refactor(ai): unify prompt cache configuration

refactor(ai): promote prompt cache key
refactor(core): remove unused helpers (#39943 )
2026-08-01 16:03:19 -04:00 · 2026-07-31 17:52:32 -05:00 · 2026-07-31 16:59:24 -05:00 · 2026-07-31 16:17:14 -05:00 · 2026-07-31 21:08:33 +00:00 · 2026-07-31 16:35:05 -04:00
83 changed files with 2203 additions and 941 deletions
@@ -33,9 +33,10 @@ const model = OpenAI.configure({
 //
 //   - `generation`: common controls such as max tokens, temperature, topP/topK,
 //     penalties, seed, and stop sequences.
+//   - `cache`: provider-neutral prompt caching behavior and cache affinity.
 //   - `providerOptions`: namespaced provider-native behavior. For example,
-//     OpenAI cache keys and store behavior, Anthropic thinking, Gemini thinking
-//     config, or OpenRouter routing/reasoning.
+//     OpenAI store behavior, Anthropic thinking, Gemini thinking config, or
+//     OpenRouter routing/reasoning.
 //   - `http`: last-resort serializable overlays for final request body, headers,
 //     and query params. Prefer typed `providerOptions` when a field is stable.
 //
@@ -45,9 +46,7 @@ const request = LLM.request({
  system: "You are concise and practical.",
  prompt: "Tell me a joke",
  generation: { maxTokens: 80, temperature: 0.7 },
-  providerOptions: {
-    openai: { promptCacheKey: "tutorial-joke" },
-  },
+  cache: { mode: "auto", key: "tutorial-joke" },
 })

 // 3. `generate` sends the request and collects the event stream into one
@@ -10,16 +10,16 @@
 //
 // Manual `cache: CacheHint` placements on individual parts are preserved and
 // count against the four-breakpoint budget; auto only fills remaining slots.
-import { CacheHint, type CachePolicy, type CachePolicyObject } from "./schema/options"
+import { CacheHint, type CacheExplicit, type CachePolicy } from "./schema/options"
 import { LLMRequest, Message, ToolDefinition, type ContentPart } from "./schema/messages"

-const AUTO: CachePolicyObject = {
+const AUTO: Omit<CacheExplicit, "mode" | "key"> = {
  tools: true,
  system: true,
  messages: { tail: 1 },
 }

-const NONE: CachePolicyObject = {}
+const NONE: Omit<CacheExplicit, "mode" | "key"> = {}
 const BREAKPOINT_CAP = 4

 // Resolution rules:
@@ -29,8 +29,8 @@ const BREAKPOINT_CAP = 4
 //   - "auto"      → tools + first/last system + final message boundary.
 //   - "none"      → no auto placement; manual `CacheHint`s still flow.
 //   - object form → exactly what the caller asked for.
-const resolve = (policy: CachePolicy | undefined): CachePolicyObject => {
-  if (policy === undefined || policy === "auto") return AUTO
+const resolve = (policy: CachePolicy | undefined): Omit<CacheExplicit, "mode" | "key"> => {
+  if (policy === undefined || (policy !== "none" && policy.mode === "auto")) return AUTO
  if (policy === "none") return NONE
  return policy
 }
@@ -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"])
+const RESPECTS_INLINE_HINTS = new Set(["anthropic-messages", "bedrock-converse", "openrouter"])

 const makeHint = (ttlSeconds: number | undefined): CacheHint =>
  ttlSeconds !== undefined ? new CacheHint({ type: "ephemeral", ttlSeconds }) : new CacheHint({ type: "ephemeral" })
@@ -103,7 +103,7 @@ const markMessageAt = (

 const markMessages = (
  messages: ReadonlyArray<Message>,
-  strategy: NonNullable<CachePolicyObject["messages"]>,
+  strategy: NonNullable<CacheExplicit["messages"]>,
  hint: CacheHint,
  budget: Budget,
 ): ReadonlyArray<Message> => {
@@ -133,6 +133,11 @@ 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 !== "none" && request.cache.mode === "auto"))
+  )
+    return request
  const policy = resolve(request.cache)
  if (!policy.tools && !policy.system && !policy.messages) return request

@@ -3,6 +3,7 @@ import type { Content } from "@opencode-ai/schema/tool"
 import { HttpTransport } from "../route/transport"
 import { Protocol } from "../route/protocol"
 import {
+  cacheKey,
  LLMError,
  LLMEvent,
  Usage,
@@ -542,7 +543,7 @@ const lowerOptions = (request: LLMRequest) => {
  return {
    ...(options.instructions ? { instructions: options.instructions } : {}),
    ...(options.store !== undefined ? { store: options.store } : {}),
-    ...(options.promptCacheKey ? { prompt_cache_key: options.promptCacheKey } : {}),
+    ...(cacheKey(request.cache) ? { prompt_cache_key: cacheKey(request.cache) } : {}),
    ...(options.include ? { include: options.include } : {}),
    ...(options.reasoningEffort || options.reasoningSummary
      ? { reasoning: { effort: options.reasoningEffort, summary: options.reasoningSummary } }
@@ -11,6 +11,7 @@ import {
  Usage,
  type FinishReason,
  type FinishReasonDetails,
+  type CacheHint,
  type JsonSchema,
  type LLMRequest,
  type MediaPart,
@@ -38,6 +39,11 @@ 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,
@@ -47,6 +53,7 @@ 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>

@@ -61,7 +68,11 @@ const OpenAIChatAssistantToolCall = Schema.Struct({
 type OpenAIChatAssistantToolCall = Schema.Schema.Type<typeof OpenAIChatAssistantToolCall>

 const OpenAIChatUserContent = Schema.Union([
-  Schema.Struct({ type: Schema.Literal("text"), text: Schema.String }),
+  Schema.Struct({
+    type: Schema.Literal("text"),
+    text: Schema.String,
+    cache_control: Schema.optional(OpenAIChatCacheControl),
+  }),
  Schema.Struct({
    type: Schema.Literal("image_url"),
    image_url: Schema.Struct({ url: Schema.String }),
@@ -69,7 +80,10 @@ const OpenAIChatUserContent = Schema.Union([
 ])

 const OpenAIChatMessage = Schema.Union([
-  Schema.Struct({ role: Schema.Literal("system"), content: Schema.String }),
+  Schema.Struct({
+    role: Schema.Literal("system"),
+    content: Schema.Union([Schema.String, Schema.Array(OpenAIChatUserContent)]),
+  }),
  Schema.Struct({
    role: Schema.Literal("user"),
    content: Schema.Union([Schema.String, Schema.Array(OpenAIChatUserContent)]),
@@ -83,10 +97,16 @@ 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 }),
+  Schema.Struct({
+    role: Schema.Literal("tool"),
+    tool_call_id: Schema.String,
+    content: Schema.String,
+    cache_control: Schema.optional(OpenAIChatCacheControl),
+  }),
 ]).pipe(Schema.toTaggedUnion("role"))
 type OpenAIChatMessage = Schema.Schema.Type<typeof OpenAIChatMessage>

@@ -210,13 +230,20 @@ 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`.
-const lowerTool = (tool: ToolDefinition, inputSchema: JsonSchema): OpenAIChatTool => ({
+interface LoweringOptions {
+  readonly cacheControl?: (
+    cache: CacheHint | undefined,
+  ) => Schema.Schema.Type<typeof OpenAIChatCacheControl> | undefined
+}
+
+const lowerTool = (tool: ToolDefinition, inputSchema: JsonSchema, options: LoweringOptions): 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"]>) =>
@@ -258,11 +285,14 @@ 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) {
+const lowerUserMessage = Effect.fn("OpenAIChat.lowerUserMessage")(function* (
+  message: OpenAIChatRequestMessage,
+  options: LoweringOptions,
+) {
  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 })
+      content.push({ type: "text", text: part.text, cache_control: options.cacheControl?.(part.cache) })
      continue
    }
    if (part.type === "media") {
@@ -271,14 +301,18 @@ const lowerUserMessage = Effect.fn("OpenAIChat.lowerUserMessage")(function* (mes
    }
    return yield* ProviderShared.unsupportedContent("OpenAI Chat", "user", ["text", "media"])
  }
-  if (content.every((part) => part.type === "text"))
-    return { role: "user" as const, content: content.map((part) => part.text).join("") }
+  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(""),
+    }
  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[] = []
@@ -316,29 +350,44 @@ 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) {
+const lowerToolMessages = Effect.fn("OpenAIChat.lowerToolMessages")(function* (
+  message: OpenAIChatRequestMessage,
+  options: LoweringOptions,
+) {
  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) })
+      messages.push({
+        role: "tool",
+        tool_call_id: part.id,
+        content: ProviderShared.toolResultText(part),
+        cache_control: options.cacheControl?.(part.cache),
+      })
      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") })
+    messages.push({
+      role: "tool",
+      tool_call_id: part.id,
+      content: text.join("\n"),
+      cache_control: options.cacheControl?.(part.cache),
+    })
    const files = content.filter((item) => item.type === "file")
    images.push(
      ...(yield* Effect.forEach(files, (item) =>
@@ -352,15 +401,29 @@ const lowerToolMessages = Effect.fn("OpenAIChat.lowerToolMessages")(function* (m
 const lowerMessage = Effect.fn("OpenAIChat.lowerMessage")(function* (
  message: OpenAIChatRequestMessage,
  reasoningField?: string,
+  options: LoweringOptions = {},
 ) {
-  if (message.role === "user") return [yield* lowerUserMessage(message)]
-  if (message.role === "assistant") return [yield* lowerAssistantMessage(message, reasoningField)]
-  return (yield* lowerToolMessages(message)).messages
+  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
 })

-const lowerMessages = Effect.fn("OpenAIChat.lowerMessages")(function* (request: LLMRequest) {
+const lowerMessages = Effect.fn("OpenAIChat.lowerMessages")(function* (request: LLMRequest, options: LoweringOptions) {
  const system: OpenAIChatMessage[] =
-    request.system.length === 0 ? [] : [{ role: "system", content: ProviderShared.joinText(request.system) }]
+    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) }]
  const messages = [...system]
  const pendingImages: Array<Schema.Schema.Type<typeof OpenAIChatUserContent>> = []
  const flushImages = () => {
@@ -371,28 +434,53 @@ 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 }] })
+        messages.push({
+          role: "user",
+          content: [
+            ...pendingImages.splice(0),
+            { type: "text", text: part.text, cache_control: options.cacheControl?.(part.cache) },
+          ],
+        })
        continue
      }
      const previous = messages.at(-1)
      if (previous?.role === "user" && typeof previous.content === "string")
-        messages[messages.length - 1] = { role: "user", content: `${previous.content}\n${part.text}` }
+        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}` }
      else if (previous?.role === "user" && Array.isArray(previous.content))
        messages[messages.length - 1] = {
          role: "user",
-          content: [...previous.content, { type: "text", text: part.text }],
+          content: [
+            ...previous.content,
+            { type: "text", text: part.text, cache_control: options.cacheControl?.(part.cache) },
+          ],
        }
-      else messages.push({ role: "user", content: 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 },
+        )
      continue
    }
    if (message.role === "tool") {
-      const lowered = yield* lowerToolMessages(message)
+      const lowered = yield* lowerToolMessages(message, options)
      messages.push(...lowered.messages)
      pendingImages.push(...lowered.images)
      continue
    }
    flushImages()
-    messages.push(...(yield* lowerMessage(message, request.model.compatibility?.reasoningField)))
+    messages.push(...(yield* lowerMessage(message, request.model.compatibility?.reasoningField, options)))
  }
  flushImages()
  return messages
@@ -406,7 +494,10 @@ const lowerOptions = (request: LLMRequest) => {
  }
 }

-const fromRequest = Effect.fn("OpenAIChat.fromRequest")(function* (request: LLMRequest) {
+export const fromRequest = Effect.fn("OpenAIChat.fromRequest")(function* (
+  request: LLMRequest,
+  options: LoweringOptions = {},
+) {
  // `fromRequest` returns the provider body only. Endpoint, auth, framing,
  // validation, and HTTP execution are composed by `Route.make`.
  const reasoningField = request.model.compatibility?.reasoningField
@@ -419,12 +510,16 @@ const fromRequest = Effect.fn("OpenAIChat.fromRequest")(function* (request: LLMR
  const maxTokensField = request.model.compatibility?.maxTokensField ?? "max_tokens"
  return {
    model: request.model.id,
-    messages: yield* lowerMessages(request),
+    messages: yield* lowerMessages(request, options),
    tools:
      request.tools.length === 0
        ? undefined
        : request.tools.map((tool) =>
-            lowerTool(tool, ToolSchemaProjection.modelCompatibility(tool.inputSchema, toolSchemaCompatibility)),
+            lowerTool(
+              tool,
+              ToolSchemaProjection.modelCompatibility(tool.inputSchema, toolSchemaCompatibility),
+              options,
+            ),
          ),
    tool_choice: request.toolChoice ? yield* lowerToolChoice(request.toolChoice) : undefined,
    stream: true as const,
@@ -33,7 +33,6 @@ export const ServiceTierSchema = Schema.Literals(ServiceTiers)
 export interface Resolved {
  readonly instructions?: string
  readonly store?: boolean
-  readonly promptCacheKey?: string
  readonly reasoningEffort?: string
  readonly reasoningSummary?: "auto" | "concise" | "detailed"
  readonly include?: ReadonlyArray<ResponseIncludable>
@@ -50,7 +49,6 @@ export const resolve = (request: LLMRequest): Resolved => {
  return {
    instructions: typeof input?.instructions === "string" ? input.instructions : undefined,
    store: typeof input?.store === "boolean" ? input.store : undefined,
-    promptCacheKey: typeof input?.promptCacheKey === "string" ? input.promptCacheKey : undefined,
    reasoningEffort: typeof input?.reasoningEffort === "string" ? input.reasoningEffort : undefined,
    reasoningSummary:
      reasoningSummary === "auto" || reasoningSummary === "concise" || reasoningSummary === "detailed"
@@ -5,7 +5,6 @@ export interface OpenResponsesOptionsInput {
  readonly [key: string]: unknown
  readonly instructions?: string
  readonly store?: boolean
-  readonly promptCacheKey?: string
  readonly reasoningEffort?: ReasoningEffort
  readonly reasoningSummary?: "auto" | "concise" | "detailed"
  readonly include?: ReadonlyArray<ResponseIncludable>
@@ -17,7 +17,6 @@ const openAIProviderOptions = (options: OpenAIOptionsInput | undefined): Provide
  const openai = Object.fromEntries(
    definedEntries({
      store: options?.store,
-      promptCacheKey: options?.promptCacheKey,
      reasoningEffort: options?.reasoningEffort,
      reasoningSummary: options?.reasoningSummary,
      include: options?.include,
@@ -4,21 +4,71 @@ 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 ModelID, type ProviderOptions } from "../schema"
+import { cacheKey, ProviderID, type CacheHint, 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 usage?: boolean | Record<string, unknown>
-  readonly reasoning?: Record<string, unknown>
-  readonly promptCacheKey?: string
+  readonly debug?: Readonly<{ echo_upstream_body?: boolean }>
+  readonly models?: ReadonlyArray<string>
+  readonly plugins?: ReadonlyArray<OpenRouterPlugin>
+  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 & {
@@ -47,7 +97,7 @@ export const protocol = Protocol.make({
  body: {
    schema: OpenRouterBody,
    from: (request) =>
-      OpenAIChat.protocol.body.from(request).pipe(
+      OpenAIChat.fromRequest(request, { cacheControl: cacheControl() }).pipe(
        Effect.map((body) => {
          const sourceAssistants = request.messages.filter((message) => message.role === "assistant")
          let assistantIndex = 0
@@ -71,6 +121,7 @@ export const protocol = Protocol.make({
            ...body,
            messages,
            ...bodyOptions(request.providerOptions?.openrouter),
+            ...(cacheKey(request.cache) ? { prompt_cache_key: cacheKey(request.cache) } : {}),
          } as OpenRouterBody
        }),
      ),
@@ -78,16 +129,38 @@ 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 {
-    ...(openrouter.usage === true
+    ...options,
+    ...(usage === undefined || usage === true
      ? { usage: { include: true } }
-      : isRecord(openrouter.usage)
-        ? { usage: openrouter.usage }
-        : {}),
-    ...(isRecord(openrouter.reasoning) ? { reasoning: openrouter.reasoning } : {}),
-    ...(typeof openrouter.promptCacheKey === "string" ? { prompt_cache_key: openrouter.promptCacheKey } : {}),
+      : 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 } : {}),
  }
 }

@@ -124,6 +124,7 @@ 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" }),
@@ -168,6 +169,7 @@ 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" })
@@ -256,18 +256,17 @@ export class CacheHint extends Schema.Class<CacheHint>("LLM.CacheHint")({
  ttlSeconds: Schema.optional(Schema.Number),
 }) {}

-// Auto-placement policy for prompt caching. The protocol-neutral lowering step
-// reads this and injects `CacheHint`s at the configured boundaries; the
-// per-protocol body builders then translate those hints into wire markers as
-// usual. `"auto"` is the recommended default for agent loops — it places
-// breakpoints at the last tool definition, the first and last distinct system
-// parts, and the conversation tail. The rolling message breakpoint keeps a
-// prior cache entry within Anthropic/Bedrock's 20-block lookback during long
-// tool loops.
-//
-// Pass `"none"` to opt out entirely (the legacy behavior). Pass the granular
-// object form to override individual choices.
-export const CachePolicyObject = Schema.Struct({
+const CacheKey = { key: Schema.optional(Schema.String) }
+
+export const CacheAuto = Schema.Struct({
+  mode: Schema.Literal("auto"),
+  ...CacheKey,
+})
+export type CacheAuto = Schema.Schema.Type<typeof CacheAuto>
+
+export const CacheExplicit = Schema.Struct({
+  mode: Schema.Literal("explicit"),
+  ...CacheKey,
  tools: Schema.optional(Schema.Boolean),
  system: Schema.optional(Schema.Boolean),
  messages: Schema.optional(
@@ -279,7 +278,12 @@ export const CachePolicyObject = Schema.Struct({
  ),
  ttlSeconds: Schema.optional(Schema.Number),
 })
-export type CachePolicyObject = Schema.Schema.Type<typeof CachePolicyObject>
+export type CacheExplicit = Schema.Schema.Type<typeof CacheExplicit>

-export const CachePolicy = Schema.Union([Schema.Literal("auto"), Schema.Literal("none"), CachePolicyObject])
+// Omitted configuration uses automatic provider behavior and OpenCode's
+// automatic breakpoint placement where required. `"none"` sends no cache key
+// or explicit controls; providers may still cache implicitly.
+export const CachePolicy = Schema.Union([Schema.Literal("none"), CacheAuto, CacheExplicit])
 export type CachePolicy = Schema.Schema.Type<typeof CachePolicy>
+
+export const cacheKey = (cache: CachePolicy | undefined) => (cache && cache !== "none" ? cache.key : undefined)
@@ -64,7 +64,7 @@ describe("applyCachePolicy", () => {
            Message.assistant("assistant reply"),
            Message.user("latest user message"),
          ],
-          cache: "auto",
+          cache: { mode: "auto" },
        }),
      )

@@ -93,7 +93,7 @@ describe("applyCachePolicy", () => {
          model: openaiModel,
          system: "Sys",
          prompt: "hi",
-          cache: "auto",
+          cache: { mode: "auto" },
        }),
      )

@@ -112,7 +112,7 @@ describe("applyCachePolicy", () => {
          model: geminiModel,
          system: "Sys",
          prompt: "hi",
-          cache: "auto",
+          cache: { mode: "auto" },
        }),
      )

@@ -133,7 +133,7 @@ describe("applyCachePolicy", () => {
          ],
          tools: [{ name: "t1", description: "t1", inputSchema: { type: "object", properties: {} } }],
          messages: [Message.user("first user"), Message.assistant("reply"), Message.user("latest user")],
-          cache: "auto",
+          cache: { mode: "auto" },
        }),
      )

@@ -183,7 +183,7 @@ describe("applyCachePolicy", () => {
          system: "Sys",
          tools: [{ name: "t1", description: "t1", inputSchema: { type: "object", properties: {} } }],
          prompt: "hi",
-          cache: { tools: true },
+          cache: { mode: "explicit", tools: true },
        }),
      )

@@ -204,7 +204,7 @@ describe("applyCachePolicy", () => {
            { type: "text", text: "last system" },
          ],
          prompt: "hi",
-          cache: "auto",
+          cache: { mode: "auto" },
        }),
      )

@@ -233,7 +233,7 @@ describe("applyCachePolicy", () => {
        ],
        tools: [{ name: "t1", description: "t1", inputSchema: { type: "object", properties: {} } }],
        prompt: "hi",
-        cache: "auto",
+          cache: { mode: "auto" },
      })
      const applied = applyCachePolicy(request)
      expect(applied.tools[0]?.cache).toBeDefined()
@@ -267,7 +267,7 @@ describe("applyCachePolicy", () => {
          model: anthropicModel,
          system: "Sys",
          prompt: "hi",
-          cache: { system: true, ttlSeconds: 3600 },
+          cache: { mode: "explicit", system: true, ttlSeconds: 3600 },
        }),
      )

@@ -283,7 +283,7 @@ describe("applyCachePolicy", () => {
        LLM.request({
          model: anthropicModel,
          messages: [Message.user("u1"), Message.assistant("a1"), Message.user("u2"), Message.assistant("a2")],
-          cache: { messages: { tail: 2 } },
+          cache: { mode: "explicit", messages: { tail: 2 } },
        }),
      )

@@ -301,7 +301,7 @@ describe("applyCachePolicy", () => {
        LLM.request({
          model: anthropicModel,
          messages: [Message.user("u1"), Message.assistant("a1"), Message.user("u2")],
-          cache: { messages: "latest-assistant" },
+          cache: { mode: "explicit", messages: "latest-assistant" },
        }),
      )

@@ -3,11 +3,11 @@ import { CloudflareWorkersAI } from "../../src/providers"

 const model = CloudflareWorkersAI.configure({ accountId: "account", apiKey: "test" }).model("model")

-LLM.request({ model, prompt: "Hello", providerOptions: { openai: { promptCacheKey: "cache" } } })
+LLM.request({ model, prompt: "Hello", cache: { mode: "auto", key: "cache" } })

 LLM.request({
  model,
  prompt: "Hello",
-  // @ts-expect-error Cloudflare's OpenAI-compatible prompt cache key must be a string.
-  providerOptions: { openai: { promptCacheKey: 1 } },
+  // @ts-expect-error Prompt cache keys must be strings.
+  cache: { mode: "auto", key: 1 },
 })
@@ -5,6 +5,28 @@ 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",
@@ -20,7 +20,7 @@ const cacheRequest = LLM.request({
  system: LARGE_CACHEABLE_SYSTEM,
  prompt: "Say hi.",
  generation: { maxTokens: 16, temperature: 0 },
-  providerOptions: { openai: { promptCacheKey: "recorded-cache-test" } },
+  cache: { mode: "auto", key: "recorded-cache-test" },
 })

 const recorded = recordedTests({
@@ -680,9 +680,9 @@ describe("OpenAI Responses route", () => {
        LLM.request({
          model: OpenAI.configure({ baseURL: "https://api.openai.test/v1/", apiKey: "test" }).model("gpt-5.2"),
          prompt: "think",
+          cache: { mode: "auto", key: "session_123" },
          providerOptions: {
            openai: {
-              promptCacheKey: "session_123",
              reasoningEffort: "high",
              reasoningSummary: "auto",
              include: ["reasoning.encrypted_content"],
@@ -801,17 +801,16 @@ describe("OpenAI Responses route", () => {
    }),
  )

-  it.effect("request OpenAI provider options override route defaults", () =>
+  it.effect("maps the request prompt cache key", () =>
    Effect.gen(function* () {
      const prepared = yield* compileRequest(
        LLM.request({
          model: OpenAI.configure({
            baseURL: "https://api.openai.test/v1/",
            apiKey: "test",
-            providerOptions: { openai: { promptCacheKey: "model_cache" } },
          }).model("gpt-4.1-mini"),
          prompt: "no cache",
-          providerOptions: { openai: { promptCacheKey: "request_cache" } },
+          cache: { mode: "auto", key: "request_cache" },
        }),
      )

@@ -1,6 +1,6 @@
 import { describe, expect } from "bun:test"
 import { Effect } from "effect"
-import { LLM, Message } from "../../src"
+import { CacheHint, LLM, Message } from "../../src"
 import { LLMClient } from "../../src/route"
 import { compileRequest } from "../../src/route/client"
 import * as OpenRouter from "../../src/providers/openrouter"
@@ -27,10 +27,131 @@ 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: { mode: "explicit", 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: { mode: "explicit", 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(
@@ -41,11 +162,18 @@ describe("OpenRouter", () => {
              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"),
          prompt: "Think briefly.",
+          cache: { mode: "auto", key: "session_123" },
        }),
      )

@@ -53,10 +181,54 @@ 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")
@@ -104,6 +276,7 @@ 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([
              {
@@ -137,6 +310,7 @@ 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",
@@ -162,6 +336,7 @@ 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",
@@ -183,6 +358,7 @@ 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" })],
        }),
      )
@@ -118,6 +118,7 @@ export type SessionListOperation<E = never> = (input?: Endpoint5_0Input) => Effe

 export type Endpoint5_1Input = {
  readonly id?: Session.ID | undefined
+  readonly title?: string | undefined
  readonly agent?: Agent.ID | undefined
  readonly model?: Model.Ref | undefined
  readonly location?: Location.Ref | undefined
@@ -299,7 +299,13 @@ const Endpoint5_0 = (raw: RawClient["server.session"]) => (input?: Endpoint5_0In
 const Endpoint5_1 = (raw: RawClient["server.session"]) => (input?: Endpoint5_1Input) =>
  preserveEffect<Endpoint5_1Output>()(
    raw["session.create"]({
-      payload: { id: input?.["id"], agent: input?.["agent"], model: input?.["model"], location: input?.["location"] },
+      payload: {
+        id: input?.["id"],
+        title: input?.["title"],
+        agent: input?.["agent"],
+        model: input?.["model"],
+        location: input?.["location"],
+      },
    }).pipe(
      Effect.mapError(mapClientError),
      Effect.map((value) => value.data),
@@ -462,6 +462,7 @@ export function make(options: ClientOptions) {
            path: `/api/session`,
            body: {
              id: input?.["id"],
+              title: input?.["title"],
              agent: input?.["agent"],
              model: input?.["model"],
              location: input?.["location"],
@@ -2662,24 +2662,35 @@ export type SessionListOutput = SessionsResponse
 export type SessionCreateInput = {
  readonly id?: {
    readonly id?: string | null
+    readonly title?: string | null
    readonly agent?: string | null
    readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
  }["id"]
+  readonly title?: {
+    readonly id?: string | null
+    readonly title?: string | null
+    readonly agent?: string | null
+    readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
+    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
+  }["title"]
  readonly agent?: {
    readonly id?: string | null
+    readonly title?: string | null
    readonly agent?: string | null
    readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
  }["agent"]
  readonly model?: {
    readonly id?: string | null
+    readonly title?: string | null
    readonly agent?: string | null
    readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
  }["model"]
  readonly location?: {
    readonly id?: string | null
+    readonly title?: string | null
    readonly agent?: string | null
    readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
@@ -1,10 +1,13 @@
 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 {
@@ -20,14 +23,7 @@ export function map(packageName: string | undefined, settings: Readonly<Record<s
        },
      }
    case "@openrouter/ai-sdk-provider":
-      return {
-        package: "@opencode-ai/ai/providers/openrouter",
-        settings: {
-          ...baseSettings,
-          ...mapAPIKey(settings),
-          ...mapProviderOptions("openrouter", settings),
-        },
-      }
+      return mapOpenRouter(settings, baseSettings)
    case "@ai-sdk/xai":
      return {
        package: "@opencode-ai/ai/providers/xai",
@@ -69,22 +65,67 @@ function mapGoogleOptions(settings: Readonly<Record<string, unknown>>) {
  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",
+          "promptCacheKey",
+          "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 } }
 }
-
-function mapProviderOptions(namespace: string, 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 {}
-  return { providerOptions: { [namespace]: values } }
-}
@@ -299,8 +299,6 @@ export const locationLayer = Layer.effect(
  }),
 )

-export const defaultLayer = locationLayer
-
 function modelFromLanguage(info: Info, language: LanguageModelV3) {
  const packageName = Provider.packageName(info.package!)
  const projected = mapBodyToProviderOptions(info, packageName)
@@ -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 { ConfigAttachments } from "./config/attachments"
+import { ConfigMedia } from "./config/media"
 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",
  }),
-  attachments: ConfigAttachments.Info.pipe(Schema.optional).annotate({
-    description: "Attachment processing configuration",
+  media: ConfigMedia.Info.pipe(Schema.optional).annotate({
+    description: "Media processing configuration",
  }),
  tool_output: ConfigToolOutput.Info.pipe(Schema.optional).annotate({
    description: "Tool output truncation thresholds",
@@ -1,15 +1,15 @@
-export * as ConfigAttachments from "./attachments"
+export * as ConfigMedia from "./media"

 import { Schema } from "effect"
 import { PositiveInt } from "../schema"

-export class Image extends Schema.Class<Image>("Config.Attachments.Image")({
+export class Image extends Schema.Class<Image>("Config.Media.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.Attachments")({
+export class Info extends Schema.Class<Info>("Config.Media")({
  image: Image.pipe(Schema.optional),
 }) {}
@@ -1,4 +1,3 @@
-import { createProviderToolFactoryWithOutputSchema } from "@ai-sdk/provider-utils"
 import { z } from "zod/v4"

 export const imageGenerationArgsSchema = z
@@ -24,91 +23,3 @@ export const imageGenerationArgsSchema = z
 export const imageGenerationOutputSchema = z.object({
  result: z.string(),
 })
-
-type ImageGenerationArgs = {
-  /**
-   * Background type for the generated image. Default is 'auto'.
-   */
-  background?: "auto" | "opaque" | "transparent"
-
-  /**
-   * Input fidelity for the generated image. Default is 'low'.
-   */
-  inputFidelity?: "low" | "high"
-
-  /**
-   * Optional mask for inpainting.
-   * Contains image_url (string, optional) and file_id (string, optional).
-   */
-  inputImageMask?: {
-    /**
-     * File ID for the mask image.
-     */
-    fileId?: string
-
-    /**
-     * Base64-encoded mask image.
-     */
-    imageUrl?: string
-  }
-
-  /**
-   * The image generation model to use. Default: gpt-image-1.
-   */
-  model?: string
-
-  /**
-   * Moderation level for the generated image. Default: auto.
-   */
-  moderation?: "auto"
-
-  /**
-   * Compression level for the output image. Default: 100.
-   */
-  outputCompression?: number
-
-  /**
-   * The output format of the generated image. One of png, webp, or jpeg.
-   * Default: png
-   */
-  outputFormat?: "png" | "jpeg" | "webp"
-
-  /**
-   * Number of partial images to generate in streaming mode, from 0 (default value) to 3.
-   */
-  partialImages?: number
-
-  /**
-   * The quality of the generated image.
-   * One of low, medium, high, or auto. Default: auto.
-   */
-  quality?: "auto" | "low" | "medium" | "high"
-
-  /**
-   * The size of the generated image.
-   * One of 1024x1024, 1024x1536, 1536x1024, or auto.
-   * Default: auto.
-   */
-  size?: "auto" | "1024x1024" | "1024x1536" | "1536x1024"
-}
-
-const imageGenerationToolFactory = createProviderToolFactoryWithOutputSchema<
-  {},
-  {
-    /**
-     * The generated image encoded in base64.
-     */
-    result: string
-  },
-  ImageGenerationArgs
->({
-  id: "openai.image_generation",
-  inputSchema: z.object({}),
-  outputSchema: imageGenerationOutputSchema,
-})
-
-export const imageGeneration = (
-  args: ImageGenerationArgs = {}, // default
-) => {
-  return imageGenerationToolFactory(args)
-}
@@ -1,4 +1,3 @@
-import { createProviderToolFactoryWithOutputSchema } from "@ai-sdk/provider-utils"
 import { z } from "zod/v4"

 export const localShellInputSchema = z.object({
@@ -15,50 +14,3 @@ export const localShellInputSchema = z.object({
 export const localShellOutputSchema = z.object({
  output: z.string(),
 })
-
-export const localShell = createProviderToolFactoryWithOutputSchema<
-  {
-    /**
-     * Execute a shell command on the server.
-     */
-    action: {
-      type: "exec"
-
-      /**
-       * The command to run.
-       */
-      command: string[]
-
-      /**
-       * Optional timeout in milliseconds for the command.
-       */
-      timeoutMs?: number
-
-      /**
-       * Optional user to run the command as.
-       */
-      user?: string
-
-      /**
-       * Optional working directory to run the command in.
-       */
-      workingDirectory?: string
-
-      /**
-       * Environment variables to set for the command.
-       */
-      env?: Record<string, string>
-    }
-  },
-  {
-    /**
-     * The output of local shell tool call.
-     */
-    output: string
-  },
-  {}
->({
-  id: "openai.local_shell",
-  inputSchema: localShellInputSchema,
-  outputSchema: localShellOutputSchema,
-})
@@ -1,4 +1,3 @@
-import { createProviderToolFactory } from "@ai-sdk/provider-utils"
 import { z } from "zod/v4"

 // Args validation schema
@@ -39,65 +38,3 @@ export const webSearchPreviewArgsSchema = z.object({
    })
    .optional(),
 })
-
-export const webSearchPreview = createProviderToolFactory<
-  {
-    // Web search doesn't take input parameters - it's controlled by the prompt
-  },
-  {
-    /**
-     * Search context size to use for the web search.
-     * - high: Most comprehensive context, highest cost, slower response
-     * - medium: Balanced context, cost, and latency (default)
-     * - low: Least context, lowest cost, fastest response
-     */
-    searchContextSize?: "low" | "medium" | "high"
-
-    /**
-     * User location information to provide geographically relevant search results.
-     */
-    userLocation?: {
-      /**
-       * Type of location (always 'approximate')
-       */
-      type: "approximate"
-      /**
-       * Two-letter ISO country code (e.g., 'US', 'GB')
-       */
-      country?: string
-      /**
-       * City name (free text, e.g., 'Minneapolis')
-       */
-      city?: string
-      /**
-       * Region name (free text, e.g., 'Minnesota')
-       */
-      region?: string
-      /**
-       * IANA timezone (e.g., 'America/Chicago')
-       */
-      timezone?: string
-    }
-  }
->({
-  id: "openai.web_search_preview",
-  inputSchema: z.object({
-    action: z
-      .discriminatedUnion("type", [
-        z.object({
-          type: z.literal("search"),
-          query: z.string().nullish(),
-        }),
-        z.object({
-          type: z.literal("open_page"),
-          url: z.string(),
-        }),
-        z.object({
-          type: z.literal("find"),
-          url: z.string(),
-          pattern: z.string(),
-        }),
-      ])
-      .nullish(),
-  }),
-})
@@ -1,4 +1,3 @@
-import { createProviderToolFactory } from "@ai-sdk/provider-utils"
 import { z } from "zod/v4"

 export const webSearchArgsSchema = z.object({
@@ -20,83 +19,3 @@ export const webSearchArgsSchema = z.object({
    })
    .optional(),
 })
-
-export const webSearchToolFactory = createProviderToolFactory<
-  {
-    // Web search doesn't take input parameters - it's controlled by the prompt
-  },
-  {
-    /**
-     * Filters for the search.
-     */
-    filters?: {
-      /**
-       * Allowed domains for the search.
-       * If not provided, all domains are allowed.
-       * Subdomains of the provided domains are allowed as well.
-       */
-      allowedDomains?: string[]
-    }
-
-    /**
-     * Search context size to use for the web search.
-     * - high: Most comprehensive context, highest cost, slower response
-     * - medium: Balanced context, cost, and latency (default)
-     * - low: Least context, lowest cost, fastest response
-     */
-    searchContextSize?: "low" | "medium" | "high"
-
-    /**
-     * User location information to provide geographically relevant search results.
-     */
-    userLocation?: {
-      /**
-       * Type of location (always 'approximate')
-       */
-      type: "approximate"
-      /**
-       * Two-letter ISO country code (e.g., 'US', 'GB')
-       */
-      country?: string
-      /**
-       * City name (free text, e.g., 'Minneapolis')
-       */
-      city?: string
-      /**
-       * Region name (free text, e.g., 'Minnesota')
-       */
-      region?: string
-      /**
-       * IANA timezone (e.g., 'America/Chicago')
-       */
-      timezone?: string
-    }
-  }
->({
-  id: "openai.web_search",
-  inputSchema: z.object({
-    action: z
-      .discriminatedUnion("type", [
-        z.object({
-          type: z.literal("search"),
-          query: z.string().nullish(),
-        }),
-        z.object({
-          type: z.literal("open_page"),
-          url: z.string(),
-        }),
-        z.object({
-          type: z.literal("find"),
-          url: z.string(),
-          pattern: z.string(),
-        }),
-      ])
-      .nullish(),
-  }),
-})
-
-export const webSearch = (
-  args: Parameters<typeof webSearchToolFactory>[0] = {}, // default
-) => {
-  return webSearchToolFactory(args)
-}
@@ -61,7 +61,7 @@ const layer = Layer.effect(
      const image = Object.assign(
        {},
        ...(yield* config.entries()).flatMap((entry) =>
-          entry.type === "document" && entry.info.attachments?.image ? [entry.info.attachments.image] : [],
+          entry.type === "document" && entry.info.media?.image ? [entry.info.media.image] : [],
        ),
      )
      const normalize = yield* loadAdapter
@@ -96,9 +96,7 @@ 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
@@ -202,8 +200,8 @@ export const fromCatalogModel = (
    const settings = {
      ...(credential ? withoutNativeAuthSettings(mapped) : mapped),
      ...nativeCredentialSettings(specifier, credential),
-      headers: resolved.headers,
-      body: resolved.body,
+      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 },
    }
    return yield* Effect.try({
@@ -266,10 +264,7 @@ 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),
@@ -341,6 +341,7 @@ export const make = Effect.fn("PluginHost.make")(function* (plugin: import("../p
      create: (input) =>
        runtime.session.create({
          id: input?.id,
+          title: input?.title,
          agent: input?.agent,
          model: input?.model,
          location:
@@ -350,8 +351,10 @@ export const make = Effect.fn("PluginHost.make")(function* (plugin: import("../p
      prompt: runtime.session.prompt,
      generate: (input) => runtime.session.generate(input).pipe(Effect.map((text) => ({ text }))),
      command: runtime.session.command,
+      rename: runtime.session.rename,
      synthetic: runtime.session.synthetic,
      interrupt: (input) => runtime.session.interrupt(input.sessionID),
+      wait: (input) => runtime.session.wait(input.sessionID),
    },
  } satisfies Plugin.Context
 })
@@ -11,7 +11,17 @@ import { Session } from "../session"
 export interface Interface {
  readonly session: Pick<
    Session.Interface,
-    "get" | "create" | "messages" | "prompt" | "generate" | "command" | "resume" | "interrupt" | "synthetic"
+    | "get"
+    | "create"
+    | "messages"
+    | "prompt"
+    | "generate"
+    | "command"
+    | "rename"
+    | "resume"
+    | "interrupt"
+    | "synthetic"
+    | "wait"
  >
  readonly job: Pick<Job.Interface, "start" | "wait" | "block" | "background" | "cancel">
  readonly location: {
@@ -52,9 +62,11 @@ export const layerWithCell = (cell: Cell) =>
        prompt: (input) => require(cell, (runtime) => runtime.session.prompt(input)),
        generate: (input) => require(cell, (runtime) => runtime.session.generate(input)),
        command: (input) => require(cell, (runtime) => runtime.session.command(input)),
+        rename: (input) => require(cell, (runtime) => runtime.session.rename(input)),
        resume: (sessionID) => require(cell, (runtime) => runtime.session.resume(sessionID)),
        interrupt: (sessionID) => require(cell, (runtime) => runtime.session.interrupt(sessionID)),
        synthetic: (input) => require(cell, (runtime) => runtime.session.synthetic(input)),
+        wait: (sessionID) => require(cell, (runtime) => runtime.session.wait(sessionID)),
      },
      job: {
        start: (input) => require(cell, (runtime) => runtime.job.start(input)),
@@ -938,7 +938,7 @@ const materializeAttachment = Effect.fn("Session.materializeAttachment")(functio
      : resolved.bytes
  const normalized = yield* normalizeImageAttachment(
    input,
-    Base64.make(Buffer.from(content).toString("base64")),
+    Buffer.from(content).toString("base64"),
    mime,
    image,
  )
@@ -954,11 +954,11 @@ const materializeAttachment = Effect.fn("Session.materializeAttachment")(functio

 const normalizeImageAttachment = Effect.fn("Session.normalizeImageAttachment")(function* (
  input: PromptInput.FileAttachment,
-  data: Base64,
+  data: string,
  mime: string,
  image: Effect.Effect<Image.Interface>,
 ) {
-  if (!mime.startsWith("image/")) return { data, mime }
+  if (!mime.startsWith("image/")) return { data: Base64.make(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 }
@@ -10,6 +10,7 @@ import { llmClient } from "../effect/app-node-platform"
 import { SessionEvent } from "./event"
 import type { SessionMessage } from "./message"
 import { SessionModelHeaders } from "./model-headers"
+import { SessionPromptCacheKey } from "./prompt-cache-key"
 import { App } from "../app"
 import { SessionRunnerModel } from "./runner/model"
 import { SessionSchema } from "./schema"
@@ -257,6 +258,7 @@ const make = (dependencies: Dependencies) => {
      .stream(
        LLM.request({
          model: plan.model,
+          cache: { mode: "auto", key: SessionPromptCacheKey.make(plan.session.id) },
          http: { headers: SessionModelHeaders.make(plan.session, dependencies.app) },
          messages: [Message.user(plan.prompt)],
          tools: [],
@@ -11,6 +11,7 @@ import { SessionContext } from "./context"
 import { SessionGenerate } from "./generate"
 import { SessionHistory } from "./history"
 import { SessionModelHeaders } from "./model-headers"
+import { SessionPromptCacheKey } from "./prompt-cache-key"
 import { SessionRunnerModel } from "./runner/model"
 import PROMPT_DEFAULT from "./runner/prompt/base.txt"
 import { toLLMMessages } from "./runner/to-llm-message"
@@ -31,9 +32,6 @@ export const layer = Layer.effect(
        const model = yield* models.resolve(selection.session)
        const history = yield* SessionHistory.preview(database.db, selection.session.id, selection.instructions)
        const providerMetadataKey = model.model.route.providerMetadataKey ?? model.model.provider
-        const promptCacheKey = /^ses_[0-9a-f]{64}$/.test(selection.session.id)
-          ? selection.session.id.slice(4)
-          : selection.session.id
        const tools = selection.tools
        const toolDefinitions = tools.definitions
        const toolsByName = new Map(toolDefinitions.map((tool) => [tool.name, tool]))
@@ -71,7 +69,7 @@ export const layer = Layer.effect(
          LLM.request({
            model: model.model,
            http: { headers: SessionModelHeaders.make(selection.session, app) },
-            providerOptions: { openai: { promptCacheKey } },
+            cache: { mode: "auto", key: SessionPromptCacheKey.make(selection.session.id) },
            system: contextEvent.system,
            messages: contextEvent.messages,
            tools: hookedTools,
@@ -14,11 +14,17 @@ import { QuestionTool } from "../tool/plugin/question"
 import { Tool } from "../tool"
 import { SessionContext } from "./context"
 import { SessionModelHeaders } from "./model-headers"
+import { SessionPromptCacheKey } from "./prompt-cache-key"
 import { PromptCacheDiagnostics } from "./prompt-cache-diagnostics"
 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

@@ -94,6 +100,56 @@ 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
@@ -128,7 +184,6 @@ export const layer = Layer.effect(
      // The final Step keeps definitions available to protocols with native "none",
      // preserving their prompt cache prefix. Calls are still rejected at execution.
      const tools = input.context.tools
-      const promptCacheKey = /^ses_[0-9a-f]{64}$/.test(session.id) ? session.id.slice(4) : session.id
      const system = [agent.info.system ? agent.info.system : PROMPT_DEFAULT, input.context.initial]
        .filter((part) => part.length > 0)
        .map(SystemPart.make)
@@ -158,9 +213,9 @@ export const layer = Layer.effect(
        http: {
          headers: SessionModelHeaders.make(session, app),
        },
-        providerOptions: { openai: { promptCacheKey } },
+        cache: { mode: "auto", key: SessionPromptCacheKey.make(session.id) },
        system: contextEvent.system,
-        messages: unsupportedParts(contextEvent.messages, resolved.capabilities),
+        messages: boundImages(unsupportedParts(contextEvent.messages, resolved.capabilities)),
        tools: hookedTools,
        toolChoice: stepLimitReached ? "none" : undefined,
      })
@@ -0,0 +1,6 @@
+export * as SessionPromptCacheKey from "./prompt-cache-key"
+
+import { SessionSchema } from "./schema"
+
+export const make = (sessionID: SessionSchema.ID) =>
+  /^ses_[0-9a-f]{64}$/.test(sessionID) ? sessionID.slice(4) : sessionID
@@ -12,6 +12,7 @@ import { llmClient } from "../effect/app-node-platform"
 import { SessionEvent } from "./event"
 import { SessionHistory } from "./history"
 import { SessionModelHeaders } from "./model-headers"
+import { SessionPromptCacheKey } from "./prompt-cache-key"
 import { SessionRunnerModel } from "./runner/model"
 import { SessionSchema } from "./schema"
 import { SessionUsage } from "./usage"
@@ -80,6 +81,7 @@ const make = (dependencies: Dependencies) => {
      .stream(
        LLM.request({
          model: resolved.model,
+          cache: { mode: "auto", key: SessionPromptCacheKey.make(session.id) },
          http: { headers: SessionModelHeaders.make(session, dependencies.app) },
          system: agent.system,
          messages: [Message.user(firstUser.text)],
@@ -1,10 +0,0 @@
-import { createRequire } from "node:module"
-import path from "node:path"
-
-export namespace Module {
-  export function resolve(id: string, dir: string) {
-    try {
-      return createRequire(path.join(dir, "package.json")).resolve(id)
-    } catch {}
-  }
-}
@@ -12,12 +12,6 @@ export function getDirectory(path: string | undefined) {
  return parts.slice(0, parts.length - 1).join("/") + "/"
 }

-export function getFileExtension(path: string | undefined) {
-  if (!path) return ""
-  const parts = path.split(".")
-  return parts[parts.length - 1]
-}
-
 export function getFilenameTruncated(path: string | undefined, maxLength: number = 20) {
  const filename = getFilename(path)
  if (filename.length <= maxLength) return filename
@@ -63,7 +63,7 @@ export function migrate(info: typeof ConfigV1.Info.Type) {
    watcher: info.watcher,
    formatter: info.formatter,
    lsp: info.lsp,
-    attachments: info.attachment,
+    media: info.attachment,
    tool_output: info.tool_output,
    mcp: mcp(info),
    compaction: info.compaction && {
@@ -2,6 +2,40 @@ 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" },
+        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" },
+            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", {
@@ -69,7 +103,6 @@ describe("AISDKNative", () => {
        baseURL: "https://xai.example/v1",
        reasoningEffort: "custom",
        store: true,
-        promptCacheKey: "cache-key",
      }),
    ).toEqual({
      package: "@opencode-ai/ai/providers/xai",
@@ -80,7 +113,6 @@ describe("AISDKNative", () => {
          xai: {
            reasoningEffort: "custom",
            store: true,
-            promptCacheKey: "cache-key",
          },
        },
      },
@@ -803,7 +803,7 @@ describe("Config", () => {
                  custom: { command: ["custom-fmt", "$FILE"], extensions: [".foo"] },
                },
                lsp: { typescript: { disabled: true }, custom: { command: ["custom-lsp"], extensions: [".foo"] } },
-                attachments: {
+                media: {
                  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.attachments).toEqual({
+            expect(documents[0]?.info.media).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.attachments).toEqual({ image: { auto_resize: false, max_width: 1200 } })
+            expect(documents[0]?.info.media).toEqual({ image: { auto_resize: false, max_width: 1200 } })
            expect(documents[0]?.info.providers?.custom).toMatchObject({
              settings: { apiKey: "secret" },
              models: {
@@ -1,5 +1,6 @@
 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"
@@ -546,6 +547,37 @@ 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(
@@ -106,8 +106,10 @@ export function host(overrides: Overrides = {}): Plugin.Context {
      prompt: overrides.session?.prompt ?? (() => Effect.die("unused session.prompt")),
      generate: overrides.session?.generate ?? (() => Effect.die("unused session.generate")),
      command: overrides.session?.command ?? (() => Effect.die("unused session.command")),
+      rename: overrides.session?.rename ?? (() => Effect.die("unused session.rename")),
      synthetic: overrides.session?.synthetic ?? (() => Effect.die("unused session.synthetic")),
      interrupt: overrides.session?.interrupt ?? (() => Effect.die("unused session.interrupt")),
+      wait: overrides.session?.wait ?? (() => Effect.die("unused session.wait")),
    },
  }
 }
@@ -235,6 +235,7 @@ it.effect("manual compaction summarizes short context instead of no-op", () =>
    expect(Array.from(yield* Fiber.join(delta)).map((event) => event.data.text)).toEqual(["manual summary"])

    expect(requests).toHaveLength(1)
+    expect(requests[0]?.cache).toEqual({ mode: "auto", key: sessionID })
    expect(requests[0]?.http?.headers).toEqual({
      "x-session-affinity": sessionID,
      "X-Session-Id": sessionID,
@@ -287,7 +287,7 @@ it.effect("generates from fresh settled Session context without durable mutation
    expect(requests[0]?.system[0]?.text).toBe("Hooked system")
    expect(requests[0]?.system.map((part) => part.text)).toContain("Initial context")
    expect(requests[0]?.http?.headers).toMatchObject({ "X-Session-Id": sessionID })
-    expect(requests[0]?.providerOptions).toMatchObject({ openai: { promptCacheKey: sessionID } })
+    expect(requests[0]?.cache).toEqual({ mode: "auto", key: sessionID })
    const instructionUpdates = requests[0]?.messages.flatMap((message) =>
      message.role === "system"
        ? message.content.flatMap((content) => (content.type === "text" ? [content.text] : []))
@@ -1,6 +1,6 @@
 import { describe, expect, test } from "bun:test"
 import { Message, ToolResultPart } from "@opencode-ai/ai"
-import { unsupportedParts } from "@opencode-ai/core/session/model-request"
+import { boundImages, unsupportedParts } from "@opencode-ai/core/session/model-request"

 const capabilities = (input: string[]) => ({ tools: true, input, output: ["text"] })

@@ -62,3 +62,51 @@ 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" }],
+      },
+    })
+  })
+})
@@ -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[] = []
@@ -58,7 +58,10 @@ const locations = Layer.effect(
    () =>
      // Attachment admission only needs the location-scoped Image service.
      // oxlint-disable-next-line typescript-eslint/no-unsafe-type-assertion
-      imagePassthrough as unknown as Layer.Layer<LocationServices>,
+      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>,
  ),
 )
 const it = testEffect(
@@ -386,6 +389,35 @@ 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
@@ -3210,7 +3210,7 @@ describe("SessionRunnerLLM", () => {
      yield* stream.started

      expect(requests).toHaveLength(2)
-      expect(requests.map((request) => request.providerOptions?.openai?.promptCacheKey)).toEqual([
+      expect(requests.map((request) => (request.cache !== "none" ? request.cache?.key : undefined))).toEqual([
        sessionID,
        otherSessionID,
      ])
@@ -3241,7 +3241,7 @@ describe("SessionRunnerLLM", () => {
      yield* session.resume(longSessionID)
      yield* session.resume(otherLongSessionID)

-      const keys = requests.map((request) => request.providerOptions?.openai?.promptCacheKey)
+      const keys = requests.map((request) => (request.cache !== "none" ? request.cache?.key : undefined))
      expect(keys).toEqual([longSessionID.slice(4), otherLongSessionID.slice(4)])
      expect(keys.every((key) => typeof key === "string" && key.length === 64)).toBe(true)
      expect(keys[0]).not.toBe(keys[1])
@@ -153,6 +153,7 @@ it.effect("generates a title from the sole user message and renames the session"
    yield* title.generateForFirstPrompt(sessionID)

    expect(requests).toHaveLength(1)
+    expect(requests[0]?.cache).toEqual({ mode: "auto", key: sessionID })
    expect(requests[0]?.http?.headers).toEqual({
      "x-session-affinity": sessionID,
      "X-Session-Id": sessionID,
@@ -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 { ConfigAttachments } from "@opencode-ai/core/config/attachments"
+import { ConfigMedia } from "@opencode-ai/core/config/media"
 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({
-            attachments: new ConfigAttachments.Info({
-              image: new ConfigAttachments.Image({ auto_resize: false, max_width: 4 }),
+            media: new ConfigMedia.Info({
+              image: new ConfigMedia.Image({ auto_resize: false, max_width: 4 }),
            }),
          }),
        }),
@@ -475,7 +475,7 @@ describe("ReadTool", () => {
        new Config.Document({
          type: "document",
          info: new Config.Info({
-            attachments: new ConfigAttachments.Info({ image: new ConfigAttachments.Image({ max_width: 4 }) }),
+            media: new ConfigMedia.Info({ image: new ConfigMedia.Image({ max_width: 4 }) }),
          }),
        }),
      ])
@@ -514,8 +514,8 @@ describe("ReadTool", () => {
        new Config.Document({
          type: "document",
          info: new Config.Info({
-            attachments: new ConfigAttachments.Info({
-              image: new ConfigAttachments.Image({ max_base64_bytes: 1 }),
+            media: new ConfigMedia.Info({
+              image: new ConfigMedia.Image({ max_base64_bytes: 1 }),
            }),
          }),
        }),
@@ -29,7 +29,7 @@ export interface SessionHooks {

 export type SessionDomain = Pick<
  SessionApi<unknown>,
-  "create" | "get" | "prompt" | "generate" | "command" | "synthetic" | "interrupt"
+  "create" | "get" | "prompt" | "generate" | "command" | "synthetic" | "interrupt" | "rename" | "wait"
 > & {
  readonly hook: Hooks<SessionHooks>
 }
@@ -26,12 +26,27 @@ import type { JSX } from "@opentui/solid"
 import type { Store } from "solid-js/store"

 export interface Storage {
+  /**
+   * Durable JSON state: persisted to disk, survives hot reloads and TUI
+   * restarts, and stays live-synced across running TUI instances.
+   */
  store<Value extends object>(
    key: string,
    options: {
      readonly initial: Value
    },
  ): readonly [Store<Value>, (mutation: (draft: Value) => void) => Promise<void>]
+  /**
+   * Ephemeral in-memory state: survives plugin hot reloads (old and new
+   * generations share the same live store) and is gone when the TUI exits.
+   * Updates are synchronous and values need not be JSON-serializable.
+   */
+  memory<Value extends object>(
+    key: string,
+    options: {
+      readonly initial: Value
+    },
+  ): readonly [Store<Value>, (mutation: (draft: Value) => void) => void]
 }

 interface LocationCollection<Value> {
@@ -136,6 +151,9 @@ export interface SlotMap {
    readonly sessionID?: string
    readonly mode: "normal" | "shell"
  }
+  readonly "session.composer.top": {
+    readonly sessionID: string
+  }
  readonly "sidebar.content": {
    readonly sessionID: string
  }
@@ -149,6 +149,7 @@ export const makeSessionGroup = <I extends HttpApiMiddleware.AnyId, S>(sessionLo
      HttpApiEndpoint.post("session.create", "/api/session", {
        payload: Schema.Struct({
          id: Session.ID.pipe(Schema.optional),
+          title: Schema.String.pipe(Schema.optional),
          agent: Agent.ID.pipe(Schema.optional),
          model: Model.Ref.pipe(Schema.optional),
          location: Location.Ref.pipe(Schema.optional),
@@ -77,6 +77,7 @@ export const SessionHandler = HttpApiBuilder.group(Api, "server.session", (handl
            data: yield* session
              .create({
                id: ctx.payload.id,
+                title: ctx.payload.title,
                agent: ctx.payload.agent,
                model: ctx.payload.model,
                location: ctx.payload.location ?? { directory: AbsolutePath.make(process.cwd()) },
@@ -82,7 +82,8 @@ import { ArgsProvider, useArgs, type Args } from "./context/args"
 import open from "open"
 import { PromptRefProvider, usePromptRef } from "./context/prompt"
 import { Config, ConfigProvider, useConfig } from "./config"
-import { PluginProvider, PluginRoute, PluginSlot, usePlugin, type PackageResolver } from "./plugin/context"
+import { PluginProvider, usePlugin, type PackageResolver } from "./plugin/context"
+import { PluginRoute, PluginSlot } from "./plugin/render"
 import { CommandPaletteDialog } from "./component/command-palette"
 import { COMMAND_PALETTE_COMMAND, Keymap, type KeymapCommand } from "./context/keymap"

@@ -1,11 +1,13 @@
 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 { logo } from "../logo"
+import { go, 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)
@@ -49,14 +51,29 @@ export function Logo() {

  return (
    <box>
-      <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>
+      {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>
+      )}
    </box>
  )
 }
@@ -0,0 +1,83 @@
+/** @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>
+  )
+}
@@ -53,7 +53,7 @@ import { useData } from "../../context/data"
 import { useLocation } from "../../context/location"
 import { Keymap, type KeymapCommand } from "../../context/keymap"
 import { abbreviateHome } from "../../runtime"
-import { PluginSlot } from "../../plugin/context"
+import { PluginSlot } from "../../plugin/render"

 registerOpencodeSpinner()

@@ -1168,6 +1168,19 @@ 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()
@@ -1191,6 +1204,15 @@ 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
    }
@@ -1292,13 +1314,20 @@ export function Prompt(props: PromptProps) {

  const placeholderText = createMemo(() => {
    if (props.showPlaceholder === false) return undefined
-    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 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()
  })
  const locationLabel = createMemo(() => {
    if (!props.sessionID) {
@@ -1348,8 +1377,8 @@ export function Prompt(props: PromptProps) {
          }}
        >
          <box
-            paddingLeft={2}
-            paddingRight={2}
+            paddingLeft={dimensions().width < 44 ? 1 : 2}
+            paddingRight={dimensions().width < 44 ? 1 : 2}
            paddingTop={1}
            flexShrink={0}
            backgroundColor={promptBg()}
@@ -1425,33 +1454,48 @@ export function Prompt(props: PromptProps) {
                }, 0)
              }}
              onMouseDown={(r: MouseEvent) => {
-                if (props.disabled) return
+                if (props.disabled || r.button !== 0) 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}>
+              <box flexDirection="row" gap={1} flexGrow={1} flexShrink={1} minWidth={0}>
                <Show when={agentLabel()} fallback={<box height={1} />}>
                  {(label) => (
                    <>
                      <text fg={fadeColor(highlight(), agentMetaAlpha())}>{label()}</text>
-                      <Show when={store.mode === "normal" && local.permission.mode === "auto"}>
+                      <Show
+                        when={store.mode === "normal" && local.permission.mode === "auto" && dimensions().width >= 44}
+                      >
                        <text fg={fadeColor(theme.text.subdued, agentMetaAlpha())}>auto</text>
                      </Show>
-                      <Show when={store.mode === "normal"}>
-                        <box flexDirection="row" gap={1}>
+                      <Show when={store.mode === "normal" && dimensions().width >= 28}>
+                        <box flexDirection="row" gap={1} flexGrow={1} flexShrink={1} minWidth={0}>
                          <text fg={fadeColor(theme.text.subdued, modelMetaAlpha())}>·</text>
                          <text
-                            flexShrink={0}
+                            flexShrink={1}
+                            minWidth={0}
+                            wrapMode="none"
+                            truncate
                            fg={fadeColor(leader() ? theme.text.subdued : theme.text.default, modelMetaAlpha())}
                          >
                            {local.model.parsed().model}
                          </text>
-                          <text fg={fadeColor(theme.text.subdued, modelMetaAlpha())}>{currentProviderLabel()}</text>
-                          <Show when={showVariant()}>
+                          <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, variantMetaAlpha())}>·</text>
                            <text>
                              <span
@@ -1,5 +1,5 @@
 import { batch, createContext, onCleanup, useContext, type ParentProps } from "solid-js"
-import { createStore, reconcile, type Store } from "solid-js/store"
+import { createStore, produce, reconcile, type Store } from "solid-js/store"
 import path from "path"
 import { mkdirSync, readFileSync, watch } from "fs"
 import { Flock } from "@opencode-ai/util/flock"
@@ -13,12 +13,20 @@ type Options<Value extends object> = {
 }

 type Entry<Value extends object> = readonly [Store<Value>, (mutation: (draft: Value) => void) => Promise<void>]
+type MemoryEntry<Value extends object> = readonly [Store<Value>, (mutation: (draft: Value) => void) => void]

 export interface Storage {
  store<Value extends object>(
    key: string,
    options: Options<Value>,
  ): readonly [Store<Value>, (mutation: (draft: Value) => void) => Promise<void>]
+  /**
+   * Ephemeral in-process state. Entries are memoized here, above consumer
+   * lifecycles, so the same live store survives plugin hot reloads; it is
+   * gone when the TUI exits. Updates are synchronous and values need not be
+   * JSON-serializable.
+   */
+  memory<Value extends object>(key: string, options: { readonly initial: Value }): MemoryEntry<Value>
 }

 function clone<Value extends object>(value: Value) {
@@ -37,6 +45,7 @@ function segment(value: string) {

 function createStorage(root: string, channel: string) {
  const entries = new Map<string, { readonly value: Entry<object>; readonly reload: () => void }>()
+  const memories = new Map<string, MemoryEntry<object>>()
  const directory = path.join(root, segment(channel), "tui")
  const locks = path.join(root, segment(channel), "locks")
  mkdirSync(directory, { recursive: true })
@@ -73,6 +82,14 @@ function createStorage(root: string, channel: string) {
      entries.set(file, { value: entry as Entry<object>, reload })
      return entry
    },
+    memory<Value extends object>(key: string, options: { readonly initial: Value }) {
+      const existing = memories.get(key)
+      if (existing) return existing as MemoryEntry<Value>
+      const [store, setStore] = createStore(options.initial)
+      const entry = [store, (mutation: (draft: Value) => void) => setStore(produce(mutation))] as const
+      memories.set(key, entry as MemoryEntry<object>)
+      return entry
+    },
  }

  const watcher = watch(directory, () => entries.forEach((entry) => entry.reload()))
@@ -1,23 +1,6 @@
 import { Plugin } from "@opencode-ai/plugin/tui"
 import { createMemo, Match, Show, Switch } from "solid-js"
 import { useTerminalDimensions } from "@opentui/solid"
-import { stringWidth } from "../../util/string-width"
-import { FadeFilePath } from "../../ui/fade-file-path"
-
-function Directory(props: { context: Plugin.Context; maxWidth: number }) {
-  const directory = createMemo(() =>
-    props.context.location ? props.context.ui.format.path(props.context.location.directory) : undefined,
-  )
-
-  return (
-    <FadeFilePath
-      value={directory()}
-      maxWidth={props.maxWidth}
-      fg={props.context.theme.text.subdued}
-      bg={props.context.theme.background.default}
-    />
-  )
-}

 function Mcp(props: { context: Plugin.Context }) {
  const list = createMemo(() => props.context.data.location.mcp.server.list(props.context.location) ?? [])
@@ -53,34 +36,26 @@ function Mcp(props: { context: Plugin.Context }) {

 function View(props: { context: Plugin.Context }) {
  const dimensions = useTerminalDimensions()
-  const mcpWidth = createMemo(() => {
-    const list = props.context.data.location.mcp.server.list(props.context.location) ?? []
-    if (list.length === 0) return 0
-    const count = list.filter((item) => item.status.status === "connected").length
-    return stringWidth(`⊙ ${count} MCP /status`) + 2
-  })

  return (
-    <box
-      width="100%"
-      paddingTop={1}
-      paddingBottom={1}
-      paddingLeft={2}
-      paddingRight={2}
-      flexDirection="row"
-      flexShrink={0}
-      gap={2}
-    >
-      <Directory
-        context={props.context}
-        maxWidth={Math.max(2, dimensions().width - 8 - stringWidth(props.context.app.version) - mcpWidth())}
-      />
-      <Mcp context={props.context} />
-      <box flexGrow={1} />
-      <box flexShrink={0}>
-        <text fg={props.context.theme.text.subdued}>{props.context.app.version}</text>
+    <Show when={dimensions().height >= 12 && dimensions().width >= 44}>
+      <box
+        width="100%"
+        paddingTop={dimensions().height < 16 ? 0 : 1}
+        paddingBottom={dimensions().height < 16 ? 0 : 1}
+        paddingLeft={2}
+        paddingRight={2}
+        flexDirection="row"
+        flexShrink={0}
+        gap={2}
+      >
+        <Mcp context={props.context} />
+        <box flexGrow={1} />
+        <box flexShrink={0}>
+          <text fg={props.context.theme.text.subdued}>{props.context.app.version}</text>
+        </box>
      </box>
-    </box>
+    </Show>
  )
 }

@@ -1,6 +1,7 @@
 import { Plugin } from "@opencode-ai/plugin/tui"
 import { createMemo, Match, Show, Switch } from "solid-js"
 import { contextUsage, formatContextUsage } from "../../util/session"
+import { useTerminalDimensions } from "@opentui/solid"

 const money = new Intl.NumberFormat("en-US", {
  style: "currency",
@@ -8,6 +9,7 @@ const money = new Intl.NumberFormat("en-US", {
 })

 export function PromptFooter(props: { context: Plugin.Context; sessionID?: string; mode: "normal" | "shell" }) {
+  const dimensions = useTerminalDimensions()
  const activeSubagents = createMemo(() => {
    if (!props.sessionID) return 0
    return props.context.data.session
@@ -60,19 +62,24 @@ export function PromptFooter(props: { context: Plugin.Context; sessionID?: strin
              <Show when={status().length > 0}>{status().join(" · ")}</Show>
            </text>
          </Match>
-          <Match when={true}>
+          <Match when={dimensions().width >= 44}>
            <text fg={props.context.theme.text.default} flexShrink={0}>
              {shortcut("agent.cycle")} <span style={{ fg: props.context.theme.text.subdued }}>agents</span>
            </text>
          </Match>
        </Switch>
-        <text fg={props.context.theme.text.default} flexShrink={0}>
-          {shortcut("command.palette.show")} <span style={{ fg: props.context.theme.text.subdued }}>commands</span>
-        </text>
+        <Show when={dimensions().width >= 44}>
+          <text fg={props.context.theme.text.default} flexShrink={0}>
+            {shortcut("command.palette.show")} <span style={{ fg: props.context.theme.text.subdued }}>commands</span>
+          </text>
+        </Show>
      </Match>
      <Match when={props.mode === "shell"}>
        <text fg={props.context.theme.text.default} flexShrink={0}>
-          esc <span style={{ fg: props.context.theme.text.subdued }}>exit shell mode</span>
+          esc{" "}
+          <span style={{ fg: props.context.theme.text.subdued }}>
+            {dimensions().width < 44 ? "shell" : "exit shell mode"}
+          </span>
        </text>
      </Match>
    </Switch>
@@ -2,13 +2,7 @@
 import type { FileDiffInfo } from "@opencode-ai/client"
 import { Plugin } from "@opencode-ai/plugin/tui"
 import type { KeymapCommand, Route } from "@opencode-ai/plugin/tui/context"
-import {
-  TextAttributes,
-  type BorderSides,
-  type BoxRenderable,
-  type DiffRenderable,
-  type ScrollBoxRenderable,
-} from "@opentui/core"
+import { TextAttributes, type BorderSides, type BoxRenderable, type ScrollBoxRenderable } from "@opentui/core"
 import { LANGUAGE_EXTENSIONS } from "../../util/filetype"
 import { useTerminalDimensions } from "@opentui/solid"
 import path from "path"
@@ -19,6 +13,7 @@ import { DialogSelect } from "../../ui/dialog-select"
 import { getScrollAcceleration } from "../../util/scroll"
 import { useConfig } from "../../config"
 import { useThemes } from "../../context/theme"
+import { PatchDiff, type PatchDiffRef } from "../../component/patch-diff"
 import {
  allExpandedFileTreeDirectories,
  buildFileTree,
@@ -154,7 +149,7 @@ function DiffViewer(props: { context: Plugin.Context }) {
  const helpShortcut = shortcut("diff.help")
  let scroll: ScrollBoxRenderable | undefined
  const patchNodeByFileIndex = new Map<number, BoxRenderable>()
-  const diffNodeByFileIndex = new Map<number, DiffRenderable>()
+  const patchDiffByFileIndex = new Map<number, PatchDiffRef>()
  const [selectedHunk, setSelectedHunk] = createSignal<SelectedHunk | undefined>()
  const [pendingPatchScrollFileIndex, setPendingPatchScrollFileIndex] = createSignal<number | undefined>()
  const [patchFillerHeight, setPatchFillerHeight] = createSignal(0)
@@ -270,17 +265,16 @@ function DiffViewer(props: { context: Plugin.Context }) {
    if (!patchScroll) return
    const hunks = visiblePatchFiles()
      .flatMap((entry) => {
-        const node = diffNodeByFileIndex.get(entry.fileIndex)
-        if (!node || node.isDestroyed) return []
-        const contentY = patchScroll.scrollTop + node.y - patchScroll.viewport.y
-        return node.diff
-          .split("\n")
-          .flatMap((line, row) => (line.startsWith("@@") ? [row] : []))
-          .map((row, hunkIndex) => ({
-            fileIndex: entry.fileIndex,
-            hunkIndex,
-            contentY: contentY + row,
-          }))
+        return (
+          patchDiffByFileIndex
+            .get(entry.fileIndex)
+            ?.hunks()
+            .map((node, hunkIndex) => ({
+              fileIndex: entry.fileIndex,
+              hunkIndex,
+              contentY: patchScroll.scrollTop + node.y - patchScroll.viewport.y - (hunkIndex > 0 ? 1 : 0),
+            })) ?? []
+        )
      })
      .sort((left, right) => left.contentY - right.contentY)
    const selected = selectedHunk()
@@ -831,9 +825,10 @@ function DiffViewer(props: { context: Plugin.Context }) {
                            >
                              {(patch) => (
                                <box border={patchLeftBorder()} borderColor={theme.border.default}>
-                                  <diff
-                                    ref={(element: DiffRenderable) => diffNodeByFileIndex.set(entry.fileIndex, element)}
+                                  <PatchDiff
+                                    ref={(component) => patchDiffByFileIndex.set(entry.fileIndex, component)}
                                    diff={patch()}
+                                    hunkFg={reviewed() ? theme.text.subdued : theme.diff.text.hunkHeader}
                                    view={view()}
                                    filetype={reviewed() ? PLAIN_TEXT_FILETYPE : filetype(entry.file.file)}
                                    syntaxStyle={currentSyntax()}
@@ -847,9 +842,15 @@ function DiffViewer(props: { context: Plugin.Context }) {
                                    removedBg={
                                      reviewed() ? theme.background.surface.overlay : theme.diff.background.removed
                                    }
+                                    contextBg={
+                                      reviewed() ? theme.background.surface.overlay : theme.diff.background.context
+                                    }
                                    addedSignColor={reviewed() ? theme.text.subdued : theme.diff.highlight.added}
                                    removedSignColor={reviewed() ? theme.text.subdued : theme.diff.highlight.removed}
                                    lineNumberFg={theme.diff.lineNumber.text}
+                                    lineNumberBg={
+                                      reviewed() ? theme.background.surface.overlay : theme.diff.background.context
+                                    }
                                    addedLineNumberBg={
                                      reviewed()
                                        ? theme.background.surface.overlay
@@ -32,6 +32,7 @@ import { footerWidthPolicy } from "./footer.width"
 import { toolFiletype } from "./tool"
 import { transparent, type RunBlockTheme, type RunFooterTheme } from "./theme"
 import type { MiniPermissionRequest, PermissionReply } from "./types"
+import { PatchDiff } from "../component/patch-diff"

 function buttons(
  list: PermissionOption[],
@@ -405,8 +406,9 @@ export function RunPermissionBody(props: {
                      </Show>
                    }
                  >
-                    <diff
+                    <PatchDiff
                      diff={info().diff!}
+                      hunkFg={props.block.diffLineNumber}
                      view="unified"
                      filetype={ft()}
                      syntaxStyle={props.block.syntax}
@@ -13,6 +13,7 @@ import { entryColor, entryLook, entrySyntax } from "./scrollback.shared"
 import { toolFiletype, toolStructuredFinal } from "./tool"
 import { RUN_THEME_FALLBACK, transparent, type RunTheme } from "./theme"
 import type { EntryLayout, RunEntryBody, ScrollbackOptions, StreamCommit, TurnSummary } from "./types"
+import { PatchDiff } from "../component/patch-diff"

 export function entryGroupKey(commit: StreamCommit): string | undefined {
  if (!commit.partID) {
@@ -178,8 +179,9 @@ export function RunEntryContent(props: {
              </text>
              {item.diff.trim() ? (
                <box width="100%" paddingLeft={1}>
-                  <diff
+                  <PatchDiff
                    diff={item.diff}
+                    hunkFg={theme().block.diffLineNumber}
                    view="unified"
                    filetype={toolFiletype(item.file)}
                    syntaxStyle={syntax()}
@@ -0,0 +1,274 @@
+import { PluginContextProvider } from "@opencode-ai/plugin/tui"
+import type { JSX } from "solid-js"
+import type { Context, Dialog, Page, Slot, SlotMap, Toast } from "@opencode-ai/plugin/tui/context"
+import { useRenderer } from "@opentui/solid"
+import { useClient } from "../context/client"
+import { useData } from "../context/data"
+import { Keymap } from "../context/keymap"
+import { useRoute } from "../context/route"
+import { useTuiApp, useTuiPaths } from "../context/runtime"
+import { useLocation } from "../context/location"
+import { useThemes } from "../context/theme"
+import { DialogAlert } from "../ui/dialog-alert"
+import { DialogConfirm } from "../ui/dialog-confirm"
+import { DialogPrompt } from "../ui/dialog-prompt"
+import { DialogSelect } from "../ui/dialog-select"
+import { useDialog } from "../ui/dialog"
+import { useToast } from "../ui/toast"
+import { useAttention } from "../context/attention"
+import { useStorage } from "../context/storage"
+import { useSessionTabs } from "../context/session-tabs"
+import { abbreviateHome } from "../util/path-format"
+
+export type Dispose = () => Promise<void>
+
+// The provider's registration store, narrowed to what a plugin context needs:
+// route/slot registration lands there, but ordering and lifecycle stay owned
+// by the provider.
+export type Registry = {
+  has(kind: "routes" | "slots", name: string): boolean
+  set(kind: "routes", name: string, page: Page): void
+  set(kind: "slots", name: string, slot: Slot): void
+  remove(kind: "routes" | "slots", name: string): void
+  active(): boolean
+}
+
+// The host services a plugin context adapts. Collected once by the provider
+// (hooks must run during component setup) and shared by every activation.
+export function usePluginHost() {
+  return {
+    renderer: useRenderer(),
+    client: useClient(),
+    data: useData(),
+    route: useRoute(),
+    keymap: Keymap.use(),
+    shortcuts: Keymap.useShortcuts(),
+    keymapState: Keymap.useState(),
+    app: useTuiApp(),
+    paths: useTuiPaths(),
+    location: useLocation(),
+    themes: useThemes(),
+    dialog: useDialog(),
+    toast: useToast(),
+    attention: useAttention(),
+    storage: useStorage(),
+    sessionTabs: useSessionTabs(),
+  }
+}
+
+// Build the API surface handed to one plugin activation: host services
+// adapted to the plugin contract, with everything registered through it
+// unwinding via `owned` when the activation is disposed.
+export function createPluginContext(input: {
+  host: ReturnType<typeof usePluginHost>
+  id: string
+  options: Readonly<Record<string, any>> | undefined
+  owned: Dispose[]
+  registry: Registry
+}): Context {
+  const host = input.host
+  let context: Context
+  // Every dialog and registered render is wrapped so plugin components can
+  // reach their own context through usePlugin().
+  const provide = (render: () => JSX.Element) => (
+    <PluginContextProvider value={context}>{render()}</PluginContextProvider>
+  )
+  const dialogApi = createDialogApi(host.dialog, provide)
+  const toastApi: Toast = {
+    show(options) {
+      host.toast.show({ ...options, variant: options.variant ?? "info" })
+    },
+  }
+  // Unregistering after deactivation is a no-op: deactivate already resets
+  // the registration's routes and slots wholesale.
+  const registration = (kind: "routes" | "slots", name: string) => {
+    let registered = true
+    const unregister = () => {
+      if (!registered) return
+      registered = false
+      if (!input.registry.active()) return
+      input.registry.remove(kind, name)
+    }
+    input.owned.push(async () => unregister())
+    return unregister
+  }
+  context = {
+    options: input.options ?? {},
+    get location() {
+      return host.location.current
+    },
+    app: { version: host.app.version, channel: host.app.channel },
+    renderer: host.renderer,
+    client: host.client.api,
+    data: host.data,
+    attention: host.attention,
+    get theme() {
+      return host.themes.currentTokens()
+    },
+    keymap: {
+      layer: Keymap.createLayer,
+      dispatch: host.keymap.dispatch,
+      shortcuts: host.shortcuts.list,
+      commands: host.keymapState.commands,
+      pending: host.keymapState.pending,
+      active: host.keymapState.active,
+      mode: host.keymap.mode,
+    },
+    storage: {
+      store: (key, options) => host.storage.store(`plugin.${input.id}.${key}`, options),
+      memory: (key, options) => host.storage.memory(`plugin.${input.id}.${key}`, options),
+    },
+    ui: {
+      dialog: dialogApi,
+      toast: toastApi,
+      format: {
+        path: (value) => abbreviateHome(value, host.paths.home),
+      },
+      router: {
+        register(page) {
+          if (input.registry.has("routes", page.name)) throw new Error(`Route already registered: ${page.name}`)
+          input.registry.set("routes", page.name, {
+            ...page,
+            render: (data) => provide(() => page.render(data)),
+          })
+          return registration("routes", page.name)
+        },
+        navigate(destination) {
+          if (destination.type === "plugin") {
+            host.route.navigate({ ...destination, id: "id" in destination ? destination.id : input.id })
+            return
+          }
+          host.route.navigate(destination)
+        },
+        current() {
+          return host.route.data
+        },
+      },
+      tabs: {
+        enabled: host.sessionTabs.enabled,
+        list: () =>
+          host.sessionTabs.tabs().map((tab) => ({
+            ...tab,
+            active: host.sessionTabs.current() === tab.sessionID,
+            ...host.sessionTabs.status(tab.sessionID),
+          })),
+        open(sessionID) {
+          if (!host.sessionTabs.enabled()) return false
+          host.sessionTabs.select(sessionID)
+          return true
+        },
+        focus(sessionID) {
+          if (!host.sessionTabs.enabled()) return false
+          if (!host.sessionTabs.tabs().some((tab) => tab.sessionID === sessionID)) return false
+          host.sessionTabs.select(sessionID)
+          return true
+        },
+        close(sessionID) {
+          if (!host.sessionTabs.enabled()) return false
+          const target = sessionID ?? host.sessionTabs.current()
+          if (!target || !host.sessionTabs.tabs().some((tab) => tab.sessionID === target)) return false
+          host.sessionTabs.close(target)
+          return true
+        },
+      },
+      slot(name, render) {
+        if (input.registry.has("slots", name)) throw new Error(`Slot already registered: ${name}`)
+        // The registration map erases the slot-specific input type.
+        input.registry.set("slots", name, ((slotInput: SlotMap[typeof name]) =>
+          provide(() => render(slotInput))) as Slot)
+        return registration("slots", name)
+      },
+    },
+  }
+  return context
+}
+
+// A dialog promise must settle exactly once even when confirm and close
+// callbacks both fire.
+function settle<T>(resolve: (value: T) => void) {
+  let settled = false
+  return (value: T) => {
+    if (settled) return
+    settled = true
+    resolve(value)
+  }
+}
+
+function createDialogApi(dialog: ReturnType<typeof useDialog>, provide: (render: () => JSX.Element) => JSX.Element) {
+  const api: Dialog = {
+    show(render, onClose) {
+      dialog.replace(() => provide(render), onClose)
+    },
+    set(options) {
+      dialog.setSize(options.size ?? "medium")
+      dialog.setCentered(options.centered ?? false)
+    },
+    clear() {
+      dialog.clear()
+    },
+    alert(options) {
+      return new Promise<void>((resolve) => {
+        const done = settle(resolve)
+        api.show(() => <DialogAlert title={options.title} message={options.message} onConfirm={done} />, done)
+      })
+    },
+    confirm(options) {
+      return new Promise<boolean | undefined>((resolve) => {
+        const done = settle(resolve)
+        api.show(
+          () => (
+            <DialogConfirm
+              title={options.title}
+              message={options.message}
+              label={options.label}
+              onConfirm={() => done(true)}
+              onCancel={() => done(false)}
+            />
+          ),
+          () => done(undefined),
+        )
+      })
+    },
+    prompt(options) {
+      return new Promise<string | undefined>((resolve) => {
+        const done = settle(resolve)
+        api.show(
+          () => (
+            <DialogPrompt
+              title={options.title}
+              description={options.description ? () => <text>{options.description}</text> : undefined}
+              placeholder={options.placeholder}
+              value={options.value}
+              onConfirm={(value) => {
+                done(value)
+                api.clear()
+              }}
+            />
+          ),
+          () => done(undefined),
+        )
+      })
+    },
+    select(options) {
+      return new Promise((resolve) => {
+        const done = settle<(typeof options.options)[number]["value"] | undefined>(resolve)
+        api.show(
+          () => (
+            <DialogSelect
+              title={options.title}
+              placeholder={options.placeholder}
+              options={options.options.map((option) => ({ ...option }))}
+              current={options.current}
+              onSelect={(option) => {
+                done(option.value)
+                api.clear()
+              }}
+            />
+          ),
+          () => done(undefined),
+        )
+      })
+    },
+  }
+  return api
+}
@@ -1,51 +1,25 @@
-import { PluginContextProvider, type Plugin } from "@opencode-ai/plugin/tui"
-import {
-  batch,
-  createContext,
-  createEffect,
-  createMemo,
-  For,
-  on,
-  onCleanup,
-  onMount,
-  useContext,
-  type JSX,
-  type ParentProps,
-} from "solid-js"
+import type { Plugin } from "@opencode-ai/plugin/tui"
+import { batch, createContext, createEffect, on, onCleanup, onMount, useContext, type ParentProps } from "solid-js"
 import path from "path"
 import { stat } from "fs/promises"
 import { fileURLToPath, pathToFileURL } from "url"
-import type { Context, Dialog, Page, Slot, SlotMap, SlotName, Toast } from "@opencode-ai/plugin/tui/context"
+import type { Page, Slot, SlotName } from "@opencode-ai/plugin/tui/context"
 import { createStore, produce, reconcile as reconcileStore } from "solid-js/store"
-import { useRenderer } from "@opentui/solid"
+import { isDeepEqual } from "remeda"
 import "#runtime-plugin-support"
 import { useConfig } from "../config"
-import { useClient } from "../context/client"
-import { useData } from "../context/data"
-import { Keymap } from "../context/keymap"
-import { useRoute } from "../context/route"
-import { useTuiApp, useTuiLifecycle, useTuiPaths } from "../context/runtime"
-import { useLocation } from "../context/location"
-import { useThemes } from "../context/theme"
-import { DialogAlert } from "../ui/dialog-alert"
-import { DialogConfirm } from "../ui/dialog-confirm"
-import { DialogPrompt } from "../ui/dialog-prompt"
-import { DialogSelect } from "../ui/dialog-select"
-import { useDialog } from "../ui/dialog"
-import { useToast } from "../ui/toast"
-import { useAttention } from "../context/attention"
-import { useStorage } from "../context/storage"
-import { useSessionTabs } from "../context/session-tabs"
-import { abbreviateHome } from "../util/path-format"
+import { useTuiLifecycle } from "../context/runtime"
+import { errorMessage } from "../util/error"
 import { builtins } from "./builtins"
-import { discoverTuiPlugins } from "./discovery"
+import { createPluginContext, usePluginHost, type Dispose } from "./api"
+import { createSourceWatcher } from "./watch"
+import { discoverTuiPlugins, freshSpecifier, localSource, tuiPluginDirectory } from "./discovery"

 export interface PackageResolver {
  readonly resolve: (spec: string) => Promise<string | undefined>
 }

 type State =
-  | { readonly target: string; readonly status: "loading" }
  | { readonly target: string; readonly id: string; readonly status: "active" | "inactive" }
  | { readonly target: string; readonly status: "unsupported" }
  | { readonly target: string; readonly status: "failed"; readonly error: string }
@@ -61,15 +35,16 @@ type Value = {
  readonly list: () => ReadonlyArray<State>
  readonly registered: () => ReadonlyArray<RegisteredPlugin>
  readonly route: (id: string, name: string) => Page["render"] | undefined
-  readonly slot: <Name extends SlotName>(name: Name) => ReadonlyArray<Slot<Name>>
+  readonly slot: <Name extends SlotName>(name: Name) => ReadonlyArray<{ readonly id: string; readonly render: Slot<Name> }>
  readonly activate: (id: string) => Promise<boolean>
  readonly deactivate: (id: string) => Promise<boolean>
 }

-type Dispose = () => Promise<void>
 type Registration = {
  plugin: Plugin.Definition
  source: RegisteredPlugin["source"]
+  target?: string
+  version: string
  options?: Readonly<Record<string, any>>
  active: boolean
  routes: Record<string, Page>
@@ -77,27 +52,15 @@ type Registration = {
  cleanups: Dispose[]
 }

+// One entry of the desired plugin generation produced by the resolve phase.
+type Desired = Pick<Registration, "plugin" | "source" | "target" | "version" | "options"> & { enabled: boolean }
+
 const PluginContext = createContext<Value>()

 export function PluginProvider(props: ParentProps<{ packages: PackageResolver }>) {
-  const renderer = useRenderer()
-  const client = useClient()
-  const data = useData()
-  const route = useRoute()
+  const host = usePluginHost()
  const config = useConfig()
-  const keymap = Keymap.use()
-  const shortcuts = Keymap.useShortcuts()
-  const keymapState = Keymap.useState()
  const lifecycle = useTuiLifecycle()
-  const app = useTuiApp()
-  const paths = useTuiPaths()
-  const location = useLocation()
-  const themes = useThemes()
-  const dialog = useDialog()
-  const toast = useToast()
-  const attention = useAttention()
-  const storage = useStorage()
-  const sessionTabs = useSessionTabs()
  const directory = config.path ? path.dirname(config.path) : process.cwd()
  const [store, setStore] = createStore({
    ready: false,
@@ -115,223 +78,26 @@ export function PluginProvider(props: ParentProps<{ packages: PackageResolver }>
      setStore("registrations", id, "cleanups", [])
    })
    const owned: Dispose[] = []
-    let context: Context
-    const dialogApi: Dialog = {
-      show(render, onClose) {
-        dialog.replace(() => <PluginContextProvider value={context}>{render()}</PluginContextProvider>, onClose)
+    const context = createPluginContext({
+      host,
+      id,
+      options: item.options,
+      owned,
+      registry: {
+        has: (kind, name) => Boolean(store.registrations[id]?.[kind][name]),
+        set: (kind: "routes" | "slots", name: string, value: Page | Slot) =>
+          setStore("registrations", id, kind, name, () => value),
+        remove: (kind, name) =>
+          setStore(
+            "registrations",
+            produce((registrations) => {
+              if (!registrations[id]) return
+              delete registrations[id][kind][name]
+            }),
+          ),
+        active: () => Boolean(store.registrations[id]?.active),
      },
-      set(options) {
-        dialog.setSize(options.size ?? "medium")
-        dialog.setCentered(options.centered ?? false)
-      },
-      clear() {
-        dialog.clear()
-      },
-      alert(options) {
-        return new Promise<void>((resolve) => {
-          let settled = false
-          const done = () => {
-            if (settled) return
-            settled = true
-            resolve()
-          }
-          dialogApi.show(() => <DialogAlert title={options.title} message={options.message} onConfirm={done} />, done)
-        })
-      },
-      confirm(options) {
-        return new Promise<boolean | undefined>((resolve) => {
-          let settled = false
-          const done = (result: boolean | undefined) => {
-            if (settled) return
-            settled = true
-            resolve(result)
-          }
-          dialogApi.show(
-            () => (
-              <DialogConfirm
-                title={options.title}
-                message={options.message}
-                label={options.label}
-                onConfirm={() => done(true)}
-                onCancel={() => done(false)}
-              />
-            ),
-            () => done(undefined),
-          )
-        })
-      },
-      prompt(options) {
-        return new Promise<string | undefined>((resolve) => {
-          let settled = false
-          const done = (result: string | undefined) => {
-            if (settled) return
-            settled = true
-            resolve(result)
-          }
-          dialogApi.show(
-            () => (
-              <DialogPrompt
-                title={options.title}
-                description={options.description ? () => <text>{options.description}</text> : undefined}
-                placeholder={options.placeholder}
-                value={options.value}
-                onConfirm={(value) => {
-                  done(value)
-                  dialogApi.clear()
-                }}
-              />
-            ),
-            () => done(undefined),
-          )
-        })
-      },
-      select(options) {
-        return new Promise((resolve) => {
-          let settled = false
-          const done = (result: (typeof options.options)[number]["value"] | undefined) => {
-            if (settled) return
-            settled = true
-            resolve(result)
-          }
-          dialogApi.show(
-            () => (
-              <DialogSelect
-                title={options.title}
-                placeholder={options.placeholder}
-                options={options.options.map((option) => ({ ...option }))}
-                current={options.current}
-                onSelect={(option) => {
-                  done(option.value)
-                  dialogApi.clear()
-                }}
-              />
-            ),
-            () => done(undefined),
-          )
-        })
-      },
-    }
-    const toastApi: Toast = {
-      show(options) {
-        toast.show({ ...options, variant: options.variant ?? "info" })
-      },
-    }
-    context = {
-      options: item.options ?? {},
-      get location() {
-        return location.current
-      },
-      app: { version: app.version, channel: app.channel },
-      renderer,
-      client: client.api,
-      data,
-      attention,
-      get theme() {
-        return themes.currentTokens()
-      },
-      keymap: {
-        layer: Keymap.createLayer,
-        dispatch: keymap.dispatch,
-        shortcuts: shortcuts.list,
-        commands: keymapState.commands,
-        pending: keymapState.pending,
-        active: keymapState.active,
-        mode: keymap.mode,
-      },
-      storage: {
-        store: (key, options) => storage.store(`plugin.${item.plugin.id}.${key}`, options),
-      },
-      ui: {
-        dialog: dialogApi,
-        toast: toastApi,
-        format: {
-          path: (value) => abbreviateHome(value, paths.home),
-        },
-        router: {
-          register(page) {
-            if (store.registrations[item.plugin.id]?.routes[page.name])
-              throw new Error(`Route already registered: ${page.name}`)
-            setStore("registrations", item.plugin.id, "routes", page.name, {
-              ...page,
-              render: (input) => <PluginContextProvider value={context}>{page.render(input)}</PluginContextProvider>,
-            })
-            let registered = true
-            const unregister = () => {
-              if (!registered) return
-              registered = false
-              if (!store.registrations[item.plugin.id]?.active) return
-              setStore(
-                "registrations",
-                produce((registrations) => {
-                  if (!registrations[item.plugin.id]) return
-                  delete registrations[item.plugin.id].routes[page.name]
-                }),
-              )
-            }
-            owned.push(async () => unregister())
-            return unregister
-          },
-          navigate(destination) {
-            if (destination.type === "plugin") {
-              route.navigate({ ...destination, id: "id" in destination ? destination.id : item.plugin.id })
-              return
-            }
-            route.navigate(destination)
-          },
-          current() {
-            return route.data
-          },
-        },
-        tabs: {
-          enabled: sessionTabs.enabled,
-          list: () =>
-            sessionTabs.tabs().map((tab) => ({
-              ...tab,
-              active: sessionTabs.current() === tab.sessionID,
-              ...sessionTabs.status(tab.sessionID),
-            })),
-          open(sessionID) {
-            if (!sessionTabs.enabled()) return false
-            sessionTabs.select(sessionID)
-            return true
-          },
-          focus(sessionID) {
-            if (!sessionTabs.enabled()) return false
-            if (!sessionTabs.tabs().some((tab) => tab.sessionID === sessionID)) return false
-            sessionTabs.select(sessionID)
-            return true
-          },
-          close(sessionID) {
-            if (!sessionTabs.enabled()) return false
-            const target = sessionID ?? sessionTabs.current()
-            if (!target || !sessionTabs.tabs().some((tab) => tab.sessionID === target)) return false
-            sessionTabs.close(target)
-            return true
-          },
-        },
-        slot(name, render) {
-          if (store.registrations[item.plugin.id]?.slots[name]) throw new Error(`Slot already registered: ${name}`)
-          setStore("registrations", item.plugin.id, "slots", name, () => (input: SlotMap[typeof name]) => (
-            <PluginContextProvider value={context}>{render(input)}</PluginContextProvider>
-          ))
-          let registered = true
-          const unregister = () => {
-            if (!registered) return
-            registered = false
-            if (!store.registrations[item.plugin.id]?.active) return
-            setStore(
-              "registrations",
-              produce((registrations) => {
-                if (!registrations[item.plugin.id]) return
-                delete registrations[item.plugin.id].slots[name]
-              }),
-            )
-          }
-          owned.push(async () => unregister())
-          return unregister
-        },
-      },
-    }
+    })
    const cleanup = await setup(item.plugin, context, owned).catch((error) => {
      setStore("registrations", id, "routes", reconcileStore({}))
      setStore("registrations", id, "slots", reconcileStore({}))
@@ -374,94 +140,219 @@ export function PluginProvider(props: ParentProps<{ packages: PackageResolver }>
    return true
  }

-  const reconcile = async (configured = config.data.plugins ?? []) => {
-    await Promise.all(
-      Object.entries(store.registrations)
-        .filter(([, registration]) => registration.active)
-        .map(([id]) => deactivate(id)),
+  // Cleanup failures must not stop a swap or teardown, but they should not
+  // vanish either: the old generation may still own listeners or intervals.
+  const deactivateNoisily = (id: string) =>
+    deactivate(id).catch((error) =>
+      host.toast.show({ variant: "error", title: "Plugin", message: `${id}: cleanup failed: ${errorMessage(error)}` }),
    )
-    const entries = [...(await discoverTuiPlugins(paths.cwd)), ...configured]
-    batch(() => {
-      setStore("registrations", reconcileStore({}))
-      setStore("states", [])
-    })

-    for (const plugin of builtins) {
-      setStore("registrations", plugin.id, {
-        plugin,
-        source: "builtin",
-        active: false,
-        routes: {},
-        slots: {},
-        cleanups: [],
-      })
-      await activate(plugin.id)
-    }
+  // Every lifecycle mutation — reconciles, manual dialog toggles, shutdown —
+  // is serialized through one chain so generations can never interleave.
+  let loading = Promise.resolve()
+  const enqueue = <T,>(task: () => Promise<T>) => {
+    const result = loading.catch(() => undefined).then(task)
+    loading = result.then(
+      () => undefined,
+      () => undefined,
+    )
+    return result
+  }

+  // Hot-reload local plugin sources: watch the discovery directory and any
+  // local entrypoints (see watch.ts for the mechanics), debounced into a
+  // serialized reconcile so bursts of events rebuild the generation once.
+  let pending: ReturnType<typeof setTimeout> | undefined
+  const watcher = createSourceWatcher(() => {
+    clearTimeout(pending)
+    pending = setTimeout(() => {
+      // Observe failures immediately: a plugin cleanup that throws would
+      // otherwise surface as an unhandled rejection until the next trigger.
+      void enqueue(reconcile).catch(() => undefined)
+    }, 100)
+  })
+  onCleanup(() => {
+    clearTimeout(pending)
+    watcher.dispose()
+  })
+
+  // Rebuild the plugin generation as resolve → compare → swap, mirroring the
+  // core plugin registry: fold the ordered entries into a desired end state
+  // (importing only new or changed sources, before anything running is
+  // touched), no-op when the generation is unchanged, and restart only the
+  // plugins that differ. Membership or order changes rebuild the whole
+  // generation to preserve slot-order semantics.
+  // Package resolution failures would otherwise retry a full npm install on
+  // every watch event; remember them until the configuration changes.
+  const npmFailures = new Map<string, string>()
+  const reconcile = async () => {
+    const entries = [...(await discoverTuiPlugins(host.paths.cwd)), ...(config.data.plugins ?? [])]
+    watcher.add(tuiPluginDirectory(host.paths.cwd))
+
+    // Resolve: fold entries into one desired generation. A source that fails
+    // to import keeps its running previous version and only reports failure.
+    const desired = new Map<string, Desired>()
+    for (const plugin of builtins) desired.set(plugin.id, { plugin, source: "builtin", version: "builtin", enabled: true })
+    const failures: State[] = []
    for (const entry of entries) {
      const target = typeof entry === "string" ? entry : entry.package
      if (target.startsWith("-")) {
-        for (const id of Object.keys(store.registrations).filter((id) => matches(target.slice(1), id)))
-          await deactivate(id)
+        for (const item of desired.values()) if (matches(target.slice(1), item.plugin.id)) item.enabled = false
        continue
      }

-      const selected = Object.keys(store.registrations).filter((id) => matches(target, id))
+      const selected = [...desired.values()].filter((item) => matches(target, item.plugin.id))
      if (selected.length || target === "*" || target.endsWith(".*") || target.startsWith("opencode.")) {
-        for (const id of selected) await activate(id)
+        for (const item of selected) item.enabled = true
        continue
      }

      const options = typeof entry === "string" ? undefined : entry.options
-      setStore("states", (items) => [...items, { target, status: "loading" }])
-      const plugin = await loadPlugin(target, directory, props.packages).catch((error) => {
-        setStore("states", (items) =>
-          items.map((state) =>
-            state.target === target
-              ? { target, status: "failed", error: error instanceof Error ? error.message : String(error) }
-              : state,
-          ),
-        )
-        return undefined
-      })
-      if (!plugin) {
-        setStore("states", (items) =>
-          items.map((state) =>
-            state.target === target && state.status !== "failed" ? { target, status: "unsupported" } : state,
-          ),
-        )
+      // Watch even when the resolve below fails so fixing a broken plugin reloads it.
+      const local = localSource(target, directory)
+      if (local) watcher.add(fileURLToPath(local))
+      const previous = Object.values(store.registrations).find((registration) => registration.target === target)
+      const memo = local ? undefined : npmFailures.get(target)
+      const resolved = memo
+        ? { status: "failed" as const, error: memo }
+        : await resolvePlugin(target, local, options, previous, props.packages).catch((error) => ({
+            status: "failed" as const,
+            error: errorMessage(error),
+          }))
+      if (resolved.status === "unsupported") {
+        failures.push({ target, status: "unsupported" })
        continue
      }
-
-      setStore("registrations", plugin.id, {
-        plugin,
+      if (resolved.status === "failed") {
+        if (!local && !previous) npmFailures.set(target, resolved.error)
+        failures.push({
+          target,
+          status: "failed",
+          error: previous?.active ? `${resolved.error} (previous version still active)` : resolved.error,
+        })
+        if (previous)
+          desired.set(previous.plugin.id, {
+            plugin: previous.plugin,
+            source: previous.source,
+            target,
+            version: previous.version,
+            options: previous.options,
+            enabled: previous.active,
+          })
+        continue
+      }
+      desired.set(resolved.plugin.id, {
+        plugin: resolved.plugin,
        source: "external",
+        target,
+        version: resolved.version,
        options,
-        active: false,
-        routes: {},
-        slots: {},
-        cleanups: [],
+        enabled: true,
      })
-      const error = await activate(plugin.id).then(
-        () => undefined,
-        (error) => (error instanceof Error ? error.message : String(error)),
-      )
-      setStore("states", (items) => [
-        ...items.filter((state) => state.target !== target && (!("id" in state) || state.id !== plugin.id)),
-        error
-          ? { target, status: "failed", error }
-          : { target, id: plugin.id, status: "active" },
-      ])
    }
+
+    // Compare: unchanged plugins are never touched, and a fully unchanged
+    // generation is a no-op, so spurious watch events cost nothing.
+    const currentIds = Object.keys(store.registrations)
+    const desiredIds = [...desired.keys()]
+    const structural = currentIds.length !== desiredIds.length || currentIds.some((id, index) => desiredIds[index] !== id)
+    if (structural) {
+      await Promise.all(
+        Object.entries(store.registrations)
+          .filter(([, registration]) => registration.active)
+          .map(([id]) => deactivateNoisily(id)),
+      )
+      setStore("registrations", reconcileStore({}))
+    }
+    const changed = structural
+      ? desiredIds
+      : desiredIds.filter((id) => {
+          const registration = store.registrations[id]!
+          const item = desired.get(id)!
+          // enabled derives from config directives alone, so config wins over
+          // manual dialog toggles on every reconcile — the same semantics
+          // config saves had before hot reload existed, just more frequent.
+          return (
+            registration.version !== item.version ||
+            !sameOptions(registration.options, item.options) ||
+            registration.active !== item.enabled
+          )
+        })
+
+    // Swap: cleanup failures surface as a toast, never propagate, so one
+    // broken plugin cannot take the rest of the generation down.
+    const errors = new Map<string, string>()
+    for (const id of changed) {
+      const item = desired.get(id)!
+      const registration = store.registrations[id]
+      const replaced =
+        !registration || registration.version !== item.version || !sameOptions(registration.options, item.options)
+      // Snapshot the running version before it is overwritten: an import
+      // failure keeps last-good in the resolve phase, and a setup failure
+      // must not cost the previous version either.
+      const fallback: Desired | undefined =
+        replaced && registration
+          ? {
+              plugin: registration.plugin,
+              source: registration.source,
+              target: registration.target,
+              version: registration.version,
+              options: registration.options,
+              enabled: registration.active,
+            }
+          : undefined
+      if (replaced) {
+        if (registration) await deactivateNoisily(id)
+        // In-place replacement keeps the registration's key position, which
+        // slot ordering (mode "replace" takes the last one) depends on.
+        setStore("registrations", id, toRegistration(item))
+      }
+      if (!item.enabled) {
+        await deactivateNoisily(id)
+        continue
+      }
+      const error = await activate(id).then(() => undefined, errorMessage)
+      if (!error) continue
+      errors.set(id, error)
+      if (!fallback) continue
+      setStore("registrations", id, toRegistration(fallback))
+      if (!fallback.enabled) continue
+      const restored = await activate(id).then(
+        () => true,
+        () => false,
+      )
+      if (restored) errors.set(id, `${error} (previous version still active)`)
+    }
+
+    const failedTargets = new Set(failures.map((failure) => failure.target))
+    const states: State[] = [
+      ...[...desired.values()].flatMap((item): State[] => {
+        if (item.target === undefined) return []
+        // A failed reload keeps this item running; the failure entry covers it.
+        if (failedTargets.has(item.target)) return []
+        const error = errors.get(item.plugin.id)
+        if (error) return [{ target: item.target, status: "failed", error }]
+        const status = store.registrations[item.plugin.id]?.active ? "active" : "inactive"
+        return [{ target: item.target, id: item.plugin.id, status }]
+      }),
+      ...failures,
+    ]
+    // Surface newly failing plugins; repeated reconciles stay silent.
+    for (const state of states)
+      if (
+        state.status === "failed" &&
+        !store.states.some((prev) => prev.status === "failed" && prev.target === state.target && prev.error === state.error)
+      )
+        host.toast.show({ variant: "error", title: "Plugin", message: `${state.target}: ${state.error}` })
+    setStore("states", reconcileStore(states))
  }
-  let loading = Promise.resolve()
+  const slotItems = new WeakMap<Slot, { readonly id: string; readonly render: Slot }>()
  createEffect(
    on(
      () => JSON.stringify(config.data.plugins ?? []),
      () => {
-        const configured = config.data.plugins ?? []
-        loading = loading.catch(() => undefined).then(() => reconcile(configured))
-        void loading.then(
+        npmFailures.clear()
+        void enqueue(reconcile).then(
          () => setStore("ready", true),
          () => setStore("ready", true),
        )
@@ -478,7 +369,7 @@ export function PluginProvider(props: ParentProps<{ packages: PackageResolver }>
          Promise.all(
            Object.entries(store.registrations)
              .filter(([, registration]) => registration.active)
-              .map(([id]) => deactivate(id)),
+              .map(([id]) => deactivate(id).catch(() => undefined)),
          ),
        )
        .then(() => setStore("registrations", reconcileStore({})))
@@ -500,11 +391,22 @@ export function PluginProvider(props: ParentProps<{ packages: PackageResolver }>
          Object.entries(store.registrations).map(([id, plugin]) => ({ id, source: plugin.source, active: plugin.active })),
        route: (id, name) => store.registrations[id]?.routes[name]?.render,
        slot: (name) =>
-          Object.values(store.registrations).flatMap((registration) =>
-            registration.active && registration.slots[name] ? [registration.slots[name]] : [],
-          ),
-        activate,
-        deactivate,
+          Object.entries(store.registrations).flatMap(([id, registration]) => {
+            const render = registration.active ? registration.slots[name] : undefined
+            if (!render) return []
+            // <For> diffs rows by reference; a stable wrapper per render
+            // function keeps untouched plugins' slot rows (and their state)
+            // alive across other plugins' reloads.
+            const cached = slotItems.get(render)
+            if (cached) return [cached]
+            const item = { id, render }
+            slotItems.set(render, item)
+            return [item]
+          }),
+        // Manual dialog toggles join the same chain as reconciles so a
+        // toggle mid-reload cannot mix registrations across generations.
+        activate: (id) => enqueue(() => activate(id)),
+        deactivate: (id) => enqueue(() => deactivate(id)),
      }}
    >
      {props.children}
@@ -531,17 +433,45 @@ function matches(selector: string, id: string) {
  return selector === "*" || selector === id || (selector.endsWith(".*") && id.startsWith(selector.slice(0, -1)))
 }

-async function loadPlugin(spec: string, directory: string, packages: PackageResolver) {
-  const local = spec.startsWith("file://")
-    ? new URL(spec)
-    : spec.startsWith("./") || spec.startsWith("../") || path.isAbsolute(spec)
-      ? pathToFileURL(path.resolve(directory, spec))
-      : undefined
+async function resolvePlugin(
+  spec: string,
+  local: URL | undefined,
+  options: Readonly<Record<string, any>> | undefined,
+  previous: Registration | undefined,
+  packages: PackageResolver,
+) {
+  // Package entrypoints never change within a session, so a loaded previous
+  // version needs no re-resolution (which could otherwise hit npm).
+  if (!local && previous && sameOptions(previous.options, options))
+    return { status: "unchanged" as const, plugin: previous.plugin, version: previous.version }
  const entrypoint = local ? await resolveLocal(local) : await packages.resolve(spec)
-  if (!entrypoint) return
-  const mod: { readonly default?: unknown } = await import(entrypoint)
+  if (!entrypoint) return { status: "unsupported" as const }
+  // The cache-busted specifier doubles as the version: unique per entrypoint
+  // and mtime, so equal versions mean an identical module.
+  const version = local ? freshSpecifier(entrypoint, (await stat(new URL(entrypoint))).mtimeMs) : entrypoint
+  if (previous && previous.version === version && sameOptions(previous.options, options))
+    return { status: "unchanged" as const, plugin: previous.plugin, version }
+  const mod: { readonly default?: unknown } = await import(version)
  if (!isPlugin(mod.default)) throw new Error(`Invalid V2 TUI plugin module: ${spec}`)
-  return mod.default
+  return { status: "loaded" as const, plugin: mod.default, version }
+}
+
+function toRegistration(item: Desired): Registration {
+  return {
+    plugin: item.plugin,
+    source: item.source,
+    target: item.target,
+    version: item.version,
+    options: item.options,
+    active: false,
+    routes: {},
+    slots: {},
+    cleanups: [],
+  }
+}
+
+function sameOptions(a: Registration["options"], b: Registration["options"]) {
+  return isDeepEqual(a ?? null, b ?? null)
 }

 async function resolveLocal(url: URL) {
@@ -576,29 +506,3 @@ export function usePlugin() {
  if (!value) throw new Error("PluginProvider is missing")
  return value
 }
-
-export function PluginRoute(props: { readonly fallback: (id: string, name: string) => JSX.Element }) {
-  const plugins = usePlugin()
-  const route = useRoute()
-  const content = createMemo(() => {
-    if (route.data.type !== "plugin") return
-    const render = plugins.route(route.data.id, route.data.name)
-    if (!render) return props.fallback(route.data.id, route.data.name)
-    return render({ data: route.data.data })
-  })
-  return <>{content()}</>
-}
-
-export function PluginSlot<Name extends SlotName>(props: {
-  readonly name: Name
-  readonly input: SlotMap[Name]
-  readonly mode: "all" | "replace"
-}) {
-  const plugins = usePlugin()
-  const renderers = createMemo(() => {
-    const items = plugins.slot(props.name)
-    if (props.mode === "replace") return items.slice(-1)
-    return items
-  })
-  return <For each={renderers()}>{(render) => render(props.input)}</For>
-}
@@ -1,10 +1,15 @@
 import { readdir } from "node:fs/promises"
 import path from "node:path"
+import { fileURLToPath, pathToFileURL } from "node:url"

 const extensions = new Set([".cjs", ".cts", ".js", ".jsx", ".mjs", ".mts", ".ts", ".tsx"])

+export function tuiPluginDirectory(cwd: string) {
+  return path.join(cwd, ".opencode", "plugins", "tui")
+}
+
 export async function discoverTuiPlugins(cwd: string) {
-  const directory = path.join(cwd, ".opencode", "plugins", "tui")
+  const directory = tuiPluginDirectory(cwd)
  const entries = await readdir(directory, { withFileTypes: true }).catch((error: unknown) => {
    if (error && typeof error === "object" && Reflect.get(error, "code") === "ENOENT") return []
    return Promise.reject(error)
@@ -14,3 +19,19 @@ export async function discoverTuiPlugins(cwd: string) {
    .map((entry) => path.join(directory, entry.name))
    .sort()
 }
+
+export function localSource(spec: string, directory: string) {
+  if (spec.startsWith("file://")) return new URL(spec)
+  if (spec.startsWith("./") || spec.startsWith("../") || path.isAbsolute(spec))
+    return pathToFileURL(path.resolve(directory, spec))
+  return undefined
+}
+
+// Key local plugin imports by mtime so edited sources re-import fresh instead
+// of hitting the ESM cache. Bun ignores query params when caching file:// URL
+// imports, so bust with a plain path there; Node keys its cache on the full
+// URL. Mirrors the core plugin supervisor's loader.
+export function freshSpecifier(entrypoint: string, mtime: number) {
+  if (typeof Bun !== "undefined") return `${fileURLToPath(entrypoint).replaceAll("\\", "/")}?mtime=${mtime}`
+  return `${entrypoint}?mtime=${mtime}`
+}
@@ -0,0 +1,84 @@
+import { createComponent, createMemo, ErrorBoundary, For, mergeProps, onMount, Show, type JSX, type ParentProps } from "solid-js"
+import type { SlotMap, SlotName } from "@opencode-ai/plugin/tui/context"
+import { useRoute } from "../context/route"
+import { useToast } from "../ui/toast"
+import { errorMessage } from "../util/error"
+import { usePlugin } from "./context"
+
+// Contain render-time plugin crashes: a throwing slot or route must not take
+// down the app or the other plugins. The crash surfaces as one error toast.
+function PluginBoundary(props: ParentProps<{ id: string; where: string }>) {
+  const toast = useToast()
+  return (
+    <ErrorBoundary
+      fallback={(error) => {
+        // One toast per crash: onMount is untracked, so prop updates while
+        // the boundary is latched cannot re-toast.
+        onMount(() =>
+          toast.show({
+            variant: "error",
+            title: "Plugin",
+            message: `${props.id} crashed in ${props.where}: ${errorMessage(error)}`,
+          }),
+        )
+        return null
+      }}
+    >
+      {props.children}
+    </ErrorBoundary>
+  )
+}
+
+export function PluginRoute(props: { readonly fallback: (id: string, name: string) => JSX.Element }) {
+  const plugins = usePlugin()
+  const route = useRoute()
+  const current = createMemo(() => {
+    if (route.data.type !== "plugin") return
+    return {
+      id: route.data.id,
+      name: route.data.name,
+      render: plugins.route(route.data.id, route.data.name),
+      data: route.data.data,
+    }
+  })
+  return (
+    // Keyed so navigation or a hot reload recreates the boundary; otherwise
+    // one crash would latch every future plugin route into the fallback.
+    <Show keyed when={current()}>
+      {(item) => (
+        <PluginBoundary id={item.id} where="route">
+          {item.render ? createComponent(item.render, { data: item.data }) : props.fallback(item.id, item.name)}
+        </PluginBoundary>
+      )}
+    </Show>
+  )
+}
+
+export function PluginSlot<Name extends SlotName>(props: {
+  readonly name: Name
+  readonly input: SlotMap[Name]
+  readonly mode: "all" | "replace"
+}) {
+  const plugins = usePlugin()
+  const renderers = createMemo(() => {
+    const items = plugins.slot(props.name)
+    if (props.mode === "replace") return items.slice(-1)
+    return items
+  })
+  return (
+    <For each={renderers()}>
+      {(item) => (
+        <PluginBoundary id={item.id} where={`slot ${props.name}`}>
+          {
+            // Component semantics: the render body runs once and untracked, so
+            // signals and intervals created inside are stable, while props stay
+            // reactive through the merged getter. A bare item.render(props.input)
+            // call would run inside the host's tracked scope and re-execute the
+            // whole body (resetting plugin state) on every tracked read.
+            createComponent(item.render, mergeProps(() => props.input) as SlotMap[Name])
+          }
+        </PluginBoundary>
+      )}
+    </For>
+  )
+}
@@ -0,0 +1,75 @@
+import path from "path"
+import { existsSync, watch } from "fs"
+import { lstat, realpath, stat } from "fs/promises"
+
+// Watch plugin sources for changes. Files are watched through their parent
+// directory (editors that save by rename replace the inode, which silently
+// kills a direct file watch) and filtered by basename so bursts in busy
+// directories stay quiet. Symlinked files are additionally watched at their
+// resolved target, since edits there emit nothing at the link's location.
+// Directory targets are watched at their root only: edits to nested helper
+// files do not change the entrypoint mtime and are not detected. Watches are
+// never torn down individually (a stale watch costs one fs handle and a
+// spurious onChange); all die with dispose(). Failed or vanished watches are
+// forgotten so a later add() can re-arm once the path exists.
+export function createSourceWatcher(onChange: () => void) {
+  const watchers = new Map<string, ReturnType<typeof watch>>()
+  const watched = new Map<string, Set<string> | null>()
+  let disposed = false
+  const forget = (dir: string) => {
+    watchers.get(dir)?.close()
+    watchers.delete(dir)
+    watched.delete(dir)
+  }
+  const arm = (target: string) => {
+    stat(target)
+      .then((info) => {
+        if (disposed) return
+        const dir = info.isDirectory() ? target : path.dirname(target)
+        // Directories accept every filename (null); files accept their basename.
+        const name = info.isDirectory() ? null : path.basename(target)
+        const existing = watched.get(dir)
+        if (existing !== undefined) {
+          if (name === null) watched.set(dir, null)
+          else existing?.add(name)
+          return
+        }
+        watched.set(dir, name === null ? null : new Set([name]))
+        const watcher = watch(dir, (_event, filename) => {
+          // A replaced directory keeps this watcher on the dead inode (Linux
+          // emits rename, not error); forget it so a later add() re-arms on
+          // the recreated path, and still schedule so reconcile runs now.
+          if (!existsSync(dir)) {
+            forget(dir)
+            onChange()
+            return
+          }
+          // A null filename (platform-dependent) always schedules.
+          const accept = watched.get(dir)
+          if (filename && accept && !accept.has(filename.toString())) return
+          onChange()
+        })
+        // A watched directory can disappear out from under us; without a
+        // listener the error event would crash the process. Forget the path
+        // so a later add can re-arm once it exists again.
+        watcher.on("error", () => forget(dir))
+        watchers.set(dir, watcher)
+      })
+      .catch(() => undefined)
+  }
+  const add = (target: string) => {
+    arm(target)
+    // A symlinked source receives edits at its resolved target.
+    lstat(target)
+      .then((info) => {
+        if (!info.isSymbolicLink()) return
+        return realpath(target).then(arm)
+      })
+      .catch(() => undefined)
+  }
+  const dispose = () => {
+    disposed = true
+    for (const watcher of watchers.values()) watcher.close()
+  }
+  return { add, dispose }
+}
@@ -9,7 +9,8 @@ import { useEditorContext } from "../context/editor"
 import { useData } from "../context/data"
 import { useLocation } from "../context/location"
 import { FormPrompt } from "./session/form"
-import { PluginSlot } from "../plugin/context"
+import { PluginSlot } from "../plugin/render"
+import { useTerminalDimensions } from "@opentui/solid"

 let once = false
 const placeholder = {
@@ -26,6 +27,7 @@ export function Home() {
  const editor = useEditorContext()
  const data = useData()
  const location = useLocation()
+  const dimensions = useTerminalDimensions()
  // Global MCP elicitations can arrive without a session route, so keep them reachable from Home.
  const currentLocation = () => route.location ?? data.location.default()
  const forms = createMemo(() => data.session.form.list("global", currentLocation()) ?? [])
@@ -71,7 +73,12 @@ export function Home() {

  return (
    <>
-      <box flexGrow={1} alignItems="center" paddingLeft={2} paddingRight={2}>
+      <box
+        flexGrow={1}
+        alignItems="center"
+        paddingLeft={dimensions().width < 44 ? 1 : 2}
+        paddingRight={dimensions().width < 44 ? 1 : 2}
+      >
        <box flexGrow={1} minHeight={0} />
        <box height={4} minHeight={0} flexShrink={1} />
        <box flexShrink={0}>
@@ -22,6 +22,7 @@ import { useData } from "../../context/data"
 import { SplitBorder } from "../../ui/border"
 import { useTuiPaths, useTuiTerminalEnvironment } from "../../context/runtime"
 import { Spinner, SPINNER_FRAMES } from "../../component/spinner"
+import { PatchDiff } from "../../component/patch-diff"
 import { ThemeContextProvider, useTheme, useThemes } from "../../context/theme"
 import { BoxRenderable, ScrollBoxRenderable, addDefaultParsers, TextAttributes, RGBA } from "@opentui/core"
 import { Prompt, type PromptRef } from "../../component/prompt"
@@ -79,6 +80,7 @@ import { collapseToolOutput } from "../../util/collapse-tool-output"
 import { Keymap, type KeymapCommand } from "../../context/keymap"
 import { usePathFormatter } from "../../context/path-format"
 import { useLocation } from "../../context/location"
+import { PluginSlot } from "../../plugin/render"
 import {
  cacheReuseDrop,
  createSessionRows,
@@ -958,7 +960,14 @@ export function Session() {
      }}
    >
      <box flexDirection="row" flexGrow={1} minHeight={0}>
-        <box flexGrow={1} minHeight={0} paddingBottom={1} paddingLeft={2} paddingRight={2} gap={1}>
+        <box
+          flexGrow={1}
+          minHeight={0}
+          paddingBottom={1}
+          paddingLeft={dimensions().width < 44 ? 1 : 2}
+          paddingRight={dimensions().width < 44 ? 1 : 2}
+          gap={1}
+        >
          <Show when={session()}>
            <scrollbox
              ref={(r) => (scroll = r)}
@@ -1003,6 +1012,7 @@ export function Session() {
              </Show>
            </scrollbox>
            <box flexShrink={0}>
+              <PluginSlot name="session.composer.top" input={{ sessionID: route.sessionID }} mode="all" />
              <Composer
                sessionID={route.sessionID}
                open={composer.open || (!!session()?.parentID && forms().length === 0)}
@@ -1540,6 +1550,7 @@ function SessionGroupView(props: {
 function AssistantFooter(props: { message: SessionMessageAssistant }) {
  const ctx = use()
  const local = useLocal()
+  const dimensions = useTerminalDimensions()
  const theme = useTheme("elevated")
  const model = createMemo(
    () =>
@@ -1573,8 +1584,10 @@ function AssistantFooter(props: { message: SessionMessageAssistant }) {
          <span style={{ fg: props.message.error ? theme.text.subdued : local.agent.color(props.message.agent) }}>
            {Locale.titlecase(props.message.agent)}
          </span>
-          <span style={{ fg: theme.text.subdued }}> · {model()}</span>
-          <Show when={duration()}>
+          <Show when={dimensions().width >= 28}>
+            <span style={{ fg: theme.text.subdued }}> · {model()}</span>
+          </Show>
+          <Show when={duration() && (dimensions().width < 28 || dimensions().width >= 36)}>
            <span style={{ fg: theme.text.subdued }}> · {Locale.duration(duration())}</span>
          </Show>
          <Show when={interrupted()}>
@@ -3028,8 +3041,9 @@ function Edit(props: ToolProps) {
        {(item) => (
          <BlockTool path={{ label: "← Edit", value: pathFormatter.format(path()) }} part={props.part}>
            <box paddingLeft={1}>
-              <diff
+              <PatchDiff
                diff={item().patch}
+                hunkFg={theme.diff.text.hunkHeader}
                view={view()}
                filetype={filetype(path())}
                syntaxStyle={syntax()}
@@ -3117,8 +3131,9 @@ function ApplyPatch(props: ToolProps) {
                  }
                >
                  <box paddingLeft={1}>
-                    <diff
+                    <PatchDiff
                      diff={file.patch}
+                      hunkFg={theme.diff.text.hunkHeader}
                      view={view()}
                      filetype={filetype(file.relativePath)}
                      syntaxStyle={syntax()}
@@ -14,6 +14,7 @@ import { useConfig } from "../../config"
 import { Keymap } from "../../context/keymap"
 import { usePathFormatter } from "../../context/path-format"
 import { SimulationSemantics } from "../../simulation/semantics"
+import { PatchDiff } from "../../component/patch-diff"

 type PermissionStage = "permission" | "always" | "reject"

@@ -50,8 +51,9 @@ function EditBody(props: { file?: string; diff?: string; patch?: string }) {
            },
          }}
        >
-          <diff
+          <PatchDiff
            diff={diff()}
+            hunkFg={theme.diff.text.hunkHeader}
            view={view()}
            filetype={ft()}
            syntaxStyle={syntax()}
@@ -2,7 +2,7 @@ import { useData } from "../../context/data"
 import { createMemo, Show } from "solid-js"
 import { useTheme } from "../../context/theme"
 import { useConfig } from "../../config"
-import { PluginSlot } from "../../plugin/context"
+import { PluginSlot } from "../../plugin/render"
 import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"

 import { getScrollAcceleration } from "../../util/scroll"
@@ -0,0 +1,56 @@
+export interface PatchHunk {
+  readonly patch: string
+  readonly header?: string
+  readonly rows?: number
+}
+
+export function splitPatchHunks(patch: string): PatchHunk[] {
+  const starts = [
+    ...patch.matchAll(/^@@ -\d+(?:,\d+)? \+\d+(?:,\d+)? @@.*$/gm),
+  ].map((match) => match.index)
+  if (starts.length <= 1) return [{ patch }]
+
+  const prefix = patch.slice(0, starts[0])
+  return starts.map((start, index) => {
+    const end = starts[index + 1] ?? patch.length
+    const lineEnd = patch.indexOf("\n", start)
+    return {
+      header: patch.slice(start, lineEnd === -1 ? end : lineEnd),
+      patch: prefix + patch.slice(start, end),
+      rows: splitRows(patch.slice(start, end)),
+    }
+  })
+}
+
+function splitRows(hunk: string) {
+  const lines = hunk.replace(/\n$/, "").split("\n").slice(1)
+  let rows = 0
+  let index = 0
+
+  while (index < lines.length) {
+    const prefix = lines[index][0]
+    if (prefix === " " || !prefix) {
+      rows++
+      index++
+      continue
+    }
+    if (prefix === "\\") {
+      index++
+      continue
+    }
+
+    let additions = 0
+    let deletions = 0
+    while (
+      index < lines.length &&
+      (lines[index][0] === "+" || lines[index][0] === "-")
+    ) {
+      if (lines[index][0] === "+") additions++
+      if (lines[index][0] === "-") deletions++
+      index++
+    }
+    rows += Math.max(additions, deletions)
+  }
+
+  return rows
+}
@@ -103,6 +103,8 @@ test("brackets navigate diff hunks", async () => {
    await viewer.app.waitForFrame((frame) => frame.includes("const first"))
    await viewer.app.waitFor(() => Boolean(findScrollBox(viewer.app.renderer.root)))
    await viewer.app.flush()
+    expect(viewer.app.captureCharFrame()).toContain("@@ -20,3 +20,3 @@")
+    expect(countDiffs(viewer.app.renderer.root)).toBe(3)
    const scroll = findScrollBox(viewer.app.renderer.root)!
    const initial = scroll.scrollTop

@@ -256,6 +258,12 @@ function containsDiff(root: Renderable): boolean {
  return root.getChildren().some(containsDiff)
 }

+function countDiffs(root: Renderable): number {
+  return (
+    (root instanceof DiffRenderable ? 1 : 0) + root.getChildren().reduce((total, child) => total + countDiffs(child), 0)
+  )
+}
+
 const session = {
  id: "session-1",
  projectID: "project-1",
@@ -0,0 +1,263 @@
+import { expect, mock, test } from "bun:test"
+import { createTestRenderer } from "@opentui/core/testing"
+import { Effect, FileSystem } from "effect"
+import { AppNodeBuilder } from "@opencode-ai/core/effect/app-node-builder"
+import { Global } from "@opencode-ai/util/global"
+import { mkdir, readFile, symlink, writeFile } from "node:fs/promises"
+import path from "node:path"
+import { createEventStream, createFetch } from "./fixture/tui-client"
+import { tmpdir } from "./fixture/fixture"
+
+function lifecycleSource(marker: string, id: string, version: string) {
+  return `
+import { appendFile } from "node:fs/promises"
+export default {
+  id: ${JSON.stringify(id)},
+  setup: async () => {
+    await appendFile(${JSON.stringify(marker)}, "${version}:setup\\n")
+    return () => appendFile(${JSON.stringify(marker)}, "${version}:cleanup\\n")
+  },
+}
+`
+}
+
+async function until(read: () => Promise<string>, expected: (value: string | undefined) => boolean) {
+  let value: string | undefined
+  for (let attempt = 0; attempt < 200; attempt++) {
+    value = await read().catch(() => undefined)
+    if (expected(value)) return value
+    await Bun.sleep(50)
+  }
+  return value
+}
+
+async function bootApp(directory: string) {
+  const setup = await createTestRenderer({ width: 80, height: 24, useThread: false })
+  const core = await import("@opentui/core")
+  mock.module("@opentui/core", () => ({ ...core, createCliRenderer: async () => setup.renderer }))
+  const events = createEventStream()
+  const calls = createFetch(undefined, events)
+  const server = Bun.serve({ port: 0, fetch: (request) => calls.fetch(request) })
+  const cwd = process.cwd()
+  process.chdir(directory)
+  const { run } = await import("../src/app")
+  const task = Effect.runPromise(
+    run({
+      app: { name: "test", version: "test", channel: "test" },
+      server: { endpoint: { url: server.url.toString() } },
+      config: { get: async () => ({}), update: async () => ({}) },
+      packages: { resolve: async () => undefined },
+      args: {},
+      log: () => {},
+    }).pipe(Effect.provide(AppNodeBuilder.build(Global.node)), Effect.provide(FileSystem.layerNoop({}))),
+  )
+  return {
+    task,
+    async [Symbol.asyncDispose]() {
+      process.chdir(cwd)
+      if (!setup.renderer.isDestroyed) setup.renderer.destroy()
+      await server.stop()
+      mock.restore()
+    },
+  }
+}
+
+test("editing a discovered TUI plugin hot-reloads its fresh module", async () => {
+  await using tmp = await tmpdir()
+  const directory = path.join(tmp.path, ".opencode", "plugins", "tui")
+  await mkdir(directory, { recursive: true })
+  const marker = path.join(tmp.path, "marker.txt")
+  const source = path.join(directory, "hot.ts")
+  await writeFile(source, lifecycleSource(marker, "test.hot", "v1"))
+
+  await using app = await bootApp(tmp.path)
+  const read = () => readFile(marker, "utf8")
+  expect(await until(read, (value) => value === "v1:setup\n")).toBe("v1:setup\n")
+
+  await writeFile(source, lifecycleSource(marker, "test.hot", "v2"))
+  expect(await until(read, (value) => value?.includes("v2:setup") ?? false)).toBe("v1:setup\nv1:cleanup\nv2:setup\n")
+
+  process.emit("SIGHUP")
+  await app.task
+})
+
+test("a plugin whose slot render throws does not take down the TUI", async () => {
+  await using tmp = await tmpdir()
+  const directory = path.join(tmp.path, ".opencode", "plugins", "tui")
+  await mkdir(directory, { recursive: true })
+  const markerA = path.join(tmp.path, "a.txt")
+  const markerCrash = path.join(tmp.path, "crash.txt")
+  const sourceA = path.join(directory, "a.ts")
+  await writeFile(sourceA, lifecycleSource(markerA, "test.a", "a1"))
+  await writeFile(
+    path.join(directory, "crash.ts"),
+    `
+import { appendFile } from "node:fs/promises"
+export default {
+  id: "test.crash",
+  setup: async (context: any) => {
+    context.ui.slot("home.footer", () => {
+      throw new Error("boom")
+    })
+    await appendFile(${JSON.stringify(markerCrash)}, "setup\\n")
+  },
+}
+`,
+  )
+
+  await using app = await bootApp(tmp.path)
+  const readA = () => readFile(markerA, "utf8")
+  expect(await until(readA, (value) => value === "a1:setup\n")).toBe("a1:setup\n")
+  // The crashing plugin genuinely loaded and registered its slot; without
+  // this the rest of the test would pass even if it never imported.
+  expect(await until(() => readFile(markerCrash, "utf8"), (value) => value === "setup\n")).toBe("setup\n")
+
+  // The app survives the crashing slot: hot reload still works for others.
+  // The render-time boundary itself (fallback + toast) is not exercisable
+  // here: the test renderer never executes slot render bodies, so render
+  // containment is verified in the real TUI (see PluginBoundary in
+  // src/plugin/render.tsx and the demo runs on the PR).
+  await writeFile(sourceA, lifecycleSource(markerA, "test.a", "a2"))
+  expect(await until(readA, (value) => value?.includes("a2:setup") ?? false)).toBe("a1:setup\na1:cleanup\na2:setup\n")
+
+  process.emit("SIGHUP")
+  await app.task
+})
+
+test("editing one plugin leaves others untouched and a broken save keeps the last good version", async () => {
+  await using tmp = await tmpdir()
+  const directory = path.join(tmp.path, ".opencode", "plugins", "tui")
+  await mkdir(directory, { recursive: true })
+  const markerA = path.join(tmp.path, "a.txt")
+  const markerB = path.join(tmp.path, "b.txt")
+  const sourceA = path.join(directory, "a.ts")
+  const sourceB = path.join(directory, "b.ts")
+  await writeFile(sourceA, lifecycleSource(markerA, "test.a", "a1"))
+  await writeFile(sourceB, lifecycleSource(markerB, "test.b", "b1"))
+
+  await using app = await bootApp(tmp.path)
+  const readA = () => readFile(markerA, "utf8")
+  const readB = () => readFile(markerB, "utf8")
+  await until(readA, (value) => value === "a1:setup\n")
+  await until(readB, (value) => value === "b1:setup\n")
+
+  // Editing B restarts only B: A sees no cleanup and no second setup.
+  await writeFile(sourceB, lifecycleSource(markerB, "test.b", "b2"))
+  expect(await until(readB, (value) => value?.includes("b2:setup") ?? false)).toBe("b1:setup\nb1:cleanup\nb2:setup\n")
+  expect(await readA()).toBe("a1:setup\n")
+
+  // A broken save keeps the last good version running: b2 is never cleaned
+  // up. Editing A afterwards provides a positive completion signal — once
+  // A's swap lands, the serialized reconcile has processed the broken save.
+  await writeFile(sourceB, "export default {")
+  await writeFile(sourceA, lifecycleSource(markerA, "test.a", "a2"))
+  expect(await until(readA, (value) => value?.includes("a2:setup") ?? false)).toBe("a1:setup\na1:cleanup\na2:setup\n")
+  expect(await readB()).toBe("b1:setup\nb1:cleanup\nb2:setup\n")
+
+  // Fixing the file replaces the kept version and leaves A alone.
+  await writeFile(sourceB, lifecycleSource(markerB, "test.b", "b3"))
+  expect(await until(readB, (value) => value?.includes("b3:setup") ?? false)).toBe(
+    "b1:setup\nb1:cleanup\nb2:setup\nb2:cleanup\nb3:setup\n",
+  )
+  expect(await readA()).toBe("a1:setup\na1:cleanup\na2:setup\n")
+
+  process.emit("SIGHUP")
+  await app.task
+})
+
+test("a save whose setup throws restores the previous version", async () => {
+  await using tmp = await tmpdir()
+  const directory = path.join(tmp.path, ".opencode", "plugins", "tui")
+  await mkdir(directory, { recursive: true })
+  const marker = path.join(tmp.path, "a.txt")
+  const source = path.join(directory, "a.ts")
+  await writeFile(source, lifecycleSource(marker, "test.a", "a1"))
+
+  await using app = await bootApp(tmp.path)
+  const read = () => readFile(marker, "utf8")
+  expect(await until(read, (value) => value === "a1:setup\n")).toBe("a1:setup\n")
+
+  // The module imports fine but its setup throws — unlike an import failure,
+  // the swap has already torn down a1, so keep-last-good means restoring it.
+  await writeFile(
+    source,
+    `
+export default {
+  id: "test.a",
+  setup: async () => {
+    throw new Error("setup boom")
+  },
+}
+`,
+  )
+  expect(await until(read, (value) => value === "a1:setup\na1:cleanup\na1:setup\n")).toBe(
+    "a1:setup\na1:cleanup\na1:setup\n",
+  )
+
+  // Fixing the file swaps out the restored version normally.
+  await writeFile(source, lifecycleSource(marker, "test.a", "a2"))
+  expect(await until(read, (value) => value?.includes("a2:setup") ?? false)).toBe(
+    "a1:setup\na1:cleanup\na1:setup\na1:cleanup\na2:setup\n",
+  )
+
+  process.emit("SIGHUP")
+  await app.task
+})
+
+test("editing a symlinked plugin's target hot-reloads it", async () => {
+  await using tmp = await tmpdir()
+  const directory = path.join(tmp.path, ".opencode", "plugins", "tui")
+  await mkdir(directory, { recursive: true })
+  const marker = path.join(tmp.path, "a.txt")
+  // The real source lives outside the discovery directory; only a symlink
+  // is discovered. Edits land at the target, which emits no event in the
+  // plugin directory itself.
+  const target = path.join(tmp.path, "elsewhere", "a.ts")
+  await mkdir(path.dirname(target), { recursive: true })
+  await writeFile(target, lifecycleSource(marker, "test.a", "a1"))
+  await symlink(target, path.join(directory, "a.ts"))
+
+  await using app = await bootApp(tmp.path)
+  const read = () => readFile(marker, "utf8")
+  expect(await until(read, (value) => value === "a1:setup\n")).toBe("a1:setup\n")
+
+  await writeFile(target, lifecycleSource(marker, "test.a", "a2"))
+  expect(await until(read, (value) => value?.includes("a2:setup") ?? false)).toBe("a1:setup\na1:cleanup\na2:setup\n")
+
+  process.emit("SIGHUP")
+  await app.task
+})
+
+test("memory storage survives hot reload while disk storage persists", async () => {
+  await using tmp = await tmpdir()
+  const directory = path.join(tmp.path, ".opencode", "plugins", "tui")
+  await mkdir(directory, { recursive: true })
+  const marker = path.join(tmp.path, "counter.txt")
+  const source = path.join(directory, "counter.ts")
+  const counterSource = (note: string) => `
+import { appendFile } from "node:fs/promises"
+// ${note}
+export default {
+  id: "test.counter",
+  setup: async (context: any) => {
+    const [state, update] = context.storage.memory("counter", { initial: { count: 0 } })
+    update((draft: any) => {
+      draft.count += 1
+    })
+    await appendFile(${JSON.stringify(marker)}, "count:" + state.count + "\\n")
+  },
+}
+`
+  await writeFile(source, counterSource("v1"))
+
+  await using app = await bootApp(tmp.path)
+  const read = () => readFile(marker, "utf8")
+  expect(await until(read, (value) => value === "count:1\n")).toBe("count:1\n")
+
+  // The reloaded generation shares the same live store: the count continues.
+  await writeFile(source, counterSource("v2"))
+  expect(await until(read, (value) => value?.includes("count:2") ?? false)).toBe("count:1\ncount:2\n")
+
+  process.emit("SIGHUP")
+  await app.task
+})
@@ -0,0 +1,30 @@
+import { writeFile } from "node:fs/promises"
+import path from "node:path"
+import { pathToFileURL } from "node:url"
+import { expect, test } from "bun:test"
+import { freshSpecifier, localSource } from "../src/plugin/discovery"
+import { tmpdir } from "./fixture/fixture"
+
+test("localSource resolves file URLs and local paths but not package specs", () => {
+  const base = process.cwd()
+  const absolute = path.resolve(base, "abs", "plugin.ts")
+  expect(localSource("file:///tmp/plugin.ts", base)?.href).toBe("file:///tmp/plugin.ts")
+  expect(localSource("./plugin.ts", base)?.href).toBe(pathToFileURL(path.join(base, "plugin.ts")).href)
+  expect(localSource("../plugin.ts", path.join(base, "nested"))?.href).toBe(
+    pathToFileURL(path.join(base, "plugin.ts")).href,
+  )
+  expect(localSource(absolute, base)?.href).toBe(pathToFileURL(absolute).href)
+  expect(localSource("some-package", base)).toBeUndefined()
+  expect(localSource("@scope/some-package", base)).toBeUndefined()
+})
+
+test("freshSpecifier re-imports a plugin source after it changes", async () => {
+  await using tmp = await tmpdir()
+  const file = path.join(tmp.path, "plugin.ts")
+  await writeFile(file, "export default 1")
+  const first: { readonly default?: unknown } = await import(freshSpecifier(pathToFileURL(file).href, 1))
+  await writeFile(file, "export default 2")
+  const second: { readonly default?: unknown } = await import(freshSpecifier(pathToFileURL(file).href, 2))
+  expect(first.default).toBe(1)
+  expect(second.default).toBe(2)
+})
@@ -111,7 +111,7 @@ Configure image normalization in `opencode.json` or `opencode.jsonc`:
 ```jsonc title="opencode.jsonc"
 {
  "$schema": "https://opencode.ai/config.json",
-  "attachments": {
+  "media": {
    "image": {
      "auto_resize": true,
      "max_width": 2000,
@@ -177,7 +177,7 @@ and plugin options.
 | `ctx.integration`      | `list`, `get`, `connect`, `attempt`, `transform`, `reload`, and connection lookup/resolution |
 | `ctx.plugin`           | `list` currently active plugin IDs                                                           |
 | `ctx.reference`        | `list`, `transform`, `reload`                                                                |
-| `ctx.session`          | `create`, `get`, `prompt`, `command`, `synthetic`, `interrupt`, and `hook`                   |
+| `ctx.session`          | `create`, `get`, `prompt`, `command`, `rename`, `synthetic`, `interrupt`, `wait`, and `hook`  |
 | `ctx.skill`            | `list`, `transform`, `reload`                                                                |
 | `ctx.tool`             | `transform` and `hook`                                                                       |
 | `ctx.aisdk`            | `hook`                                                                                       |
@@ -267,14 +267,14 @@ this field, but it does not start language servers yet.

 See the [LSP guide](/lsp) for accepted fields and current limitations.

-### Attachments
+### Media

 Control how oversized images loaded by the `read` tool are resized or rejected
 before they are sent to a model.

 ```jsonc
 {
-  "attachments": {
+  "media": {
    "image": {
      "auto_resize": true,
      "max_width": 2000,
@@ -175,16 +175,16 @@ Rename the singular `snapshot` field to `snapshots`. Its boolean value does not
 { "snapshots": false }
 ```

-### Attachments
+### Media

-Rename the singular `attachment` object to `attachments`. Nested image settings keep the same names:
+Rename the singular `attachment` object to `media`. Nested image settings keep the same names:

 ```jsonc
 // V1
 { "attachment": { "image": { "auto_resize": true } } }

 // V2
-{ "attachments": { "image": { "auto_resize": true } } }
+{ "media": { "image": { "auto_resize": true } } }
 ```

 ### MCP servers
Author	SHA1	Message	Date
Aiden Cline	a214ac39de	refactor(ai): unify prompt cache configuration	2026-07-31 17:52:32 -05:00
Aiden Cline	f6ea6b1762	refactor(ai): promote prompt cache key	2026-07-31 16:59:24 -05:00
opencode-agent[bot]	56c6add5c3	refactor(core): remove unused helpers (#39943 ) Co-authored-by: Aiden Cline <rekram1-node@users.noreply.github.com>	2026-07-31 16:17:14 -05:00
Kit Langton	2cfe8883ea	feat(plugin): expose session rename and wait to plugins (#39932 )	2026-07-31 21:08:33 +00:00
Kit Langton	102086c50f	feat(tui): hot-reload local TUI plugins (#39776 )	2026-07-31 16:35:05 -04:00
Kit Langton	06e26d89ad	feat(protocol): accept title on session create (#39935 )	2026-07-31 19:39:54 +00:00
Aiden Cline	84dd56ed34	fix(core): bound outbound image history (#39929 )	2026-07-31 13:57:04 -05:00
opencode-agent[bot]	f92e490bb6	fix(tui): preserve diff hunk boundaries (#39693 ) Co-authored-by: James Long <17031+jlongster@users.noreply.github.com>	2026-07-31 14:47:36 -04:00
Kit Langton	0481dba88e	fix(tui): improve narrow layouts (#39918 )	2026-07-31 14:44:13 -04:00
Kit Langton	dd0e41c633	fix(tui): render plugin slots and routes with component semantics (#39917 )	2026-07-31 14:30:57 -04:00
opencode-agent[bot]	b69e51d835	refactor(ai): simplify provider options (#39924 ) Co-authored-by: Aiden Cline <63023139+rekram1-node@users.noreply.github.com>	2026-07-31 13:27:32 -05:00
opencode-agent[bot]	e60e8d9387	refactor(core): rename attachments config to media (#39927 ) Co-authored-by: Aiden Cline <rekram1-node@users.noreply.github.com>	2026-07-31 13:26:53 -05:00
Kit Langton	3bfce3fd2d	feat(tui): expand pasted text (#39920 )	2026-07-31 18:17:35 +00:00
Aiden Cline	b498a5c6c4	feat(ai): expand OpenRouter native support (#39907 )	2026-07-31 12:57:18 -05:00
Kit Langton	db9e942398	fix(core): resize large image attachments (#39919 )	2026-07-31 13:24:05 -04:00