(props: {
       }}
       data={{
         projectName: projectName(),
-        title: title(),
+        title: props.session()?.title,
         path: previewPath(),
         serverName: serverLabel(),
       }}

packages/app/src/context/server-session-v2-reducer.test.ts

@@ -153,4 +153,42 @@ describe("v2 session reducer", () => {
 
     expect(result).toMatchObject({ sessionID: "ses_1", missing: "msg_user", touched: [] })
   })
+
+  test("forgets withdrawn input before a later promotion", () => {
+    const reducer = createV2SessionReducer()
+    reducer.reduce(
+      [],
+      event({
+        ...base,
+        id: "evt_admitted",
+        type: "session.input.admitted",
+        data: {
+          sessionID: "ses_1",
+          inputID: "msg_user",
+          input: { type: "user", delivery: "steer", data: { text: "hello" } },
+        },
+      }),
+    )
+    reducer.reduce(
+      [],
+      event({
+        ...base,
+        id: "evt_withdrawn",
+        type: "session.input.withdrawn",
+        data: { sessionID: "ses_1", inputID: "msg_user" },
+      }),
+    )
+
+    const result = reducer.reduce(
+      [],
+      event({
+        ...base,
+        id: "evt_promoted",
+        type: "session.input.promoted",
+        data: { sessionID: "ses_1", inputID: "msg_user" },
+      }),
+    )
+
+    expect(result).toMatchObject({ sessionID: "ses_1", missing: "msg_user", touched: [] })
+  })
 })

packages/app/src/context/server-session-v2-reducer.ts

@@ -29,6 +29,9 @@ export function createV2SessionReducer() {
       case "session.input.admitted":
         pending.set(key(sessionID, event.data.inputID), event.data.input)
         return result([...source])
+      case "session.input.withdrawn":
+        pending.delete(key(sessionID, event.data.inputID))
+        return
       case "session.input.promoted": {
         const input = pending.get(key(sessionID, event.data.inputID))
         pending.delete(key(sessionID, event.data.inputID))

packages/app/src/pages/home/home-session-search-controller.ts

@@ -3,7 +3,6 @@ import { useLanguage } from "@/context/language"
 import { serverName } from "@/context/server"
 import { displayName } from "@/pages/layout/helpers"
 import { makeEventListener } from "@solid-primitives/event-listener"
-import { displayLabel } from "@opencode-ai/util/session-title-fallback"
 import { createMemo, onCleanup } from "solid-js"
 import { createStore } from "solid-js/store"
 import type { HomeController } from "./home-controller"
@@ -24,7 +23,7 @@ export function createHomeSessionSearchController(home: HomeController, sessions
     if (!value) return []
     return sessions.data
       .searchRecords()
-      .filter((record) => `${displayLabel(record.session)} ${record.projectName}`.toLowerCase().includes(value))
+      .filter((record) => `${record.session.title} ${record.projectName}`.toLowerCase().includes(value))
   })
   const active = createMemo(() => {
     const records = results()

packages/app/src/pages/home/home-sessions-view.tsx

@@ -6,10 +6,10 @@ import { ButtonV2 } from "@opencode-ai/ui/v2/button-v2"
 import { Icon as IconV2 } from "@opencode-ai/ui/v2/icon"
 import { IconButtonV2 } from "@opencode-ai/ui/v2/icon-button-v2"
 import { TooltipV2 } from "@opencode-ai/ui/v2/tooltip-v2"
-import { displayLabel } from "@opencode-ai/util/session-title-fallback"
 import { useLanguage } from "@/context/language"
 import { ServerConnection } from "@/context/server"
 import { SessionTabAvatarView } from "@/pages/layout/session-tab-avatar"
+import { sessionTitle } from "@/utils/session-title"
 import { shouldOpenSessionInBackground } from "../home-session-open"
 import {
   HomeSessionStatusController,
@@ -344,7 +344,7 @@ function HomeSessionSearchResultRow(
     selected: boolean
   },
 ) {
-  const title = createMemo(() => displayLabel(props.record.session))
+  const title = createMemo(() => sessionTitle(props.record.session.title) || props.record.session.id)
   const showProjectName = () => props.showProjectName() && props.record.projectName
   const key = () => homeSessionSearchKey(props.record)
 
@@ -415,7 +415,7 @@ function HomeSessionGroupHeader(props: {
 }
 
 function HomeSessionRow(props: HomeSessionsViewProps & { record: HomeSessionRecord }) {
-  const title = createMemo(() => displayLabel(props.record.session))
+  const title = createMemo(() => sessionTitle(props.record.session.title) || props.record.session.id)
   const showProjectName = () => props.showProjectName() && props.record.projectName
 
   return (

packages/app/src/pages/layout/sidebar-items.tsx

@@ -5,7 +5,6 @@ import { Icon as IconV2 } from "@opencode-ai/ui/v2/icon"
 import { IconButton } from "@opencode-ai/ui/icon-button"
 import { Spinner } from "@opencode-ai/ui/spinner"
 import { Tooltip } from "@opencode-ai/ui/tooltip"
-import { displayLabel } from "@opencode-ai/util/session-title-fallback"
 import { getFilename } from "@opencode-ai/core/util/path"
 import { A, useParams } from "@solidjs/router"
 import { type Accessor, createMemo, For, type JSX, Match, Show, Switch } from "solid-js"
@@ -15,6 +14,7 @@ import { getAvatarColors, type LocalProject, useLayout } from "@/context/layout"
 import { useNotification } from "@/context/notification"
 import { usePermission } from "@/context/permission"
 import { messageAgentColor } from "@/utils/agent"
+import { sessionTitle } from "@/utils/session-title"
 import { sessionPermissionRequest } from "../session/composer/session-request-tree"
 import { childSessionOnPath, getProjectAvatarSource, hasProjectPermissions } from "./helpers"
 
@@ -104,7 +104,7 @@ const SessionRow = (props: {
   warmPress: () => void
   warmFocus: () => void
 }): JSX.Element => {
-  const title = () => displayLabel(props.session)
+  const title = () => sessionTitle(props.session.title)
 
   return (
     <A
@@ -229,7 +229,7 @@ export const SessionItem = (props: SessionItemProps): JSX.Element => {
               fallback={
                 <Tooltip
                   placement={props.mobile ? "bottom" : "right"}
-                  value={displayLabel(props.session)}
+                  value={sessionTitle(props.session.title)}
                   gutter={10}
                   class="min-w-0 w-full"
                 >

packages/app/src/pages/session/timeline/message-timeline.tsx

@@ -70,7 +70,7 @@ import { legacySessionHref, requireServerKey, sessionHref } from "@/utils/sessio
 import { useSDK } from "@/context/sdk"
 import { useSync } from "@/context/sync"
 import { notifySessionTabsRemoved } from "@/components/titlebar-session-events"
-import { displayLabel } from "@opencode-ai/util/session-title-fallback"
+import { sessionTitle } from "@/utils/session-title"
 import { scheduleConnectedMeasure } from "./measure"
 import { observeElementOffsetReconnectAware } from "./observe-element-offset"
 import { createTimelineProjection } from "./projection"
@@ -296,11 +296,8 @@ export function MessageTimeline(props: {
     if (!id) return
     return sync().session.get(id)
   })
-  const titleLabel = createMemo(() => {
-    const session = info()
-    if (!session) return
-    return displayLabel(session)
-  })
+  const titleValue = createMemo(() => info()?.title)
+  const titleLabel = createMemo(() => sessionTitle(titleValue()))
   const shareUrl = createMemo(() => info()?.share?.url)
   const shareEnabled = createMemo(() => sync().data.config.share !== "disabled")
   const parentID = createMemo(() => info()?.parentID)
@@ -314,10 +311,7 @@ export function MessageTimeline(props: {
     if (!id) return emptyMessages
     return sync().data.message[id] ?? emptyMessages
   })
-  const parentTitle = createMemo(() => {
-    const session = parent()
-    return session ? displayLabel(session) : language.t("command.session.new")
-  })
+  const parentTitle = createMemo(() => sessionTitle(parent()?.title) ?? language.t("command.session.new"))
   const getMsgParts = (msgId: string) => sync().data.part[msgId] ?? emptyParts
   const getMsgPart = (messageID: string, partID: string) => getMsgParts(messageID).find((part) => part.id === partID)
   const childTaskDescription = createMemo(() => {
@@ -335,7 +329,7 @@ export function MessageTimeline(props: {
     if (value) return value
     return language.t("command.session.new")
   })
-  const showHeader = createMemo(() => !!(titleLabel() || parentID()))
+  const showHeader = createMemo(() => !!(titleValue() || parentID()))
   const projection = createTimelineProjection({
     messages: sessionMessages,
     userMessages: () => props.userMessages,
@@ -918,10 +912,9 @@ export function MessageTimeline(props: {
   }
 
   function DialogDeleteSession(props: { sessionID: string }) {
-    const name = createMemo(() => {
-      const session = sync().session.get(props.sessionID)
-      return session ? displayLabel(session) : language.t("command.session.new")
-    })
+    const name = createMemo(
+      () => sessionTitle(sync().session.get(props.sessionID)?.title) ?? language.t("command.session.new"),
+    )
     const handleDelete = async () => {
       await deleteSession(props.sessionID)
       dialog.close()

packages/app/src/pages/session/timeline/observe-element-offset.test.ts

@@ -38,19 +38,17 @@ test("reports a divergent native offset once and ignores equal offsets and unrel
     instance.scrollOffset = offset
   })
 
+  document.body.append(unrelated)
+  unrelated.remove()
+  await frames(2)
+  expect(calls).toEqual([])
+
   route.remove()
   document.body.append(route)
   await new Promise((resolve) => setTimeout(resolve, 0))
   await frames(3)
   expect(calls).toEqual([[0, false]])
 
-  instance.scrollOffset = 79_400
-  document.body.append(unrelated)
-  unrelated.remove()
-  await frames(2)
-  expect(calls).toEqual([[0, false]])
-
-  instance.scrollOffset = 0
   route.remove()
   document.body.append(route)
   await new Promise((resolve) => setTimeout(resolve, 0))

packages/app/src/utils/session-title.ts

@@ -0,0 +1,7 @@
+const pattern = /^(New session|Child session) - \d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z$/
+
+export function sessionTitle(title?: string) {
+  if (!title) return title
+  const match = title.match(pattern)
+  return match?.[1] ?? title
+}

packages/app/src/utils/session.ts

@@ -1,6 +1,5 @@
 import type { SessionApi, SessionInfo, SessionListInput } from "@opencode-ai/client/promise"
 import type { Session } from "@opencode-ai/sdk/v2/client"
-import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"
 
 export function normalizeSessionInfo(input: SessionInfo | Session): Session {
   if (!("location" in input)) return input
@@ -14,7 +13,7 @@ export function normalizeSessionInfo(input: SessionInfo | Session): Session {
     parentID: input.parentID,
     cost: input.cost,
     tokens: input.tokens,
-    title: withTimestampedFallback(input),
+    title: input.title,
     agent: input.agent,
     model: input.model,
     version: "",

packages/cli/script/node-assets.ts

@@ -58,9 +58,8 @@ export async function collectNodeAssets(target: NodeTarget) {
         source: path.join(ptyRoot, relative),
       })),
   ]
-  const unique = [...new Map(assets.map((asset) => [asset.key, asset])).values()]
-  await Promise.all(unique.map((asset) => stat(asset.source)))
-  return unique
+  await Promise.all(assets.map((asset) => stat(asset.source)))
+  return assets
 }
 
 export async function hashNodeAssets(assets: readonly NodeAsset[]) {

packages/cli/src/acp/service.ts

@@ -8,7 +8,6 @@ import {
   type SessionMessageInfo,
   type SkillInfo,
 } from "@opencode-ai/client/promise"
-import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"
 import type {
   AgentSideConnection,
   AuthenticateRequest,
@@ -214,7 +213,7 @@ export function make(input: { readonly client: OpenCodeClient; readonly connecti
         sessions: page.data.map((session) => ({
           sessionId: session.id,
           cwd: session.location.directory,
-          title: withTimestampedFallback(session),
+          title: session.title,
           updatedAt: new Date(session.time.updated).toISOString(),
         })),
         ...(page.cursor.next ? { nextCursor: page.cursor.next } : {}),

packages/cli/test/node-assets.test.ts

@@ -1,17 +0,0 @@
-import { expect, test } from "bun:test"
-import { fileURLToPath } from "node:url"
-import { collectNodeAssets } from "../script/node-assets"
-import { nodeTarget, shellParserWasmAssets } from "../src/node/target"
-
-test("collects each SEA asset key once", async () => {
-  const assets = await collectNodeAssets(nodeTarget(process.platform, process.arch))
-  const keys = assets.map((asset) => asset.key)
-
-  expect(new Set(keys).size).toBe(keys.length)
-  expect(assets.filter((asset) => asset.key === shellParserWasmAssets.runtime)).toEqual([
-    {
-      key: shellParserWasmAssets.runtime,
-      source: fileURLToPath(import.meta.resolve(shellParserWasmAssets.runtime)),
-    },
-  ])
-})

packages/client/src/effect/api/api.ts

@@ -370,6 +370,15 @@ export type Endpoint5_26Output =
             readonly input: SessionPending.Message
           }
         }
+      | {
+          readonly id: Event.ID
+          readonly created: DateTime.Utc
+          readonly metadata?: { readonly [x: string]: unknown } | undefined
+          readonly type: "session.input.withdrawn"
+          readonly durable: { readonly aggregateID: string; readonly seq: Event.Seq; readonly version: Event.Version }
+          readonly location?: Location.Ref | undefined
+          readonly data: { readonly sessionID: Session.ID; readonly inputID: SessionMessage.ID }
+        }
       | {
           readonly id: Event.ID
           readonly created: DateTime.Utc
@@ -841,6 +850,12 @@ export type Endpoint5_29Input = { readonly sessionID: Session.ID; readonly messa
 export type Endpoint5_29Output = SessionMessage.Info
 export type SessionMessageOperation<E = never> = (input: Endpoint5_29Input) => Effect.Effect<Endpoint5_29Output, E>
 
+export type Endpoint5_30Input = { readonly sessionID: Session.ID; readonly inputID: SessionMessage.ID }
+export type Endpoint5_30Output = boolean
+export type SessionPendingWithdrawOperation<E = never> = (
+  input: Endpoint5_30Input,
+) => Effect.Effect<Endpoint5_30Output, E>
+
 export interface SessionApi<E = never> {
   readonly list: SessionListOperation<E>
   readonly create: SessionCreateOperation<E>
@@ -865,7 +880,10 @@ export interface SessionApi<E = never> {
     readonly commit: SessionRevertCommitOperation<E>
   }
   readonly context: SessionContextOperation<E>
-  readonly pending: { readonly list: SessionPendingListOperation<E> }
+  readonly pending: {
+    readonly list: SessionPendingListOperation<E>
+    readonly withdraw: SessionPendingWithdrawOperation<E>
+  }
   readonly instructions: {
     readonly entry: {
       readonly list: SessionInstructionsEntryListOperation<E>

packages/client/src/effect/generated/client.ts

@@ -76,6 +76,8 @@ import type {
   Endpoint5_28Output,
   Endpoint5_29Input,
   Endpoint5_29Output,
+  Endpoint5_30Input,
+  Endpoint5_30Output,
   Endpoint6_0Input,
   Endpoint6_0Output,
   Endpoint7_0Input,
@@ -550,6 +552,14 @@ const Endpoint5_29 = (raw: RawClient["server.session"]) => (input: Endpoint5_29I
     ),
   )
 
+const Endpoint5_30 = (raw: RawClient["server.session"]) => (input: Endpoint5_30Input) =>
+  preserveEffect<Endpoint5_30Output>()(
+    raw["session.pending.withdraw"]({ params: { sessionID: input["sessionID"], inputID: input["inputID"] } }).pipe(
+      Effect.mapError(mapClientError),
+      Effect.map((value) => value.data),
+    ),
+  )
+
 const adaptGroup5 = (raw: RawClient["server.session"]) => ({
   list: Endpoint5_0(raw),
   create: Endpoint5_1(raw),
@@ -570,7 +580,7 @@ const adaptGroup5 = (raw: RawClient["server.session"]) => ({
   wait: Endpoint5_16(raw),
   revert: { stage: Endpoint5_17(raw), clear: Endpoint5_18(raw), commit: Endpoint5_19(raw) },
   context: Endpoint5_20(raw),
-  pending: { list: Endpoint5_21(raw) },
+  pending: { list: Endpoint5_21(raw), withdraw: Endpoint5_30(raw) },
   instructions: { entry: { list: Endpoint5_22(raw), put: Endpoint5_23(raw), remove: Endpoint5_24(raw) } },
   generate: Endpoint5_25(raw),
   log: Endpoint5_26(raw),

packages/client/src/promise/generated/client.ts

@@ -70,6 +70,8 @@ import type {
   SessionBackgroundOutput,
   SessionMessageInput,
   SessionMessageOutput,
+  SessionPendingWithdrawInput,
+  SessionPendingWithdrawOutput,
   MessageListInput,
   MessageListOutput,
   ModelListInput,
@@ -732,6 +734,17 @@ export function make(options: ClientOptions) {
             },
             requestOptions,
           ).then((value) => value.data),
+        withdraw: (input: SessionPendingWithdrawInput, requestOptions?: RequestOptions) =>
+          request<{ readonly data: SessionPendingWithdrawOutput }>(
+            {
+              method: "POST",
+              path: `/api/session/${encodeURIComponent(input.sessionID)}/pending/${encodeURIComponent(input.inputID)}/withdraw`,
+              successStatus: 200,
+              declaredStatuses: [404, 400, 401],
+              empty: false,
+            },
+            requestOptions,
+          ).then((value) => value.data),
       },
       instructions: {
         entry: {

packages/client/src/promise/generated/types.ts

@@ -637,6 +637,16 @@ export type SessionInputPromoted = {
   data: { sessionID: string; inputID: string }
 }
 
+export type SessionInputWithdrawn = {
+  id: string
+  created: number
+  metadata?: { [x: string]: any }
+  type: "session.input.withdrawn"
+  durable: { aggregateID: string; seq: number; version: 1 }
+  location?: LocationRef
+  data: { sessionID: string; inputID: string }
+}
+
 export type SessionExecutionStarted = {
   id: string
   created: number
@@ -1757,7 +1767,7 @@ export type SessionInfo = {
   cost: MoneyUSD
   tokens: TokenUsageInfo
   time: { created: number; updated: number; archived?: number }
-  title?: string
+  title: string
   location: LocationRef
   subpath?: string
   revert?: SessionRevert
@@ -2006,7 +2016,7 @@ export type SessionV1Info = {
   cost?: number
   tokens?: { input: number; output: number; reasoning: number; cache: { read: number; write: number } }
   share?: { url: string }
-  title?: string
+  title: string
   agent?: string
   model?: { id: string; providerID: string; variant?: string }
   version: string
@@ -2157,6 +2167,7 @@ export type SessionEventDurable =
   | SessionForked
   | SessionInputPromoted
   | SessionInputAdmitted
+  | SessionInputWithdrawn
   | SessionExecutionStarted
   | SessionExecutionSucceeded
   | SessionExecutionFailed
@@ -2252,6 +2263,7 @@ export type V2Event =
   | SessionForked
   | SessionInputPromoted
   | SessionInputAdmitted
+  | SessionInputWithdrawn
   | SessionExecutionStarted
   | SessionExecutionSucceeded
   | SessionExecutionFailed
@@ -3207,6 +3219,13 @@ export type SessionMessageInput = {
 
 export type SessionMessageOutput = { data: SessionMessageInfo }["data"]
 
+export type SessionPendingWithdrawInput = {
+  readonly sessionID: { readonly sessionID: string; readonly inputID: string }["sessionID"]
+  readonly inputID: { readonly sessionID: string; readonly inputID: string }["inputID"]
+}
+
+export type SessionPendingWithdrawOutput = { data: boolean }["data"]
+
 export type MessageListInput = {
   readonly sessionID: { readonly sessionID: string }["sessionID"]
   readonly limit?: {

packages/client/test/promise.test.ts

@@ -300,7 +300,7 @@ test("session instructions methods use the public HTTP contract", async () => {
   ])
 })
 
-test("session.pending.list uses the public HTTP contract", async () => {
+test("session.pending uses the public HTTP contract", async () => {
   const requests: Array<{ method: string; url: string }> = []
   const pending = [
     {
@@ -317,14 +317,22 @@ test("session.pending.list uses the public HTTP contract", async () => {
     fetch: async (input, init) => {
       const request = input instanceof Request ? input : new Request(input, init)
       requests.push({ method: request.method, url: request.url })
-      return Response.json({ data: pending })
+      return Response.json({ data: request.method === "GET" ? pending : true })
     },
   })
 
   const result = await client.session.pending.list({ sessionID: "ses_test" })
+  const withdrawn = await client.session.pending.withdraw({ sessionID: "ses_test", inputID: "msg_pending" })
 
   expect(result).toEqual(pending)
-  expect(requests).toEqual([{ method: "GET", url: "http://localhost:3000/api/session/ses_test/pending" }])
+  expect(withdrawn).toBe(true)
+  expect(requests).toEqual([
+    { method: "GET", url: "http://localhost:3000/api/session/ses_test/pending" },
+    {
+      method: "POST",
+      url: "http://localhost:3000/api/session/ses_test/pending/msg_pending/withdraw",
+    },
+  ])
 })
 
 test("event.subscribe exposes the Promise event stream wire projection", async () => {

packages/core/schema.json

@@ -1,9 +1,9 @@
 {
   "version": "7",
   "dialect": "sqlite",
-  "id": "e43ed7e2-b9fc-4178-beae-3646e4a976e1",
+  "id": "db37a97f-9b5e-4c87-be8b-4feace35136c",
   "prevIds": [
-    "db37a97f-9b5e-4c87-be8b-4feace35136c"
+    "a4ba73b4-21bc-41ab-a415-94e2ca38d798"
   ],
   "ddl": [
     {
@@ -1302,7 +1302,7 @@
     },
     {
       "type": "text",
-      "notNull": false,
+      "notNull": true,
       "autoincrement": false,
       "default": null,
       "generated": null,

packages/core/src/aisdk-native.ts

@@ -1,131 +0,0 @@
-export * as AISDKNative from "./aisdk-native"
-
-import { isRecord } from "@opencode-ai/ai/utils/record"
-import { Provider } from "./provider"
-
-export interface Mapping {
-  readonly package: string
-  readonly settings: Readonly<Record<string, unknown>>
-  readonly headers?: Readonly<Record<string, string>>
-  readonly body?: Readonly<Record<string, unknown>>
-}
-
-export function map(packageName: string | undefined, settings: Readonly<Record<string, unknown>>): Mapping | undefined {
-  const baseSettings = mapBaseSettings(settings)
-  switch (packageName) {
-    case "@ai-sdk/google":
-      return {
-        package: "@opencode-ai/ai/providers/google",
-        settings: {
-          ...baseSettings,
-          ...mapAPIKey(settings),
-          ...mapGoogleOptions(settings),
-        },
-      }
-    case "@openrouter/ai-sdk-provider":
-      return mapOpenRouter(settings, baseSettings)
-    case "@ai-sdk/xai":
-      return {
-        package: "@opencode-ai/ai/providers/xai",
-        settings: {
-          ...baseSettings,
-          ...mapAPIKey(settings),
-          ...mapXAIOptions(settings),
-        },
-      }
-  }
-}
-
-function mapBaseSettings(settings: Readonly<Record<string, unknown>>) {
-  return {
-    ...(typeof settings.baseURL === "string" ? { baseURL: settings.baseURL } : {}),
-  }
-}
-
-function mapAPIKey(settings: Readonly<Record<string, unknown>>) {
-  return typeof settings.apiKey === "string" ? { apiKey: settings.apiKey } : {}
-}
-
-function mapGoogleOptions(settings: Readonly<Record<string, unknown>>) {
-  const input = settings.thinkingConfig
-  const thinkingConfig = {
-    ...(isRecord(input) && typeof input.thinkingBudget === "number" ? { thinkingBudget: input.thinkingBudget } : {}),
-    ...(isRecord(input) && typeof input.includeThoughts === "boolean"
-      ? { includeThoughts: input.includeThoughts }
-      : {}),
-    ...(isRecord(input) && typeof input.thinkingLevel === "string" ? { thinkingLevel: input.thinkingLevel } : {}),
-  }
-  const options = {
-    ...(typeof settings.cachedContent === "string" ? { cachedContent: settings.cachedContent } : {}),
-    ...(Array.isArray(settings.safetySettings) ? { safetySettings: settings.safetySettings } : {}),
-    ...(typeof settings.serviceTier === "string" ? { serviceTier: settings.serviceTier } : {}),
-    ...(Object.keys(thinkingConfig).length > 0 ? { thinkingConfig } : {}),
-  }
-  if (Object.keys(options).length === 0) return {}
-  return { providerOptions: { gemini: options } }
-}
-
-function mapOpenRouter(
-  settings: Readonly<Record<string, unknown>>,
-  baseSettings: Readonly<Record<string, unknown>>,
-): Mapping {
-  const headers =
-    Provider.mergeHeaders(
-      {
-        ...(typeof settings.appName === "string" ? { "X-OpenRouter-Title": settings.appName } : {}),
-        ...(typeof settings.appUrl === "string" ? { "HTTP-Referer": settings.appUrl } : {}),
-        ...(isStringRecord(settings.api_keys) && Object.keys(settings.api_keys).length > 0
-          ? { "X-Provider-API-Keys": JSON.stringify(settings.api_keys) }
-          : {}),
-      },
-      isStringRecord(settings.headers) ? settings.headers : undefined,
-    ) ?? {}
-  return {
-    package: "@opencode-ai/ai/providers/openrouter",
-    settings: {
-      ...baseSettings,
-      ...mapAPIKey(settings),
-      ...mapOpenRouterOptions(settings),
-    },
-    ...(Object.keys(headers).length > 0 ? { headers } : {}),
-    ...(isRecord(settings.extraBody) ? { body: settings.extraBody } : {}),
-  }
-}
-
-function mapOpenRouterOptions(settings: Readonly<Record<string, unknown>>) {
-  const options = Object.fromEntries(
-    Object.entries(settings).filter(
-      ([key]) =>
-        ![
-          "apiKey",
-          "api_keys",
-          "appName",
-          "appUrl",
-          "authToken",
-          "baseURL",
-          "chunkTimeout",
-          "compatibility",
-          "extraBody",
-          "fetch",
-          "headers",
-          "timeout",
-        ].includes(key),
-    ),
-  )
-  if (Object.keys(options).length === 0) return {}
-  return { providerOptions: { openrouter: options } }
-}
-
-function isStringRecord(value: unknown): value is Readonly<Record<string, string>> {
-  return isRecord(value) && Object.values(value).every((item) => typeof item === "string")
-}
-
-function mapXAIOptions(settings: Readonly<Record<string, unknown>>) {
-  const options = {
-    ...(typeof settings.reasoningEffort === "string" ? { reasoningEffort: settings.reasoningEffort } : {}),
-    ...(typeof settings.store === "boolean" ? { store: settings.store } : {}),
-    ...(typeof settings.promptCacheKey === "string" ? { promptCacheKey: settings.promptCacheKey } : {}),
-  }
-  if (Object.keys(options).length === 0) return {}
-  return { providerOptions: { xai: options } }
-}

packages/core/src/aisdk.ts

@@ -332,7 +332,7 @@ function modelFromLanguage(info: Info, language: LanguageModelV3) {
               body: projected.body === undefined ? undefined : { ...projected.body },
               headers: info.headers,
             },
-      limits: { context: info.limit.context, input: info.limit.input, output: info.limit.output },
+      limits: { context: info.limit.context, output: info.limit.output },
       providerOptions,
     },
     body: {

packages/core/src/config.ts

@@ -16,7 +16,7 @@ import { Global } from "@opencode-ai/util/global"
 import { Location } from "./location"
 import { AbsolutePath } from "./schema"
 import { ConfigAgent } from "./config/agent"
-import { ConfigMedia } from "./config/media"
+import { ConfigAttachments } from "./config/attachments"
 import { ConfigCompaction } from "./config/compaction"
 import { ConfigCommand } from "./config/command"
 import { ConfigExperimental } from "./config/experimental"
@@ -85,8 +85,8 @@ export class Info extends Schema.Class<Info>("Config.Info")({
   lsp: ConfigLSP.Info.pipe(Schema.optional).annotate({
     description: "Enable built-in language servers or configure server overrides",
   }),
-  media: ConfigMedia.Info.pipe(Schema.optional).annotate({
-    description: "Media processing configuration",
+  attachments: ConfigAttachments.Info.pipe(Schema.optional).annotate({
+    description: "Attachment processing configuration",
   }),
   tool_output: ConfigToolOutput.Info.pipe(Schema.optional).annotate({
     description: "Tool output truncation thresholds",

packages/core/src/config/attachments.ts

@@ -1,15 +1,15 @@
-export * as ConfigMedia from "./media"
+export * as ConfigAttachments from "./attachments"
 
 import { Schema } from "effect"
 import { PositiveInt } from "../schema"
 
-export class Image extends Schema.Class<Image>("Config.Media.Image")({
+export class Image extends Schema.Class<Image>("Config.Attachments.Image")({
   auto_resize: Schema.Boolean.pipe(Schema.optional),
   max_width: PositiveInt.pipe(Schema.optional),
   max_height: PositiveInt.pipe(Schema.optional),
   max_base64_bytes: PositiveInt.pipe(Schema.optional),
 }) {}
 
-export class Info extends Schema.Class<Info>("Config.Media")({
+export class Info extends Schema.Class<Info>("Config.Attachments")({
   image: Image.pipe(Schema.optional),
 }) {}

packages/core/src/database/migration.gen.ts

@@ -58,6 +58,5 @@ export const migrations = (
     import("./migration/20260722011141_delete_tool_progress_events"),
     import("./migration/20260722170000_canonical_tool_results"),
     import("./migration/20260729022634_session_fork_boundary"),
-    import("./migration/20260730195856_optional_session_title"),
   ])
 ).map((module) => module.default) satisfies DatabaseMigration.Migration[]

packages/core/src/database/migration/20260730195856_optional_session_title.ts

@@ -1,14 +0,0 @@
-import { Effect } from "effect"
-import type { DatabaseMigration } from "../migration"
-
-export default {
-  id: "20260730195856_optional_session_title",
-  up(tx) {
-    return Effect.gen(function* () {
-      yield* tx.run(`ALTER TABLE \`session\` RENAME COLUMN \`title\` TO \`title_old\``)
-      yield* tx.run(`ALTER TABLE \`session\` ADD COLUMN \`title\` text`)
-      yield* tx.run(`UPDATE \`session\` SET \`title\` = \`title_old\``)
-      yield* tx.run(`ALTER TABLE \`session\` DROP COLUMN \`title_old\``)
-    })
-  },
-} satisfies DatabaseMigration.Migration

packages/core/src/database/schema.gen.ts

@@ -217,7 +217,7 @@ export default {
           \`slug\` text NOT NULL,
           \`directory\` text NOT NULL,
           \`path\` text,
-          \`title\` text,
+          \`title\` text NOT NULL,
           \`version\` text NOT NULL,
           \`share_url\` text,
           \`summary_additions\` integer,

packages/core/src/image.ts

@@ -61,7 +61,7 @@ const layer = Layer.effect(
       const image = Object.assign(
         {},
         ...(yield* config.entries()).flatMap((entry) =>
-          entry.type === "document" && entry.info.media?.image ? [entry.info.media.image] : [],
+          entry.type === "document" && entry.info.attachments?.image ? [entry.info.attachments.image] : [],
         ),
       )
       const normalize = yield* loadAdapter

packages/core/src/model-resolver.ts

@@ -12,12 +12,12 @@ import { Auth, type AnyRoute } from "@opencode-ai/ai/route"
 import { Context, Effect, Layer, Schema } from "effect"
 import { produce } from "immer"
 import { AISDK } from "./aisdk"
-import { AISDKNative } from "./aisdk-native"
 import { Catalog } from "./catalog"
 import { Credential } from "./credential"
 import { Integration } from "./integration"
 import { Capabilities, ID, Info, Ref, VariantID } from "./model"
 import { Npm } from "@opencode-ai/util/npm"
+import { OpenAICodex } from "./plugin/provider/openai-codex"
 import { Provider } from "./provider"
 
 export class VariantUnavailableError extends Schema.TaggedErrorClass<VariantUnavailableError>()(
@@ -81,7 +81,7 @@ const withDefaults = (model: Info, route: AnyRoute) =>
     headers: providerHeaders(model),
     providerOptions: providerOptions(model),
     http: model.body === undefined ? undefined : { body: model.body },
-    limits: { context: model.limit.context, input: model.limit.input, output: model.limit.output },
+    limits: { context: model.limit.context, output: model.limit.output },
   })
 
 const providerHeaders = (model: Info) => {
@@ -96,7 +96,9 @@ const providerHeaders = (model: Info) => {
   return Provider.mergeHeaders(generated.size === 0 ? undefined : Object.fromEntries(generated), model.headers)
 }
 
-const providerOptions = (model: Info): { readonly [key: string]: { readonly [key: string]: unknown } } | undefined => {
+const providerOptions = (
+  model: Info,
+): { readonly [key: string]: { readonly [key: string]: unknown } } | undefined => {
   if (!Provider.isAISDK(model.package) || model.settings === undefined) return undefined
   const { apiKey: _, baseURL: _baseURL, ...settings } = model.settings
   if (Object.keys(settings).length === 0) return undefined
@@ -150,7 +152,12 @@ export const fromCatalogModel = (
   const packageName = Provider.packageName(resolved.package)
   const key = apiKey(resolved, credential)
 
+  if (OpenAICodex.isChatGPT(credential) && !Provider.isAISDK(resolved.package) && isNativeOpenAI(resolved.package)) {
+    return Effect.succeed(codexModel(resolved, credential, key))
+  }
+
   if (Provider.isAISDK(resolved.package) && packageName === "@ai-sdk/openai") {
+    if (OpenAICodex.isChatGPT(credential)) return Effect.succeed(codexModel(resolved, credential, key))
     return Effect.succeed(
       withDefaults(resolved, OpenAIResponses.route)
         .with({ auth: key === undefined ? Auth.none : Auth.bearer(key) })
@@ -175,10 +182,8 @@ export const fromCatalogModel = (
         .model({ id: resolved.modelID ?? resolved.id, compatibility: resolved.compatibility }),
     )
   }
-  const configured = { ...resolved.settings, ...credential?.metadata }
-  const mapping = Provider.isAISDK(resolved.package) ? AISDKNative.map(packageName, configured) : undefined
-  const native = mapping?.package ?? resolved.package
-  if (Provider.isAISDK(resolved.package) && !mapping) {
+  const native = Provider.isAISDK(resolved.package) ? nativePackage(packageName) : resolved.package
+  if (Provider.isAISDK(resolved.package) && !native) {
     if (!dependencies?.loadAISDK) return Effect.fail(unsupported(resolved))
     const runtime = produce(resolved, (draft) => {
       draft.settings = Provider.mergeOverlay(draft.settings, {
@@ -196,13 +201,15 @@ export const fromCatalogModel = (
     const module = yield* (dependencies?.loadPackage ?? Provider.loadPackage)(specifier).pipe(
       Effect.mapError(() => unsupported(resolved)),
     )
-    const mapped = mapping?.settings ?? configured
+    const configured = { ...resolved.settings, ...credential?.metadata }
+    const providerOptions = nativeProviderOptions(packageName, configured)
     const settings = {
-      ...(credential ? withoutNativeAuthSettings(mapped) : mapped),
+      ...(credential ? withoutNativeAuthSettings(configured) : configured),
       ...nativeCredentialSettings(specifier, credential),
-      headers: Provider.mergeHeaders(mapping?.headers, resolved.headers),
-      body: Provider.mergeOverlay(mapping?.body, resolved.body),
-      limits: { context: resolved.limit.context, input: resolved.limit.input, output: resolved.limit.output },
+      headers: resolved.headers,
+      body: resolved.body,
+      limits: { context: resolved.limit.context, output: resolved.limit.output },
+      ...(providerOptions ? { providerOptions } : {}),
     }
     return yield* Effect.try({
       try: () => {
@@ -219,6 +226,30 @@ export const fromCatalogModel = (
   })
 }
 
+const nativePackage = (packageName: string | undefined) => {
+  if (packageName === "@ai-sdk/google") return "@opencode-ai/ai/providers/google"
+  if (packageName === "@openrouter/ai-sdk-provider") return "@opencode-ai/ai/providers/openrouter"
+  if (packageName === "@ai-sdk/xai") return "@opencode-ai/ai/providers/xai"
+  return undefined
+}
+
+const nativeProviderOptions = (packageName: string | undefined, settings: Readonly<Record<string, unknown>>) => {
+  const values = Object.fromEntries(
+    Object.entries(settings).filter(
+      ([key]) => !["apiKey", "authToken", "baseURL", "chunkTimeout", "fetch", "timeout"].includes(key),
+    ),
+  )
+  if (Object.keys(values).length === 0) return undefined
+  if (packageName === "@ai-sdk/google") return { gemini: values }
+  if (packageName === "@openrouter/ai-sdk-provider") return { openrouter: values }
+  if (packageName === "@ai-sdk/xai") return { xai: values }
+  return undefined
+}
+
+const isNativeOpenAI = (packageName: string | undefined) =>
+  packageName === "@opencode-ai/ai/providers/openai" ||
+  packageName?.startsWith("@opencode-ai/ai/providers/openai/") === true
+
 const nativeCredentialSettings = (specifier: string, credential: Credential.Value | undefined) => {
   if (!credential) return {}
   if (credential.type === "key") return { apiKey: credential.key }
@@ -240,6 +271,22 @@ const withoutNativeAuthSettings = (settings: Record<string, unknown>) => {
   return rest
 }
 
+const codexModel = (
+  model: Info,
+  credential: Credential.Value | undefined,
+  key: ReturnType<typeof Auth.value> | undefined,
+) => {
+  const account = OpenAICodex.accountID(credential)
+  return withDefaults(model, OpenAIResponses.route)
+    .with({
+      endpoint: { baseURL: OpenAICodex.baseURL },
+      auth: (key === undefined ? Auth.none : Auth.bearer(key)).andThen(
+        account === undefined ? Auth.none : Auth.headers({ "chatgpt-account-id": account }),
+      ),
+    })
+    .model({ id: model.modelID ?? model.id, compatibility: model.compatibility })
+}
+
 const unsupported = (model: Info) =>
   new UnsupportedPackageError({
     providerID: model.providerID,
@@ -264,7 +311,10 @@ export const layer = Layer.effect(
     const integrations = yield* Integration.Service
     const npm = yield* Npm.Service
     const aisdk = yield* AISDK.Service
-    const load = Effect.fn("ModelResolver.resolveModel")(function* (selected: Info, variant?: VariantID) {
+    const load = Effect.fn("ModelResolver.resolveModel")(function* (
+      selected: Info,
+      variant?: VariantID,
+    ) {
       const provider = yield* catalog.provider.get(selected.providerID)
       const connection = yield* integrations.connection.active(
         provider?.integrationID ?? Integration.ID.make(selected.providerID),

packages/core/src/plugin/provider/openai-codex.ts

@@ -0,0 +1,42 @@
+export * as OpenAICodex from "./openai-codex"
+
+// TEMPORARY SEAM (#34765): plugins have no hook into LLM route construction, so
+// Codex routing lives in ModelResolver and catalog filtering.
+// in OpenAIPlugin, sharing this module. Once the native provider packages land
+// (#33689/#33925/#34462) this should collapse into the native OpenAI provider.
+// The eligibility rules mirror V1's CodexAuthPlugin allowlist; models.dev has no
+// plan-eligibility data for OpenAI today, but models other vendors' subscriptions
+// as dedicated providers (e.g. zai-coding-plan) - a future openai-chatgpt-plan
+// provider entry could replace the hardcoded rules with catalog data.
+
+/** ChatGPT-plan requests must target the codex backend instead of the public API. */
+export const baseURL = "https://chatgpt.com/backend-api/codex"
+
+const methodIDs: readonly string[] = ["chatgpt-browser", "chatgpt-headless"]
+
+/** Structural credential shape so both core and plugin-facing credential types fit. */
+type CredentialLike = {
+  readonly type: string
+  readonly methodID?: string
+  readonly metadata?: Record<string, unknown> | undefined
+}
+
+export const isChatGPT = (credential: CredentialLike | undefined) =>
+  credential?.type === "oauth" && credential.methodID !== undefined && methodIDs.includes(credential.methodID)
+
+export const accountID = (credential: CredentialLike | undefined) => {
+  if (!isChatGPT(credential)) return undefined
+  const value = credential?.metadata?.accountID
+  return typeof value === "string" ? value : undefined
+}
+
+const allowed = new Set(["gpt-5.5", "gpt-5.3-codex-spark", "gpt-5.4", "gpt-5.4-mini"])
+const disallowed = new Set(["gpt-5.5-pro", "gpt-5.6"])
+
+/** Which API model ids a ChatGPT subscription may call through the codex backend. */
+export const eligible = (apiID: string) => {
+  if (allowed.has(apiID)) return true
+  if (disallowed.has(apiID)) return false
+  const match = apiID.match(/^gpt-(\d+\.\d+)/)
+  return match ? Number.parseFloat(match[1]) > 5.4 : false
+}

packages/core/src/plugin/provider/openai.ts

@@ -10,16 +10,14 @@ import { Model } from "../../model"
 import { OauthCallbackPage } from "../../oauth/page"
 import { Provider } from "../../provider"
 import type { PluginInternal } from "../internal"
+import { OpenAICodex } from "./openai-codex"
 
 const clientID = "app_EMoamEEZ73f0CkXaXp7hrann"
 const issuer = "https://auth.openai.com"
 const callbackPort = 1455
 const pollingSafetyMargin = 3000
-const codexBaseURL = "https://chatgpt.com/backend-api/codex"
 const browserMethodID = Integration.MethodID.make("chatgpt-browser")
 const headlessMethodID = Integration.MethodID.make("chatgpt-headless")
-const codexAllowed = new Set(["gpt-5.5", "gpt-5.3-codex-spark", "gpt-5.4", "gpt-5.4-mini"])
-const codexDisallowed = new Set(["gpt-5.5-pro", "gpt-5.6"])
 
 type Pkce = {
   verifier: string
@@ -166,18 +164,14 @@ export const OpenAIPlugin = define({
   effect: Effect.fn(function* (ctx) {
     const bus = yield* Bus.Service
     const loading = Semaphore.makeUnsafe(1)
-    let chatgpt: Credential.OAuth | undefined
+    let chatgpt = false
 
     const load = Effect.fn("OpenAIPlugin.load")(function* () {
       const connection = yield* ctx.integration.connection.active("openai")
       const credential = connection
         ? yield* ctx.integration.connection.resolve(connection).pipe(Effect.catch(() => Effect.succeed(undefined)))
         : undefined
-      chatgpt =
-        credential?.type === "oauth" &&
-        (credential.methodID === browserMethodID || credential.methodID === headlessMethodID)
-          ? credential
-          : undefined
+      chatgpt = OpenAICodex.isChatGPT(credential)
     })
 
     yield* ctx.integration.transform((draft) => {
@@ -189,19 +183,16 @@ export const OpenAIPlugin = define({
       for (const item of evt.provider.list()) {
         if (!Provider.isAISDK(item.provider.package)) continue
         if (Provider.packageName(item.provider.package) !== "@ai-sdk/openai") continue
-        evt.provider.update(item.provider.id, (provider) => {
-          provider.package = "@opencode-ai/ai/providers/openai"
+        if (!item.models.has(Model.ID.make("gpt-5-chat-latest"))) continue
+        evt.model.update(item.provider.id, Model.ID.make("gpt-5-chat-latest"), (model) => {
+          // OpenAIPlugin sends OpenAI models through Responses; this alias is a
+          // chat-completions-only model, so hide it only from OpenAI's catalog.
+          model.enabled = false
         })
       }
       if (!chatgpt) return
       const item = evt.provider.get(Provider.ID.openai)
       if (!item) return
-      item.provider.settings = Provider.mergeOverlay(item.provider.settings, { baseURL: codexBaseURL })
-      const account = chatgpt.metadata?.accountID
-      item.provider.headers = Provider.mergeHeaders(
-        item.provider.headers,
-        typeof account === "string" ? { "chatgpt-account-id": account } : undefined,
-      )
       for (const model of item.models.values()) {
         // ChatGPT-plan tokens only authorize codex-eligible models, and the
         // subscription covers usage, so hide the rest and zero the cost.
@@ -210,32 +201,14 @@ export const OpenAIPlugin = define({
             draft.enabled = false
             return
           }
-          const apiID = draft.modelID ?? draft.id
-          const match = apiID.match(/^gpt-(\d+\.\d+)/)
-          if (
-            !codexAllowed.has(apiID) &&
-            (codexDisallowed.has(apiID) || !match || Number.parseFloat(match[1]) <= 5.4)
-          ) {
+          if (!OpenAICodex.eligible(draft.modelID ?? draft.id)) {
             draft.enabled = false
             return
           }
           draft.cost = []
-          // Match Codex CLI so context consumption and subscription usage stay consistent between clients.
-          draft.limit = { ...draft.limit, context: 272_000, input: 272_000 }
         })
       }
     })
-    yield* ctx.session.hook("request", (evt) =>
-      Effect.sync(() => {
-        if (!chatgpt || evt.model.providerID !== Provider.ID.openai) return
-        const url = new URL(evt.url)
-        if (url.origin === "https://api.openai.com") {
-          evt.url = `${codexBaseURL}${url.pathname.replace(/^\/v1/, "")}${url.search}`
-        }
-        evt.headers.originator = "opencode"
-        evt.headers["session-id"] = evt.sessionID
-      }),
-    )
 
     const refresh = () => loading.withPermit(load().pipe(Effect.andThen(ctx.catalog.reload())))
     yield* bus.subscribe(Integration.Event.ConnectionUpdated).pipe(
@@ -243,6 +216,21 @@ export const OpenAIPlugin = define({
       Stream.runForEach(refresh),
       Effect.forkScoped({ startImmediately: true }),
     )
+    yield* ctx.aisdk.hook(
+      "sdk",
+      Effect.fn(function* (evt) {
+        if (evt.package !== "@ai-sdk/openai") return
+        const mod = yield* Effect.promise(() => import("@ai-sdk/openai"))
+        evt.sdk = mod.createOpenAI(evt.options)
+      }),
+    )
+    yield* ctx.aisdk.hook(
+      "language",
+      Effect.fn(function* (evt) {
+        if (evt.model.providerID !== Provider.ID.openai) return
+        evt.language = evt.sdk.responses(evt.model.modelID ?? evt.model.id)
+      }),
+    )
   }),
 } satisfies PluginInternal.InternalPlugin)
 

packages/core/src/session.ts

@@ -209,6 +209,10 @@ export interface Interface {
    * unhandled compaction barriers.
    */
   readonly pending: (sessionID: SessionSchema.ID) => Effect.Effect<SessionPending.Info[], NotFoundError>
+  readonly withdraw: (input: {
+    sessionID: SessionSchema.ID
+    inputID: SessionMessage.ID
+  }) => Effect.Effect<boolean, NotFoundError>
   /**
    * Durable, ordered session log read. Replays durable session bus after
    * the exclusive `after` cursor, emits a `Synced` marker at the captured
@@ -374,7 +378,7 @@ const layer = Layer.effect(
           directory: location.directory,
           path: path.relative(project.directory, location.directory).replaceAll("\\", "/"),
           workspaceID: location.workspaceID ? Workspace.ID.make(location.workspaceID) : undefined,
-          title: input.title,
+          title: input.title ?? `New session - ${new Date(now).toISOString()}`,
           agent: input.agent,
           model: input.model
             ? {
@@ -540,6 +544,10 @@ const layer = Layer.effect(
         yield* result.get(sessionID)
         return yield* SessionPending.list(db, sessionID)
       }),
+      withdraw: Effect.fn("Session.withdraw")(function* (input) {
+        yield* result.get(input.sessionID)
+        return yield* SessionPending.withdraw(db, bus, input)
+      }),
       log: (input) =>
         Stream.unwrap(
           result
@@ -938,7 +946,7 @@ const materializeAttachment = Effect.fn("Session.materializeAttachment")(functio
       : resolved.bytes
   const normalized = yield* normalizeImageAttachment(
     input,
-    Buffer.from(content).toString("base64"),
+    Base64.make(Buffer.from(content).toString("base64")),
     mime,
     image,
   )
@@ -954,11 +962,11 @@ const materializeAttachment = Effect.fn("Session.materializeAttachment")(functio
 
 const normalizeImageAttachment = Effect.fn("Session.normalizeImageAttachment")(function* (
   input: PromptInput.FileAttachment,
-  data: string,
+  data: Base64,
   mime: string,
   image: Effect.Effect<Image.Interface>,
 ) {
-  if (!mime.startsWith("image/")) return { data: Base64.make(data), mime }
+  if (!mime.startsWith("image/")) return { data, mime }
   const service = yield* image
   const label = input.name ?? (input.uri.startsWith("data:") ? "inline attachment" : input.uri)
   const content = { uri: label, content: data, encoding: "base64" as const, mime }

packages/core/src/session/compaction.ts

@@ -152,11 +152,14 @@ const settings = (documents: readonly Config.Entry[]) => {
   const configured = documents
     .filter((entry): entry is Config.Document => entry.type === "document")
     .flatMap((entry) => (entry.info.compaction ? [entry.info.compaction] : []))
-  return {
-    auto: configured.findLast((value) => value.auto !== undefined)?.auto ?? true,
-    buffer: configured.findLast((value) => value.buffer !== undefined)?.buffer ?? DEFAULT_BUFFER,
-    tokens: configured.findLast((value) => value.keep?.tokens !== undefined)?.keep?.tokens ?? DEFAULT_KEEP_TOKENS,
-  }
+  return configured.reduce<Settings>(
+    (result, current) => ({
+      auto: current.auto ?? result.auto,
+      buffer: current.buffer ?? result.buffer,
+      tokens: current.keep?.tokens ?? result.tokens,
+    }),
+    { auto: true, buffer: DEFAULT_BUFFER, tokens: DEFAULT_KEEP_TOKENS },
+  )
 }
 
 const select = (
@@ -347,16 +350,11 @@ const make = (dependencies: Dependencies) => {
         message.type === "assistant" && message.tokens !== undefined,
     )
     if (!last) return false
-    const limits = input.model.route.defaults.limits
-    const output = Math.min(limits?.output ?? 0, OUTPUT_TOKEN_MAX)
-    const promptCeiling = Math.min(
-      limits?.input === undefined ? Number.POSITIVE_INFINITY : limits.input - config.buffer,
-      context - Math.max(output, config.buffer),
-    )
+    const output = Math.min(input.model.route.defaults.limits?.output ?? 0, OUTPUT_TOKEN_MAX)
     const used =
       last.tokens.input + last.tokens.output + last.tokens.reasoning + last.tokens.cache.read + last.tokens.cache.write
     if (used <= 0) return false
-    return used >= promptCeiling
+    return used >= context - (output || config.buffer)
   }
   const compactManual = Effect.fn("SessionCompaction.compactManual")(function* (input: ManualInput) {
     const content = planContent(input.messages, config.tokens)

packages/core/src/session/generate-node.ts

@@ -71,7 +71,7 @@ export const layer = Layer.effect(
           LLM.request({
             model: model.model,
             http: { headers: SessionModelHeaders.make(selection.session, app) },
-            providerOptions: { [providerMetadataKey]: { promptCacheKey } },
+            providerOptions: { openai: { promptCacheKey } },
             system: contextEvent.system,
             messages: contextEvent.messages,
             tools: hookedTools,

packages/core/src/session/history.ts

@@ -117,20 +117,21 @@ export const preview = Effect.fn("SessionHistory.preview")(function* (
     .pipe(Effect.catch((error) => (error instanceof Instructions.InitializationBlocked ? error : Effect.die(error))))
 })
 
-/** Returns the session's first user message. */
-export const firstUserMessage = Effect.fn("SessionHistory.firstUserMessage")(function* (
+/** Returns the session's sole user message, or `undefined` once a second one exists. */
+export const firstUserMessageIfOnly = Effect.fn("SessionHistory.firstUserMessageIfOnly")(function* (
   db: DatabaseService,
   sessionID: SessionSchema.ID,
 ) {
-  const row = yield* db
+  const rows = yield* db
     .select()
     .from(SessionMessageTable)
     .where(and(eq(SessionMessageTable.session_id, sessionID), eq(SessionMessageTable.type, "user")))
     .orderBy(asc(SessionMessageTable.seq))
-    .get()
+    .limit(2)
+    .all()
     .pipe(Effect.orDie)
-  if (!row) return undefined
-  const message = yield* decodeMessageRow(row).pipe(Effect.catch(() => Effect.succeed(undefined)))
+  if (rows.length !== 1) return undefined
+  const message = yield* decodeMessageRow(rows[0]).pipe(Effect.catch(() => Effect.succeed(undefined)))
   return message?.type === "user" ? message : undefined
 })
 

packages/core/src/session/info.ts

@@ -17,7 +17,7 @@ export function fromRow(row: typeof SessionTable.$inferSelect): SessionSchema.In
   return SessionSchema.Info.make({
     id: SessionSchema.ID.make(row.id),
     projectID: Project.ID.make(row.project_id),
-    title: row.title ?? undefined,
+    title: row.title,
     parentID: row.parent_id ? SessionSchema.ID.make(row.parent_id) : undefined,
     fork:
       row.fork_session_id && row.fork_boundary

packages/core/src/session/message-updater.ts

@@ -175,6 +175,7 @@ export function update(adapter: Adapter, event: SessionEvent.Event) {
       "session.forked": () => Effect.void,
       "session.input.promoted": () => Effect.void,
       "session.input.admitted": () => Effect.void,
+      "session.input.withdrawn": () => Effect.void,
       "session.execution.started": () => Effect.void,
       "session.execution.succeeded": () => clearCurrentRetry,
       "session.execution.failed": () => clearCurrentRetry,

packages/core/src/session/model-request.ts

@@ -1,7 +1,6 @@
 export * as SessionModelRequest from "./model-request"
 
 import { LLM, Message, SystemPart, type LLMRequest } from "@opencode-ai/ai"
-import type { StreamOptions } from "@opencode-ai/ai/route"
 import type { Content } from "@opencode-ai/schema/tool"
 import { SessionError } from "@opencode-ai/schema/session-error"
 import { Cause, Config, Context, Effect, Layer, Result } from "effect"
@@ -19,11 +18,6 @@ import { MAX_STEPS_PROMPT } from "./runner/max-steps"
 import PROMPT_DEFAULT from "./runner/prompt/base.txt"
 import { toLLMMessages } from "./runner/to-llm-message"
 
-const IMAGE_BYTES_TRIGGER = 25 * 1024 * 1024 // 25 MiB
-const IMAGE_BYTES_TARGET = 15 * 1024 * 1024 // 15 MiB
-const IMAGE_REMOVED =
-  "[This image was removed to reduce the request size and is no longer visible. Do not make claims about its contents from memory. If needed, retrieve it again with an available tool or ask the user to attach it again.]"
-
 /** Failures a prepared execution can surface: infrastructure errors plus user declines resurfaced from the defect tunnel. */
 export type ExecuteError = Tool.Error | Permission.DeclinedError | QuestionTool.CancelledError
 
@@ -43,7 +37,6 @@ const declineDefect = (cause: Cause.Cause<Tool.Error>) => {
 
 interface Prepared {
   readonly request: LLMRequest
-  readonly options: StreamOptions
   /**
    * One request-scoped execution operation. Unknown, hook-removed, and
    * step-limit-violating calls fail individually through the same seam.
@@ -99,56 +92,6 @@ export const unsupportedParts = (messages: LLMRequest["messages"], capabilities:
     }),
   )
 
-export const boundImages = (messages: LLMRequest["messages"]) => {
-  const isImage = (mime: string) => mime.toLowerCase().startsWith("image/")
-  const size = (data: string | Uint8Array) =>
-    typeof data === "string" ? Buffer.byteLength(data) : Math.ceil(data.byteLength / 3) * 4
-  const imageBytes = messages.reduce(
-    (total, message) =>
-      total +
-      message.content.reduce((sum, part) => {
-        if (part.type === "media" && isImage(part.mediaType)) return sum + size(part.data)
-        if (part.type !== "tool-result" || part.result.type !== "content") return sum
-        return (
-          sum +
-          part.result.value.reduce(
-            (bytes: number, item: Content) =>
-              bytes + (item.type === "file" && isImage(item.mime) ? Buffer.byteLength(item.uri) : 0),
-            0,
-          )
-        )
-      }, 0),
-    0,
-  )
-  if (imageBytes <= IMAGE_BYTES_TRIGGER) return messages
-
-  let removed = 0
-  return messages.map((message) =>
-    Message.make({
-      ...message,
-      content: message.content.map((part) => {
-        if (part.type === "media" && isImage(part.mediaType) && imageBytes - removed > IMAGE_BYTES_TARGET) {
-          removed += size(part.data)
-          return Message.text(IMAGE_REMOVED)
-        }
-        if (part.type !== "tool-result" || part.result.type !== "content") return part
-        return {
-          ...part,
-          result: {
-            ...part.result,
-            value: part.result.value.map((item: Content) => {
-              if (item.type !== "file" || !isImage(item.mime) || imageBytes - removed <= IMAGE_BYTES_TARGET)
-                return item
-              removed += Buffer.byteLength(item.uri)
-              return { type: "text" as const, text: IMAGE_REMOVED }
-            }),
-          },
-        }
-      }),
-    }),
-  )
-}
-
 /**
  * Builds an outbound model request and captures the tool-call capability that
  * must remain paired with it. It does not execute the request or mutate
@@ -213,32 +156,12 @@ export const layer = Layer.effect(
         http: {
           headers: SessionModelHeaders.make(session, app),
         },
-        providerOptions: { [providerMetadataKey]: { promptCacheKey } },
+        providerOptions: { openai: { promptCacheKey } },
         system: contextEvent.system,
-        messages: boundImages(unsupportedParts(contextEvent.messages, resolved.capabilities)),
+        messages: unsupportedParts(contextEvent.messages, resolved.capabilities),
         tools: hookedTools,
         toolChoice: stepLimitReached ? "none" : undefined,
       })
-      const options: StreamOptions = {
-        transform: (request) =>
-          hooks
-            .trigger("session", "request", {
-              sessionID: session.id,
-              agent: agent.id,
-              model: resolved.ref,
-              ...request,
-            })
-            .pipe(
-              Effect.tap((event) =>
-                Effect.sync(() => {
-                  request.url = event.url
-                  request.headers = event.headers
-                  request.body = event.body
-                }),
-              ),
-              Effect.asVoid,
-            ),
-      }
       if (promptCacheSnapshots) {
         const current = PromptCacheDiagnostics.snapshot(request)
         const comparison = PromptCacheDiagnostics.compare(promptCacheSnapshots.get(session.id), current)
@@ -267,7 +190,6 @@ export const layer = Layer.effect(
       }
       return {
         request,
-        options,
         executeTool,
         stepLimitReached,
       }

packages/core/src/session/pending.ts

@@ -1,6 +1,6 @@
 export * as SessionPending from "./pending"
 
-import { and, asc, eq, or } from "drizzle-orm"
+import { and, asc, eq, or, sql } from "drizzle-orm"
 import { DateTime, Effect, Schema } from "effect"
 import {
   Compaction,
@@ -38,10 +38,15 @@ const encodeUser = Schema.encodeSync(UserData)
 const decodeSynthetic = Schema.decodeUnknownSync(SyntheticData)
 const encodeSynthetic = Schema.encodeSync(SyntheticData)
 const decodeAdmittedEvent = Schema.decodeUnknownOption(SessionEvent.InputAdmitted.data)
+const decodeWithdrawnEvent = Schema.decodeUnknownOption(SessionEvent.InputWithdrawn.data)
 const admittedEventType = Bus.versionedType(
   SessionEvent.InputAdmitted.type,
   SessionEvent.InputAdmitted.durable.version,
 )
+const withdrawnEventType = Bus.versionedType(
+  SessionEvent.InputWithdrawn.type,
+  SessionEvent.InputWithdrawn.durable.version,
+)
 const inboxLocks = KeyedMutex.makeUnsafe<SessionSchema.ID>()
 
 export class LifecycleConflict extends Schema.TaggedErrorClass<LifecycleConflict>()(
@@ -103,6 +108,38 @@ export const compaction = Effect.fn("SessionPending.compaction")(function* (
   return entry.type === "compaction" ? entry : undefined
 })
 
+const admittedFromHistory = Effect.fn("SessionPending.admittedFromHistory")(function* (
+  db: DatabaseService,
+  sessionID: SessionSchema.ID,
+  id: SessionMessage.ID,
+) {
+  const row = yield* db
+    .select()
+    .from(EventTable)
+    .where(
+      and(
+        eq(EventTable.aggregate_id, sessionID),
+        eq(EventTable.type, admittedEventType),
+        sql`json_extract(${EventTable.data}, '$.inputID') = ${id}`,
+      ),
+    )
+    .limit(1)
+    .get()
+    .pipe(Effect.orDie)
+  if (row) {
+    const decoded = decodeAdmittedEvent(row.data)
+    if (decoded._tag !== "Some" || decoded.value.inputID !== id)
+      return yield* Effect.die(new LifecycleConflict({ id }))
+    const base = { id, sessionID, timeCreated: DateTime.makeUnsafe(row.created) }
+    return decoded.value.input.type === "user"
+      ? User.make({ ...base, ...decoded.value.input })
+      : Synthetic.make({ ...base, ...decoded.value.input })
+  }
+  // A projected message without an admitted event in this aggregate (for
+  // example fork-copied history) is not a retryable admission.
+  return yield* Effect.die(new LifecycleConflict({ id }))
+})
+
 /**
  * Reconstruct the admitted record for a pending row that was already consumed
  * by promotion. The projected `session_message` row proves promotion happened;
@@ -123,27 +160,30 @@ const promotedFromHistory = Effect.fn("SessionPending.promotedFromHistory")(func
   if (message === undefined) return undefined
   if (message.session_id !== sessionID || (message.type !== "user" && message.type !== "synthetic"))
     return yield* Effect.die(new LifecycleConflict({ id }))
-  const rows = yield* db
-    .select()
+  return yield* admittedFromHistory(db, sessionID, id)
+})
+
+const wasWithdrawn = Effect.fn("SessionPending.wasWithdrawn")(function* (
+  db: DatabaseService,
+  sessionID: SessionSchema.ID,
+  id: SessionMessage.ID,
+) {
+  const row = yield* db
+    .select({ data: EventTable.data })
     .from(EventTable)
-    .where(and(eq(EventTable.aggregate_id, sessionID), eq(EventTable.type, admittedEventType)))
-    .all()
+    .where(
+      and(
+        eq(EventTable.aggregate_id, sessionID),
+        eq(EventTable.type, withdrawnEventType),
+        sql`json_extract(${EventTable.data}, '$.inputID') = ${id}`,
+      ),
+    )
+    .limit(1)
+    .get()
     .pipe(Effect.orDie)
-  for (const row of rows) {
-    const decoded = decodeAdmittedEvent(row.data)
-    if (decoded._tag !== "Some" || decoded.value.inputID !== id) continue
-    const base = {
-      id,
-      sessionID,
-      timeCreated: DateTime.makeUnsafe(row.created),
-    }
-    return decoded.value.input.type === "user"
-      ? User.make({ ...base, ...decoded.value.input })
-      : Synthetic.make({ ...base, ...decoded.value.input })
-  }
-  // A projected message without an admitted event in this aggregate (for
-  // example fork-copied history) is not a retryable admission.
-  return yield* Effect.die(new LifecycleConflict({ id }))
+  if (!row) return false
+  const decoded = decodeWithdrawnEvent(row.data)
+  return decoded._tag === "Some" && decoded.value.inputID === id
 })
 
 export const admit = Effect.fn("SessionPending.admit")(function* (
@@ -162,6 +202,8 @@ export const admit = Effect.fn("SessionPending.admit")(function* (
   }
   const promoted = yield* promotedFromHistory(db, request.sessionID, request.id)
   if (promoted !== undefined) return promoted
+  if (yield* wasWithdrawn(db, request.sessionID, request.id))
+    return yield* admittedFromHistory(db, request.sessionID, request.id)
   return yield* bus
     .publish(SessionEvent.InputAdmitted, {
       inputID: request.id,
@@ -309,14 +351,13 @@ export const projectCompactionAdmitted = Effect.fn("SessionPending.projectCompac
  * message insert inside the same event transaction; the deleted row is what
  * makes the table pending-only.
  */
-export const projectPromoted = Effect.fn("SessionPending.projectPromoted")(function* (
+const consumeInput = Effect.fn("SessionPending.consumeInput")(function* (
   db: DatabaseService,
   input: {
     readonly id: SessionMessage.ID
     readonly sessionID: SessionSchema.ID
   },
 ) {
-  if (yield* compaction(db, input.sessionID)) return yield* Effect.die(new LifecycleConflict({ id: input.id }))
   const deleted = yield* db
     .delete(SessionPendingTable)
     .where(and(eq(SessionPendingTable.id, input.id), eq(SessionPendingTable.session_id, input.sessionID)))
@@ -329,6 +370,27 @@ export const projectPromoted = Effect.fn("SessionPending.projectPromoted")(funct
   return stored
 })
 
+export const projectPromoted = Effect.fn("SessionPending.projectPromoted")(function* (
+  db: DatabaseService,
+  input: {
+    readonly id: SessionMessage.ID
+    readonly sessionID: SessionSchema.ID
+  },
+) {
+  if (yield* compaction(db, input.sessionID)) return yield* Effect.die(new LifecycleConflict({ id: input.id }))
+  return yield* consumeInput(db, input)
+})
+
+export const projectWithdrawn = Effect.fn("SessionPending.projectWithdrawn")(function* (
+  db: DatabaseService,
+  input: {
+    readonly id: SessionMessage.ID
+    readonly sessionID: SessionSchema.ID
+  },
+) {
+  return yield* consumeInput(db, input)
+})
+
 export const settleCompaction = Effect.fn("SessionPending.settleCompaction")(function* (
   db: DatabaseService,
   input: { readonly sessionID: SessionSchema.ID },
@@ -406,6 +468,30 @@ export const equivalent = (
   return false
 }
 
+export const withdraw = Effect.fn("SessionPending.withdraw")(function* (
+  db: DatabaseService,
+  bus: Bus.Interface,
+  input: { readonly sessionID: SessionSchema.ID; readonly inputID: SessionMessage.ID },
+) {
+  return yield* inboxLocks.withLock(input.sessionID)(
+    Effect.gen(function* () {
+      const pending = yield* find(db, input.inputID)
+      if (!pending) return yield* wasWithdrawn(db, input.sessionID, input.inputID)
+      if (pending.sessionID !== input.sessionID || pending.type === "compaction") return false
+      yield* bus
+        .publish(SessionEvent.InputWithdrawn, input)
+        .pipe(
+          Effect.catchDefect((defect) =>
+            wasWithdrawn(db, input.sessionID, input.inputID).pipe(
+              Effect.flatMap((withdrawn) => (withdrawn ? Effect.void : Effect.die(defect))),
+            ),
+          ),
+        )
+      return true
+    }),
+  )
+})
+
 const publish = Effect.fn("SessionPending.publish")(function* (
   db: DatabaseService,
   bus: Bus.Interface,

packages/core/src/session/projector.ts

@@ -43,8 +43,7 @@ type Usage = {
 
 const ForkBatchSize = 500
 
-const forkTitle = (value?: string) => {
-  if (value === undefined) return
+const forkTitle = (value: string) => {
   const match = value.match(/^(.+) \(fork #(\d+)\)$/)
   if (match) return `${match[1]} (fork #${Number.parseInt(match[2], 10) + 1})`
   return `${value} (fork #1)`
@@ -217,7 +216,7 @@ const projectFork = Effect.fn("SessionProjector.projectFork")(function* (
       slug: Slug.create(),
       directory: parent.directory,
       path: parent.path,
-      title: forkTitle(parent.title ?? undefined),
+      title: forkTitle(parent.title),
       agent: parent.agent,
       model: parent.model,
       version: parent.version,
@@ -666,6 +665,12 @@ const layer = Layer.effectDiscard(
           .pipe(Effect.orDie)
       }),
     )
+    yield* bus.project(SessionEvent.InputWithdrawn, (event) =>
+      SessionPending.projectWithdrawn(db, {
+        id: event.data.inputID,
+        sessionID: event.data.sessionID,
+      }),
+    )
     yield* bus.project(SessionEvent.Compaction.Admitted, (event) =>
       Effect.gen(function* () {
         if (event.durable === undefined)

packages/core/src/session/runner/llm.ts

@@ -93,9 +93,10 @@ const layer = Layer.effect(
     const db = (yield* Database.Service).db
     const compaction = yield* SessionCompaction.Service
     const title = yield* SessionTitle.Service
-    // Title generation is a side effect of a successful step; it must not delay continuation.
-    // The in-flight set coalesces overlapping steps while title presence records success durably.
-    const titlesRunning = new Set<SessionSchema.ID>()
+    // Title generation is a side effect of the first step; it must not delay step continuation.
+    // Tracked per process so repeated wakes before the second user message arrives don't
+    // re-fire a redundant LLM call; `SessionTitle` itself is idempotent based on durable history.
+    const titleStarted = new Set<SessionSchema.ID>()
     const forkTitle = yield* FiberSet.makeRuntime<never, void, never>()
     /**
      * Drains eligible manual compaction and user input until the Session becomes idle.
@@ -124,7 +125,7 @@ const layer = Layer.effect(
       let step = 1
       while (true) {
         const result = yield* runStep(sessionID, promotable, step)
-        if (step === 1) yield* startTitle(sessionID)
+        yield* startTitleOnce(sessionID)
         yield* runPendingCompaction(sessionID)
         if (!result.needsContinuation && !(yield* SessionPending.has(db, sessionID, "steer"))) return
         promotable = "steer"
@@ -278,7 +279,7 @@ const layer = Layer.effect(
       // event durably, fork one fiber per local tool call, and hold back a virgin
       // context-overflow provider error so settlement may recover it via compaction.
       let overflowFailure: ProviderErrorEvent | undefined
-      const providerStream = llm.stream(prepared.request, prepared.options).pipe(
+      const providerStream = llm.stream(prepared.request).pipe(
         Stream.runForEach((event) =>
           Effect.gen(function* () {
             if (overflowFailure || publisher.hasProviderError()) return
@@ -480,20 +481,11 @@ const layer = Layer.effect(
       }
     })
 
-    /** Starts one title request at a time after a successful step makes user input visible. */
-    const startTitle = Effect.fnUntraced(function* (sessionID: SessionSchema.ID) {
-      if (titlesRunning.has(sessionID)) return
-      titlesRunning.add(sessionID)
-      forkTitle(
-        title.generateForFirstPrompt(sessionID).pipe(
-          Effect.ignore,
-          Effect.ensuring(
-            Effect.sync(() => {
-              titlesRunning.delete(sessionID)
-            }),
-          ),
-        ),
-      )
+    /** Fires title generation once per process after the first step makes a user message visible. */
+    const startTitleOnce = Effect.fnUntraced(function* (sessionID: SessionSchema.ID) {
+      if (titleStarted.has(sessionID)) return
+      titleStarted.add(sessionID)
+      forkTitle(title.generateForFirstPrompt(yield* getSession(sessionID)).pipe(Effect.ignore))
     })
 
     const getSession = Effect.fn("SessionRunner.getSession")(function* (sessionID: SessionSchema.ID) {

packages/core/src/session/sql.ts

@@ -36,7 +36,7 @@ export const SessionTable = sqliteTable(
     slug: text().notNull(),
     directory: directoryColumn().notNull(),
     path: pathColumn(),
-    title: text(),
+    title: text().notNull(),
     version: text().notNull(),
     share_url: text(),
     summary_additions: integer(),

packages/core/src/session/title.ts

@@ -1,12 +1,11 @@
 export * as SessionTitle from "./title"
 
 import { LLM, LLMClient, LLMError, LLMEvent, Message, type LLMRequest } from "@opencode-ai/ai"
-import { Context, DateTime, Effect, Layer, Stream } from "effect"
+import { Context, Effect, Layer, Stream } from "effect"
 import { Agent } from "../agent"
 import { Database } from "../database/database"
 import { Bus } from "../bus"
 import { makeLocationNode } from "@opencode-ai/util/effect/app-node"
-import { isExactRootFallback } from "@opencode-ai/util/session-title-fallback"
 import { App } from "../app"
 import { llmClient } from "../effect/app-node-platform"
 import { SessionEvent } from "./event"
@@ -15,10 +14,8 @@ import { SessionModelHeaders } from "./model-headers"
 import { SessionRunnerModel } from "./runner/model"
 import { SessionSchema } from "./schema"
 import { SessionUsage } from "./usage"
-import { SessionStore } from "./store"
 
 const MAX_LENGTH = 100
-const titleChanged = Symbol("Session title changed")
 
 type Dependencies = {
   readonly app: App.Info
@@ -28,33 +25,24 @@ type Dependencies = {
   }
   readonly agents: Agent.Interface
   readonly models: SessionRunnerModel.Interface
-  readonly store: SessionStore.Interface
 }
 
 export interface Interface {
-  /** Generates a title from the session's first user message when the session remains untitled. */
-  readonly generateForFirstPrompt: (sessionID: SessionSchema.ID) => Effect.Effect<void>
+  /** Generates a title from the session's first user message and renames the session. Runs at most once per session. */
+  readonly generateForFirstPrompt: (session: SessionSchema.Info) => Effect.Effect<void>
 }
 
 export class Service extends Context.Service<Service, Interface>()("@opencode/SessionTitle") {}
 
 const truncate = (value: string) => (value.length <= MAX_LENGTH ? value : `${value.slice(0, MAX_LENGTH - 3)}...`)
-const isUntitled = (session: SessionSchema.Info) =>
-  isExactRootFallback({
-    title: session.title,
-    time: { created: DateTime.toEpochMillis(session.time.created) },
-  })
 
 const make = (dependencies: Dependencies) => {
   const generateForFirstPrompt = Effect.fn("SessionTitle.generateForFirstPrompt")(function* (
     db: Database.Interface["db"],
-    sessionID: SessionSchema.ID,
+    session: SessionSchema.Info,
   ) {
-    const session = yield* dependencies.store.get(sessionID)
-    if (!session) return
     if (session.parentID) return
-    if (!isUntitled(session)) return
-    const firstUser = yield* SessionHistory.firstUserMessage(db, session.id)
+    const firstUser = yield* SessionHistory.firstUserMessageIfOnly(db, session.id)
     if (!firstUser) return
     const agent = yield* dependencies.agents.get(Agent.ID.make("title"))
     if (!agent) return
@@ -108,19 +96,10 @@ const make = (dependencies: Dependencies) => {
       .map((line) => line.trim())
       .find((line) => line.length > 0)
     if (!title) return
-    const expectedSequence = (yield* Bus.latestSequence(db, sessionID)) + 1
-    const current = yield* dependencies.store.get(sessionID)
-    if (!current || !isUntitled(current)) return
-    yield* dependencies.bus
-      .publish(
-        SessionEvent.Renamed,
-        {
-          sessionID: session.id,
-          title: truncate(title),
-        },
-        { commit: (sequence) => (sequence === expectedSequence ? Effect.void : Effect.die(titleChanged)) },
-      )
-      .pipe(Effect.catchDefect((defect) => (defect === titleChanged ? Effect.void : Effect.die(defect))))
+    yield* dependencies.bus.publish(SessionEvent.Renamed, {
+      sessionID: session.id,
+      title: truncate(title),
+    })
   })
   return { generateForFirstPrompt }
 }
@@ -132,12 +111,11 @@ export const layer = Layer.effect(
     const llm = yield* LLMClient.Service
     const agents = yield* Agent.Service
     const models = yield* SessionRunnerModel.Service
-    const store = yield* SessionStore.Service
     const database = yield* Database.Service
     const app = yield* App.Metadata
-    const title = make({ bus, llm, agents, models, store, app })
+    const title = make({ bus, llm, agents, models, app })
     return Service.of({
-      generateForFirstPrompt: (sessionID) => title.generateForFirstPrompt(database.db, sessionID),
+      generateForFirstPrompt: (session) => title.generateForFirstPrompt(database.db, session),
     })
   }),
 )
@@ -145,5 +123,5 @@ export const layer = Layer.effect(
 export const node = makeLocationNode({
   service: Service,
   layer,
-  deps: [Bus.node, llmClient, Agent.node, SessionRunnerModel.node, SessionStore.node, Database.node, App.node],
+  deps: [Bus.node, llmClient, Agent.node, SessionRunnerModel.node, Database.node, App.node],
 })

packages/core/src/v1/config/migrate.ts

@@ -63,7 +63,7 @@ export function migrate(info: typeof ConfigV1.Info.Type) {
     watcher: info.watcher,
     formatter: info.formatter,
     lsp: info.lsp,
-    media: info.attachment,
+    attachments: info.attachment,
     tool_output: info.tool_output,
     mcp: mcp(info),
     compaction: info.compaction && {

packages/core/test/aisdk-native.test.ts

@@ -1,142 +0,0 @@
-import { describe, expect, test } from "bun:test"
-import { AISDKNative } from "@opencode-ai/core/aisdk-native"
-
-describe("AISDKNative", () => {
-  test("maps OpenRouter settings to native destinations", () => {
-    expect(
-      AISDKNative.map("@openrouter/ai-sdk-provider", {
-        appName: "OpenCode",
-        appUrl: "https://opencode.ai",
-        headers: { "x-openrouter-title": "Configured", "x-provider-api-keys": "Configured BYOK" },
-        api_keys: { anthropic: "provider-key" },
-        extraBody: { transforms: ["middle-out"] },
-        models: ["anthropic/claude-sonnet-4.6"],
-        provider: { only: ["anthropic"], require_parameters: true },
-        reasoning: { effort: "high" },
-        promptCacheKey: "session_123",
-        future_option: { enabled: true },
-      }),
-    ).toEqual({
-      package: "@opencode-ai/ai/providers/openrouter",
-      settings: {
-        providerOptions: {
-          openrouter: {
-            models: ["anthropic/claude-sonnet-4.6"],
-            provider: { only: ["anthropic"], require_parameters: true },
-            reasoning: { effort: "high" },
-            promptCacheKey: "session_123",
-            future_option: { enabled: true },
-          },
-        },
-      },
-      headers: {
-        "x-openrouter-title": "Configured",
-        "HTTP-Referer": "https://opencode.ai",
-        "x-provider-api-keys": "Configured BYOK",
-      },
-      body: { transforms: ["middle-out"] },
-    })
-  })
-
-  test("maps every Google thinking setting", () => {
-    expect(
-      AISDKNative.map("@ai-sdk/google", {
-        cachedContent: "cachedContents/example",
-        safetySettings: [{ category: "HARM_CATEGORY_HARASSMENT", threshold: "BLOCK_NONE" }],
-        serviceTier: "flex",
-        thinkingConfig: {
-          thinkingBudget: 0,
-          includeThoughts: false,
-          thinkingLevel: "high",
-          unknown: true,
-        },
-      }),
-    ).toEqual({
-      package: "@opencode-ai/ai/providers/google",
-      settings: {
-        providerOptions: {
-          gemini: {
-            cachedContent: "cachedContents/example",
-            safetySettings: [{ category: "HARM_CATEGORY_HARASSMENT", threshold: "BLOCK_NONE" }],
-            serviceTier: "flex",
-            thinkingConfig: {
-              thinkingBudget: 0,
-              includeThoughts: false,
-              thinkingLevel: "high",
-            },
-          },
-        },
-      },
-    })
-  })
-
-  test("maps Google thinking settings independently", () => {
-    for (const thinkingConfig of [{ thinkingBudget: -1 }, { includeThoughts: true }, { thinkingLevel: "medium" }]) {
-      expect(AISDKNative.map("@ai-sdk/google", { thinkingConfig })).toMatchObject({
-        settings: { providerOptions: { gemini: { thinkingConfig } } },
-      })
-    }
-  })
-
-  test("maps Google request options without thinking settings", () => {
-    expect(
-      AISDKNative.map("@ai-sdk/google", {
-        cachedContent: "cachedContents/example",
-        safetySettings: [{ category: "HARM_CATEGORY_HARASSMENT", threshold: "BLOCK_NONE" }],
-        serviceTier: "future-tier",
-      }),
-    ).toMatchObject({
-      settings: {
-        providerOptions: {
-          gemini: {
-            cachedContent: "cachedContents/example",
-            safetySettings: [{ category: "HARM_CATEGORY_HARASSMENT", threshold: "BLOCK_NONE" }],
-            serviceTier: "future-tier",
-          },
-        },
-      },
-    })
-  })
-
-  test("maps supported xAI settings", () => {
-    expect(
-      AISDKNative.map("@ai-sdk/xai", {
-        apiKey: "secret",
-        baseURL: "https://xai.example/v1",
-        reasoningEffort: "custom",
-        store: true,
-        promptCacheKey: "cache-key",
-      }),
-    ).toEqual({
-      package: "@opencode-ai/ai/providers/xai",
-      settings: {
-        apiKey: "secret",
-        baseURL: "https://xai.example/v1",
-        providerOptions: {
-          xai: {
-            reasoningEffort: "custom",
-            store: true,
-            promptCacheKey: "cache-key",
-          },
-        },
-      },
-    })
-  })
-
-  test("omits invalid and unsupported xAI settings", () => {
-    expect(
-      AISDKNative.map("@ai-sdk/xai", {
-        reasoningEffort: 10,
-        store: "yes",
-        include: ["unknown"],
-        logprobs: true,
-        topLogprobs: 8,
-        previousResponseId: "response-id",
-        searchParameters: { mode: "auto" },
-      }),
-    ).toEqual({
-      package: "@opencode-ai/ai/providers/xai",
-      settings: {},
-    })
-  })
-})

packages/core/test/config/config.test.ts

@@ -803,7 +803,7 @@ describe("Config", () => {
                   custom: { command: ["custom-fmt", "$FILE"], extensions: [".foo"] },
                 },
                 lsp: { typescript: { disabled: true }, custom: { command: ["custom-lsp"], extensions: [".foo"] } },
-                media: {
+                attachments: {
                   image: { auto_resize: false, max_width: 1200, max_height: 900, max_base64_bytes: 1048576 },
                 },
                 tool_output: { max_lines: 1000, max_bytes: 32768 },
@@ -890,7 +890,7 @@ describe("Config", () => {
               typescript: { disabled: true },
               custom: { command: ["custom-lsp"], extensions: [".foo"] },
             })
-            expect(documents[0]?.info.media).toEqual({
+            expect(documents[0]?.info.attachments).toEqual({
               image: { auto_resize: false, max_width: 1200, max_height: 900, max_base64_bytes: 1048576 },
             })
             expect(documents[0]?.info.tool_output).toEqual({ max_lines: 1000, max_bytes: 32768 })
@@ -1097,7 +1097,7 @@ describe("Config", () => {
             expect(documents[0]?.info.references).toEqual({
               docs: { path: "../docs", description: "Use for product documentation", hidden: true },
             })
-            expect(documents[0]?.info.media).toEqual({ image: { auto_resize: false, max_width: 1200 } })
+            expect(documents[0]?.info.attachments).toEqual({ image: { auto_resize: false, max_width: 1200 } })
             expect(documents[0]?.info.providers?.custom).toMatchObject({
               settings: { apiKey: "secret" },
               models: {

packages/core/test/database-migration.test.ts

@@ -26,7 +26,6 @@ import timeSuspendedMigration from "@opencode-ai/core/database/migration/2026070
 import instructionSyncMigration from "@opencode-ai/core/database/migration/20260710025429_instruction_sync"
 import deleteToolProgressEventsMigration from "@opencode-ai/core/database/migration/20260722011141_delete_tool_progress_events"
 import canonicalToolResultsMigration from "@opencode-ai/core/database/migration/20260722170000_canonical_tool_results"
-import optionalSessionTitleMigration from "@opencode-ai/core/database/migration/20260730195856_optional_session_title"
 import { AppNodeBuilder } from "@opencode-ai/core/effect/app-node-builder"
 import { LayerNode } from "@opencode-ai/util/effect/layer-node"
 import { Bus } from "@opencode-ai/core/bus"
@@ -400,40 +399,6 @@ describe("DatabaseMigration", () => {
     ).rejects.toThrow("Database is not empty and has no session table")
   })
 
-  test("makes session titles nullable without deleting dependent rows", async () => {
-    await run(
-      Effect.gen(function* () {
-        const db = yield* makeDb
-        yield* db.run(sql`PRAGMA foreign_keys = ON`)
-        yield* db.run(sql`
-          CREATE TABLE session (
-            id text PRIMARY KEY,
-            title text NOT NULL
-          )
-        `)
-        yield* db.run(sql`
-          CREATE TABLE message (
-            id text PRIMARY KEY,
-            session_id text NOT NULL REFERENCES session(id) ON DELETE CASCADE
-          )
-        `)
-        yield* db.run(sql`INSERT INTO session VALUES ('ses_existing', 'Existing title')`)
-        yield* db.run(sql`INSERT INTO message VALUES ('msg_existing', 'ses_existing')`)
-
-        yield* DatabaseMigration.applyOnly(db, [optionalSessionTitleMigration])
-
-        expect(yield* db.get(sql`SELECT title FROM session WHERE id = 'ses_existing'`)).toEqual({
-          title: "Existing title",
-        })
-        expect(yield* db.get(sql`SELECT id FROM message WHERE id = 'msg_existing'`)).toEqual({ id: "msg_existing" })
-        expect(
-          yield* db.get<{ notnull: number }>(sql`SELECT "notnull" FROM pragma_table_info('session') WHERE name = 'title'`),
-        ).toEqual({ notnull: 0 })
-        expect(yield* db.get<{ foreign_keys: number }>(sql`PRAGMA foreign_keys`)).toEqual({ foreign_keys: 1 })
-      }),
-    )
-  })
-
   test("backfills existing Context Epoch rows to the build agent", async () => {
     await run(
       Effect.gen(function* () {

packages/core/test/model-resolver.test.ts

@@ -1,6 +1,5 @@
 import { describe, expect } from "bun:test"
 import { LLM, Model } from "@opencode-ai/ai"
-import { OpenAIChat } from "@opencode-ai/ai/protocols"
 import { compileRequest } from "@opencode-ai/ai/route/client"
 import { Effect } from "effect"
 import { Headers } from "effect/unstable/http"
@@ -18,7 +17,6 @@ interface ModelOptions {
   readonly headers?: Info["headers"]
   readonly body?: Info["body"]
   readonly variants?: Info["variants"]
-  readonly limit?: Info["limit"]
 }
 
 const model = (packageName: string | undefined, options: ModelOptions = {}) =>
@@ -38,7 +36,7 @@ const model = (packageName: string | undefined, options: ModelOptions = {}) =>
     cost: [],
     status: "active",
     enabled: true,
-    limit: options.limit ?? { context: 100, output: 20 },
+    limit: { context: 100, output: 20 },
   })
 
 describe("ModelResolver", () => {
@@ -46,7 +44,6 @@ describe("ModelResolver", () => {
     Effect.gen(function* () {
       const catalog = model(Provider.aisdk("@ai-sdk/openai"), {
         settings: { baseURL: "https://openai.example/v1" },
-        limit: { context: 100, input: 80, output: 20 },
       })
       const resolved = yield* ModelResolver.fromCatalogModel(catalog)
 
@@ -58,7 +55,7 @@ describe("ModelResolver", () => {
         endpoint: { baseURL: "https://openai.example/v1" },
         defaults: {
           headers: { "x-test": "header" },
-          limits: { context: 100, input: 80, output: 20 },
+          limits: { context: 100, output: 20 },
           http: { body: { custom_extension: { enabled: true } } },
         },
       })
@@ -310,12 +307,12 @@ describe("ModelResolver", () => {
     }),
   )
 
-  it.effect("applies plugin-projected OpenAI endpoint and headers", () =>
+  it.effect("routes ChatGPT OAuth credentials to the codex backend", () =>
     Effect.gen(function* () {
       const resolved = yield* ModelResolver.fromCatalogModel(
-        model("@opencode-ai/ai/providers/openai", {
-          settings: { baseURL: "https://chatgpt.com/backend-api/codex" },
-          headers: { "chatgpt-account-id": "acct_123" },
+        model(Provider.aisdk("@ai-sdk/openai"), {
+          settings: { baseURL: "https://openai.example/v1" },
+          headers: {},
           body: {},
         }),
         Credential.OAuth.make({
@@ -340,8 +337,37 @@ describe("ModelResolver", () => {
         id: "openai-responses",
         endpoint: { baseURL: "https://chatgpt.com/backend-api/codex" },
       })
-      expect(resolved.route.defaults.headers).toMatchObject({ "chatgpt-account-id": "acct_123" })
       expect(headers.authorization).toBe("Bearer chatgpt-token")
+      expect(headers["chatgpt-account-id"]).toBe("acct_123")
+    }),
+  )
+
+  it.effect("routes native OpenAI provider packages with ChatGPT credentials to the codex backend", () =>
+    Effect.gen(function* () {
+      const resolved = yield* ModelResolver.fromCatalogModel(
+        model("@opencode-ai/ai/providers/openai", {
+          settings: { baseURL: "https://openai.example/v1" },
+        }),
+        Credential.OAuth.make({
+          type: "oauth",
+          methodID: Integration.MethodID.make("chatgpt-browser"),
+          access: "chatgpt-token",
+          refresh: "refresh",
+          expires: Date.now() + 60_000,
+          metadata: { accountID: "acct_123" },
+        }),
+      )
+      const headers = yield* resolved.route.auth.apply({
+        request: LLM.request({ model: resolved, prompt: "Hello" }),
+        method: "POST",
+        url: "https://chatgpt.com/backend-api/codex/responses",
+        body: "{}",
+        headers: Headers.empty,
+      })
+
+      expect(resolved.route.endpoint.baseURL).toBe("https://chatgpt.com/backend-api/codex")
+      expect(headers.authorization).toBe("Bearer chatgpt-token")
+      expect(headers["chatgpt-account-id"]).toBe("acct_123")
     }),
   )
 
@@ -381,6 +407,37 @@ describe("ModelResolver", () => {
     }),
   )
 
+  it.effect("routes ChatGPT OAuth credentials without an account id to the codex backend", () =>
+    Effect.gen(function* () {
+      const resolved = yield* ModelResolver.fromCatalogModel(
+        model(Provider.aisdk("@ai-sdk/openai"), {
+          settings: { baseURL: "https://openai.example/v1" },
+          headers: {},
+          body: {},
+        }),
+        Credential.OAuth.make({
+          type: "oauth",
+          methodID: Integration.MethodID.make("chatgpt-headless"),
+          access: "chatgpt-token",
+          refresh: "refresh",
+          expires: Date.now() + 60_000,
+        }),
+      )
+      const request = LLM.request({ model: resolved, prompt: "Hello" })
+      const headers = yield* resolved.route.auth.apply({
+        request,
+        method: "POST",
+        url: "https://chatgpt.com/backend-api/codex/responses",
+        body: "{}",
+        headers: Headers.empty,
+      })
+
+      expect(resolved.route.endpoint.baseURL).toBe("https://chatgpt.com/backend-api/codex")
+      expect(headers.authorization).toBe("Bearer chatgpt-token")
+      expect(headers["chatgpt-account-id"]).toBeUndefined()
+    }),
+  )
+
   it.effect("keeps non-ChatGPT OAuth credentials on the configured endpoint", () =>
     Effect.gen(function* () {
       const resolved = yield* ModelResolver.fromCatalogModel(
@@ -493,31 +550,16 @@ describe("ModelResolver", () => {
     Effect.gen(function* () {
       const native = yield* ModelResolver.fromCatalogModel(model(Provider.aisdk("@ai-sdk/openai")))
       const packages = [
-        [
-          "@ai-sdk/google",
-          "@opencode-ai/ai/providers/google",
-          { thinkingConfig: { thinkingLevel: "high" } },
-          { gemini: { thinkingConfig: { thinkingLevel: "high" } } },
-        ],
-        [
-          "@openrouter/ai-sdk-provider",
-          "@opencode-ai/ai/providers/openrouter",
-          { reasoning: { effort: "high" } },
-          { openrouter: { reasoning: { effort: "high" } } },
-        ],
-        [
-          "@ai-sdk/xai",
-          "@opencode-ai/ai/providers/xai",
-          { reasoningEffort: "high" },
-          { xai: { reasoningEffort: "high" } },
-        ],
+        ["@ai-sdk/google", "@opencode-ai/ai/providers/google", "gemini"],
+        ["@openrouter/ai-sdk-provider", "@opencode-ai/ai/providers/openrouter", "openrouter"],
+        ["@ai-sdk/xai", "@opencode-ai/ai/providers/xai", "xai"],
       ] as const
 
-      yield* Effect.forEach(packages, ([catalogPackage, nativePackage, sourceOptions, providerOptions]) =>
+      yield* Effect.forEach(packages, ([catalogPackage, nativePackage, optionKey]) =>
         ModelResolver.fromCatalogModel(
           model(Provider.aisdk(catalogPackage), {
             modelID: "api-model",
-            settings: { baseURL: "https://provider.example/v1", ...sourceOptions },
+            settings: { baseURL: "https://provider.example/v1", reasoningEffort: "high" },
             headers: { "x-provider": "header" },
             body: { custom: true },
           }),
@@ -534,7 +576,7 @@ describe("ModelResolver", () => {
                     headers: { "x-provider": "header" },
                     body: { custom: true },
                     limits: { context: 100, output: 20 },
-                    providerOptions,
+                    providerOptions: { [optionKey]: { reasoningEffort: "high" } },
                   })
                   return Model.make({ id: modelID, provider: "native-provider", route: native.route })
                 },
@@ -547,37 +589,6 @@ describe("ModelResolver", () => {
     }),
   )
 
-  it.effect("merges mapped OpenRouter headers and body with catalog overlays", () =>
-    ModelResolver.fromCatalogModel(
-      model(Provider.aisdk("@openrouter/ai-sdk-provider"), {
-        settings: {
-          appName: "OpenCode",
-          appUrl: "https://opencode.ai",
-          extraBody: { transforms: ["middle-out"], provider: { sort: "price" } },
-        },
-        headers: { "X-OpenRouter-Title": "Custom" },
-        body: { provider: { only: ["anthropic"] } },
-      }),
-      undefined,
-      {
-        loadPackage: () =>
-          Effect.succeed({
-            model: (modelID, settings) => {
-              expect(settings.headers).toEqual({
-                "HTTP-Referer": "https://opencode.ai",
-                "X-OpenRouter-Title": "Custom",
-              })
-              expect(settings.body).toEqual({
-                transforms: ["middle-out"],
-                provider: { sort: "price", only: ["anthropic"] },
-              })
-              return Model.make({ id: modelID, provider: "openrouter", route: OpenAIChat.route })
-            },
-          }),
-      },
-    ),
-  )
-
   it.effect("loads supported AISDK catalog packages as native routes", () =>
     Effect.gen(function* () {
       const google = yield* ModelResolver.fromCatalogModel(

packages/core/test/plugin/provider-openai.test.ts

@@ -1,7 +1,7 @@
+import { AISDK } from "@opencode-ai/core/aisdk"
 import { Money } from "@opencode-ai/schema/money"
-import { Agent } from "@opencode-ai/schema/agent"
-import { Session } from "@opencode-ai/schema/session"
 import { describe, expect } from "bun:test"
+import type { LanguageModelV3 } from "@ai-sdk/provider"
 import { Effect } from "effect"
 import { Catalog } from "@opencode-ai/core/catalog"
 import { Credential } from "@opencode-ai/core/credential"
@@ -9,7 +9,6 @@ import { Integration } from "@opencode-ai/core/integration"
 import { Model } from "@opencode-ai/core/model"
 import { Plugin } from "@opencode-ai/core/plugin"
 import { PluginHost } from "@opencode-ai/core/plugin/host"
-import { PluginHooks } from "@opencode-ai/core/plugin/hooks"
 import { OpenAIPlugin } from "@opencode-ai/core/plugin/provider/openai"
 import { Provider } from "@opencode-ai/core/provider"
 import { testEffect } from "../lib/effect"
@@ -19,6 +18,7 @@ const it = testEffect(PluginTestLayer)
 
 const addPlugin = Effect.fn(function* () {
   const plugin = yield* Plugin.Service
+  const aisdk = yield* AISDK.Service
   const host = yield* PluginHost.make(plugin)
   const integrations = yield* Integration.Service
   yield* OpenAIPlugin.effect(host).pipe(Effect.provideService(Integration.Service, integrations))
@@ -29,6 +29,19 @@ function required<T>(value: T | undefined): T {
   return value
 }
 
+function fakeSelectorSdk(calls: string[]) {
+  const make = (method: string) => (id: string) => {
+    calls.push(`${method}:${id}`)
+    return { modelId: id, provider: method, specificationVersion: "v3" } as unknown as LanguageModelV3
+  }
+  return {
+    responses: make("responses"),
+    messages: make("messages"),
+    chat: make("chat"),
+    languageModel: make("languageModel"),
+  }
+}
+
 describe("OpenAIPlugin", () => {
   it.effect("registers browser and headless ChatGPT OAuth methods", () =>
     Effect.gen(function* () {
@@ -48,6 +61,104 @@ describe("OpenAIPlugin", () => {
     }),
   )
 
+  it.effect("creates an OpenAI SDK for @ai-sdk/openai using the provider ID as SDK name", () =>
+    Effect.gen(function* () {
+      const plugin = yield* Plugin.Service
+      const aisdk = yield* AISDK.Service
+      yield* addPlugin()
+      const result = yield* aisdk.runSDK({
+        model: Model.Info.make({
+          ...Model.Info.default(Provider.ID.make("custom-openai"), Model.ID.make("gpt-5")),
+          modelID: Model.ID.make("gpt-5"),
+          package: Provider.aisdk("test-provider"),
+        }),
+        package: "@ai-sdk/openai",
+        options: { name: "custom-openai", apiKey: "test" },
+      })
+      expect(result.sdk?.responses("gpt-5").provider).toBe("custom-openai.responses")
+    }),
+  )
+
+  it.effect("ignores non-OpenAI SDK packages", () =>
+    Effect.gen(function* () {
+      const plugin = yield* Plugin.Service
+      const aisdk = yield* AISDK.Service
+      yield* addPlugin()
+      const result = yield* aisdk.runSDK({
+        model: Model.Info.make({
+          ...Model.Info.default(Provider.ID.openai, Model.ID.make("gpt-5")),
+          modelID: Model.ID.make("gpt-5"),
+          package: Provider.aisdk("test-provider"),
+        }),
+        package: "@ai-sdk/openai-compatible",
+        options: { name: "openai" },
+      })
+      expect(result.sdk).toBeUndefined()
+    }),
+  )
+
+  it.effect("uses the Responses API for language models", () =>
+    Effect.gen(function* () {
+      const plugin = yield* Plugin.Service
+      const aisdk = yield* AISDK.Service
+      const calls: string[] = []
+      yield* addPlugin()
+      const result = yield* aisdk.runLanguage({
+        model: Model.Info.make({
+          ...Model.Info.default(Provider.ID.openai, Model.ID.make("alias")),
+          modelID: Model.ID.make("gpt-5"),
+          package: Provider.aisdk("test-provider"),
+        }),
+        sdk: fakeSelectorSdk(calls),
+        options: {},
+      })
+      expect(calls).toEqual(["responses:gpt-5"])
+      expect(result.language).toBeDefined()
+    }),
+  )
+
+  it.effect("ignores non-OpenAI providers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* Plugin.Service
+      const aisdk = yield* AISDK.Service
+      const calls: string[] = []
+      yield* addPlugin()
+      const result = yield* aisdk.runLanguage({
+        model: Model.Info.make({
+          ...Model.Info.default(Provider.ID.anthropic, Model.ID.make("gpt-5")),
+          modelID: Model.ID.make("gpt-5"),
+          package: Provider.aisdk("test-provider"),
+        }),
+        sdk: fakeSelectorSdk(calls),
+        options: {},
+      })
+      expect(calls).toEqual([])
+      expect(result.language).toBeUndefined()
+    }),
+  )
+
+  it.effect("disables gpt-5-chat-latest during catalog transforms", () =>
+    Effect.gen(function* () {
+      const catalog = yield* Catalog.Service
+      yield* catalog.transform((catalog) => {
+        const item = Provider.Info.make({
+          ...Provider.Info.empty(Provider.ID.openai),
+          package: Provider.aisdk("@ai-sdk/openai"),
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.package = item.package
+        })
+        catalog.model.update(item.id, Model.ID.make("gpt-5"), () => {})
+        catalog.model.update(item.id, Model.ID.make("gpt-5-chat-latest"), () => {})
+      })
+      yield* addPlugin()
+      expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5"))).enabled).toBe(true)
+      expect(
+        required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5-chat-latest"))).enabled,
+      ).toBe(false)
+    }),
+  )
+
   it.effect("filters the OpenAI catalog to codex-eligible models under a ChatGPT connection", () =>
     Effect.gen(function* () {
       const catalog = yield* Catalog.Service
@@ -61,7 +172,6 @@ describe("OpenAIPlugin", () => {
           draft.package = item.package
         })
         catalog.model.update(item.id, Model.ID.make("gpt-5.5"), (model) => {
-          model.limit = { context: 1_050_000, input: 922_000, output: 128_000 }
           model.cost = [
             {
               input: Money.USDPerMillionTokens.make(1),
@@ -74,17 +184,12 @@ describe("OpenAIPlugin", () => {
           ]
         })
         catalog.model.update(item.id, Model.ID.make("gpt-5.5-pro"), () => {})
-        catalog.model.update(item.id, Model.ID.make("gpt-5.4"), (model) => {
-          model.limit = { context: 1_050_000, input: 922_000, output: 64_000 }
-        })
         catalog.model.update(item.id, Model.ID.make("gpt-5.4-pro"), (model) => {
           model.modelID = Model.ID.make("gpt-5.4")
           model.body = { reasoning: { mode: "pro" } }
         })
         catalog.model.update(item.id, Model.ID.make("gpt-5.6"), () => {})
-        catalog.model.update(item.id, Model.ID.make("gpt-5.6-sol"), (model) => {
-          model.limit = { context: 1_050_000, input: 922_000, output: 128_000 }
-        })
+        catalog.model.update(item.id, Model.ID.make("gpt-5.6-sol"), () => {})
         catalog.model.update(item.id, Model.ID.make("gpt-4.1"), () => {})
       })
       yield* credentials.create({
@@ -100,47 +205,8 @@ describe("OpenAIPlugin", () => {
       })
       yield* addPlugin()
 
-      const request = yield* (yield* PluginHooks.Service).trigger("session", "request", {
-        sessionID: Session.ID.make("ses_test"),
-        agent: Agent.ID.make("build"),
-        model: Model.Ref.make({ providerID: Provider.ID.openai, id: Model.ID.make("gpt-5.5") }),
-        url: "https://api.openai.com/v1/responses",
-        method: "POST",
-        headers: {},
-        body: "{}",
-      })
-      const custom = yield* (yield* PluginHooks.Service).trigger("session", "request", {
-        sessionID: Session.ID.make("ses_test"),
-        agent: Agent.ID.make("build"),
-        model: Model.Ref.make({ providerID: Provider.ID.make("custom-openai"), id: Model.ID.make("gpt-5.5") }),
-        url: "https://custom.example/v1/responses",
-        method: "POST",
-        headers: {},
-        body: "{}",
-      })
-      const proxy = yield* (yield* PluginHooks.Service).trigger("session", "request", {
-        sessionID: Session.ID.make("ses_test"),
-        agent: Agent.ID.make("build"),
-        model: Model.Ref.make({ providerID: Provider.ID.openai, id: Model.ID.make("gpt-5.5") }),
-        url: "https://proxy.example/v1/responses?region=us",
-        method: "POST",
-        headers: {},
-        body: "{}",
-      })
-
-      const provider = required(yield* catalog.provider.get(Provider.ID.openai))
-      expect(provider.package).toBe("@opencode-ai/ai/providers/openai")
-      expect(provider.settings).toMatchObject({ baseURL: "https://chatgpt.com/backend-api/codex" })
-      expect(provider.headers).toMatchObject({ "chatgpt-account-id": "acct_123" })
-      expect(request.url).toBe("https://chatgpt.com/backend-api/codex/responses")
-      expect(request.headers).toMatchObject({ originator: "opencode", "session-id": "ses_test" })
-      expect(custom.headers).toEqual({})
-      expect(proxy.url).toBe("https://proxy.example/v1/responses?region=us")
-      expect(proxy.headers).toMatchObject({ originator: "opencode", "session-id": "ses_test" })
       const eligible = required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.5")))
-      expect(eligible.package).toBe("@opencode-ai/ai/providers/openai")
       expect(eligible.cost).toEqual([])
-      expect(eligible.limit).toEqual({ context: 272_000, input: 272_000, output: 128_000 })
       expect(eligible.enabled).toBe(true)
       expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.5-pro"))).enabled).toBe(
         false,
@@ -148,15 +214,10 @@ describe("OpenAIPlugin", () => {
       expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.4-pro"))).enabled).toBe(
         false,
       )
-      expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.4"))).limit).toEqual({
-        context: 272_000,
-        input: 272_000,
-        output: 64_000,
-      })
       expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.6"))).enabled).toBe(false)
-      const gpt56 = required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.6-sol")))
-      expect(gpt56.enabled).toBe(true)
-      expect(gpt56.limit).toEqual({ context: 272_000, input: 272_000, output: 128_000 })
+      expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.6-sol"))).enabled).toBe(
+        true,
+      )
       expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-4.1"))).enabled).toBe(false)
     }),
   )
@@ -173,9 +234,7 @@ describe("OpenAIPlugin", () => {
         catalog.provider.update(item.id, (draft) => {
           draft.package = item.package
         })
-        catalog.model.update(item.id, Model.ID.make("gpt-5.5"), (model) => {
-          model.limit = { context: 1_050_000, input: 922_000, output: 128_000 }
-        })
+        catalog.model.update(item.id, Model.ID.make("gpt-5.5"), () => {})
         catalog.model.update(item.id, Model.ID.make("gpt-4.1"), () => {})
       })
       yield* credentials.create({
@@ -184,23 +243,29 @@ describe("OpenAIPlugin", () => {
       })
       yield* addPlugin()
 
-      const request = yield* (yield* PluginHooks.Service).trigger("session", "request", {
-        sessionID: Session.ID.make("ses_test"),
-        agent: Agent.ID.make("build"),
-        model: Model.Ref.make({ providerID: Provider.ID.openai, id: Model.ID.make("gpt-5.5") }),
-        url: "https://api.openai.com/v1/responses",
-        method: "POST",
-        headers: {},
-        body: "{}",
-      })
-
-      const model = required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.5")))
-      expect(model.package).toBe("@opencode-ai/ai/providers/openai")
-      expect(model.enabled).toBe(true)
-      expect(model.limit).toEqual({ context: 1_050_000, input: 922_000, output: 128_000 })
-      expect(request.headers).toEqual({})
+      expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.5"))).enabled).toBe(true)
       expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-4.1"))).enabled).toBe(true)
     }),
   )
 
+  it.effect("does not disable gpt-5-chat-latest for non-OpenAI providers", () =>
+    Effect.gen(function* () {
+      const catalog = yield* Catalog.Service
+      yield* catalog.transform((catalog) => {
+        const item = Provider.Info.make({
+          ...Provider.Info.empty(Provider.ID.make("custom-openai")),
+          package: Provider.aisdk("test-provider"),
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.package = item.package
+        })
+        catalog.model.update(item.id, Model.ID.make("gpt-5-chat-latest"), () => {})
+      })
+      yield* addPlugin()
+      expect(
+        required(yield* catalog.model.get(Provider.ID.make("custom-openai"), Model.ID.make("gpt-5-chat-latest")))
+          .enabled,
+      ).toBe(true)
+    }),
+  )
 })

packages/core/test/session-compaction.test.ts

@@ -19,11 +19,9 @@ import { Session } from "@opencode-ai/core/session"
 import { Project } from "@opencode-ai/core/project"
 import { ProjectTable } from "@opencode-ai/core/project/sql"
 import { App } from "@opencode-ai/core/app"
-import { Agent } from "@opencode-ai/core/agent"
-import { Location } from "@opencode-ai/core/location"
 import { AbsolutePath } from "@opencode-ai/core/schema"
 import { Money } from "@opencode-ai/schema/money"
-import { DateTime, Effect, Fiber, Layer, Schema, Stream } from "effect"
+import { DateTime, Effect, Fiber, Layer, Stream } from "effect"
 import { asc, eq } from "drizzle-orm"
 import { testEffect } from "./lib/effect"
 
@@ -132,52 +130,6 @@ test("compaction prompt requires the checkpoint headings in order", () => {
   expect(prompt).toContain("Keep every section, even when empty.")
 })
 
-it.effect("auto compaction reserves a buffer below the prompt ceiling", () =>
-  Effect.gen(function* () {
-    const compaction = yield* SessionCompaction.Service
-    const session = Session.Info.make({
-      id: Session.ID.make("ses_input_limit"),
-      projectID: Project.ID.global,
-      cost: Money.USD.zero,
-      tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
-      time: { created: DateTime.makeUnsafe(0), updated: DateTime.makeUnsafe(0) },
-      location: Location.Ref.make({ directory: AbsolutePath.make("/tmp") }),
-    })
-    const input = (tokens: number, limits: { context: number; input?: number; output: number }) => ({
-      session,
-      model: Model.make({
-        id: "test-model",
-        provider: "test-provider",
-        route: OpenAIChat.route.with({ limits }),
-      }),
-      cost: [],
-      messages: [
-        Schema.decodeUnknownSync(SessionMessage.Assistant)({
-          id: SessionMessage.ID.make("msg_assistant"),
-          type: "assistant",
-          agent: Agent.defaultID,
-          model: { id: "test-model", providerID: "test-provider" },
-          content: [],
-          tokens: { input: tokens, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
-          time: { created: 0, completed: 0 },
-        }),
-      ],
-    })
-
-    const inputLimited = { context: 400_000, input: 272_000, output: 128_000 }
-    expect(compaction.required(input(251_999, inputLimited))).toBe(false)
-    expect(compaction.required(input(252_000, inputLimited))).toBe(true)
-
-    const contextLimited = { context: 100_000, output: 10_000 }
-    expect(compaction.required(input(79_999, contextLimited))).toBe(false)
-    expect(compaction.required(input(80_000, contextLimited))).toBe(true)
-
-    const outputLimited = { context: 100_000, output: 30_000 }
-    expect(compaction.required(input(69_999, outputLimited))).toBe(false)
-    expect(compaction.required(input(70_000, outputLimited))).toBe(true)
-  }),
-)
-
 it.effect("manual compaction summarizes short context instead of no-op", () =>
   Effect.gen(function* () {
     requests = []

packages/core/test/session-create.test.ts

@@ -71,27 +71,6 @@ function withTmp<A, E, R>(f: (directory: string) => Effect.Effect<A, E, R>) {
 }
 
 describe("Session.create", () => {
-  it.effect("persists a missing title until one is generated or supplied", () =>
-    Effect.gen(function* () {
-      const session = yield* Session.Service
-      const { db } = yield* Database.Service
-
-      const created = yield* session.create({ location })
-      const row = yield* db.select().from(SessionTable).where(eq(SessionTable.id, created.id)).get().pipe(Effect.orDie)
-      const event = yield* db
-        .select({ data: EventTable.data })
-        .from(EventTable)
-        .where(eq(EventTable.aggregate_id, created.id))
-        .get()
-        .pipe(Effect.orDie)
-
-      expect(created.title).toBeUndefined()
-      expect(row?.title).toBeNull()
-      expect(event?.data).not.toHaveProperty("info.title")
-      expect((yield* session.create({ location, title: "Explicit title" })).title).toBe("Explicit title")
-    }),
-  )
-
   it.effect("creates a fresh projected session when the ID is omitted", () =>
     Effect.gen(function* () {
       const session = yield* Session.Service
@@ -317,23 +296,6 @@ describe("Session.create", () => {
     }),
   )
 
-  it.effect("keeps a fork untitled when its parent is untitled", () =>
-    Effect.gen(function* () {
-      const session = yield* Session.Service
-      const bus = yield* Bus.Service
-      const { db } = yield* Database.Service
-      const parent = yield* session.create({ location })
-      yield* session.prompt({ sessionID: parent.id, text: "First", resume: false })
-      yield* SessionPending.promote(db, bus, parent.id, "steer")
-
-      const forked = yield* session.fork({ sessionID: parent.id, boundary: { type: "through" } })
-      const row = yield* db.select().from(SessionTable).where(eq(SessionTable.id, forked.id)).get().pipe(Effect.orDie)
-
-      expect(forked.title).toBeUndefined()
-      expect(row?.title).toBeNull()
-    }),
-  )
-
   it.effect("rejects forking an empty session", () =>
     Effect.gen(function* () {
       const session = yield* Session.Service

packages/core/test/session-model-request.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect, test } from "bun:test"
 import { Message, ToolResultPart } from "@opencode-ai/ai"
-import { boundImages, unsupportedParts } from "@opencode-ai/core/session/model-request"
+import { unsupportedParts } from "@opencode-ai/core/session/model-request"
 
 const capabilities = (input: string[]) => ({ tools: true, input, output: ["text"] })
 
@@ -62,51 +62,3 @@ describe("SessionModelRequest.unsupportedParts", () => {
     expect(unsupportedParts([message], capabilities(["text", "image"]))[0]?.content).toEqual(message.content)
   })
 })
-
-describe("SessionModelRequest.boundImages", () => {
-  test("preserves images below the trigger", () => {
-    const messages = [Message.user({ type: "media", mediaType: "image/png", data: "aGVsbG8=" })]
-    expect(boundImages(messages)).toBe(messages)
-  })
-
-  test("replaces oldest images until the retained payload reaches the target", () => {
-    const image = "a".repeat(9 * 1024 * 1024)
-    const messages = [
-      Message.user({ type: "media", mediaType: "image/png", data: image, filename: "first.png" }),
-      Message.user({ type: "media", mediaType: "image/png", data: image, filename: "second.png" }),
-      Message.user({ type: "media", mediaType: "image/png", data: image, filename: "third.png" }),
-    ]
-    const result = boundImages(messages)
-
-    expect(result[0]?.content[0]).toMatchObject({ type: "text" })
-    expect(result[1]?.content[0]).toMatchObject({ type: "text" })
-    expect(result[2]?.content[0]).toMatchObject({ type: "media", filename: "third.png" })
-  })
-
-  test("replaces images nested in tool results", () => {
-    const image = "a".repeat(13 * 1024 * 1024)
-    const result = boundImages([
-      Message.tool(
-        ToolResultPart.make({
-          id: "call_1",
-          name: "read",
-          result: {
-            type: "content",
-            value: [
-              { type: "file", uri: `data:image/png;base64,${image}`, mime: "image/png", name: "first.png" },
-              { type: "file", uri: `data:image/png;base64,${image}`, mime: "image/png", name: "second.png" },
-            ],
-          },
-        }),
-      ),
-    ])
-
-    expect(result[0]?.content[0]).toMatchObject({
-      type: "tool-result",
-      result: {
-        type: "content",
-        value: [{ type: "text" }, { type: "file", name: "second.png" }],
-      },
-    })
-  })
-})

packages/core/test/session-prompt.test.ts

@@ -26,8 +26,8 @@ import { SessionPendingTable, SessionMessageTable, SessionTable } from "@opencod
 import { SessionStore } from "@opencode-ai/core/session/store"
 import { LocationServiceMap } from "@opencode-ai/core/location-service-map"
 import type { LocationServices } from "@opencode-ai/core/location-services"
-import { Image } from "@opencode-ai/core/image"
 import { testEffect } from "./lib/effect"
+import { imagePassthrough } from "./lib/image"
 
 const executionCalls: Session.ID[] = []
 const interruptCalls: Session.ID[] = []
@@ -58,10 +58,7 @@ const locations = Layer.effect(
     () =>
       // Attachment admission only needs the location-scoped Image service.
       // oxlint-disable-next-line typescript-eslint/no-unsafe-type-assertion
-      Layer.mock(Image.Service, {
-        normalize: (_resource, content) =>
-          Effect.succeed(content.content.length > 5 * 1024 * 1024 ? { ...content, content: "AA==" } : content),
-      }) as unknown as Layer.Layer<LocationServices>,
+      imagePassthrough as unknown as Layer.Layer<LocationServices>,
   ),
 )
 const it = testEffect(
@@ -389,35 +386,6 @@ describe("Session.prompt", () => {
     }),
   )
 
-  it.effect("normalizes large image content before validating persisted Base64", () =>
-    Effect.gen(function* () {
-      yield* setup
-      const session = yield* Session.Service
-      const pixel = Buffer.from(
-        "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNk+A8AAQUBAScY42YAAAAASUVORK5CYII=",
-        "base64",
-      )
-      const bytes = Buffer.concat([pixel, Buffer.alloc(4_323_030 - pixel.length)])
-      const data = bytes.toString("base64")
-      expect(data).toHaveLength(5_764_040)
-
-      const message = yield* session.prompt({
-        sessionID,
-        text: "Inspect this image",
-        files: [{ uri: `data:image/png;base64,${data}` }],
-        resume: false,
-      })
-
-      expect(message.data.files).toEqual([
-        {
-          data: "AA==",
-          mime: "image/png",
-          source: { type: "inline" },
-        },
-      ])
-    }),
-  )
-
   it.effect("sniffs data URL content instead of trusting its declared MIME", () =>
     Effect.gen(function* () {
       yield* setup
@@ -1028,6 +996,52 @@ describe("Session.pending", () => {
     }),
   )
 
+  it.effect("withdraws an interrupted input before promotion without resurrecting exact retries", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const session = yield* Session.Service
+
+      const admitted = yield* session.prompt({
+        id: SessionMessage.ID.make("msg_withdrawn"),
+        sessionID,
+        text: "Withdraw me",
+        resume: false,
+      })
+
+      yield* session.interrupt(sessionID)
+      expect(yield* session.withdraw({ sessionID, inputID: admitted.id })).toBe(true)
+      expect(yield* session.pending(sessionID)).toEqual([])
+      expect(yield* session.messages({ sessionID })).toEqual([])
+      expect(yield* session.withdraw({ sessionID, inputID: admitted.id })).toBe(true)
+
+      const retried = yield* session.prompt({
+        id: admitted.id,
+        sessionID,
+        text: "Withdraw me",
+        resume: false,
+      })
+      expect(retried.id).toBe(admitted.id)
+      expect(yield* session.pending(sessionID)).toEqual([])
+      expect(yield* eventCount(Bus.versionedType(SessionEvent.InputAdmitted.type, 1))).toBe(1)
+      expect(yield* eventCount(Bus.versionedType(SessionEvent.InputWithdrawn.type, 1))).toBe(1)
+    }),
+  )
+
+  it.effect("leaves promoted input for revert when withdrawal loses the race", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const session = yield* Session.Service
+      const bus = yield* Bus.Service
+      const { db } = yield* Database.Service
+      const admitted = yield* session.prompt({ sessionID, text: "Promote me", resume: false })
+
+      yield* SessionPending.promote(db, bus, sessionID, "steer")
+
+      expect(yield* session.withdraw({ sessionID, inputID: admitted.id })).toBe(false)
+      expect(yield* session.messages({ sessionID })).toMatchObject([{ id: admitted.id, type: "user" }])
+    }),
+  )
+
   it.effect("lists an unhandled compaction barrier until it settles", () =>
     Effect.gen(function* () {
       yield* setup

packages/core/test/session-runner.test.ts

@@ -796,59 +796,6 @@ const verifyPartialFlushOnInterruption = (kind: FragmentKind) =>
   })
 
 describe("SessionRunnerLLM", () => {
-  it.effect("retries title generation from the first prompt after execution and title failures", () =>
-    Effect.gen(function* () {
-      const session = yield* setup
-      const agents = yield* Agent.Service
-      const { db } = yield* Database.Service
-      yield* db.update(SessionTable).set({ title: null }).where(eq(SessionTable.id, sessionID)).run().pipe(Effect.orDie)
-      yield* agents.transform((draft) =>
-        draft.update(Agent.ID.make("title"), (agent) => {
-          agent.mode = "primary"
-          agent.hidden = true
-          agent.system = "Generate a title."
-        }),
-      )
-
-      yield* admit(session, "First prompt")
-      yield* TestLLM.push(Stream.fail(invalidRequest()))
-      expect((yield* session.resume(sessionID).pipe(Effect.exit))._tag).toBe("Failure")
-
-      yield* admit(session, "Second prompt")
-      const titleFailed = yield* Deferred.make<void>()
-      yield* TestLLM.push(
-        TestLLM.text("Recovered", "text-recovered"),
-        Stream.make(LLMEvent.providerError({ message: "Title provider unavailable" })).pipe(
-          Stream.ensuring(Deferred.succeed(titleFailed, undefined)),
-        ),
-      )
-      yield* session.resume(sessionID)
-      yield* Deferred.await(titleFailed)
-      yield* Effect.yieldNow
-      expect((yield* session.get(sessionID)).title).toBeUndefined()
-
-      const bus = yield* Bus.Service
-      const renamed = yield* bus.subscribe(SessionEvent.Renamed).pipe(
-        Stream.filter((event) => event.data.sessionID === sessionID),
-        Stream.take(1),
-        Stream.runCollect,
-        Effect.forkScoped({ startImmediately: true }),
-      )
-      yield* admit(session, "Third prompt")
-      yield* TestLLM.push(
-        TestLLM.text("Recovered again", "text-recovered-again"),
-        TestLLM.text("Generated title", "text-title"),
-      )
-      yield* session.resume(sessionID)
-      yield* Fiber.join(renamed)
-
-      expect(requests).toHaveLength(5)
-      expect(requests[2]?.messages).toContainEqual(Message.user("First prompt"))
-      expect(requests[4]?.messages).toContainEqual(Message.user("First prompt"))
-      expect((yield* session.get(sessionID)).title).toBe("Generated title")
-    }),
-  )
-
   it.effect("applies session context hooks without exposing unavailable tools", () =>
     Effect.gen(function* () {
       const session = yield* setup

packages/core/test/session-title.test.ts

@@ -20,7 +20,7 @@ import { ProjectTable } from "@opencode-ai/core/project/sql"
 import { App } from "@opencode-ai/core/app"
 import { AbsolutePath } from "@opencode-ai/core/schema"
 import { Money } from "@opencode-ai/schema/money"
-import { Deferred, Effect, Fiber, Layer, Stream } from "effect"
+import { Effect, Layer, Stream } from "effect"
 import { testEffect } from "./lib/effect"
 
 let requests: LLMRequest[] = []
@@ -39,30 +39,27 @@ const cost = [
     },
   },
 ]
-const successfulTitle = () =>
-  Stream.make(
-    LLMEvent.textDelta({ id: "title", text: "Generated Title\n" }),
-    LLMEvent.stepFinish({
-      index: 0,
-      reason: { normalized: "stop" },
-      usage: {
-        inputTokens: 15,
-        outputTokens: 6,
-        nonCachedInputTokens: 10,
-        cacheReadInputTokens: 3,
-        cacheWriteInputTokens: 2,
-        reasoningTokens: 2,
-      },
-    }),
-    LLMEvent.finish({
-      reason: { normalized: "stop" },
-    }),
-  )
-let titleStream: () => Stream.Stream<LLMEvent> = successfulTitle
 const client = Layer.mock(LLMClient.Service)({
   stream: (request: LLMRequest) => {
     requests.push(request)
-    return titleStream()
+    return Stream.make(
+      LLMEvent.textDelta({ id: "title", text: "Generated Title\n" }),
+      LLMEvent.stepFinish({
+        index: 0,
+        reason: { normalized: "stop" },
+        usage: {
+          inputTokens: 15,
+          outputTokens: 6,
+          nonCachedInputTokens: 10,
+          cacheReadInputTokens: 3,
+          cacheWriteInputTokens: 2,
+          reasoningTokens: 2,
+        },
+      }),
+      LLMEvent.finish({
+        reason: { normalized: "stop" },
+      }),
+    )
   },
   generate: () => Effect.die("unused"),
 })
@@ -92,7 +89,7 @@ const it = testEffect(
   ),
 )
 
-const insertSession = (id: Session.ID, title?: string, created?: number) =>
+const insertSession = (id: Session.ID) =>
   Effect.gen(function* () {
     const { db } = yield* Database.Service
     yield* db
@@ -108,8 +105,7 @@ const insertSession = (id: Session.ID, title?: string, created?: number) =>
         project_id: Project.ID.global,
         slug: id,
         directory: "/project",
-        title,
-        time_created: created,
+        title: "New session - fake",
         version: "test",
       })
       .onConflictDoNothing()
@@ -135,7 +131,6 @@ const prompt = (sessionID: Session.ID, text: string) =>
 it.effect("generates a title from the sole user message and renames the session", () =>
   Effect.gen(function* () {
     requests = []
-    titleStream = successfulTitle
     const agentService = yield* Agent.Service
     yield* agentService.transform((editor) => {
       editor.update(Agent.ID.make("title"), (agent) => {
@@ -149,8 +144,11 @@ it.effect("generates a title from the sole user message and renames the session"
     yield* prompt(sessionID, "Help me debug the failing build")
 
     const store = yield* SessionStore.Service
+    const session = yield* store
+      .get(sessionID)
+      .pipe(Effect.flatMap((session) => (session ? Effect.succeed(session) : Effect.die("session missing"))))
     const title = yield* SessionTitle.Service
-    yield* title.generateForFirstPrompt(sessionID)
+    yield* title.generateForFirstPrompt(session)
 
     expect(requests).toHaveLength(1)
     expect(requests[0]?.http?.headers).toEqual({
@@ -169,10 +167,9 @@ it.effect("generates a title from the sole user message and renames the session"
   }),
 )
 
-it.effect("generates from the first user message after later messages exist", () =>
+it.effect("does not generate once a second user message exists", () =>
   Effect.gen(function* () {
     requests = []
-    titleStream = successfulTitle
     const agentService = yield* Agent.Service
     yield* agentService.transform((editor) => {
       editor.update(Agent.ID.make("title"), (agent) => {
@@ -187,46 +184,21 @@ it.effect("generates from the first user message after later messages exist", ()
     yield* prompt(sessionID, "Second message")
 
     const store = yield* SessionStore.Service
+    const session = yield* store
+      .get(sessionID)
+      .pipe(Effect.flatMap((session) => (session ? Effect.succeed(session) : Effect.die("session missing"))))
     const title = yield* SessionTitle.Service
-    yield* title.generateForFirstPrompt(sessionID)
+    yield* title.generateForFirstPrompt(session)
 
-    expect(requests).toHaveLength(1)
-    expect(JSON.stringify(requests[0]?.messages)).toContain("First message")
-    expect(JSON.stringify(requests[0]?.messages)).not.toContain("Second message")
-    expect((yield* store.get(sessionID))?.title).toBe("Generated Title")
-  }),
-)
-
-it.effect("retries a legacy persisted fallback title", () =>
-  Effect.gen(function* () {
-    requests = []
-    titleStream = successfulTitle
-    const agentService = yield* Agent.Service
-    yield* agentService.transform((editor) => {
-      editor.update(Agent.ID.make("title"), (agent) => {
-        agent.mode = "primary"
-        agent.hidden = true
-        agent.system = "You are a title generator."
-      })
-    })
-    const sessionID = Session.ID.make("ses_title_legacy")
-    const created = Date.parse("2026-07-30T18:45:03.662Z")
-    yield* insertSession(sessionID, "New session - 2026-07-30T18:45:03.662Z", created)
-    yield* prompt(sessionID, "Retry the legacy title")
-
-    const title = yield* SessionTitle.Service
-    yield* title.generateForFirstPrompt(sessionID)
-
-    const store = yield* SessionStore.Service
-    expect(requests).toHaveLength(1)
-    expect((yield* store.get(sessionID))?.title).toBe("Generated Title")
+    expect(requests).toHaveLength(0)
+    const untouched = yield* store.get(sessionID)
+    expect(untouched?.title).toBe("New session - fake")
   }),
 )
 
 it.effect("does not generate for a child session", () =>
   Effect.gen(function* () {
     requests = []
-    titleStream = successfulTitle
     const agentService = yield* Agent.Service
     yield* agentService.transform((editor) => {
       editor.update(Agent.ID.make("title"), (agent) => {
@@ -251,6 +223,7 @@ it.effect("does not generate for a child session", () =>
         parent_id: Session.ID.make("ses_title_parent"),
         slug: sessionID,
         directory: "/project",
+        title: "Child session - fake",
         version: "test",
       })
       .onConflictDoNothing()
@@ -258,8 +231,12 @@ it.effect("does not generate for a child session", () =>
       .pipe(Effect.orDie)
     yield* prompt(sessionID, "Do this subtask")
 
+    const store = yield* SessionStore.Service
+    const session = yield* store
+      .get(sessionID)
+      .pipe(Effect.flatMap((session) => (session ? Effect.succeed(session) : Effect.die("session missing"))))
     const title = yield* SessionTitle.Service
-    yield* title.generateForFirstPrompt(sessionID)
+    yield* title.generateForFirstPrompt(session)
 
     expect(requests).toHaveLength(0)
   }),
@@ -268,100 +245,19 @@ it.effect("does not generate for a child session", () =>
 it.effect("does not generate when the title agent is removed", () =>
   Effect.gen(function* () {
     requests = []
-    titleStream = successfulTitle
     const sessionID = Session.ID.make("ses_title_no_agent")
     yield* insertSession(sessionID)
     yield* prompt(sessionID, "Help me debug the failing build")
 
     const store = yield* SessionStore.Service
+    const session = yield* store
+      .get(sessionID)
+      .pipe(Effect.flatMap((session) => (session ? Effect.succeed(session) : Effect.die("session missing"))))
     const title = yield* SessionTitle.Service
-    yield* title.generateForFirstPrompt(sessionID)
+    yield* title.generateForFirstPrompt(session)
 
     expect(requests).toHaveLength(0)
     const untouched = yield* store.get(sessionID)
-    expect(untouched?.title).toBeUndefined()
-  }),
-)
-
-it.effect("does not overwrite an explicit title", () =>
-  Effect.gen(function* () {
-    requests = []
-    titleStream = successfulTitle
-    const sessionID = Session.ID.make("ses_title_explicit")
-    yield* insertSession(sessionID)
-    yield* prompt(sessionID, "Help me debug the failing build")
-    const events = yield* Bus.Service
-    yield* events.publish(SessionEvent.Renamed, { sessionID, title: "New session - 2099-01-01T00:00:00.000Z" })
-
-    const title = yield* SessionTitle.Service
-    yield* title.generateForFirstPrompt(sessionID)
-
-    const store = yield* SessionStore.Service
-    expect(requests).toHaveLength(0)
-    expect((yield* store.get(sessionID))?.title).toBe("New session - 2099-01-01T00:00:00.000Z")
-  }),
-)
-
-it.effect("retries after a failed title request", () =>
-  Effect.gen(function* () {
-    requests = []
-    const agentService = yield* Agent.Service
-    yield* agentService.transform((editor) => {
-      editor.update(Agent.ID.make("title"), (agent) => {
-        agent.mode = "primary"
-        agent.hidden = true
-        agent.system = "You are a title generator."
-      })
-    })
-    const sessionID = Session.ID.make("ses_title_retry")
-    yield* insertSession(sessionID)
-    yield* prompt(sessionID, "Retry this title")
-    const title = yield* SessionTitle.Service
-    titleStream = () => Stream.make(LLMEvent.providerError({ message: "Provider unavailable" }))
-
-    yield* title.generateForFirstPrompt(sessionID)
-    titleStream = successfulTitle
-    yield* title.generateForFirstPrompt(sessionID)
-
-    const store = yield* SessionStore.Service
-    expect(requests).toHaveLength(2)
-    expect((yield* store.get(sessionID))?.title).toBe("Generated Title")
-  }),
-)
-
-it.effect("preserves a manual rename completed while generation is in flight", () =>
-  Effect.gen(function* () {
-    requests = []
-    const agentService = yield* Agent.Service
-    yield* agentService.transform((editor) => {
-      editor.update(Agent.ID.make("title"), (agent) => {
-        agent.mode = "primary"
-        agent.hidden = true
-        agent.system = "You are a title generator."
-      })
-    })
-    const sessionID = Session.ID.make("ses_title_manual_rename")
-    yield* insertSession(sessionID)
-    yield* prompt(sessionID, "Generate this title")
-    const started = yield* Deferred.make<void>()
-    const release = yield* Deferred.make<void>()
-    titleStream = () =>
-      Stream.unwrap(
-        Deferred.succeed(started, undefined).pipe(
-          Effect.andThen(Deferred.await(release)),
-          Effect.as(successfulTitle()),
-        ),
-      )
-    const title = yield* SessionTitle.Service
-    const fiber = yield* title.generateForFirstPrompt(sessionID).pipe(Effect.forkScoped)
-    yield* Deferred.await(started)
-    const events = yield* Bus.Service
-    yield* events.publish(SessionEvent.Renamed, { sessionID, title: "Manual title" })
-    yield* Deferred.succeed(release, undefined)
-    yield* Fiber.join(fiber)
-
-    const store = yield* SessionStore.Service
-    expect(requests).toHaveLength(1)
-    expect((yield* store.get(sessionID))?.title).toBe("Manual title")
+    expect(untouched?.title).toBe("New session - fake")
   }),
 )

packages/core/test/tool-read.test.ts

@@ -2,7 +2,7 @@ import { beforeEach, describe, expect } from "bun:test"
 import path from "path"
 import { Effect, Exit, Layer, PlatformError, Stream } from "effect"
 import { Config } from "@opencode-ai/core/config"
-import { ConfigMedia } from "@opencode-ai/core/config/media"
+import { ConfigAttachments } from "@opencode-ai/core/config/attachments"
 import { AppNodeBuilder } from "@opencode-ai/core/effect/app-node-builder"
 import { LayerNode } from "@opencode-ai/util/effect/layer-node"
 import { FileSystem } from "@opencode-ai/core/filesystem"
@@ -432,8 +432,8 @@ describe("ReadTool", () => {
         new Config.Document({
           type: "document",
           info: new Config.Info({
-            media: new ConfigMedia.Info({
-              image: new ConfigMedia.Image({ auto_resize: false, max_width: 4 }),
+            attachments: new ConfigAttachments.Info({
+              image: new ConfigAttachments.Image({ auto_resize: false, max_width: 4 }),
             }),
           }),
         }),
@@ -475,7 +475,7 @@ describe("ReadTool", () => {
         new Config.Document({
           type: "document",
           info: new Config.Info({
-            media: new ConfigMedia.Info({ image: new ConfigMedia.Image({ max_width: 4 }) }),
+            attachments: new ConfigAttachments.Info({ image: new ConfigAttachments.Image({ max_width: 4 }) }),
           }),
         }),
       ])
@@ -514,8 +514,8 @@ describe("ReadTool", () => {
         new Config.Document({
           type: "document",
           info: new Config.Info({
-            media: new ConfigMedia.Info({
-              image: new ConfigMedia.Image({ max_base64_bytes: 1 }),
+            attachments: new ConfigAttachments.Info({
+              image: new ConfigAttachments.Image({ max_base64_bytes: 1 }),
             }),
           }),
         }),

packages/core/test/tool-subagent.test.ts

@@ -47,7 +47,7 @@ const executionNode = makeGlobalNode({
       const completed = new Set<Session.ID>()
       const complete = Effect.fn("SubagentTest.complete")(function* (sessionID: Session.ID) {
         if (completed.has(sessionID)) return
-        if ((yield* store.get(sessionID))?.title?.includes("fail")) {
+        if ((yield* store.get(sessionID))?.title.includes("fail")) {
           yield* new SessionRunnerModel.ModelNotSelectedError({ sessionID })
           return
         }

packages/enterprise/package.json

@@ -16,7 +16,6 @@
     "@opencode-ai/core": "workspace:*",
     "@opencode-ai/session-ui": "workspace:*",
     "@opencode-ai/ui": "workspace:*",
-    "@opencode-ai/util": "workspace:*",
     "aws4fetch": "^1.0.20",
     "@pierre/diffs": "catalog:",
     "@solidjs/router": "catalog:",

packages/enterprise/src/routes/share/[shareID].tsx

@@ -4,7 +4,6 @@ import { SessionReview } from "@opencode-ai/session-ui/session-review"
 import { DataProvider } from "@opencode-ai/session-ui/context"
 import { FileComponentProvider } from "@opencode-ai/ui/context/file"
 import { WorkerPoolProvider } from "@opencode-ai/ui/context/worker-pool"
-import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"
 import { createAsync, query, useParams } from "@solidjs/router"
 import { createMemo, createSignal, ErrorBoundary, For, Match, Show, Switch } from "solid-js"
 import { Share } from "~/core/share"
@@ -159,7 +158,6 @@ export default function () {
           const match = createMemo(() => Binary.search(data().session, data().sessionID, (s) => s.id))
           if (!match().found) throw new Error(`Session ${data().sessionID} not found`)
           const info = createMemo(() => data().session[match().index])
-          const title = createMemo(() => withTimestampedFallback(info()))
           const ogImage = createMemo(() => {
             const models = new Set<string>()
             const messages = data().message[data().sessionID] ?? []
@@ -169,7 +167,7 @@ export default function () {
               }
             }
             const modelIDs = Array.from(models)
-            const encodedTitle = encodeURIComponent(Base64.encode(encodeURIComponent(title().substring(0, 700))))
+            const encodedTitle = encodeURIComponent(Base64.encode(encodeURIComponent(info().title.substring(0, 700))))
             let modelParam: string
             if (modelIDs.length === 1) {
               modelParam = modelIDs[0]
@@ -186,7 +184,9 @@ export default function () {
 
           return (
             <>
-              <Title>{title()} | OpenCode</Title>
+              <Show when={info().title}>
+                <Title>{info().title} | OpenCode</Title>
+              </Show>
               <Meta name="description" content="opencode - The AI coding agent built for the terminal." />
               <Meta property="og:image" content={ogImage()} />
               <Meta name="twitter:image" content={ogImage()} />
@@ -240,7 +240,7 @@ export default function () {
                               </div>
                             </div>
                           </div>
-                          <div class="text-left text-16-medium text-text-strong">{title()}</div>
+                          <div class="text-left text-16-medium text-text-strong">{info().title}</div>
                         </div>
                       )
 

packages/plugin/src/effect/session.ts

@@ -1,6 +1,5 @@
 import type { SessionApi } from "@opencode-ai/client/effect/api"
 import type { Message, SystemPart } from "@opencode-ai/ai"
-import type { HttpRequest } from "@opencode-ai/ai/route"
 import type { Agent } from "@opencode-ai/schema/agent"
 import type { Model } from "@opencode-ai/schema/model"
 import type { Session } from "@opencode-ai/schema/session"
@@ -16,15 +15,8 @@ export interface SessionContext {
   tools: Record<string, { description: string; input: JsonSchema.JsonSchema }>
 }
 
-export interface SessionRequest extends HttpRequest {
-  readonly sessionID: Session.ID
-  readonly agent: Agent.ID
-  readonly model: Model.Ref
-}
-
 export interface SessionHooks {
   readonly context: SessionContext
-  readonly request: SessionRequest
 }
 
 export type SessionDomain = Pick<

packages/plugin/src/promise/session.ts

@@ -1,6 +1,5 @@
 import type { SessionApi } from "@opencode-ai/client/promise/api"
 import type { Message, SystemPart } from "@opencode-ai/ai"
-import type { HttpRequest } from "@opencode-ai/ai/route"
 import type { Agent } from "@opencode-ai/schema/agent"
 import type { Model } from "@opencode-ai/schema/model"
 import type { Session } from "@opencode-ai/schema/session"
@@ -16,15 +15,8 @@ export interface SessionContext {
   tools: Record<string, { description: string; input: JsonSchema.JsonSchema }>
 }
 
-export interface SessionRequest extends HttpRequest {
-  readonly sessionID: Session.ID
-  readonly agent: Agent.ID
-  readonly model: Model.Ref
-}
-
 export interface SessionHooks {
   readonly context: SessionContext
-  readonly request: SessionRequest
 }
 
 export type SessionDomain = Pick<

packages/protocol/src/groups/session.ts

@@ -628,6 +628,22 @@ export const makeSessionGroup = <I extends HttpApiMiddleware.AnyId, S>(sessionLo
           }),
         ),
     )
+    .add(
+      HttpApiEndpoint.post("session.pending.withdraw", "/api/session/:sessionID/pending/:inputID/withdraw", {
+        params: { sessionID: Session.ID, inputID: SessionMessage.ID },
+        success: Schema.Struct({ data: Schema.Boolean }),
+        error: SessionNotFoundError,
+      })
+        .middleware(sessionLocationMiddleware)
+        .annotateMerge(
+          OpenApi.annotations({
+            identifier: "v2.session.pending.withdraw",
+            summary: "Withdraw pending session input",
+            description:
+              "Withdraw one admitted input before promotion. Returns true when the input was withdrawn or had already been withdrawn, and false when it is no longer pending so callers can fall back to reverting projected history.",
+          }),
+        ),
+    )
     .annotateMerge(
       OpenApi.annotations({
         title: "session",

packages/schema/src/session-event.ts

@@ -155,6 +155,16 @@ export const InputAdmitted = Event.durable({
 })
 export type InputAdmitted = typeof InputAdmitted.Type
 
+export const InputWithdrawn = Event.durable({
+  type: "session.input.withdrawn",
+  ...options,
+  schema: {
+    ...Base,
+    inputID: SessionMessage.ID,
+  },
+})
+export type InputWithdrawn = typeof InputWithdrawn.Type
+
 export namespace Execution {
   export const Started = Event.durable({ type: "session.execution.started", ...options, schema: Base })
   export type Started = typeof Started.Type
@@ -556,6 +566,7 @@ export const Definitions = Event.inventory(
   Forked,
   InputPromoted,
   InputAdmitted,
+  InputWithdrawn,
   Execution.Started,
   Execution.Succeeded,
   Execution.Failed,

packages/schema/src/session.ts

@@ -42,7 +42,7 @@ export const Info = Schema.Struct({
     updated: DateTimeUtcFromMillis,
     archived: DateTimeUtcFromMillis.pipe(optional),
   }),
-  title: Schema.String.pipe(optional),
+  title: Schema.String,
   location: Location.Ref,
   subpath: RelativePath.pipe(optional),
   revert: Revert.pipe(optional),

packages/schema/src/v1/session.ts

@@ -552,7 +552,7 @@ export const SessionInfo = Schema.Struct({
   cost: optional(Schema.Finite),
   tokens: optional(SessionTokens),
   share: optional(SessionShare),
-  title: optional(Schema.String),
+  title: Schema.String,
   agent: optional(Schema.String),
   model: optional(SessionModel),
   version: Schema.String,

packages/schema/test/contract-hygiene.test.ts

@@ -17,7 +17,7 @@ import { Money } from "../src/money.js"
 import { Skill } from "../src/skill.js"
 import { Shell } from "../src/shell.js"
 import { PersistedRevert } from "../src/session-revert.js"
-import { AbsolutePath, optional } from "../src/schema.js"
+import { optional } from "../src/schema.js"
 
 describe("contract hygiene", () => {
   test("restricts agent colors to six-digit hex values", () => {
@@ -52,18 +52,6 @@ describe("contract hygiene", () => {
         metadata: undefined,
       }),
     ).toEqual({ text: "completed" })
-
-    expect(
-      Schema.encodeSync(Session.Info)({
-        id: Session.ID.make("ses_untitled"),
-        projectID: Project.ID.make("global"),
-        cost: Money.USD.zero,
-        tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
-        time: { created: DateTime.makeUnsafe(0), updated: DateTime.makeUnsafe(0) },
-        title: undefined,
-        location: { directory: AbsolutePath.make("/project") },
-      }),
-    ).not.toHaveProperty("title")
   })
 
   test("pending session items omit the internal admission sequence", () => {

packages/schema/test/event-manifest.test.ts

@@ -108,6 +108,7 @@ describe("public event manifest", () => {
         "session.forked.2",
         "session.input.promoted.1",
         "session.input.admitted.1",
+        "session.input.withdrawn.1",
         "session.execution.started.1",
         "session.execution.succeeded.1",
         "session.execution.failed.1",

packages/server/src/handlers/session.ts

@@ -608,6 +608,23 @@ export const SessionHandler = HttpApiBuilder.group(Api, "server.session", (handl
           }
         }),
       )
+      .handle(
+        "session.pending.withdraw",
+        Effect.fn(function* (ctx) {
+          return {
+            data: yield* session.withdraw(ctx.params).pipe(
+              Effect.catchTag("Session.NotFoundError", (error) =>
+                Effect.fail(
+                  new SessionNotFoundError({
+                    sessionID: error.sessionID,
+                    message: `Session not found: ${error.sessionID}`,
+                  }),
+                ),
+              ),
+            ),
+          }
+        }),
+      )
       .handle(
         "session.instructions.entry.list",
         Effect.fn(function* (ctx) {

packages/tui/src/app.tsx

@@ -66,7 +66,7 @@ import { DialogThemeList } from "./component/dialog-theme-list"
 import { DialogHelp } from "./ui/dialog-help"
 import { DialogAgent } from "./component/dialog-agent"
 import { DialogSessionList } from "./component/dialog-session-list"
-import { DialogOpen } from "./component/dialog-open"
+import { DialogProject } from "./component/dialog-project"
 import { SessionTabs } from "./component/session-tabs"
 import { ThemeErrorToast } from "./component/theme-error-toast"
 import { ThemeProvider, useTheme, useThemes } from "./context/theme"
@@ -76,7 +76,7 @@ import { PromptHistoryProvider } from "./component/prompt/history"
 import { FrecencyProvider } from "./component/prompt/frecency"
 import { PromptStashProvider } from "./component/prompt/stash"
 import { Toast, ToastProvider, useToast } from "./ui/toast"
-import { isFallbackTitle } from "@opencode-ai/util/session-title-fallback"
+import { isDefaultTitle } from "./util/session"
 import * as Model from "./util/model"
 import { ArgsProvider, useArgs, type Args } from "./context/args"
 import open from "open"
@@ -95,11 +95,13 @@ import { StorageProvider } from "./context/storage"
 
 registerOpencodeSpinner()
 
-const appGlobalBindingCommands = ["session.list", "session.new", "open.menu"] as const
+const appGlobalBindingCommands = ["session.list", "session.new"] as const
 
 const sessionTabBindingCommands = [
   "session.tab.next",
   "session.tab.previous",
+  "session.tab.history.back",
+  "session.tab.history.forward",
   "session.tab.next_unread",
   "session.tab.previous_unread",
   "session.tab.close",
@@ -523,11 +525,8 @@ function App(props: { pair?: DialogPairCredentials }) {
     renderer.useMouse = config.data.mouse
   })
 
-  let active: { id: string; title?: string } | undefined
   // Update terminal window title based on current route and session
   createEffect(() => {
-    const session = route.data.type === "session" ? data.session.get(route.data.sessionID) : undefined
-    if (session) active = { id: session.id, title: session.title }
     if (!terminalTitleEnabled()) return
 
     if (route.data.type === "home") {
@@ -536,13 +535,14 @@ function App(props: { pair?: DialogPairCredentials }) {
     }
 
     if (route.data.type === "session") {
-      const title = session?.title
-      if (!title || isFallbackTitle(title)) {
+      const session = data.session.get(route.data.sessionID)
+      if (!session || isDefaultTitle(session.title)) {
         renderer.setTerminalTitle("OpenCode")
         return
       }
 
-      renderer.setTerminalTitle(`OC | ${title.length > 40 ? title.slice(0, 37) + "..." : title}`)
+      const title = session.title.length > 40 ? session.title.slice(0, 37) + "..." : session.title
+      renderer.setTerminalTitle(`OC | ${title}`)
       return
     }
 
@@ -646,21 +646,17 @@ function App(props: { pair?: DialogPairCredentials }) {
         run: () => {
           route.navigate({
             type: "home",
-            location:
-              route.data.type === "session"
-                ? (data.session.get(route.data.sessionID)?.location ?? location.ref)
-                : undefined,
           })
           dialog.clear()
         },
       },
       {
-        name: "open.menu",
-        title: "Open session or project",
+        name: "project.switch",
+        title: "Switch project",
         category: "Session",
-        slash: { name: "open", aliases: ["projects", "project"] },
+        slash: { name: "projects", aliases: ["project"] },
         run: () => {
-          dialog.replace(() => <DialogOpen />)
+          dialog.replace(() => <DialogProject />)
         },
       },
       ...Array.from({ length: 9 }, (_, i) => ({
@@ -687,6 +683,22 @@ function App(props: { pair?: DialogPairCredentials }) {
         enabled: sessionTabs.enabled,
         run: () => sessionTabs.cycle(-1),
       },
+      {
+        name: "session.tab.history.back",
+        title: "Back in tab history",
+        category: "Session",
+        palette: undefined,
+        enabled: sessionTabs.enabled,
+        run: () => sessionTabs.history(-1),
+      },
+      {
+        name: "session.tab.history.forward",
+        title: "Forward in tab history",
+        category: "Session",
+        palette: undefined,
+        enabled: sessionTabs.enabled,
+        run: () => sessionTabs.history(1),
+      },
       {
         name: "session.tab.next_unread",
         title: "Next unread tab",
@@ -1148,11 +1160,10 @@ function App(props: { pair?: DialogPairCredentials }) {
 
   event.on("session.deleted", (evt) => {
     if (route.data.type === "session" && route.data.sessionID === evt.data.sessionID) {
-      const title = active?.id === evt.data.sessionID ? active.title : undefined
       route.navigate({ type: "home" })
       toast.show({
         variant: "info",
-        message: title ? `Session "${title}" was deleted` : "The current session was deleted",
+        message: "The current session was deleted",
       })
     }
   })

packages/tui/src/component/dialog-config.tsx

@@ -105,7 +105,7 @@ export const settings: Setting[] = [
     title: "Scope",
     category: "Tabs",
     path: ["tabs", "scope"],
-    default: "global",
+    default: "cwd",
     values: ["cwd", "global"],
     labels: ["current directory", "global"],
   },

packages/tui/src/component/dialog-move-session.tsx

@@ -2,8 +2,8 @@ import { useTerminalDimensions } from "@opentui/solid"
 import { TextAttributes } from "@opentui/core"
 import { createMemo, createResource, createSignal, onMount, Show } from "solid-js"
 import path from "path"
-import { DialogSelect, dialogSelectContentWidth, type DialogSelectOption } from "../ui/dialog-select"
-import { dialogWidth, useDialog } from "../ui/dialog"
+import { DialogSelect, type DialogSelectOption } from "../ui/dialog-select"
+import { useDialog } from "../ui/dialog"
 import { useClient } from "../context/client"
 import { Keymap } from "../context/keymap"
 import { useTheme } from "../context/theme"
@@ -159,10 +159,7 @@ export function DialogMoveSession(props: DialogMoveSessionProps) {
       if (b.location === b.root.directory) return 1
       return a.location.localeCompare(b.location)
     })
-    const titleWidth = Math.max(
-      1,
-      dialogSelectContentWidth(Math.min(dialogWidth("xlarge"), dimensions().width - 2)),
-    )
+    const titleWidth = Math.max(1, Math.min(116, dimensions().width - 2) - 12)
 
     return list.map((item) => {
       const title = abbreviateHome(item.location, paths.home)

packages/tui/src/component/dialog-open.tsx

@@ -1,178 +0,0 @@
-import path from "path"
-import { createMemo, createResource, createSignal, onMount } from "solid-js"
-import type { SessionInfo } from "@opencode-ai/client"
-import { useTerminalDimensions } from "@opentui/solid"
-import { dialogWidth, useDialog } from "../ui/dialog"
-import { DialogSelect, dialogSelectContentWidth } from "../ui/dialog-select"
-import { useRoute } from "../context/route"
-import { useData } from "../context/data"
-import { useClient } from "../context/client"
-import { useLocation } from "../context/location"
-import { useSessionTabs } from "../context/session-tabs"
-import { useTheme, useThemes } from "../context/theme"
-import { Keymap } from "../context/keymap"
-import { Locale } from "../util/locale"
-import { abbreviateHome } from "../runtime"
-import { useTuiPaths } from "../context/runtime"
-import { truncateFilePath } from "../ui/file-path"
-import { stringWidth } from "../util/string-width"
-import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"
-import { Spinner } from "./spinner"
-
-const RECENT_LIMIT = 8
-
-type OpenTarget = { type: "session"; sessionID: string } | { type: "project"; directory: string }
-
-export function DialogOpen() {
-  const dialog = useDialog()
-  const route = useRoute()
-  const data = useData()
-  const client = useClient()
-  const location = useLocation()
-  const sessionTabs = useSessionTabs()
-  const themes = useThemes()
-  const theme = useTheme("elevated")
-  const mode = themes.mode
-  const paths = useTuiPaths()
-  const dimensions = useTerminalDimensions()
-  const shortcuts = Keymap.useShortcuts()
-  const [filter, setFilter] = createSignal("")
-  const [selectionMoved, setSelectionMoved] = createSignal(false)
-
-  void data.project.sync().catch(() => {})
-
-  // One background fetch fills in recent sessions from other projects; the menu renders
-  // immediately from the local store and never blocks on the network.
-  const [fetched] = createResource(
-    () =>
-      client.api.session
-        .list({ limit: 50, order: "desc", parentID: null })
-        .then((response) => response.data)
-        .catch(() => [] as SessionInfo[]),
-    { initialValue: [] },
-  )
-
-  const openTabs = createMemo(
-    () => new Set(sessionTabs.enabled() ? sessionTabs.tabs().map((tab) => tab.sessionID) : []),
-  )
-  const currentSessionID = createMemo(() =>
-    route.data.type === "session" ? data.session.root(route.data.sessionID) : undefined,
-  )
-  const sessions = createMemo(() => {
-    const seen = new Set<string>()
-    return [...data.session.list(), ...fetched()]
-      .filter((session) => {
-        if (session.parentID || seen.has(session.id)) return false
-        seen.add(session.id)
-        return true
-      })
-      .toSorted((a, b) => b.time.updated - a.time.updated)
-  })
-
-  const options = createMemo(() => {
-    const tabs = openTabs()
-    // With an empty query the menu shows what is not already one keystroke away: open tabs are
-    // visible in the strip, so recents exclude them. Typing widens the pool to every session so
-    // matching a loaded tab by name still switches to it.
-    const recent = filter().trim()
-      ? sessions()
-      : sessions()
-          .filter((session) => !tabs.has(session.id))
-          .slice(0, RECENT_LIMIT)
-    const sessionOptions = recent.map((session) => {
-      const project = data.project.get(session.projectID)
-      const name = project?.canonical === "/" ? undefined : project?.name || path.basename(project?.canonical ?? "")
-      const running =
-        data.session.status(session.id) === "running" ||
-        data.session.family(session.id).some((id) => data.session.status(id) === "running")
-      return {
-        title: withTimestampedFallback(session),
-        value: { type: "session", sessionID: session.id } as OpenTarget,
-        category: "Sessions",
-        footer: `${name ? `${Locale.truncate(name, 20)} · ` : ""}${timeAgo(session.time.updated)}`,
-        onSelect: () => location.set(session.location),
-        gutter: running
-          ? () => <Spinner />
-          : tabs.has(session.id)
-            ? () => <text fg={theme.hue.accent[mode() === "light" ? 800 : 200]}>▪</text>
-            : undefined,
-      }
-    })
-
-    const current = location.current?.project
-    const seen = new Set<string>()
-    const projectOptions = data.project
-      .list()
-      .filter((project) => {
-        if (project.canonical === "/" || seen.has(project.canonical)) return false
-        seen.add(project.canonical)
-        return true
-      })
-      .map((project) => {
-        const title = project.name ?? path.basename(project.canonical)
-        const footer = abbreviateHome(project.canonical, paths.home)
-        const width =
-          dialogSelectContentWidth(Math.min(dialogWidth("large"), dimensions().width - 2)) - stringWidth(title)
-        return {
-          title,
-          footer: truncateFilePath(footer, width),
-          searchText: footer,
-          value: { type: "project", directory: project.canonical } as OpenTarget,
-          category: "Projects",
-          gutter:
-            project.canonical === current?.canonical
-              ? () => <text fg={theme.text.formfield.selected}>●</text>
-              : undefined,
-        }
-      })
-
-    return [...sessionOptions, ...projectOptions]
-  })
-
-  onMount(() => dialog.setSize("large"))
-
-  return (
-    <DialogSelect
-      title="Open"
-      placeholder="Search sessions and projects…"
-      options={options()}
-      current={currentSessionID() ? ({ type: "session", sessionID: currentSessionID()! } as OpenTarget) : undefined}
-      focusCurrent={false}
-      preserveSelection={selectionMoved()}
-      onMove={() => setSelectionMoved(true)}
-      onFilter={setFilter}
-      noMatchView={
-        <box paddingLeft={4} paddingRight={4}>
-          <text fg={theme.text.subdued}>
-            {shortcuts.get("session.list")
-              ? `No matches · search all sessions with ${shortcuts.get("session.list")}`
-              : "No matches"}
-          </text>
-        </box>
-      }
-      onSelect={(option) => {
-        dialog.clear()
-        if (option.value.type === "session") {
-          route.navigate({ type: "session", sessionID: option.value.sessionID })
-          return
-        }
-        const target = { directory: option.value.directory }
-        route.navigate({ type: "home", location: target })
-        location.set(target)
-      }}
-    />
-  )
-}
-
-function timeAgo(timestamp: number) {
-  const minutes = Math.floor((Date.now() - timestamp) / 60_000)
-  if (minutes < 1) return "now"
-  if (minutes < 60) return `${minutes}m`
-  const hours = Math.floor(minutes / 60)
-  if (hours < 24) return `${hours}h`
-  const days = Math.floor(hours / 24)
-  if (days < 30) return `${days}d`
-  const months = Math.floor(days / 30)
-  if (months < 12) return `${months}mo`
-  return `${Math.floor(days / 365)}y`
-}

packages/tui/src/component/dialog-project.tsx

@@ -0,0 +1,77 @@
+import path from "path"
+import { createMemo } from "solid-js"
+import { DialogSelect } from "../ui/dialog-select"
+import { useDialog } from "../ui/dialog"
+import { useData } from "../context/data"
+import { useRoute } from "../context/route"
+import { abbreviateHome } from "../runtime"
+import { useTuiPaths } from "../context/runtime"
+import { useLocation } from "../context/location"
+import { useToast } from "../ui/toast"
+import { useTerminalDimensions } from "@opentui/solid"
+import { truncateFilePath } from "../ui/file-path"
+import { stringWidth } from "../util/string-width"
+
+export function DialogProject() {
+  const dialog = useDialog()
+  const data = useData()
+  const route = useRoute()
+  const paths = useTuiPaths()
+  const location = useLocation()
+  const toast = useToast()
+  const dimensions = useTerminalDimensions()
+
+  data.project.invalidate()
+  void data.project.sync().catch(toast.error)
+
+  const current = () => location.current?.project
+
+  const options = createMemo(() => {
+    const seen = new Set<string>()
+    return data.project
+      .list()
+      .filter((project) => {
+        if (project.canonical === "/" || seen.has(project.canonical)) return false
+        seen.add(project.canonical)
+        return true
+      })
+      .toSorted((a, b) => {
+        if (a.id === current()?.id) return -1
+        if (b.id === current()?.id) return 1
+        return 0
+      })
+      .map((project) => {
+        const title = project.name ?? path.basename(project.canonical)
+        const description = abbreviateHome(project.canonical, paths.home)
+        // Dialog padding, the current marker, title padding, and the separating space use nine columns.
+        const width = Math.min(60, dimensions().width - 2) - 9 - stringWidth(title)
+        return {
+          title,
+          description: truncateFilePath(description, width),
+          searchText: description,
+          value: project.canonical,
+        }
+      })
+  })
+
+  return (
+    <DialogSelect
+      title="Switch project"
+      placeholder="Search projects…"
+      options={options()}
+      current={current()?.canonical}
+      emptyView={
+        <box paddingLeft={4} paddingRight={4} paddingTop={1}>
+          <text>No projects found</text>
+        </box>
+      }
+      onSelect={(option) => {
+        dialog.clear()
+        if (option.value === current()?.canonical) return
+        const target = { directory: option.value }
+        route.navigate({ type: "home", location: target })
+        location.set(target)
+      }}
+    />
+  )
+}

packages/tui/src/component/dialog-session-list.tsx

@@ -17,9 +17,6 @@ import { DialogSessionRename } from "./dialog-session-rename"
 import { Spinner } from "./spinner"
 import { errorMessage } from "../util/error"
 import { useSessionTabs } from "../context/session-tabs"
-import { useStorage } from "../context/storage"
-import { useConfig } from "../config"
-import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"
 
 export function DialogSessionList() {
   const dialog = useDialog()
@@ -31,16 +28,12 @@ export function DialogSessionList() {
   const client = useClient()
   const local = useLocal()
   const sessionTabs = useSessionTabs()
-  const config = useConfig().data
   const toast = useToast()
   const [filter, setFilter] = createSignal("")
   const shortcuts = Keymap.useShortcuts()
   const [search, setSearch] = createDebouncedSignal("", 150)
   const [toDelete, setToDelete] = createSignal<string>()
-  const [prefs, updatePrefs] = useStorage().store("session-list", {
-    initial: { allProjects: config.tabs?.scope !== "cwd" },
-  })
-  const allProjects = () => prefs.allProjects
+  const [allProjects, setAllProjects] = createSignal(false)
 
   const [searchResults, { mutate: setSearchResults }] = createResource(
     () => ({ query: search().trim(), allProjects: allProjects() }),
@@ -82,15 +75,12 @@ export function DialogSessionList() {
           (session.projectID === current?.project.id && session.location.directory === current.directory),
       )
     if (!query) return sessions
-    return sessions.filter(
-      (session) => !session.parentID && withTimestampedFallback(session).toLowerCase().includes(query),
-    )
+    return sessions.filter((session) => !session.parentID && session.title.toLowerCase().includes(query))
   })
   const sessions = createMemo(() => {
     const query = filter().trim()
     const local = localSessions()
-    if (query !== search().trim()) return searchResults.latest?.sessions ?? local
-    if (searchResults.loading) return searchResults.latest?.sessions ?? []
+    if (query !== search().trim() || searchResults.loading) return searchResults.latest?.sessions ?? local
     const result = searchResults()
     if (result?.query !== query || result.allProjects !== allProjects() || result.error) return local
     return result.sessions
@@ -147,21 +137,17 @@ export function DialogSessionList() {
       const slot = sessionTabs.enabled() ? undefined : slotByID.get(session.id)
       const deleting = toDelete() === session.id
       return {
-        title: deleting
-          ? `Press ${shortcuts.get("session.delete")} again to confirm`
-          : withTimestampedFallback(session),
+        title: deleting ? `Press ${shortcuts.get("session.delete")} again to confirm` : session.title,
         value: session.id,
         category,
         footer,
         bg: deleting ? theme.background.action.destructive.focused : undefined,
         fg: deleting ? theme.text.action.destructive.focused : undefined,
-        gutter:
-          data.session.status(session.id) === "running" ||
-          data.session.family(session.id).some((id) => data.session.status(id) === "running")
-            ? () => <Spinner />
-            : slot === undefined
-              ? undefined
-              : () => <text fg={theme.hue.accent[mode() === "light" ? 800 : 200]}>{slot}</text>,
+        gutter: data.session.family(session.id).some((id) => data.session.status(id) === "running")
+          ? () => <Spinner />
+          : slot === undefined
+            ? undefined
+            : () => <text fg={theme.hue.accent[mode() === "light" ? 800 : 200]}>{slot}</text>,
       }
     }
 
@@ -203,9 +189,7 @@ export function DialogSessionList() {
           title: allProjects() ? "Show current directory sessions" : "Show all project sessions",
           group: "Dialog",
           run: () => {
-            void updatePrefs((draft) => {
-              draft.allProjects = !draft.allProjects
-            }).catch(() => {})
+            setAllProjects((value) => !value)
           },
         },
       ]}
@@ -247,9 +231,7 @@ export function DialogSessionList() {
               .remove({ sessionID: option.value })
               .then(() => {
                 setSearchResults((result) =>
-                  result
-                    ? { ...result, sessions: result.sessions.filter((session) => session.id !== option.value) }
-                    : result,
+                  result ? { ...result, sessions: result.sessions.filter((session) => session.id !== option.value) } : result,
                 )
               })
               .catch((error) => {

packages/tui/src/component/logo.tsx

@@ -1,13 +1,11 @@
 import { RGBA, TextAttributes } from "@opentui/core"
 import { For, type JSX } from "solid-js"
-import { useTerminalDimensions } from "@opentui/solid"
 import { useTheme } from "../context/theme"
 import { tint } from "../theme/color"
-import { go, logo } from "../logo"
+import { logo } from "../logo"
 
 export function Logo() {
   const theme = useTheme()
-  const dimensions = useTerminalDimensions()
 
   const renderLine = (line: string, fg: RGBA, bold: boolean): JSX.Element[] => {
     const shadow = tint(theme.background.default, fg, 0.25)
@@ -51,29 +49,14 @@ export function Logo() {
 
   return (
     <box>
-      {dimensions().height < 12 ? null : dimensions().width < 22 ? (
-        <For each={go.right.slice(1)}>
-          {(line) => <box flexDirection="row">{renderLine(line, theme.text.default, true)}</box>}
-        </For>
-      ) : dimensions().width < 44 ? (
-        <>
-          <For each={logo.left.slice(1)}>
-            {(line) => <box flexDirection="row">{renderLine(line, theme.text.subdued, false)}</box>}
-          </For>
-          <For each={logo.right}>
-            {(line) => <box flexDirection="row">{renderLine(line, theme.text.default, true)}</box>}
-          </For>
-        </>
-      ) : (
-        <For each={logo.left}>
-          {(line, index) => (
-            <box flexDirection="row" gap={1}>
-              <box flexDirection="row">{renderLine(line, theme.text.subdued, false)}</box>
-              <box flexDirection="row">{renderLine(logo.right[index()], theme.text.default, true)}</box>
-            </box>
-          )}
-        </For>
-      )}
+      <For each={logo.left}>
+        {(line, index) => (
+          <box flexDirection="row" gap={1}>
+            <box flexDirection="row">{renderLine(line, theme.text.subdued, false)}</box>
+            <box flexDirection="row">{renderLine(logo.right[index()], theme.text.default, true)}</box>
+          </box>
+        )}
+      </For>
     </box>
   )
 }

packages/tui/src/component/patch-diff.tsx

@@ -1,83 +0,0 @@
-/** @jsxImportSource @opentui/solid */
-import { DiffRenderable, LineNumberRenderable, type ColorInput } from "@opentui/core"
-import type { JSX } from "@opentui/solid"
-import { createMemo, For, Show, splitProps } from "solid-js"
-import { splitPatchHunks } from "../util/diff"
-import { stringWidth } from "../util/string-width"
-
-export interface PatchDiffRef {
-  readonly hunks: () => readonly DiffRenderable[]
-}
-
-type Props = Omit<JSX.IntrinsicElements["diff"], "diff" | "lineNumberBg" | "ref"> & {
-  diff: string
-  hunkFg: ColorInput
-  lineNumberBg: ColorInput
-  ref?: (value: PatchDiffRef) => void
-}
-
-export function PatchDiff(props: Props) {
-  const [local, diffProps] = splitProps(props, ["diff", "hunkFg", "lineNumberBg", "ref"])
-  const hunks = createMemo(() => splitPatchHunks(local.diff))
-  const nodes = new Map<number, DiffRenderable>()
-  local.ref?.({
-    hunks: () =>
-      [...nodes.entries()]
-        .sort(([left], [right]) => left - right)
-        .map(([, node]) => node)
-        .filter((node) => !node.isDestroyed),
-  })
-  const syncGutters = (attempt = 0) => {
-    requestAnimationFrame(() => {
-      const sides = [...nodes.values()]
-        .filter((item) => !item.isDestroyed)
-        .flatMap((item) => item.getChildren().filter((side) => side instanceof LineNumberRenderable))
-      const lineNumbers = sides.map((side) => new Map([...side.getLineNumbers()].filter(([line]) => line >= 0)))
-      const digits = lineNumbers.map((numbers) => Math.max(0, ...numbers.values()).toString().length)
-      const after = sides.map((side) =>
-        Math.max(
-          0,
-          ...[...side.getLineSigns()].filter(([line]) => line >= 0).map(([, sign]) => stringWidth(sign.after ?? "")),
-        ),
-      )
-      const maxDigits = Math.max(...digits)
-      const maxAfter = Math.max(...after)
-      if (!maxDigits && attempt < 2) return syncGutters(attempt + 1)
-      if (!maxDigits) return
-      sides.forEach((side) => {
-        const index = sides.indexOf(side)
-        const signs = new Map([...side.getLineSigns()].filter(([line]) => line >= 0))
-        signs.set(-1, { after: " ".repeat(maxAfter + maxDigits - digits[index]) })
-        side.setLineNumbers(lineNumbers[index])
-        side.setLineSigns(signs)
-      })
-    })
-  }
-  const register = (index: number, node: DiffRenderable) => {
-    nodes.set(index, node)
-    syncGutters()
-  }
-
-  return (
-    <For each={hunks()}>
-      {(hunk, index) => (
-        <>
-          <Show when={index() > 0}>
-            <box width="100%" height={1} backgroundColor={local.lineNumberBg}>
-              <text fg={local.hunkFg} bg={local.lineNumberBg}>
-                {` ${hunk.header ?? ""}`}
-              </text>
-            </box>
-          </Show>
-          <diff
-            {...diffProps}
-            ref={(node: DiffRenderable) => register(index(), node)}
-            diff={hunk.patch}
-            minHeight={hunk.rows}
-            lineNumberBg={local.lineNumberBg}
-          />
-        </>
-      )}
-    </For>
-  )
-}

packages/tui/src/component/prompt/index.tsx

@@ -240,6 +240,7 @@ export function Prompt(props: PromptProps) {
               return undefined
             })
             if (!location) return
+            move.setDirectory(location.directory, location.directory !== location.project.directory)
             currentLocation.set(location)
             return
           }
@@ -962,10 +963,7 @@ export function Prompt(props: PromptProps) {
       const directory = await move.getDirectory()
       if (move.pending() && !directory) return false
       finishMoveProgress = Boolean(move.progress())
-      // The location context is where the next session is created: seeded by the home
-      // route (launch cwd, inherited session location, or picked project) and updated
-      // by /cd before a session exists.
-      const location = currentLocation.ref ?? data.location.default()
+      const location = data.location.default()
 
       const created = await client.api.session
         .create({
@@ -1168,19 +1166,6 @@ export function Prompt(props: PromptProps) {
     )
   }
 
-  function expandPastedText(extmarkId: number) {
-    const extmark = input.extmarks.get(extmarkId)
-    const ref = store.extmarkToPart.get(extmarkId)
-    if (!extmark || ref?.type !== "pasted") return false
-    const part = store.prompt.pasted[ref.index]
-    if (!part) return false
-
-    input.extmarks.delete(extmarkId)
-    input.setSelection(extmark.start, extmark.end)
-    input.insertText(part.text)
-    return true
-  }
-
   async function pasteInputText(text: string) {
     const normalizedText = text.replace(/\r\n/g, "\n").replace(/\r/g, "\n")
     const pastedContent = normalizedText.trim()
@@ -1204,15 +1189,6 @@ export function Prompt(props: PromptProps) {
 
     const lineCount = (pastedContent.match(/\n/g)?.length ?? 0) + 1
     if ((lineCount >= 3 || pastedContent.length > 150) && config.prompt?.paste !== "full") {
-      const extmark = input.extmarks.getAllForTypeId(promptPartTypeId).find((extmark) => {
-        const ref = store.extmarkToPart.get(extmark.id)
-        return (
-          (extmark.end === input.cursorOffset || extmark.end + 1 === input.cursorOffset) &&
-          ref?.type === "pasted" &&
-          store.prompt.pasted[ref.index]?.text === pastedContent
-        )
-      })
-      if (extmark && expandPastedText(extmark.id)) return
       pasteText(pastedContent, `[Pasted ~${lineCount} lines]`)
       return
     }
@@ -1314,28 +1290,16 @@ export function Prompt(props: PromptProps) {
 
   const placeholderText = createMemo(() => {
     if (props.showPlaceholder === false) return undefined
-    const value = (() => {
-      if (store.mode === "shell") {
-        if (!shell().length) return undefined
-        return `Run a command... "${shell()[store.placeholder % shell().length]}"`
-      }
-      if (!list().length) return undefined
-      return `Ask anything... "${list()[store.placeholder % list().length]}"`
-    })()
-    if (!value) return undefined
-    const width =
-      dimensions().width < 44
-        ? dimensions().width - 5
-        : Math.min(75, dimensions().width - 4) - 5
-    return Locale.takeWidth(value, Math.max(1, width)).trimEnd()
+    if (store.mode === "shell") {
+      if (!shell().length) return undefined
+      const example = shell()[store.placeholder % shell().length]
+      return `Run a command... "${example}"`
+    }
+    if (!list().length) return undefined
+    return `Ask anything... "${list()[store.placeholder % list().length]}"`
   })
   const locationLabel = createMemo(() => {
-    if (!props.sessionID) {
-      // No session yet: show where the next session will be created.
-      const directory = currentLocation.ref?.directory ?? data.location.default().directory
-      return abbreviateHome(directory, paths.home)
-    }
-    if (status() !== "idle") return
+    if (!props.sessionID || status() !== "idle") return
     const directory = data.session.get(props.sessionID)?.location.directory
     return directory ? abbreviateHome(directory, paths.home) : undefined
   })
@@ -1377,8 +1341,8 @@ export function Prompt(props: PromptProps) {
           }}
         >
           <box
-            paddingLeft={dimensions().width < 44 ? 1 : 2}
-            paddingRight={dimensions().width < 44 ? 1 : 2}
+            paddingLeft={2}
+            paddingRight={2}
             paddingTop={1}
             flexShrink={0}
             backgroundColor={promptBg()}
@@ -1454,48 +1418,33 @@ export function Prompt(props: PromptProps) {
                 }, 0)
               }}
               onMouseDown={(r: MouseEvent) => {
-                if (props.disabled || r.button !== 0) return
+                if (props.disabled) return
                 r.target?.focus()
-                const extmark = input.extmarks
-                  .getAtOffset(input.cursorOffset)
-                  .find((item) => store.extmarkToPart.get(item.id)?.type === "pasted")
-                if (!extmark || !expandPastedText(extmark.id)) return
-                r.preventDefault()
-                r.stopPropagation()
               }}
               focusedBackgroundColor="transparent"
               cursorColor={props.disabled ? theme.background.surface.offset : theme.text.default}
               syntaxStyle={syntax()}
             />
             <box flexDirection="row" flexShrink={0} paddingTop={1} gap={1} justifyContent="space-between">
-              <box flexDirection="row" gap={1} flexGrow={1} flexShrink={1} minWidth={0}>
+              <box flexDirection="row" gap={1}>
                 <Show when={agentLabel()} fallback={<box height={1} />}>
                   {(label) => (
                     <>
                       <text fg={fadeColor(highlight(), agentMetaAlpha())}>{label()}</text>
-                      <Show
-                        when={store.mode === "normal" && local.permission.mode === "auto" && dimensions().width >= 44}
-                      >
+                      <Show when={store.mode === "normal" && local.permission.mode === "auto"}>
                         <text fg={fadeColor(theme.text.subdued, agentMetaAlpha())}>auto</text>
                       </Show>
-                      <Show when={store.mode === "normal" && dimensions().width >= 28}>
-                        <box flexDirection="row" gap={1} flexGrow={1} flexShrink={1} minWidth={0}>
+                      <Show when={store.mode === "normal"}>
+                        <box flexDirection="row" gap={1}>
                           <text fg={fadeColor(theme.text.subdued, modelMetaAlpha())}>·</text>
                           <text
-                            flexShrink={1}
-                            minWidth={0}
-                            wrapMode="none"
-                            truncate
+                            flexShrink={0}
                             fg={fadeColor(leader() ? theme.text.subdued : theme.text.default, modelMetaAlpha())}
                           >
                             {local.model.parsed().model}
                           </text>
-                          <Show when={dimensions().width >= 50}>
-                            <text flexShrink={0} fg={fadeColor(theme.text.subdued, modelMetaAlpha())}>
-                              {currentProviderLabel()}
-                            </text>
-                          </Show>
-                          <Show when={showVariant() && dimensions().width >= 70}>
+                          <text fg={fadeColor(theme.text.subdued, modelMetaAlpha())}>{currentProviderLabel()}</text>
+                          <Show when={showVariant()}>
                             <text fg={fadeColor(theme.text.subdued, variantMetaAlpha())}>·</text>
                             <text>
                               <span

packages/tui/src/component/session-tabs.tsx

@@ -6,7 +6,6 @@ import { useSessionTabs } from "../context/session-tabs"
 import { useTheme, useThemes } from "../context/theme"
 import {
   adaptiveSessionTabLayout,
-  NEW_SESSION_TAB_TITLE,
   sessionTabComplete,
   seedSessionTabMotion,
   sessionTabOverflowWidth,
@@ -37,7 +36,7 @@ export type SessionTabsController = Pick<ContextController, "tabs" | "current" |
   status(sessionID: string): SessionTabsStatus
 }
 
-const NEW_SESSION_TAB: SessionTab = { sessionID: "new", title: NEW_SESSION_TAB_TITLE }
+const NEW_SESSION_TAB: SessionTab = { sessionID: "new", title: "New session" }
 
 export function SessionTabs(props: { controller?: SessionTabsController; animations?: boolean } = {}) {
   const tabs = props.controller ?? useSessionTabs()
@@ -210,11 +209,6 @@ export function SessionTabs(props: { controller?: SessionTabsController; animati
           createEffect((previous: string) => {
             const next = title()
             if (next === previous) return next
-            if (previous === NEW_SESSION_TAB_TITLE) {
-              setOutgoingTitle(undefined)
-              wipe.jump({ front: 1 })
-              return next
-            }
             setOutgoingTitle(previous)
             wipe.jump({ front: 0 })
             wipe.animate({ front: 1 })

packages/tui/src/config/v1/keybind.ts

@@ -87,9 +87,10 @@ export const Definitions = {
   session_move: keybind("none", "Move session"),
   session_new: keybind("<leader>n", "Create a new session"),
   session_list: keybind("<leader>l", "List all sessions"),
-  open_menu: keybind("ctrl+o", "Open recent sessions and projects"),
   session_tab_next: keybind("ctrl+tab,<leader>right,alt+shift+]", "Switch to next open tab"),
   session_tab_previous: keybind("ctrl+shift+tab,<leader>left,alt+shift+[", "Switch to previous open tab"),
+  session_tab_history_back: keybind("ctrl+o", "Go back in tab history"),
+  session_tab_history_forward: keybind("ctrl+i", "Go forward in tab history"),
   session_tab_next_unread: keybind("<leader>down", "Switch to next unread tab"),
   session_tab_previous_unread: keybind("<leader>up", "Switch to previous unread tab"),
   session_tab_close: keybind("<leader>w", "Close current tab"),
@@ -290,9 +291,10 @@ export const CommandMap = {
   session_move: "session.move",
   session_new: "session.new",
   session_list: "session.list",
-  open_menu: "open.menu",
   session_tab_next: "session.tab.next",
   session_tab_previous: "session.tab.previous",
+  session_tab_history_back: "session.tab.history.back",
+  session_tab_history_forward: "session.tab.history.forward",
   session_tab_next_unread: "session.tab.next_unread",
   session_tab_previous_unread: "session.tab.previous_unread",
   session_tab_close: "session.tab.close",

packages/tui/src/context/data.tsx

@@ -45,7 +45,6 @@ const messageIDFromEvent = (eventID: string) => eventID.replace(/^evt_/, "msg_")
 // server cannot recover their Location when settling them. Preserve the event Location
 // until MCP elicitations carry session ownership.
 export type FormWithLocation = FormInfo & { readonly location?: LocationRef }
-type ShellWithLocation = ShellInfo & { readonly location: LocationRef }
 
 type LocationData = {
   info?: LocationGetOutput
@@ -62,7 +61,7 @@ type LocationData = {
   websearch?: WebSearchProvider[]
   // Currently running shell commands for this location, keyed by shell id. Entries are removed
   // once the command exits or is deleted, so this only ever holds in-flight shells.
-  shell?: Record<string, ShellWithLocation>
+  shell?: Record<string, ShellInfo>
   skill?: SkillInfo[]
 }
 
@@ -189,6 +188,12 @@ export const { use: useData, provider: DataProvider } = createSimpleContext({
         index.set(item.id, messages.length)
         messages.push(item)
       },
+      reindex(messages: SessionMessageInfo[], index: Map<string, number>, start: number) {
+        for (let position = start; position < messages.length; position++) {
+          const item = messages[position]
+          if (item) index.set(item.id, position)
+        }
+      },
       activeAssistant(messages: SessionMessageInfo[]) {
         const item = messages.findLast((item) => item.type === "assistant" && !item.time.completed)
         return item?.type === "assistant" ? item : undefined
@@ -375,11 +380,8 @@ export const { use: useData, provider: DataProvider } = createSimpleContext({
             .catch((error) => console.error("Failed to load projected model switch message", error))
           break
         case "session.renamed":
-          // Preserve the live title when it races the session's initial read.
-          void result.session.sync(event.data.sessionID).then(() => {
-            if (store.session.info[event.data.sessionID])
-              setStore("session", "info", event.data.sessionID, "title", event.data.title)
-          })
+          if (store.session.info[event.data.sessionID])
+            setStore("session", "info", event.data.sessionID, "title", event.data.title)
           break
         case "session.moved":
           if (store.session.info[event.data.sessionID]) {
@@ -399,8 +401,7 @@ export const { use: useData, provider: DataProvider } = createSimpleContext({
             existing.time.created = event.created
             draft.splice(position, 1)
             draft.push(existing)
-            index.clear()
-            draft.forEach((message, indexValue) => index.set(message.id, indexValue))
+            message.reindex(draft, index, position)
           })
           setStore(
             "session",
@@ -442,6 +443,25 @@ export const { use: useData, provider: DataProvider } = createSimpleContext({
             )
           })
           break
+        case "session.input.withdrawn": {
+          removePending(event.data.sessionID, event.data.inputID)
+          if (store.session.input[event.data.sessionID]?.includes(event.data.inputID))
+            message.update(event.data.sessionID, (draft, index) => {
+              const position = index.get(event.data.inputID)
+              if (position === undefined) return
+              draft.splice(position, 1)
+              index.delete(event.data.inputID)
+              message.reindex(draft, index, position)
+            })
+          if (store.session.input[event.data.sessionID]?.includes(event.data.inputID))
+            setStore(
+              "session",
+              "input",
+              event.data.sessionID,
+              (store.session.input[event.data.sessionID] ?? []).filter((id) => id !== event.data.inputID),
+            )
+          break
+        }
         case "session.instructions.updated":
           const instructions = event.metadata?.instructions
           if (
@@ -855,10 +875,7 @@ export const { use: useData, provider: DataProvider } = createSimpleContext({
         case "shell.created":
           setStore("location", locationKey(event.location ?? defaultLocation()), (data) => ({
             ...data,
-            shell: {
-              ...data?.shell,
-              [event.data.info.id]: { ...event.data.info, location: event.location ?? defaultLocation() },
-            },
+            shell: { ...data?.shell, [event.data.info.id]: event.data.info },
           }))
           break
         case "shell.exited":
@@ -1113,18 +1130,7 @@ export const { use: useData, provider: DataProvider } = createSimpleContext({
             const key = locationKey(response.location)
             setStore("location", key, {
               ...store.location[key],
-              shell: Object.fromEntries(
-                response.data.map((info) => [
-                  info.id,
-                  {
-                    ...info,
-                    location: {
-                      directory: response.location.directory,
-                      workspaceID: response.location.workspaceID,
-                    },
-                  },
-                ]),
-              ),
+              shell: Object.fromEntries(response.data.map((info) => [info.id, info])),
             })
           })
         },