fix(app): use custom composer scrollbar

2026-07-31 15:34:02 -04:00 · 2026-07-31 10:11:43 +00:00
61 changed files with 351 additions and 860 deletions
@@ -67,7 +67,6 @@
        "@opencode-ai/sdk": "file:vendor/opencode-ai-sdk-1.18.8-dev.tgz",
        "@opencode-ai/session-ui": "workspace:*",
        "@opencode-ai/ui": "workspace:*",
-        "@opencode-ai/util": "workspace:*",
        "@pierre/trees": "1.0.0-beta.4",
        "@sentry/solid": "catalog:",
        "@shikijs/transformers": "3.9.2",
@@ -521,7 +520,6 @@
        "@opencode-ai/core": "workspace:*",
        "@opencode-ai/session-ui": "workspace:*",
        "@opencode-ai/ui": "workspace:*",
-        "@opencode-ai/util": "workspace:*",
        "@pierre/diffs": "catalog:",
        "@solidjs/meta": "catalog:",
        "@solidjs/router": "catalog:",
@@ -107,7 +107,6 @@ export const bodyFields = {
  stream_options: Schema.optional(Schema.Struct({ include_usage: Schema.Boolean })),
  store: Schema.optional(Schema.Boolean),
  reasoning_effort: Schema.optional(OpenAIOptions.OpenAIReasoningEffort),
-  max_completion_tokens: Schema.optional(Schema.Number),
  max_tokens: Schema.optional(Schema.Number),
  temperature: Schema.optional(Schema.Number),
  top_p: Schema.optional(Schema.Number),
@@ -416,7 +415,6 @@ const fromRequest = Effect.fn("OpenAIChat.fromRequest")(function* (request: LLMR
    )
  const generation = request.generation
  const toolSchemaCompatibility = request.model.compatibility?.toolSchema
-  const maxTokensField = request.model.compatibility?.maxTokensField ?? "max_tokens"
  return {
    model: request.model.id,
    messages: yield* lowerMessages(request),
@@ -429,9 +427,7 @@ const fromRequest = Effect.fn("OpenAIChat.fromRequest")(function* (request: LLMR
    tool_choice: request.toolChoice ? yield* lowerToolChoice(request.toolChoice) : undefined,
    stream: true as const,
    stream_options: { include_usage: true },
-    ...(maxTokensField === "max_completion_tokens"
-      ? { max_completion_tokens: generation?.maxTokens }
-      : { max_tokens: generation?.maxTokens }),
+    max_tokens: generation?.maxTokens,
    temperature: generation?.temperature,
    top_p: generation?.topP,
    frequency_penalty: generation?.frequencyPenalty,
@@ -6,7 +6,6 @@ export interface Settings extends Readonly<Record<string, unknown>> {
  readonly body?: Readonly<Record<string, unknown>>
  readonly limits?: {
    readonly context: number
-    readonly input?: number
    readonly output: number
  }
 }
@@ -28,9 +28,57 @@ const applyQuery = (url: string, query: Record<string, string> | undefined) => {
  return next.toString()
 }

+const PROTOCOL_BODY_OVERLAY_DENYLIST = new Set([
+  "anthropic_version",
+  "content",
+  "contents",
+  "frequencyPenalty",
+  "frequency_penalty",
+  "generationConfig",
+  "inferenceConfig",
+  "input",
+  "maxTokens",
+  "max_tokens",
+  "messages",
+  "model",
+  "presencePenalty",
+  "presence_penalty",
+  "responseFormat",
+  "response_format",
+  "seed",
+  "stop",
+  "stopSequences",
+  "stop_sequences",
+  "stream",
+  "streamOptions",
+  "stream_options",
+  "system",
+  "systemInstruction",
+  "system_instruction",
+  "temperature",
+  "thinking",
+  "toolChoice",
+  "toolConfig",
+  "tool_choice",
+  "tool_config",
+  "tools",
+  "topK",
+  "topP",
+  "top_k",
+  "top_p",
+])
+
+const forbiddenBodyOverlayKeys = (body: Record<string, unknown>) =>
+  Object.keys(body).filter((key) => PROTOCOL_BODY_OVERLAY_DENYLIST.has(key))
+
 const bodyWithOverlay = <Body>(body: Body, request: LLMRequest, encodeBody: (body: Body) => string) =>
  Effect.gen(function* () {
    if (request.http?.body === undefined) return { jsonBody: body, bodyText: encodeBody(body) }
+    const forbiddenKeys = forbiddenBodyOverlayKeys(request.http.body)
+    if (forbiddenKeys.length > 0)
+      return yield* ProviderShared.invalidRequest(
+        `http.body cannot overlay protocol-owned field(s): ${forbiddenKeys.join(", ")}`,
+      )
    if (ProviderShared.isRecord(body)) {
      const overlaid = mergeJsonRecords(body, request.http.body) ?? {}
      return { jsonBody: overlaid, bodyText: ProviderShared.encodeJson(overlaid) }
@@ -123,7 +123,6 @@ export const mergeGenerationOptions = (...items: ReadonlyArray<GenerationOptions

 export class ModelLimits extends Schema.Class<ModelLimits>("LLM.ModelLimits")({
  context: Schema.optional(Schema.Number),
-  input: Schema.optional(Schema.Number),
  output: Schema.optional(Schema.Number),
 }) {}

@@ -167,13 +166,9 @@ export namespace ModelDefaults {
 export const ModelToolSchemaCompatibility = Schema.Literals(["gemini", "moonshot"])
 export type ModelToolSchemaCompatibility = Schema.Schema.Type<typeof ModelToolSchemaCompatibility>

-export const ModelMaxTokensFieldCompatibility = Schema.Literals(["max_completion_tokens", "max_tokens"])
-export type ModelMaxTokensFieldCompatibility = Schema.Schema.Type<typeof ModelMaxTokensFieldCompatibility>
-
 export class ModelCompatibility extends Schema.Class<ModelCompatibility>("LLM.ModelCompatibility")({
  toolSchema: Schema.optional(ModelToolSchemaCompatibility),
  reasoningField: Schema.optional(Schema.String),
-  maxTokensField: Schema.optional(ModelMaxTokensFieldCompatibility),
 }) {}

 export namespace ModelCompatibility {
@@ -171,27 +171,24 @@ describe("request option precedence", () => {
    ),
  )

-  it.effect("applies raw body overlays after protocol lowering", () =>
-    LLMClient.generate(
-      LLM.request({
-        model: OpenAIChat.route
-          .with({ endpoint: { baseURL: "https://api.openai.test/v1/" }, auth: Auth.bearer("test") })
-          .model({ id: "gpt-4o-mini" }),
-        prompt: "Say hello.",
-        http: { body: { model: "gpt-5", messages: [], tools: [] } },
-      }),
-    ).pipe(
-      Effect.provide(
-        dynamicResponse((input) =>
-          Effect.gen(function* () {
-            expect(decodeJson(input.text)).toMatchObject({ model: "gpt-5", messages: [], tools: [] })
-            return input.respond(sseEvents(deltaChunk({}, "stop")), {
-              headers: { "content-type": "text/event-stream" },
-            })
-          }),
-        ),
-      ),
-    ),
+  it.effect("rejects raw body overlays for protocol-owned roots", () =>
+    Effect.gen(function* () {
+      const model = OpenAIChat.route
+        .with({ endpoint: { baseURL: "https://api.openai.test/v1/" }, auth: Auth.bearer("test") })
+        .model({ id: "gpt-4o-mini" })
+      const error = yield* compileRequest(
+        LLM.request({
+          model,
+          prompt: "Say hello.",
+          http: { body: { model: "gpt-5", messages: [], tools: [] } },
+        }),
+      ).pipe(Effect.flip)
+
+      expect(error.reason).toMatchObject({
+        _tag: "InvalidRequest",
+        message: "http.body cannot overlay protocol-owned field(s): model, messages, tools",
+      })
+    }),
  )

  it.effect("uses model output limits after route limits and before call maxTokens", () =>
@@ -181,6 +181,23 @@ describe("Google Vertex providers", () => {
    }),
  )

+  it.effect("protects the Vertex Messages API version from body overlays", () =>
+    Effect.gen(function* () {
+      const error = yield* compileRequest(
+        LLM.request({
+          model: GoogleVertexMessages.configure({
+            accessToken: "vertex-token",
+            http: { body: { anthropic_version: "wrong" } },
+            project: "vertex-project",
+          }).model("claude-sonnet-4-6"),
+          prompt: "Say hello.",
+        }),
+      ).pipe(Effect.flip)
+
+      expect(error.message).toContain("http.body cannot overlay protocol-owned field(s): anthropic_version")
+    }),
+  )
+
  it.effect("routes tuned Gemini models through their deployed endpoint", () =>
    Effect.gen(function* () {
      const response = yield* LLMClient.generate(
@@ -144,20 +144,6 @@ describe("OpenAI-compatible Chat route", () => {
    }),
  )

-  it.effect("configures the max tokens request field", () =>
-    Effect.gen(function* () {
-      const compatible = OpenAICompatibleChat.route
-        .with({ provider: "custom", endpoint: { baseURL: "https://api.custom.test/v1" } })
-        .model({ id: "custom-model", compatibility: { maxTokensField: "max_completion_tokens" } })
-      const prepared = yield* compileRequest(
-        LLM.request({ model: compatible, prompt: "Say hello.", generation: { maxTokens: 20 } }),
-      )
-
-      expect(prepared.body).toMatchObject({ max_completion_tokens: 20 })
-      expect(prepared.body).not.toHaveProperty("max_tokens")
-    }),
-  )
-
  it.effect("matches AI SDK compatible tool request body fixture", () =>
    Effect.gen(function* () {
      const prepared = yield* compileRequest(
@@ -59,7 +59,6 @@
    "@opencode-ai/sdk": "file:vendor/opencode-ai-sdk-1.18.8-dev.tgz",
    "@opencode-ai/session-ui": "workspace:*",
    "@opencode-ai/ui": "workspace:*",
-    "@opencode-ai/util": "workspace:*",
    "@pierre/trees": "1.0.0-beta.4",
    "@sentry/solid": "catalog:",
    "@shikijs/transformers": "3.9.2",
@@ -4,7 +4,6 @@ import { createResizeObserver } from "@solid-primitives/resize-observer"
 import { createMutation } from "@tanstack/solid-query"
 import { IconButtonV2 } from "@opencode-ai/ui/v2/icon-button-v2"
 import { Icon as IconV2 } from "@opencode-ai/ui/v2/icon"
-import { displayLabel } from "@opencode-ai/util/session-title-fallback"
 import { useGlobal } from "@/context/global"
 import { ServerConnection, serverName } from "@/context/server"
 import { displayName, projectForSession } from "@/pages/layout/helpers"
@@ -12,6 +11,7 @@ import { SessionTabAvatar } from "@/pages/layout/session-tab-avatar"
 import type { Session } from "@opencode-ai/sdk/v2"
 import { canOpenTabRename, forwardTabRef } from "./titlebar-tab-gesture"
 import { TabPreviewPopover } from "./titlebar-tab-popover"
+import { sessionTitle } from "@/utils/session-title"
 import "./titlebar-tab-nav.css"

 // MouseEvent.button uses 1 for the middle/wheel button.
@@ -57,7 +57,7 @@ export function TabNavItem(props: {
  })
  const title = createMemo(() => {
    const session = props.session()
-    return session ? displayLabel(session) : props.fallbackTitle
+    return session ? sessionTitle(session.title, session.parentID) : props.fallbackTitle
  })

  const projectName = createMemo(() => {
@@ -3,11 +3,11 @@ import { useLanguage } from "@/context/language"
 import { serverName } from "@/context/server"
 import { displayName } from "@/pages/layout/helpers"
 import { makeEventListener } from "@solid-primitives/event-listener"
-import { displayLabel } from "@opencode-ai/util/session-title-fallback"
 import { createMemo, onCleanup } from "solid-js"
 import { createStore } from "solid-js/store"
 import type { HomeController } from "./home-controller"
 import { homeSessionSearchKey, type HomeSessionRecord, type HomeSessionsController } from "./home-sessions-controller"
+import { sessionTitle } from "@/utils/session-title"

 type HomeSessionSearchSource = Pick<HomeSessionsController, "data" | "session">

@@ -24,7 +24,7 @@ export function createHomeSessionSearchController(home: HomeController, sessions
    if (!value) return []
    return sessions.data
      .searchRecords()
-      .filter((record) => `${displayLabel(record.session)} ${record.projectName}`.toLowerCase().includes(value))
+      .filter((record) => `${sessionTitle(record.session.title)} ${record.projectName}`.toLowerCase().includes(value))
  })
  const active = createMemo(() => {
    const records = results()
@@ -6,10 +6,10 @@ import { ButtonV2 } from "@opencode-ai/ui/v2/button-v2"
 import { Icon as IconV2 } from "@opencode-ai/ui/v2/icon"
 import { IconButtonV2 } from "@opencode-ai/ui/v2/icon-button-v2"
 import { TooltipV2 } from "@opencode-ai/ui/v2/tooltip-v2"
-import { displayLabel } from "@opencode-ai/util/session-title-fallback"
 import { useLanguage } from "@/context/language"
 import { ServerConnection } from "@/context/server"
 import { SessionTabAvatarView } from "@/pages/layout/session-tab-avatar"
+import { sessionTitle } from "@/utils/session-title"
 import { shouldOpenSessionInBackground } from "../home-session-open"
 import {
  HomeSessionStatusController,
@@ -344,7 +344,7 @@ function HomeSessionSearchResultRow(
    selected: boolean
  },
 ) {
-  const title = createMemo(() => displayLabel(props.record.session))
+  const title = createMemo(() => sessionTitle(props.record.session.title) || props.record.session.id)
  const showProjectName = () => props.showProjectName() && props.record.projectName
  const key = () => homeSessionSearchKey(props.record)

@@ -415,7 +415,7 @@ function HomeSessionGroupHeader(props: {
 }

 function HomeSessionRow(props: HomeSessionsViewProps & { record: HomeSessionRecord }) {
-  const title = createMemo(() => displayLabel(props.record.session))
+  const title = createMemo(() => sessionTitle(props.record.session.title) || props.record.session.id)
  const showProjectName = () => props.showProjectName() && props.record.projectName

  return (
@@ -5,7 +5,6 @@ import { Icon as IconV2 } from "@opencode-ai/ui/v2/icon"
 import { IconButton } from "@opencode-ai/ui/icon-button"
 import { Spinner } from "@opencode-ai/ui/spinner"
 import { Tooltip } from "@opencode-ai/ui/tooltip"
-import { displayLabel } from "@opencode-ai/util/session-title-fallback"
 import { getFilename } from "@opencode-ai/core/util/path"
 import { A, useParams } from "@solidjs/router"
 import { type Accessor, createMemo, For, type JSX, Match, Show, Switch } from "solid-js"
@@ -15,6 +14,7 @@ import { getAvatarColors, type LocalProject, useLayout } from "@/context/layout"
 import { useNotification } from "@/context/notification"
 import { usePermission } from "@/context/permission"
 import { messageAgentColor } from "@/utils/agent"
+import { sessionTitle } from "@/utils/session-title"
 import { sessionPermissionRequest } from "../session/composer/session-request-tree"
 import { childSessionOnPath, getProjectAvatarSource, hasProjectPermissions } from "./helpers"

@@ -104,7 +104,7 @@ const SessionRow = (props: {
  warmPress: () => void
  warmFocus: () => void
 }): JSX.Element => {
-  const title = () => displayLabel(props.session)
+  const title = () => sessionTitle(props.session.title, props.session.parentID)

  return (
    <A
@@ -229,7 +229,7 @@ export const SessionItem = (props: SessionItemProps): JSX.Element => {
              fallback={
                <Tooltip
                  placement={props.mobile ? "bottom" : "right"}
-                  value={displayLabel(props.session)}
+                  value={sessionTitle(props.session.title, props.session.parentID)}
                  gutter={10}
                  class="min-w-0 w-full"
                >
@@ -70,7 +70,7 @@ import { legacySessionHref, requireServerKey, sessionHref } from "@/utils/sessio
 import { useSDK } from "@/context/sdk"
 import { useSync } from "@/context/sync"
 import { notifySessionTabsRemoved } from "@/components/titlebar-session-events"
-import { displayLabel } from "@opencode-ai/util/session-title-fallback"
+import { sessionTitle } from "@/utils/session-title"
 import { scheduleConnectedMeasure } from "./measure"
 import { observeElementOffsetReconnectAware } from "./observe-element-offset"
 import { createTimelineProjection } from "./projection"
@@ -296,10 +296,11 @@ export function MessageTimeline(props: {
    if (!id) return
    return sync().session.get(id)
  })
+  const titleValue = createMemo(() => info()?.title)
  const titleLabel = createMemo(() => {
    const session = info()
    if (!session) return
-    return displayLabel(session)
+    return sessionTitle(titleValue(), session.parentID)
  })
  const shareUrl = createMemo(() => info()?.share?.url)
  const shareEnabled = createMemo(() => sync().data.config.share !== "disabled")
@@ -316,7 +317,7 @@ export function MessageTimeline(props: {
  })
  const parentTitle = createMemo(() => {
    const session = parent()
-    return session ? displayLabel(session) : language.t("command.session.new")
+    return session ? sessionTitle(session.title, session.parentID) : language.t("command.session.new")
  })
  const getMsgParts = (msgId: string) => sync().data.part[msgId] ?? emptyParts
  const getMsgPart = (messageID: string, partID: string) => getMsgParts(messageID).find((part) => part.id === partID)
@@ -920,7 +921,7 @@ export function MessageTimeline(props: {
  function DialogDeleteSession(props: { sessionID: string }) {
    const name = createMemo(() => {
      const session = sync().session.get(props.sessionID)
-      return session ? displayLabel(session) : language.t("command.session.new")
+      return session ? sessionTitle(session.title, session.parentID) : language.t("command.session.new")
    })
    const handleDelete = async () => {
      await deleteSession(props.sessionID)
@@ -38,19 +38,17 @@ test("reports a divergent native offset once and ignores equal offsets and unrel
    instance.scrollOffset = offset
  })

+  document.body.append(unrelated)
+  unrelated.remove()
+  await frames(2)
+  expect(calls).toEqual([])
+
  route.remove()
  document.body.append(route)
  await new Promise((resolve) => setTimeout(resolve, 0))
  await frames(3)
  expect(calls).toEqual([[0, false]])

-  instance.scrollOffset = 79_400
-  document.body.append(unrelated)
-  unrelated.remove()
-  await frames(2)
-  expect(calls).toEqual([[0, false]])
-
-  instance.scrollOffset = 0
  route.remove()
  document.body.append(route)
  await new Promise((resolve) => setTimeout(resolve, 0))
@@ -0,0 +1,11 @@
+import { describe, expect, test } from "bun:test"
+import { sessionTitle } from "./session-title"
+
+describe("sessionTitle", () => {
+  test("uses a display fallback without persisting it", () => {
+    expect(sessionTitle(undefined)).toBe("New session")
+    expect(sessionTitle(undefined, "ses_parent")).toBe("Child session")
+    expect(sessionTitle("New session - 2026-07-30T18:45:03.662Z")).toBe("New session")
+    expect(sessionTitle("Generated title")).toBe("Generated title")
+  })
+})
@@ -0,0 +1,7 @@
+const pattern = /^(New session|Child session) - \d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z$/
+
+export function sessionTitle(title?: string, parentID?: string) {
+  if (!title) return parentID ? "Child session" : "New session"
+  const match = title.match(pattern)
+  return match?.[1] ?? title
+}
@@ -1,6 +1,5 @@
 import type { SessionApi, SessionInfo, SessionListInput } from "@opencode-ai/client/promise"
 import type { Session } from "@opencode-ai/sdk/v2/client"
-import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"

 export function normalizeSessionInfo(input: SessionInfo | Session): Session {
  if (!("location" in input)) return input
@@ -14,7 +13,7 @@ export function normalizeSessionInfo(input: SessionInfo | Session): Session {
    parentID: input.parentID,
    cost: input.cost,
    tokens: input.tokens,
-    title: withTimestampedFallback(input),
+    title: input.title ?? `${input.parentID ? "Child" : "New"} session - ${new Date(input.time.created).toISOString()}`,
    agent: input.agent,
    model: input.model,
    version: "",
@@ -58,9 +58,8 @@ export async function collectNodeAssets(target: NodeTarget) {
        source: path.join(ptyRoot, relative),
      })),
  ]
-  const unique = [...new Map(assets.map((asset) => [asset.key, asset])).values()]
-  await Promise.all(unique.map((asset) => stat(asset.source)))
-  return unique
+  await Promise.all(assets.map((asset) => stat(asset.source)))
+  return assets
 }

 export async function hashNodeAssets(assets: readonly NodeAsset[]) {
@@ -8,7 +8,6 @@ import {
  type SessionMessageInfo,
  type SkillInfo,
 } from "@opencode-ai/client/promise"
-import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"
 import type {
  AgentSideConnection,
  AuthenticateRequest,
@@ -214,7 +213,9 @@ export function make(input: { readonly client: OpenCodeClient; readonly connecti
        sessions: page.data.map((session) => ({
          sessionId: session.id,
          cwd: session.location.directory,
-          title: withTimestampedFallback(session),
+          title:
+            session.title ??
+            `${session.parentID ? "Child" : "New"} session - ${new Date(session.time.created).toISOString()}`,
          updatedAt: new Date(session.time.updated).toISOString(),
        })),
        ...(page.cursor.next ? { nextCursor: page.cursor.next } : {}),
@@ -1,17 +0,0 @@
-import { expect, test } from "bun:test"
-import { fileURLToPath } from "node:url"
-import { collectNodeAssets } from "../script/node-assets"
-import { nodeTarget, shellParserWasmAssets } from "../src/node/target"
-
-test("collects each SEA asset key once", async () => {
-  const assets = await collectNodeAssets(nodeTarget(process.platform, process.arch))
-  const keys = assets.map((asset) => asset.key)
-
-  expect(new Set(keys).size).toBe(keys.length)
-  expect(assets.filter((asset) => asset.key === shellParserWasmAssets.runtime)).toEqual([
-    {
-      key: shellParserWasmAssets.runtime,
-      source: fileURLToPath(import.meta.resolve(shellParserWasmAssets.runtime)),
-    },
-  ])
-})
@@ -332,7 +332,7 @@ function modelFromLanguage(info: Info, language: LanguageModelV3) {
              body: projected.body === undefined ? undefined : { ...projected.body },
              headers: info.headers,
            },
-      limits: { context: info.limit.context, input: info.limit.input, output: info.limit.output },
+      limits: { context: info.limit.context, output: info.limit.output },
      providerOptions,
    },
    body: {
@@ -81,7 +81,7 @@ const withDefaults = (model: Info, route: AnyRoute) =>
    headers: providerHeaders(model),
    providerOptions: providerOptions(model),
    http: model.body === undefined ? undefined : { body: model.body },
-    limits: { context: model.limit.context, input: model.limit.input, output: model.limit.output },
+    limits: { context: model.limit.context, output: model.limit.output },
  })

 const providerHeaders = (model: Info) => {
@@ -204,7 +204,7 @@ export const fromCatalogModel = (
      ...nativeCredentialSettings(specifier, credential),
      headers: resolved.headers,
      body: resolved.body,
-      limits: { context: resolved.limit.context, input: resolved.limit.input, output: resolved.limit.output },
+      limits: { context: resolved.limit.context, output: resolved.limit.output },
    }
    return yield* Effect.try({
      try: () => {
@@ -220,8 +220,12 @@ export const OpenAIPlugin = define({
            return
          }
          draft.cost = []
-          // Match Codex CLI so context consumption and subscription usage stay consistent between clients.
-          draft.limit = { ...draft.limit, context: 272_000, input: 272_000 }
+          if (draft.id.includes("gpt-5.5")) {
+            draft.limit = { context: 400_000, input: 272_000, output: 128_000 }
+          }
+          if (draft.id.includes("gpt-5.6")) {
+            draft.limit = { context: 500_000, input: 372_000, output: 128_000 }
+          }
        })
      }
    })
@@ -152,11 +152,14 @@ const settings = (documents: readonly Config.Entry[]) => {
  const configured = documents
    .filter((entry): entry is Config.Document => entry.type === "document")
    .flatMap((entry) => (entry.info.compaction ? [entry.info.compaction] : []))
-  return {
-    auto: configured.findLast((value) => value.auto !== undefined)?.auto ?? true,
-    buffer: configured.findLast((value) => value.buffer !== undefined)?.buffer ?? DEFAULT_BUFFER,
-    tokens: configured.findLast((value) => value.keep?.tokens !== undefined)?.keep?.tokens ?? DEFAULT_KEEP_TOKENS,
-  }
+  return configured.reduce<Settings>(
+    (result, current) => ({
+      auto: current.auto ?? result.auto,
+      buffer: current.buffer ?? result.buffer,
+      tokens: current.keep?.tokens ?? result.tokens,
+    }),
+    { auto: true, buffer: DEFAULT_BUFFER, tokens: DEFAULT_KEEP_TOKENS },
+  )
 }

 const select = (
@@ -347,16 +350,11 @@ const make = (dependencies: Dependencies) => {
        message.type === "assistant" && message.tokens !== undefined,
    )
    if (!last) return false
-    const limits = input.model.route.defaults.limits
-    const output = Math.min(limits?.output ?? 0, OUTPUT_TOKEN_MAX)
-    const promptCeiling = Math.min(
-      limits?.input === undefined ? Number.POSITIVE_INFINITY : limits.input - config.buffer,
-      context - Math.max(output, config.buffer),
-    )
+    const output = Math.min(input.model.route.defaults.limits?.output ?? 0, OUTPUT_TOKEN_MAX)
    const used =
      last.tokens.input + last.tokens.output + last.tokens.reasoning + last.tokens.cache.read + last.tokens.cache.write
    if (used <= 0) return false
-    return used >= promptCeiling
+    return used >= context - (output || config.buffer)
  }
  const compactManual = Effect.fn("SessionCompaction.compactManual")(function* (input: ManualInput) {
    const content = planContent(input.messages, config.tokens)
@@ -6,7 +6,6 @@ import { Agent } from "../agent"
 import { Database } from "../database/database"
 import { Bus } from "../bus"
 import { makeLocationNode } from "@opencode-ai/util/effect/app-node"
-import { isExactRootFallback } from "@opencode-ai/util/session-title-fallback"
 import { App } from "../app"
 import { llmClient } from "../effect/app-node-platform"
 import { SessionEvent } from "./event"
@@ -40,10 +39,7 @@ export class Service extends Context.Service<Service, Interface>()("@opencode/Se

 const truncate = (value: string) => (value.length <= MAX_LENGTH ? value : `${value.slice(0, MAX_LENGTH - 3)}...`)
 const isUntitled = (session: SessionSchema.Info) =>
-  isExactRootFallback({
-    title: session.title,
-    time: { created: DateTime.toEpochMillis(session.time.created) },
-  })
+  session.title === undefined || session.title === `New session - ${DateTime.formatIso(session.time.created)}`

 const make = (dependencies: Dependencies) => {
  const generateForFirstPrompt = Effect.fn("SessionTitle.generateForFirstPrompt")(function* (
@@ -17,7 +17,6 @@ interface ModelOptions {
  readonly headers?: Info["headers"]
  readonly body?: Info["body"]
  readonly variants?: Info["variants"]
-  readonly limit?: Info["limit"]
 }

 const model = (packageName: string | undefined, options: ModelOptions = {}) =>
@@ -37,7 +36,7 @@ const model = (packageName: string | undefined, options: ModelOptions = {}) =>
    cost: [],
    status: "active",
    enabled: true,
-    limit: options.limit ?? { context: 100, output: 20 },
+    limit: { context: 100, output: 20 },
  })

 describe("ModelResolver", () => {
@@ -45,7 +44,6 @@ describe("ModelResolver", () => {
    Effect.gen(function* () {
      const catalog = model(Provider.aisdk("@ai-sdk/openai"), {
        settings: { baseURL: "https://openai.example/v1" },
-        limit: { context: 100, input: 80, output: 20 },
      })
      const resolved = yield* ModelResolver.fromCatalogModel(catalog)

@@ -57,7 +55,7 @@ describe("ModelResolver", () => {
        endpoint: { baseURL: "https://openai.example/v1" },
        defaults: {
          headers: { "x-test": "header" },
-          limits: { context: 100, input: 80, output: 20 },
+          limits: { context: 100, output: 20 },
          http: { body: { custom_extension: { enabled: true } } },
        },
      })
@@ -74,9 +74,6 @@ describe("OpenAIPlugin", () => {
          ]
        })
        catalog.model.update(item.id, Model.ID.make("gpt-5.5-pro"), () => {})
-        catalog.model.update(item.id, Model.ID.make("gpt-5.4"), (model) => {
-          model.limit = { context: 1_050_000, input: 922_000, output: 64_000 }
-        })
        catalog.model.update(item.id, Model.ID.make("gpt-5.4-pro"), (model) => {
          model.modelID = Model.ID.make("gpt-5.4")
          model.body = { reasoning: { mode: "pro" } }
@@ -140,7 +137,7 @@ describe("OpenAIPlugin", () => {
      const eligible = required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.5")))
      expect(eligible.package).toBe("@opencode-ai/ai/providers/openai")
      expect(eligible.cost).toEqual([])
-      expect(eligible.limit).toEqual({ context: 272_000, input: 272_000, output: 128_000 })
+      expect(eligible.limit).toEqual({ context: 400_000, input: 272_000, output: 128_000 })
      expect(eligible.enabled).toBe(true)
      expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.5-pro"))).enabled).toBe(
        false,
@@ -148,15 +145,10 @@ describe("OpenAIPlugin", () => {
      expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.4-pro"))).enabled).toBe(
        false,
      )
-      expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.4"))).limit).toEqual({
-        context: 272_000,
-        input: 272_000,
-        output: 64_000,
-      })
      expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.6"))).enabled).toBe(false)
      const gpt56 = required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-5.6-sol")))
      expect(gpt56.enabled).toBe(true)
-      expect(gpt56.limit).toEqual({ context: 272_000, input: 272_000, output: 128_000 })
+      expect(gpt56.limit).toEqual({ context: 500_000, input: 372_000, output: 128_000 })
      expect(required(yield* catalog.model.get(Provider.ID.openai, Model.ID.make("gpt-4.1"))).enabled).toBe(false)
    }),
  )
@@ -19,11 +19,9 @@ import { Session } from "@opencode-ai/core/session"
 import { Project } from "@opencode-ai/core/project"
 import { ProjectTable } from "@opencode-ai/core/project/sql"
 import { App } from "@opencode-ai/core/app"
-import { Agent } from "@opencode-ai/core/agent"
-import { Location } from "@opencode-ai/core/location"
 import { AbsolutePath } from "@opencode-ai/core/schema"
 import { Money } from "@opencode-ai/schema/money"
-import { DateTime, Effect, Fiber, Layer, Schema, Stream } from "effect"
+import { DateTime, Effect, Fiber, Layer, Stream } from "effect"
 import { asc, eq } from "drizzle-orm"
 import { testEffect } from "./lib/effect"

@@ -132,52 +130,6 @@ test("compaction prompt requires the checkpoint headings in order", () => {
  expect(prompt).toContain("Keep every section, even when empty.")
 })

-it.effect("auto compaction reserves a buffer below the prompt ceiling", () =>
-  Effect.gen(function* () {
-    const compaction = yield* SessionCompaction.Service
-    const session = Session.Info.make({
-      id: Session.ID.make("ses_input_limit"),
-      projectID: Project.ID.global,
-      cost: Money.USD.zero,
-      tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
-      time: { created: DateTime.makeUnsafe(0), updated: DateTime.makeUnsafe(0) },
-      location: Location.Ref.make({ directory: AbsolutePath.make("/tmp") }),
-    })
-    const input = (tokens: number, limits: { context: number; input?: number; output: number }) => ({
-      session,
-      model: Model.make({
-        id: "test-model",
-        provider: "test-provider",
-        route: OpenAIChat.route.with({ limits }),
-      }),
-      cost: [],
-      messages: [
-        Schema.decodeUnknownSync(SessionMessage.Assistant)({
-          id: SessionMessage.ID.make("msg_assistant"),
-          type: "assistant",
-          agent: Agent.defaultID,
-          model: { id: "test-model", providerID: "test-provider" },
-          content: [],
-          tokens: { input: tokens, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
-          time: { created: 0, completed: 0 },
-        }),
-      ],
-    })
-
-    const inputLimited = { context: 400_000, input: 272_000, output: 128_000 }
-    expect(compaction.required(input(251_999, inputLimited))).toBe(false)
-    expect(compaction.required(input(252_000, inputLimited))).toBe(true)
-
-    const contextLimited = { context: 100_000, output: 10_000 }
-    expect(compaction.required(input(79_999, contextLimited))).toBe(false)
-    expect(compaction.required(input(80_000, contextLimited))).toBe(true)
-
-    const outputLimited = { context: 100_000, output: 30_000 }
-    expect(compaction.required(input(69_999, outputLimited))).toBe(false)
-    expect(compaction.required(input(70_000, outputLimited))).toBe(true)
-  }),
-)
-
 it.effect("manual compaction summarizes short context instead of no-op", () =>
  Effect.gen(function* () {
    requests = []
@@ -16,7 +16,6 @@
    "@opencode-ai/core": "workspace:*",
    "@opencode-ai/session-ui": "workspace:*",
    "@opencode-ai/ui": "workspace:*",
-    "@opencode-ai/util": "workspace:*",
    "aws4fetch": "^1.0.20",
    "@pierre/diffs": "catalog:",
    "@solidjs/router": "catalog:",
@@ -4,7 +4,6 @@ import { SessionReview } from "@opencode-ai/session-ui/session-review"
 import { DataProvider } from "@opencode-ai/session-ui/context"
 import { FileComponentProvider } from "@opencode-ai/ui/context/file"
 import { WorkerPoolProvider } from "@opencode-ai/ui/context/worker-pool"
-import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"
 import { createAsync, query, useParams } from "@solidjs/router"
 import { createMemo, createSignal, ErrorBoundary, For, Match, Show, Switch } from "solid-js"
 import { Share } from "~/core/share"
@@ -159,7 +158,11 @@ export default function () {
          const match = createMemo(() => Binary.search(data().session, data().sessionID, (s) => s.id))
          if (!match().found) throw new Error(`Session ${data().sessionID} not found`)
          const info = createMemo(() => data().session[match().index])
-          const title = createMemo(() => withTimestampedFallback(info()))
+          const title = createMemo(
+            () =>
+              info().title ??
+              `${info().parentID ? "Child" : "New"} session - ${new Date(info().time.created).toISOString()}`,
+          )
          const ogImage = createMemo(() => {
            const models = new Set<string>()
            const messages = data().message[data().sessionID] ?? []
@@ -26,27 +26,12 @@ 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> {
@@ -3,6 +3,7 @@ import { FileIcon } from "@opencode-ai/ui/file-icon"
 import { Icon } from "@opencode-ai/ui/icon"
 import { IconButton } from "@opencode-ai/ui/icon-button"
 import { ProviderIcon } from "@opencode-ai/ui/provider-icon"
+import { ScrollView } from "@opencode-ai/ui/scroll-view"
 import { ButtonV2 } from "@opencode-ai/ui/v2/button-v2"
 import { Icon as IconV2 } from "@opencode-ai/ui/v2/icon"
 import { IconButtonV2 } from "@opencode-ai/ui/v2/icon-button-v2"
@@ -140,44 +141,46 @@ export function PromptInputV2(props: PromptInputV2Props) {
        </Show>

        <div class="relative min-h-[60px]">
-          <div
-            ref={(element) => {
-              editor = element
-              props.controller.setEditor(element)
-              renderPromptInputV2Editor(element, props.controller.parts())
-            }}
-            data-component="prompt-input"
-            role="textbox"
-            aria-multiline="true"
-            aria-label="Prompt"
-            contenteditable={!props.disabled && !props.readOnly}
-            autocapitalize={state.mode === "normal" ? "sentences" : "off"}
-            autocorrect={state.mode === "normal" ? "on" : "off"}
-            spellcheck={state.mode === "normal"}
-            // @ts-expect-error
-            autocomplete="off"
-            class="relative z-10 block min-h-[60px] max-h-[180px] w-full overflow-y-auto whitespace-pre-wrap bg-transparent px-4 pt-4 pb-2 text-[13px] font-[440] leading-5 text-v2-text-text-base focus:outline-none empty:before:content-['\200B'] [&_[data-mention=file]]:text-syntax-property [&_[data-mention=agent]]:text-syntax-type [&_[data-mention=reference]]:text-syntax-keyword"
-            classList={{ "font-mono!": state.mode === "shell", "opacity-50": props.disabled }}
-            onInput={(event) => {
-              const cursor = promptInputV2Cursor(event.currentTarget)
-              const prompt = parsePromptInputV2Editor(event.currentTarget)
-              const images = props.controller.parts().filter((part) => part.type === "image")
-              localInput = true
-              props.controller.onInput(prompt.map((part) => part.content).join(""), [...prompt, ...images], cursor)
-            }}
-            onKeyDown={(event) => {
-              if (props.controller.onKeyDown(event)) return
-              if (event.key === "Enter" && !event.shiftKey && !event.isComposing) {
-                event.preventDefault()
-                if (event.repeat) return
-                props.controller.submit()
-              }
-            }}
-            onKeyUp={updateCursor}
-            onPointerUp={updateCursor}
-            onPaste={props.controller.onPaste}
-            onFocus={() => props.controller.dispatch({ type: "focus.editor" })}
-          />
+          <ScrollView class="min-h-[60px] max-h-[180px]">
+            <div
+              ref={(element) => {
+                editor = element
+                props.controller.setEditor(element)
+                renderPromptInputV2Editor(element, props.controller.parts())
+              }}
+              data-component="prompt-input"
+              role="textbox"
+              aria-multiline="true"
+              aria-label="Prompt"
+              contenteditable={!props.disabled && !props.readOnly}
+              autocapitalize={state.mode === "normal" ? "sentences" : "off"}
+              autocorrect={state.mode === "normal" ? "on" : "off"}
+              spellcheck={state.mode === "normal"}
+              // @ts-expect-error
+              autocomplete="off"
+              class="relative z-10 block min-h-[60px] w-full whitespace-pre-wrap bg-transparent px-4 pt-4 pb-2 text-[13px] font-[440] leading-5 text-v2-text-text-base focus:outline-none empty:before:content-['\200B'] [&_[data-mention=file]]:text-syntax-property [&_[data-mention=agent]]:text-syntax-type [&_[data-mention=reference]]:text-syntax-keyword"
+              classList={{ "font-mono!": state.mode === "shell", "opacity-50": props.disabled }}
+              onInput={(event) => {
+                const cursor = promptInputV2Cursor(event.currentTarget)
+                const prompt = parsePromptInputV2Editor(event.currentTarget)
+                const images = props.controller.parts().filter((part) => part.type === "image")
+                localInput = true
+                props.controller.onInput(prompt.map((part) => part.content).join(""), [...prompt, ...images], cursor)
+              }}
+              onKeyDown={(event) => {
+                if (props.controller.onKeyDown(event)) return
+                if (event.key === "Enter" && !event.shiftKey && !event.isComposing) {
+                  event.preventDefault()
+                  if (event.repeat) return
+                  props.controller.submit()
+                }
+              }}
+              onKeyUp={updateCursor}
+              onPointerUp={updateCursor}
+              onPaste={props.controller.onPaste}
+              onFocus={() => props.controller.dispatch({ type: "focus.editor" })}
+            />
+          </ScrollView>
          <Show when={!props.controller.value()}>
            <div
              class="pointer-events-none absolute inset-x-0 top-0 px-4 pt-4 text-[13px] font-[440] leading-5 text-v2-text-text-faint"
@@ -76,7 +76,7 @@ import { PromptHistoryProvider } from "./component/prompt/history"
 import { FrecencyProvider } from "./component/prompt/frecency"
 import { PromptStashProvider } from "./component/prompt/stash"
 import { Toast, ToastProvider, useToast } from "./ui/toast"
-import { isFallbackTitle } from "@opencode-ai/util/session-title-fallback"
+import { isDefaultTitle } from "./util/session"
 import * as Model from "./util/model"
 import { ArgsProvider, useArgs, type Args } from "./context/args"
 import open from "open"
@@ -537,7 +537,7 @@ function App(props: { pair?: DialogPairCredentials }) {

    if (route.data.type === "session") {
      const title = session?.title
-      if (!title || isFallbackTitle(title)) {
+      if (!title || isDefaultTitle(title)) {
        renderer.setTerminalTitle("OpenCode")
        return
      }
@@ -646,10 +646,7 @@ function App(props: { pair?: DialogPairCredentials }) {
        run: () => {
          route.navigate({
            type: "home",
-            location:
-              route.data.type === "session"
-                ? (data.session.get(route.data.sessionID)?.location ?? location.ref)
-                : undefined,
+            location: route.data.type === "session" ? data.session.get(route.data.sessionID)?.location : undefined,
          })
          dialog.clear()
        },
@@ -105,7 +105,7 @@ export const settings: Setting[] = [
    title: "Scope",
    category: "Tabs",
    path: ["tabs", "scope"],
-    default: "global",
+    default: "cwd",
    values: ["cwd", "global"],
    labels: ["current directory", "global"],
  },
@@ -2,8 +2,8 @@ import { useTerminalDimensions } from "@opentui/solid"
 import { TextAttributes } from "@opentui/core"
 import { createMemo, createResource, createSignal, onMount, Show } from "solid-js"
 import path from "path"
-import { DialogSelect, dialogSelectContentWidth, type DialogSelectOption } from "../ui/dialog-select"
-import { dialogWidth, useDialog } from "../ui/dialog"
+import { DialogSelect, type DialogSelectOption } from "../ui/dialog-select"
+import { useDialog } from "../ui/dialog"
 import { useClient } from "../context/client"
 import { Keymap } from "../context/keymap"
 import { useTheme } from "../context/theme"
@@ -159,10 +159,7 @@ export function DialogMoveSession(props: DialogMoveSessionProps) {
      if (b.location === b.root.directory) return 1
      return a.location.localeCompare(b.location)
    })
-    const titleWidth = Math.max(
-      1,
-      dialogSelectContentWidth(Math.min(dialogWidth("xlarge"), dimensions().width - 2)),
-    )
+    const titleWidth = Math.max(1, Math.min(116, dimensions().width - 2) - 12)

    return list.map((item) => {
      const title = abbreviateHome(item.location, paths.home)
@@ -2,8 +2,8 @@ import path from "path"
 import { createMemo, createResource, createSignal, onMount } from "solid-js"
 import type { SessionInfo } from "@opencode-ai/client"
 import { useTerminalDimensions } from "@opentui/solid"
-import { dialogWidth, useDialog } from "../ui/dialog"
-import { DialogSelect, dialogSelectContentWidth } from "../ui/dialog-select"
+import { useDialog } from "../ui/dialog"
+import { DialogSelect } from "../ui/dialog-select"
 import { useRoute } from "../context/route"
 import { useData } from "../context/data"
 import { useClient } from "../context/client"
@@ -16,7 +16,7 @@ import { abbreviateHome } from "../runtime"
 import { useTuiPaths } from "../context/runtime"
 import { truncateFilePath } from "../ui/file-path"
 import { stringWidth } from "../util/string-width"
-import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"
+import { sessionTitle } from "../util/session"
 import { Spinner } from "./spinner"

 const RECENT_LIMIT = 8
@@ -80,11 +80,10 @@ export function DialogOpen() {
      const name = project?.canonical === "/" ? undefined : project?.name || path.basename(project?.canonical ?? "")
      const running = data.session.family(session.id).some((id) => data.session.status(id) === "running")
      return {
-        title: withTimestampedFallback(session),
+        title: sessionTitle(session),
        value: { type: "session", sessionID: session.id } as OpenTarget,
        category: "Sessions",
        footer: `${name ? `${Locale.truncate(name, 20)} · ` : ""}${timeAgo(session.time.updated)}`,
-        onSelect: () => location.set(session.location),
        gutter: running
          ? () => <Spinner />
          : tabs.has(session.id)
@@ -105,8 +104,8 @@ export function DialogOpen() {
      .map((project) => {
        const title = project.name ?? path.basename(project.canonical)
        const footer = abbreviateHome(project.canonical, paths.home)
-        const width =
-          dialogSelectContentWidth(Math.min(dialogWidth("large"), dimensions().width - 2)) - stringWidth(title)
+        // Dialog padding, the gutter column, title padding, and the separating space use nine columns.
+        const width = Math.min(60, dimensions().width - 2) - 9 - stringWidth(title)
        return {
          title,
          footer: truncateFilePath(footer, width),
@@ -18,8 +18,7 @@ import { Spinner } from "./spinner"
 import { errorMessage } from "../util/error"
 import { useSessionTabs } from "../context/session-tabs"
 import { useStorage } from "../context/storage"
-import { useConfig } from "../config"
-import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"
+import { sessionTitle } from "../util/session"

 export function DialogSessionList() {
  const dialog = useDialog()
@@ -31,15 +30,12 @@ export function DialogSessionList() {
  const client = useClient()
  const local = useLocal()
  const sessionTabs = useSessionTabs()
-  const config = useConfig().data
  const toast = useToast()
  const [filter, setFilter] = createSignal("")
  const shortcuts = Keymap.useShortcuts()
  const [search, setSearch] = createDebouncedSignal("", 150)
  const [toDelete, setToDelete] = createSignal<string>()
-  const [prefs, updatePrefs] = useStorage().store("session-list", {
-    initial: { allProjects: config.tabs?.scope !== "cwd" },
-  })
+  const [prefs, updatePrefs] = useStorage().store("session-list", { initial: { allProjects: false } })
  const allProjects = () => prefs.allProjects

  const [searchResults, { mutate: setSearchResults }] = createResource(
@@ -82,9 +78,7 @@ export function DialogSessionList() {
          (session.projectID === current?.project.id && session.location.directory === current.directory),
      )
    if (!query) return sessions
-    return sessions.filter(
-      (session) => !session.parentID && withTimestampedFallback(session).toLowerCase().includes(query),
-    )
+    return sessions.filter((session) => !session.parentID && sessionTitle(session).toLowerCase().includes(query))
  })
  const sessions = createMemo(() => {
    const query = filter().trim()
@@ -146,9 +140,7 @@ export function DialogSessionList() {
      const slot = sessionTabs.enabled() ? undefined : slotByID.get(session.id)
      const deleting = toDelete() === session.id
      return {
-        title: deleting
-          ? `Press ${shortcuts.get("session.delete")} again to confirm`
-          : withTimestampedFallback(session),
+        title: deleting ? `Press ${shortcuts.get("session.delete")} again to confirm` : sessionTitle(session),
        value: session.id,
        category,
        footer,
@@ -244,9 +236,7 @@ export function DialogSessionList() {
              .remove({ sessionID: option.value })
              .then(() => {
                setSearchResults((result) =>
-                  result
-                    ? { ...result, sessions: result.sessions.filter((session) => session.id !== option.value) }
-                    : result,
+                  result ? { ...result, sessions: result.sessions.filter((session) => session.id !== option.value) } : result,
                )
              })
              .catch((error) => {
@@ -45,7 +45,6 @@ const messageIDFromEvent = (eventID: string) => eventID.replace(/^evt_/, "msg_")
 // server cannot recover their Location when settling them. Preserve the event Location
 // until MCP elicitations carry session ownership.
 export type FormWithLocation = FormInfo & { readonly location?: LocationRef }
-type ShellWithLocation = ShellInfo & { readonly location: LocationRef }

 type LocationData = {
  info?: LocationGetOutput
@@ -62,7 +61,7 @@ type LocationData = {
  websearch?: WebSearchProvider[]
  // Currently running shell commands for this location, keyed by shell id. Entries are removed
  // once the command exits or is deleted, so this only ever holds in-flight shells.
-  shell?: Record<string, ShellWithLocation>
+  shell?: Record<string, ShellInfo>
  skill?: SkillInfo[]
 }

@@ -375,11 +374,8 @@ export const { use: useData, provider: DataProvider } = createSimpleContext({
            .catch((error) => console.error("Failed to load projected model switch message", error))
          break
        case "session.renamed":
-          // Preserve the live title when it races the session's initial read.
-          void result.session.sync(event.data.sessionID).then(() => {
-            if (store.session.info[event.data.sessionID])
-              setStore("session", "info", event.data.sessionID, "title", event.data.title)
-          })
+          if (store.session.info[event.data.sessionID])
+            setStore("session", "info", event.data.sessionID, "title", event.data.title)
          break
        case "session.moved":
          if (store.session.info[event.data.sessionID]) {
@@ -855,10 +851,7 @@ export const { use: useData, provider: DataProvider } = createSimpleContext({
        case "shell.created":
          setStore("location", locationKey(event.location ?? defaultLocation()), (data) => ({
            ...data,
-            shell: {
-              ...data?.shell,
-              [event.data.info.id]: { ...event.data.info, location: event.location ?? defaultLocation() },
-            },
+            shell: { ...data?.shell, [event.data.info.id]: event.data.info },
          }))
          break
        case "shell.exited":
@@ -1113,18 +1106,7 @@ export const { use: useData, provider: DataProvider } = createSimpleContext({
            const key = locationKey(response.location)
            setStore("location", key, {
              ...store.location[key],
-              shell: Object.fromEntries(
-                response.data.map((info) => [
-                  info.id,
-                  {
-                    ...info,
-                    location: {
-                      directory: response.location.directory,
-                      workspaceID: response.location.workspaceID,
-                    },
-                  },
-                ]),
-              ),
+              shell: Object.fromEntries(response.data.map((info) => [info.id, info])),
            })
          })
        },
@@ -3,7 +3,7 @@ import { isDeepEqual } from "remeda"
 import { createSimpleContext } from "./helper"
 import { useClient } from "./client"
 import { useData } from "./data"
-import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"
+import { sessionTitle } from "../util/session"
 import { useEvent } from "./event"
 import { useRoute } from "./route"
 import { useConfig } from "../config"
@@ -66,33 +66,18 @@ export const { use: useSessionTabs, provider: SessionTabsProvider } = createSimp
    let closedTabs: ClosedSessionTab[] = []

    function state() {
-      if (config.tabs?.scope === "cwd") return store.cwd[paths.cwd] ?? fallback
-      return store.global
+      if (config.tabs?.scope === "global") return store.global
+      return store.cwd[paths.cwd] ?? fallback
    }

    function update(mutation: (draft: TabsState) => void) {
-      const scope = config.tabs?.scope ?? "global"
+      const scope = config.tabs?.scope ?? "cwd"
      void updateStore((draft) => mutation(scope === "cwd" ? (draft.cwd[paths.cwd] ??= empty()) : draft.global)).catch(
        () => {},
      )
    }

    const root = (sessionID: string) => data.session.root(sessionID)
-    const title = (sessionID: string, persisted?: string, fallback?: string) => {
-      const session = data.session.get(sessionID)
-      return session?.title ?? persisted ?? fallback ?? (session ? withTimestampedFallback(session) : undefined)
-    }
-    const normalize = (value: TabsState) => ({
-      tabs: value.tabs.reduce<SessionTab[]>((tabs, tab) => {
-        const sessionID = root(tab.sessionID)
-        return openSessionTab(tabs, { sessionID, title: title(sessionID, tab.title) })
-      }, []),
-      unread: Object.entries(value.unread).reduce<Record<string, SessionTabUnread>>((result, entry) => {
-        const sessionID = root(entry[0])
-        result[sessionID] = result[sessionID] === "error" ? "error" : entry[1]
-        return result
-      }, {}),
-    })
    const current = () => (route.data.type === "session" ? root(route.data.sessionID) : undefined)
    const newTab = createMemo((open = false) => {
      if (route.data.type === "home") return true
@@ -130,29 +115,32 @@ export const { use: useSessionTabs, provider: SessionTabsProvider } = createSimp
      if (route.data.type !== "session" || route.data.sessionID === "dummy") return
      const sessionID = root(route.data.sessionID)
      history = recordSessionTabHistory(history, sessionID)
-      const fallback = newTab() ? NEW_SESSION_TAB_TITLE : undefined
-      const tabs = openSessionTab(state().tabs, {
-        sessionID,
-        title: title(sessionID, state().tabs.find((tab) => tab.sessionID === sessionID)?.title, fallback),
-      })
+      const session = data.session.get(sessionID)
+      const title = session?.title ?? (newTab() ? NEW_SESSION_TAB_TITLE : session ? sessionTitle(session) : undefined)
+      const tabs = openSessionTab(state().tabs, { sessionID, title })
      if (tabs === state().tabs && !state().unread[sessionID]) return
      update((draft) => {
-        draft.tabs = openSessionTab(draft.tabs, {
-          sessionID,
-          title: title(sessionID, draft.tabs.find((tab) => tab.sessionID === sessionID)?.title, fallback),
-        })
+        draft.tabs = openSessionTab(draft.tabs, { sessionID, title })
        delete draft.unread[sessionID]
      })
    })

    createEffect(() => {
      if (!enabled()) return
-      const next = normalize(state())
-      if (isDeepEqual(next, state())) return
+      const next = state().tabs.reduce<SessionTab[]>((tabs, tab) => {
+        const sessionID = root(tab.sessionID)
+        const session = data.session.get(sessionID)
+        return openSessionTab(tabs, { sessionID, title: session ? sessionTitle(session) : tab.title })
+      }, [])
+      const unread = Object.entries(state().unread).reduce<Record<string, SessionTabUnread>>((result, entry) => {
+        const sessionID = root(entry[0])
+        result[sessionID] = result[sessionID] === "error" ? "error" : entry[1]
+        return result
+      }, {})
+      if (isDeepEqual(next, state().tabs) && isDeepEqual(unread, state().unread)) return
      update((draft) => {
-        const next = normalize(draft)
-        draft.tabs = next.tabs
-        draft.unread = next.unread
+        draft.tabs = next
+        draft.unread = unread
      })
    })

@@ -1,5 +1,5 @@
 import { batch, createContext, onCleanup, useContext, type ParentProps } from "solid-js"
-import { createStore, produce, reconcile, type Store } from "solid-js/store"
+import { createStore, reconcile, type Store } from "solid-js/store"
 import path from "path"
 import { mkdirSync, readFileSync, watch } from "fs"
 import { Flock } from "@opencode-ai/util/flock"
@@ -13,20 +13,12 @@ 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) {
@@ -45,7 +37,6 @@ 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 })
@@ -82,14 +73,6 @@ 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()))
@@ -10,7 +10,7 @@
 // back to the usual two-press exit sequence through RunFooter.requestExit().
 import path from "path"
 import { CliRenderEvents, createCliRenderer, type CliRenderer, type ScrollbackWriter } from "@opentui/core"
-import { isFallbackTitle } from "@opencode-ai/util/session-title-fallback"
+import { isDefaultTitle } from "../util/session"
 import { monoSnapshot } from "./mono"
 import { entrySplash, exitSplash, splashMeta } from "./splash"
 import { resolveRunTheme } from "./theme"
@@ -105,7 +105,7 @@ function shutdown(renderer: CliRenderer): void {
 }

 function splashInfo(title: string | undefined, history: RunPrompt[]) {
-  if (title && !isFallbackTitle(title)) {
+  if (title && !isDefaultTitle(title)) {
    return {
      title,
      showSession: true,
@@ -176,7 +176,7 @@ export async function createRuntimeLifecycle(input: LifecycleInput): Promise<Lif
  if (mono) renderer.on(CliRenderEvents.EXTERNAL_OUTPUT, monoSnapshot)
  const setTitle = (title?: string) => {
    if (input.host.platform !== "linux") return
-    if (!title || isFallbackTitle(title)) return renderer.setTerminalTitle("OpenCode")
+    if (!title || isDefaultTitle(title)) return renderer.setTerminalTitle("OpenCode")
    renderer.setTerminalTitle(`OC | ${title.length > 40 ? title.slice(0, 37) + "..." : title}`)
  }
  setTitle(input.sessionTitle)
@@ -240,7 +240,6 @@ export function PluginProvider(props: ParentProps<{ packages: PackageResolver }>
      },
      storage: {
        store: (key, options) => storage.store(`plugin.${item.plugin.id}.${key}`, options),
-        memory: (key, options) => storage.memory(`plugin.${item.plugin.id}.${key}`, options),
      },
      ui: {
        dialog: dialogApi,
@@ -2,6 +2,7 @@ import { createMemo, For, Show, createEffect, onMount, onCleanup } from "solid-j
 import { createStore } from "solid-js/store"
 import { TextAttributes, ScrollBoxRenderable } from "@opentui/core"
 import { useData } from "../../../context/data"
+import { useLocation } from "../../../context/location"
 import { useClient } from "../../../context/client"
 import { useTheme } from "../../../context/theme"
 import { Keymap } from "../../../context/keymap"
@@ -9,14 +10,13 @@ import { useComposerTab } from "./index"

 export function ShellTab(props: { sessionID: string }) {
  const data = useData()
+  const location = useLocation()
  const client = useClient()
  const theme = useTheme()
  const composer = useComposerTab()
  const shortcuts = Keymap.useShortcuts()

-  const entries = createMemo(() =>
-    data.shell.listBySession(props.sessionID).filter((shell) => shell.status === "running"),
-  )
+  const entries = createMemo(() => data.shell.listBySession(props.sessionID).filter((shell) => shell.status === "running"))

  const [store, setStore] = createStore({ selected: 0 })
  let scroll: ScrollBoxRenderable | undefined
@@ -83,9 +83,10 @@ export function ShellTab(props: { sessionID: string }) {
        run() {
          const entry = selectedEntry()
          if (!entry) return
+          const ref = location.current
          void client.api.shell.remove({
            id: entry.id,
-            location: { directory: entry.location.directory, workspace: entry.location.workspaceID },
+            location: ref ? { directory: ref.directory, workspace: ref.workspaceID } : undefined,
          })
        },
      },
@@ -8,7 +8,7 @@ import { useTheme } from "../../../context/theme"
 import { Locale } from "../../../util/locale"
 import { Keymap } from "../../../context/keymap"
 import { useComposerTab } from "./index"
-import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"
+import { sessionTitle } from "../../../util/session"

 interface SubagentEntry {
  sessionID: string
@@ -39,7 +39,7 @@ export function SubagentsTab(props: { sessionID: string }) {
    if (current.parentID) {
      const siblings = data.session.list().filter((s) => s.parentID === current.parentID)
      for (const sibling of siblings) {
-        const title = withTimestampedFallback(sibling)
+        const title = sessionTitle(sibling)
        const agentMatch = title.match(/@(\w+) subagent/)
        const agent = sibling.agent
          ? Locale.titlecase(sibling.agent)
@@ -58,7 +58,7 @@ export function SubagentsTab(props: { sessionID: string }) {
    } else {
      const children = data.session.list().filter((s) => s.parentID === props.sessionID)
      for (const child of children) {
-        const title = withTimestampedFallback(child)
+        const title = sessionTitle(child)
        const agentMatch = title.match(/@(\w+) subagent/)
        const agent = child.agent
          ? Locale.titlecase(child.agent)
@@ -51,6 +51,7 @@ import { useClient } from "../../context/client"
 import { useEditorContext } from "../../context/editor"
 import { openEditor } from "../../editor"
 import { useDialog } from "../../ui/dialog"
+import { DialogConfirm } from "../../ui/dialog-confirm"
 import { DialogSessionRename } from "../../component/dialog-session-rename"
 import { DialogMessage } from "./dialog-message"
 import { DialogFork } from "./dialog-fork"
@@ -92,7 +93,7 @@ import { switchLabel } from "../../util/model"
 import { findMessageBoundary, messageNavigationSlack } from "./message-navigation"
 import { stringWidth } from "../../util/string-width"
 import { useArgs } from "../../context/args"
-import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"
+import { sessionTitle } from "../../util/session"

 addDefaultParsers(parsers.parsers)

@@ -143,8 +144,8 @@ export function Session() {
  const promptRef = usePromptRef()
  const session = createMemo(() => data.session.get(route.sessionID))
  const messages = () => data.session.message.list(route.sessionID)
+  const location = createMemo(() => session()?.location)
  const currentLocation = useLocation()
-  const location = createMemo(() => session()?.location ?? currentLocation.ref)

  createEffect(() => currentLocation.set(location()))

@@ -522,6 +523,32 @@ export function Session() {
      slash: { name: "rename" },
      run: () => DialogSessionRename.show(dialog, route.sessionID, session()?.title),
    },
+    {
+      title: "Delete session",
+      id: "session.delete",
+      group: "Session",
+      slash: { name: "delete" },
+      run: async () => {
+        const current = session()
+        if (!current) return
+        const confirmed = await DialogConfirm.show(
+          dialog,
+          "Delete Session",
+          `Delete "${current.title}"? This action cannot be undone.`,
+        )
+        if (confirmed !== true) return
+        const error = await client.api.session.remove({ sessionID: route.sessionID }).then(
+          () => undefined,
+          (error) => error,
+        )
+        if (!error) return
+        toast.show({
+          message: `Failed to delete session: ${errorMessage(error)}`,
+          variant: "error",
+          duration: 5000,
+        })
+      },
+    },
    {
      title: "Jump to message",
      id: "session.timeline",
@@ -3308,7 +3335,7 @@ function formatSessionTranscript(session: SessionInfo, messages: SessionMessageI
    })
    return [`## Assistant\n\n${content.join("\n\n")}`]
  })
-  return `# ${withTimestampedFallback(session)}\n\n**Session ID:** ${session.id}\n**Created:** ${new Date(session.time.created).toLocaleString()}\n**Updated:** ${new Date(session.time.updated).toLocaleString()}\n\n---\n\n${body.join("\n\n---\n\n")}\n`
+  return `# ${sessionTitle(session)}\n\n**Session ID:** ${session.id}\n**Created:** ${new Date(session.time.created).toLocaleString()}\n**Updated:** ${new Date(session.time.updated).toLocaleString()}\n\n---\n\n${body.join("\n\n---\n\n")}\n`
 }

 export function parseApplyPatchFiles(value: unknown) {
@@ -3,7 +3,7 @@ import { createMemo, Show } from "solid-js"
 import { useTheme } from "../../context/theme"
 import { useConfig } from "../../config"
 import { PluginSlot } from "../../plugin/context"
-import { withTimestampedFallback } from "@opencode-ai/util/session-title-fallback"
+import { sessionTitle } from "../../util/session"

 import { getScrollAcceleration } from "../../util/scroll"

@@ -39,7 +39,7 @@ export function Sidebar(props: { sessionID: string; overlay?: boolean }) {
          <box flexShrink={0} gap={1} paddingRight={1}>
            <box paddingRight={1}>
              <text fg={theme.text.default}>
-                <b>{withTimestampedFallback(session()!)}</b>
+                <b>{sessionTitle(session()!)}</b>
              </text>
              <Show when={session()!.location.workspaceID}>
                <text fg={theme.text.subdued}>{session()!.location.workspaceID}</text>
@@ -83,11 +83,6 @@ export interface DialogSelectOption<T = any> {
  onSelect?: (ctx: DialogContext) => void
 }

-export function dialogSelectContentWidth(dialogWidth: number) {
-  // Scroll padding, row padding, the gutter, title padding, and the separating gap.
-  return dialogWidth - 12
-}
-
 export type DialogSelectRef<T> = {
  filter: string
  filtered: DialogSelectOption<T>[]
@@ -8,17 +8,9 @@ import { useToast } from "./toast"
 import { useClipboard } from "../context/clipboard"
 import { useConfig } from "../config"

-export type DialogSize = "medium" | "large" | "xlarge"
-
-export function dialogWidth(size: DialogSize) {
-  if (size === "xlarge") return 116
-  if (size === "large") return 88
-  return 60
-}
-
 export function Dialog(
  props: ParentProps<{
-    size?: DialogSize
+    size?: "medium" | "large" | "xlarge"
    centered?: boolean
    onClose: () => void
  }>,
@@ -28,6 +20,12 @@ export function Dialog(
  const renderer = useRenderer()

  let dismiss = false
+  const width = () => {
+    if (props.size === "xlarge") return 116
+    if (props.size === "large") return 88
+    return 60
+  }
+
  return (
    <box
      onMouseDown={() => {
@@ -59,7 +57,7 @@ export function Dialog(
          dismiss = false
          e.stopPropagation()
        }}
-        width={dialogWidth(props.size ?? "medium")}
+        width={width()}
        maxWidth={dimensions().width - 2}
        backgroundColor={theme.background.default}
        paddingTop={1}
@@ -76,7 +74,7 @@ function init() {
      element: JSX.Element
      onClose?: () => void
    }[],
-    size: "medium" as DialogSize,
+    size: "medium" as "medium" | "large" | "xlarge",
    centered: false,
  })

@@ -1,6 +1,18 @@
-import type { ModelInfo, SessionMessageAssistant, SessionMessageInfo } from "@opencode-ai/client"
+import type { ModelInfo, SessionInfo, SessionMessageAssistant, SessionMessageInfo } from "@opencode-ai/client"
 import { Locale } from "./locale"

+export function isDefaultTitle(title?: string) {
+  return (
+    title === undefined || /^(New session - |Child session - )\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z$/.test(title)
+  )
+}
+
+export function sessionTitle(session: Pick<SessionInfo, "parentID" | "time" | "title">) {
+  return (
+    session.title ?? `${session.parentID ? "Child" : "New"} session - ${new Date(session.time.created).toISOString()}`
+  )
+}
+
 export function lastAssistantWithUsage(messages: ReadonlyArray<SessionMessageInfo>, boundary?: string) {
  const boundaryIndex = boundary ? messages.findIndex((message) => message.id === boundary) : -1
  if (boundary && boundaryIndex === -1) return undefined
@@ -138,94 +138,6 @@ test("session lifecycle updates the terminal title and prints the epilogue after
  }
 })

-test("session title generated while an untitled session is loading remains visible", async () => {
-  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 titles: string[] = []
-  const setTitle = setup.renderer.setTerminalTitle.bind(setup.renderer)
-  const generatedTitle = Promise.withResolvers<void>()
-  setup.renderer.setTerminalTitle = (title) => {
-    titles.push(title)
-    if (title === "OC | Generated title") generatedTitle.resolve()
-    setTitle(title)
-  }
-  const sessionRequested = Promise.withResolvers<void>()
-  const renameSyncRequested = Promise.withResolvers<void>()
-  const releaseSession = Promise.withResolvers<void>()
-  let sessionRequests = 0
-  const session = {
-    id: "dummy",
-    projectID: "project",
-    location: { directory },
-    cost: 0,
-    tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
-    time: { created: 0, updated: 0 },
-  }
-  const events = createEventStream()
-  const calls = createFetch(async (url) => {
-    if (url.pathname === "/api/session") return json({ data: [], cursor: {} })
-    if (url.pathname === "/api/session/dummy") {
-      sessionRequests++
-      sessionRequested.resolve()
-      if (sessionRequests === 2) renameSyncRequested.resolve()
-      await releaseSession.promise
-      return json({ data: session })
-    }
-    if (url.pathname === "/api/session/dummy/message") return json({ data: [], cursor: {} })
-    if (url.pathname === "/api/session/dummy/pending") return json({ data: [] })
-    if (url.pathname === "/api/session/dummy/permission") return json({ data: [] })
-  }, events)
-  const server = Bun.serve({ port: 0, fetch: (request) => calls.fetch(request) })
-
-  try {
-    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: { sessionID: "dummy" },
-        log: () => {},
-      }).pipe(Effect.provide(AppNodeBuilder.build(Global.node)), Effect.provide(FileSystem.layerNoop({}))),
-    )
-
-    await sessionRequested.promise
-    events.emit({
-      id: "evt_renamed",
-      created: 1,
-      type: "session.renamed",
-      durable: { aggregateID: "dummy", seq: 1, version: 1 },
-      data: { sessionID: "dummy", title: "Generated title" },
-    })
-    await Promise.race([
-      renameSyncRequested.promise,
-      Bun.sleep(2_000).then(() => {
-        throw new Error("rename sync did not start")
-      }),
-    ])
-    releaseSession.resolve()
-    await Promise.race([
-      generatedTitle.promise,
-      Bun.sleep(2_000).then(() => {
-        throw new Error("generated title was not shown")
-      }),
-    ])
-    await Bun.sleep(20)
-
-    const generated = titles.lastIndexOf("OC | Generated title")
-    expect(generated).toBeGreaterThan(-1)
-    expect(titles.slice(generated + 1)).not.toContain("OpenCode")
-    setup.renderer.destroy()
-    await task
-  } finally {
-    if (!setup.renderer.isDestroyed) setup.renderer.destroy()
-    await server.stop()
-    mock.restore()
-  }
-})
-
 test("session startup prompt is submitted exactly once", async () => {
  const setup = await createTestRenderer({ width: 80, height: 24, useThread: false })
  const core = await import("@opentui/core")
@@ -9,11 +9,7 @@ import { createEffect, onMount, type ParentProps } from "solid-js"
 import { ConfigProvider } from "../../../src/config"
 import { ClientProvider, useClient } from "../../../src/context/client"
 import { DataProvider as DataProviderBase, useData } from "../../../src/context/data"
-import { Keymap } from "../../../src/context/keymap"
 import { LocationProvider, useLocation } from "../../../src/context/location"
-import { RouteProvider } from "../../../src/context/route"
-import { ThemeProvider } from "../../../src/context/theme"
-import { Composer } from "../../../src/routes/session/composer"
 import { createSessionRows, type SessionRow } from "../../../src/routes/session/rows"
 import { createApi, createEventStream, createFetch, directory, json, worktree } from "../../fixture/tui-client"
 import { TestTuiContexts } from "../../fixture/tui-environment"
@@ -1786,19 +1782,12 @@ test("refreshes references after updates", async () => {
 test("keeps shell state scoped to location", async () => {
  const events = createEventStream()
  const other = "/tmp/opencode/other"
-  const workspace = "ws_other"
-  let removed: URL | undefined
-  const calls = createFetch((url, request) => {
-    if (url.pathname === "/api/shell/sh_other" && request.method === "DELETE") {
-      removed = url
-      return new Response(null, { status: 204 })
-    }
+  const calls = createFetch((url) => {
    if (url.pathname !== "/api/shell") return
    const requestDirectory = url.searchParams.get("location[directory]")
    return json({
      location: {
        directory: requestDirectory ?? directory,
-        workspaceID: url.searchParams.get("location[workspace]") ?? undefined,
        project: { id: "proj_test", directory: requestDirectory ?? directory },
      },
      data: [
@@ -1809,7 +1798,7 @@ test("keeps shell state scoped to location", async () => {
          cwd: requestDirectory ?? directory,
          shell: "/bin/sh",
          file: "/tmp/opencode-shell",
-          metadata: { sessionID: "ses_shared" },
+          metadata: { sessionID: requestDirectory === other ? "ses_other" : "ses_default" },
          time: { started: 1 },
        },
      ],
@@ -1819,15 +1808,7 @@ test("keeps shell state scoped to location", async () => {

  function Probe() {
    data = useData()
-    return (
-      <RouteProvider initialRoute={{ type: "session", sessionID: "ses_shared" }}>
-        <Keymap.Provider>
-          <ThemeProvider mode="dark" source={{ discover: () => Promise.resolve({}) }}>
-            <Composer sessionID="ses_shared" open={true} defaultTab="shell" />
-          </ThemeProvider>
-        </Keymap.Provider>
-      </RouteProvider>
-    )
+    return <box />
  }

  const app = await testRender(() => (
@@ -1841,31 +1822,19 @@ test("keeps shell state scoped to location", async () => {
      </ClientProvider>
    </TestTuiContexts>
  ))
-  app.renderer.start()

  try {
    await wait(() => data.shell.list().some((shell) => shell.id === "sh_default"))
-    await data.shell.sync({ directory: other, workspaceID: workspace })
+    await data.shell.sync({ directory: other })

    expect(data.shell.list().map((shell) => shell.id)).toEqual(["sh_default"])
-    expect(data.shell.list({ directory: other, workspaceID: workspace }).map((shell) => shell.id)).toEqual(["sh_other"])
-    expect(data.shell.listBySession("ses_shared").map((shell) => [shell.id, shell.location.directory])).toEqual([
-      ["sh_default", directory],
-      ["sh_other", other],
-    ])
-
-    await app.waitForFrame((frame) => frame.includes("pnpm dev"))
-    app.mockInput.pressArrow("down")
-    app.mockInput.pressKey("d", { ctrl: true })
-    await wait(() => removed !== undefined)
-    expect(removed?.searchParams.get("location[directory]")).toBe(other)
-    expect(removed?.searchParams.get("location[workspace]")).toBe(workspace)
+    expect(data.shell.list({ directory: other }).map((shell) => shell.id)).toEqual(["sh_other"])

    events.emit({
      id: "evt_shell_created",
      created: 0,
      type: "shell.created",
-      location: { directory: other, workspaceID: workspace },
+      location: { directory: other },
      data: {
        info: {
          id: "sh_live_other",
@@ -1874,18 +1843,13 @@ test("keeps shell state scoped to location", async () => {
          cwd: other,
          shell: "/bin/sh",
          file: "/tmp/opencode-shell-live",
-          metadata: { sessionID: "ses_shared" },
+          metadata: { sessionID: "ses_other" },
          time: { started: 2 },
        },
      },
    })
-    await wait(() =>
-      data.shell.list({ directory: other, workspaceID: workspace }).some((shell) => shell.id === "sh_live_other"),
-    )
+    await wait(() => data.shell.list({ directory: other }).some((shell) => shell.id === "sh_live_other"))
    expect(data.shell.list().map((shell) => shell.id)).toEqual(["sh_default"])
-    expect(data.shell.listBySession("ses_shared").find((shell) => shell.id === "sh_live_other")?.location.directory).toBe(
-      other,
-    )
  } finally {
    app.renderer.destroy()
  }
@@ -1,106 +0,0 @@
-/** @jsxImportSource @opentui/solid */
-import { expect, test } from "bun:test"
-import { testRender } from "@opentui/solid"
-import { mkdtempSync, rmSync } from "fs"
-import { tmpdir } from "os"
-import path from "path"
-import { onMount } from "solid-js"
-import { DialogOpen } from "../../../src/component/dialog-open"
-import { ConfigProvider } from "../../../src/config"
-import { ClientProvider } from "../../../src/context/client"
-import { DataProvider, useData } from "../../../src/context/data"
-import { Keymap } from "../../../src/context/keymap"
-import { LocationProvider, useLocation } from "../../../src/context/location"
-import { RouteProvider, useRoute } from "../../../src/context/route"
-import { TuiAppProvider } from "../../../src/context/runtime"
-import { SessionTabsProvider } from "../../../src/context/session-tabs"
-import { StorageProvider } from "../../../src/context/storage"
-import { ThemeProvider } from "../../../src/context/theme"
-import { DialogProvider, useDialog } from "../../../src/ui/dialog"
-import { ToastProvider } from "../../../src/ui/toast"
-import { createApi, createEventStream, createFetch, json } from "../../fixture/tui-client"
-import { TestTuiContexts } from "../../fixture/tui-environment"
-import { createTuiResolvedConfig } from "../../fixture/tui-runtime"
-
-test("selecting an unhydrated session preserves its location", async () => {
-  const state = mkdtempSync(path.join(tmpdir(), "opencode-dialog-open-"))
-  const events = createEventStream()
-  const remote = { directory: "/tmp/opencode/remote", workspaceID: "ws_remote" }
-  const calls = createFetch((url) => {
-    if (url.pathname !== "/api/session") return
-    return json({
-      data: [
-        {
-          id: "ses_remote",
-          projectID: "proj_remote",
-          cost: 0,
-          tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
-          time: { created: 1, updated: 2 },
-          title: "Remote session",
-          location: remote,
-        },
-      ],
-      cursor: {},
-    })
-  }, events)
-  let route!: ReturnType<typeof useRoute>
-  let location!: ReturnType<typeof useLocation>
-  let data!: ReturnType<typeof useData>
-
-  function Probe() {
-    const dialog = useDialog()
-    route = useRoute()
-    location = useLocation()
-    data = useData()
-    onMount(() => dialog.replace(() => <DialogOpen />))
-    return null
-  }
-
-  const app = await testRender(
-    () => (
-      <TestTuiContexts paths={{ state }}>
-        <TuiAppProvider value={{ name: "test", version: "test", channel: "test" }}>
-          <StorageProvider>
-            <ConfigProvider config={createTuiResolvedConfig()}>
-              <Keymap.Provider>
-                <ToastProvider>
-                  <RouteProvider>
-                    <ClientProvider api={createApi(calls.fetch)}>
-                      <DataProvider>
-                        <LocationProvider>
-                          <SessionTabsProvider>
-                            <ThemeProvider mode="dark" source={{ discover: () => Promise.resolve({}) }}>
-                              <DialogProvider>
-                                <Probe />
-                              </DialogProvider>
-                            </ThemeProvider>
-                          </SessionTabsProvider>
-                        </LocationProvider>
-                      </DataProvider>
-                    </ClientProvider>
-                  </RouteProvider>
-                </ToastProvider>
-              </Keymap.Provider>
-            </ConfigProvider>
-          </StorageProvider>
-        </TuiAppProvider>
-      </TestTuiContexts>
-    ),
-    { width: 100, height: 30, kittyKeyboard: true },
-  )
-  app.renderer.start()
-
-  try {
-    await app.waitForFrame((frame) => frame.includes("Remote session"))
-    expect(data.session.get("ses_remote")).toBeUndefined()
-
-    app.mockInput.pressEnter()
-    await app.waitFor(() => route.data.type === "session")
-
-    expect(route.data).toEqual({ type: "session", sessionID: "ses_remote" })
-    expect(location.ref).toEqual(remote)
-  } finally {
-    app.renderer.destroy()
-    rmSync(state, { recursive: true, force: true })
-  }
-})
@@ -5,10 +5,7 @@ import { expect, test } from "bun:test"
 import { mkdir } from "node:fs/promises"
 import path from "node:path"
 import { createSignal, onCleanup, onMount } from "solid-js"
-import { dialogWidth } from "../../../src/ui/dialog"
-import { dialogSelectContentWidth, type DialogSelectOption } from "../../../src/ui/dialog-select"
-import { truncateFilePath } from "../../../src/ui/file-path"
-import { stringWidth } from "../../../src/util/string-width"
+import type { DialogSelectOption } from "../../../src/ui/dialog-select"
 import { tmpdir } from "../../fixture/fixture"
 import { TestTuiContexts } from "../../fixture/tui-environment"
 import { createTuiResolvedConfig } from "../../fixture/tui-runtime"
@@ -150,28 +147,6 @@ async function mountSelect(root: string, initial: DialogSelectOption<string>[],
  return { app, moved, replaceOptions, selected }
 }

-test("budgets option content for constrained and full-width large dialogs", () => {
-  expect(dialogSelectContentWidth(Math.min(dialogWidth("large"), 62 - 2)) - 7).toBe(41)
-  expect(dialogSelectContentWidth(Math.min(dialogWidth("large"), 100 - 2)) - 7).toBe(69)
-})
-
-test("renders the complete truncated footer within the option row", async () => {
-  await using tmp = await tmpdir()
-  const title = "Project"
-  const footer = truncateFilePath(
-    "/tmp/opencode/projects/a-very-long-project-directory/distinctive-tail.tsx",
-    dialogSelectContentWidth(dialogWidth("medium")) - stringWidth(title),
-  )
-  const select = await mountSelect(tmp.path, [{ title, footer, value: "project" }])
-
-  try {
-    await select.app.waitForFrame((frame) => frame.includes(footer))
-    expect(select.app.captureCharFrame()).toContain(footer)
-  } finally {
-    select.app.renderer.destroy()
-  }
-})
-
 test("renders actions with a current selection", async () => {
  await using tmp = await tmpdir()
  const app = await renderSelect(
@@ -2,56 +2,41 @@
 import { expect, test } from "bun:test"
 import type { OpenCodeEvent } from "@opencode-ai/client"
 import { testRender } from "@opentui/solid"
-import { mkdtempSync, rmSync, watch } from "fs"
+import { mkdtempSync, rmSync } from "fs"
 import { tmpdir } from "os"
 import path from "path"
 import { ConfigProvider } from "../../src/config"
 import { ClientProvider, useClient } from "../../src/context/client"
-import { DataProvider, useData } from "../../src/context/data"
+import { DataProvider } from "../../src/context/data"
 import { RouteProvider, useRoute } from "../../src/context/route"
 import { TuiAppProvider } from "../../src/context/runtime"
 import { SessionTabsProvider, useSessionTabs } from "../../src/context/session-tabs"
 import { NEW_SESSION_TAB_TITLE } from "../../src/context/session-tabs-model"
 import { StorageProvider } from "../../src/context/storage"
-import { createApi, createEventStream, createFetch, directory, json } from "../fixture/tui-client"
+import { createApi, createEventStream, createFetch, directory } from "../fixture/tui-client"
 import { TestTuiContexts } from "../fixture/tui-environment"
 import { createTuiResolvedConfig } from "../fixture/tui-runtime"

-async function wait(fn: () => boolean | Promise<boolean>, timeout = 2_000) {
+async function wait(fn: () => boolean, timeout = 2_000) {
  const start = Date.now()
-  while (!(await fn())) {
+  while (!fn()) {
    if (Date.now() - start > timeout) throw new Error("timed out waiting for condition")
    await Bun.sleep(10)
  }
 }

-async function renderSessionTabs(initialSessionID: string, options?: { state?: string; title?: string }) {
-  const state = options?.state ?? mkdtempSync(path.join(tmpdir(), "opencode-session-tabs-"))
+async function renderSessionTabs(initialSessionID: string) {
+  const state = mkdtempSync(path.join(tmpdir(), "opencode-session-tabs-"))
  const events = createEventStream()
-  const calls = createFetch((url) => {
-    if (url.pathname !== `/api/session/${initialSessionID}`) return
-    return json({
-      data: {
-        id: initialSessionID,
-        title: options?.title,
-        projectID: "project",
-        location: { directory },
-        cost: 0,
-        tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
-        time: { created: 0, updated: 0 },
-      },
-    })
-  }, events)
+  const calls = createFetch(undefined, events)
  let tabs!: ReturnType<typeof useSessionTabs>
  let route!: ReturnType<typeof useRoute>
  let client!: ReturnType<typeof useClient>
-  let data!: ReturnType<typeof useData>

  function Probe() {
    tabs = useSessionTabs()
    route = useRoute()
    client = useClient()
-    data = useData()
    return <box />
  }

@@ -79,75 +64,14 @@ async function renderSessionTabs(initialSessionID: string, options?: { state?: s
  return {
    tabs,
    route,
-    data,
-    state,
    emit: (event: OpenCodeEvent) => events.emit({ ...event, location: { directory } }),
    destroy() {
      app.renderer.destroy()
-      if (!options?.state) rmSync(state, { recursive: true, force: true })
+      rmSync(state, { recursive: true, force: true })
    },
  }
 }

-test("stores session tabs globally by default", async () => {
-  const setup = await renderSessionTabs("first")
-
-  try {
-    const file = path.join(setup.state, "test", "tui", "tabs.json")
-    await wait(() => Bun.file(file).size > 0)
-    expect(await Bun.file(file).json()).toEqual({
-      global: { tabs: [{ sessionID: "first" }], unread: {} },
-      cwd: {},
-    })
-  } finally {
-    setup.destroy()
-  }
-})
-
-test("concurrent TUIs do not alternate shared tab titles from divergent session caches", async () => {
-  const state = mkdtempSync(path.join(tmpdir(), "opencode-session-tabs-shared-"))
-  let titled: Awaited<ReturnType<typeof renderSessionTabs>> | undefined
-  let untitled: Awaited<ReturnType<typeof renderSessionTabs>> | undefined
-
-  try {
-    titled = await renderSessionTabs("shared", { state, title: "Generated title" })
-    untitled = await renderSessionTabs("shared", { state })
-    const file = path.join(state, "test", "tui", "tabs.json")
-    await titled.data.session.sync("shared")
-    await wait(async () => {
-      if (!(await Bun.file(file).exists())) return false
-      return (await Bun.file(file).json()).global.tabs[0]?.title === "Generated title"
-    })
-    const observed = ["Generated title"]
-    const pending = new Set<Promise<void>>()
-    const watcher = watch(path.dirname(file), (_, name) => {
-      if (name !== path.basename(file)) return
-      const read = Bun.file(file)
-        .json()
-        .then((value) => {
-          const title = value.global.tabs[0]?.title
-          if (title && observed.at(-1) !== title) observed.push(title)
-        })
-        .catch(() => undefined)
-        .finally(() => pending.delete(read))
-      pending.add(read)
-    })
-    try {
-      await untitled.data.session.sync("shared")
-      await Bun.sleep(500)
-    } finally {
-      watcher.close()
-      await Promise.allSettled(pending)
-    }
-
-    expect(observed).toEqual(["Generated title"])
-  } finally {
-    titled?.destroy()
-    untitled?.destroy()
-    rmSync(state, { recursive: true, force: true })
-  }
-})
-
 test("user prompt admissions pulse an already-busy background tab", async () => {
  const setup = await renderSessionTabs("background")
  const admitted = (sessionID: string, inputID: string): OpenCodeEvent => ({
@@ -182,7 +106,9 @@ test("user prompt admissions pulse an already-busy background tab", async () =>
    expect(setup.tabs.status("background").promptPulse).toBe(0)

    setup.emit(admitted("background", "msg_1"))
-    await wait(() => setup.tabs.status("background").promptPulse === 1 && setup.tabs.status("background").busy)
+    await wait(
+      () => setup.tabs.status("background").promptPulse === 1 && setup.tabs.status("background").busy,
+    )

    setup.emit(admitted("background", "msg_2"))
    await wait(() => setup.tabs.status("background").promptPulse === 2)
@@ -218,7 +144,9 @@ test("tracks a temporary new session tab across close and creation", async () =>
    await wait(() => setup.tabs.newTab())
    setup.route.navigate({ type: "session", sessionID: "third" })
    expect(setup.tabs.newTab()).toBe(true)
-    await wait(() => setup.tabs.current() === "third" && setup.tabs.tabs().some((tab) => tab.sessionID === "third"))
+    await wait(
+      () => setup.tabs.current() === "third" && setup.tabs.tabs().some((tab) => tab.sessionID === "third"),
+    )

    expect(setup.tabs.newTab()).toBe(false)
    expect(setup.tabs.tabs().find((tab) => tab.sessionID === "third")?.title).toBe(NEW_SESSION_TAB_TITLE)
@@ -1,44 +0,0 @@
-/** @jsxImportSource @opentui/solid */
-import { expect, test } from "bun:test"
-import { testRender } from "@opentui/solid"
-import { mkdtempSync } from "fs"
-import { tmpdir } from "os"
-import path from "path"
-import { TuiAppProvider } from "../../src/context/runtime"
-import { StorageProvider, useStorage, type Storage } from "../../src/context/storage"
-import { TestTuiContexts } from "../fixture/tui-environment"
-
-test("memory storage is synchronous, keyed, and stable across lookups", async () => {
-  let storage!: Storage
-  function Probe() {
-    storage = useStorage()
-    return <box />
-  }
-  await testRender(() => (
-    <TestTuiContexts paths={{ state: mkdtempSync(path.join(tmpdir(), "opencode-storage-test-")) }}>
-      <TuiAppProvider value={{ name: "test", version: "test", channel: "test" }}>
-        <StorageProvider>
-          <Probe />
-        </StorageProvider>
-      </TuiAppProvider>
-    </TestTuiContexts>
-  ))
-
-  const [state, update] = storage.memory("tick", { initial: { count: 0, at: undefined as Date | undefined } })
-  // Synchronous update, no JSON round-trip: a Date survives as-is.
-  const now = new Date()
-  update((draft) => {
-    draft.count += 1
-    draft.at = now
-  })
-  expect(state.count).toBe(1)
-  expect(state.at).toBe(now)
-
-  // Same key returns the same live store (what hot-reload survival relies
-  // on); a different key is isolated.
-  const [again] = storage.memory("tick", { initial: { count: 99, at: undefined as Date | undefined } })
-  expect(again).toBe(state)
-  expect(again.count).toBe(1)
-  const [other] = storage.memory("other", { initial: { count: 0 } })
-  expect(other.count).toBe(0)
-})
@@ -1,6 +1,6 @@
 import { describe, expect, test } from "bun:test"
 import type { SessionMessageInfo } from "@opencode-ai/client"
-import { lastAssistantWithUsage } from "../../src/util/session"
+import { isDefaultTitle, lastAssistantWithUsage, sessionTitle } from "../../src/util/session"

 const assistant = (id: string, input: number): SessionMessageInfo => ({
  id,
@@ -13,6 +13,22 @@ const assistant = (id: string, input: number): SessionMessageInfo => ({
 })

 describe("util.session", () => {
+  test("recognizes generated parent and child titles", () => {
+    expect(isDefaultTitle(undefined)).toBeTrue()
+    expect(isDefaultTitle("New session - 2026-06-06T12:34:56.789Z")).toBeTrue()
+    expect(isDefaultTitle("Child session - 2026-06-06T12:34:56.789Z")).toBeTrue()
+    expect(isDefaultTitle("New session - custom")).toBeFalse()
+  })
+
+  test("derives display-only titles for untitled sessions", () => {
+    expect(sessionTitle({ title: undefined, time: { created: 0, updated: 0 } })).toBe(
+      "New session - 1970-01-01T00:00:00.000Z",
+    )
+    expect(sessionTitle({ title: undefined, parentID: "ses_parent", time: { created: 0, updated: 0 } })).toBe(
+      "Child session - 1970-01-01T00:00:00.000Z",
+    )
+  })
+
  test("tracks usage across undo and redo boundaries", () => {
    const messages = [assistant("msg_z", 10), assistant("msg_a", 30)]

@@ -28,7 +28,6 @@
  },
  "scripts": {
    "build": "bun run script/build.ts",
-    "test": "bun test --only-failures",
    "typecheck": "tsgo --noEmit"
  },
  "dependencies": {
@@ -1,36 +0,0 @@
-export * as SessionTitleFallback from "./session-title-fallback.js"
-
-const pattern = /^(New session|Child session) - \d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z$/
-
-interface Info {
-  readonly title?: string
-  readonly parentID?: string
-  readonly time: {
-    readonly created: number
-  }
-}
-
-/** Supplies the timestamped title required by compatibility surfaces. */
-export function withTimestampedFallback(info: Info) {
-  return info.title ?? fallback(info)
-}
-
-/** Supplies a compact human label and collapses historical timestamped fallbacks. */
-export function displayLabel(info: Pick<Info, "title" | "parentID">) {
-  if (!info.title) return info.parentID ? "Child session" : "New session"
-  return info.title.match(pattern)?.[1] ?? info.title
-}
-
-/** Recognizes missing and historical root or child fallback titles. */
-export function isFallbackTitle(title?: string) {
-  return title === undefined || pattern.test(title)
-}
-
-/** Recognizes a missing title or the exact root fallback for this session. */
-export function isExactRootFallback(info: Pick<Info, "title" | "time">) {
-  return info.title === undefined || info.title === fallback({ time: info.time })
-}
-
-function fallback(info: Pick<Info, "parentID" | "time">) {
-  return `${info.parentID ? "Child" : "New"} session - ${new Date(info.time.created).toISOString()}`
-}
@@ -1,49 +0,0 @@
-import { describe, expect, test } from "bun:test"
-import { SessionTitleFallback } from "../src/session-title-fallback.js"
-
-const root = { title: undefined, time: { created: 0 } }
-const child = { ...root, parentID: "ses_parent" }
-
-describe("SessionTitleFallback", () => {
-  test("supplies timestamped compatibility titles", () => {
-    expect(SessionTitleFallback.withTimestampedFallback(root)).toBe("New session - 1970-01-01T00:00:00.000Z")
-    expect(SessionTitleFallback.withTimestampedFallback(child)).toBe("Child session - 1970-01-01T00:00:00.000Z")
-    expect(SessionTitleFallback.withTimestampedFallback({ ...root, title: "Generated title" })).toBe("Generated title")
-    expect(SessionTitleFallback.withTimestampedFallback({ ...root, title: "" })).toBe("")
-  })
-
-  test("supplies compact display labels", () => {
-    expect(SessionTitleFallback.displayLabel(root)).toBe("New session")
-    expect(SessionTitleFallback.displayLabel(child)).toBe("Child session")
-    expect(SessionTitleFallback.displayLabel({ title: "", parentID: "ses_parent" })).toBe("Child session")
-    expect(SessionTitleFallback.displayLabel({ title: "New session - 2026-07-30T18:45:03.662Z" })).toBe("New session")
-    expect(SessionTitleFallback.displayLabel({ title: "Child session - 2026-07-30T18:45:03.662Z" })).toBe(
-      "Child session",
-    )
-    expect(SessionTitleFallback.displayLabel({ title: "Generated title" })).toBe("Generated title")
-  })
-
-  test("recognizes historical fallback titles", () => {
-    expect(SessionTitleFallback.isFallbackTitle(undefined)).toBeTrue()
-    expect(SessionTitleFallback.isFallbackTitle("New session - 2026-07-30T18:45:03.662Z")).toBeTrue()
-    expect(SessionTitleFallback.isFallbackTitle("Child session - 2026-07-30T18:45:03.662Z")).toBeTrue()
-    expect(SessionTitleFallback.isFallbackTitle("")).toBeFalse()
-    expect(SessionTitleFallback.isFallbackTitle("New session - custom")).toBeFalse()
-  })
-
-  test("recognizes only the fallback associated with a session", () => {
-    expect(SessionTitleFallback.isExactRootFallback(root)).toBeTrue()
-    expect(
-      SessionTitleFallback.isExactRootFallback({ ...root, title: "New session - 1970-01-01T00:00:00.000Z" }),
-    ).toBeTrue()
-    expect(
-      SessionTitleFallback.isExactRootFallback({ ...root, title: "New session - 2099-01-01T00:00:00.000Z" }),
-    ).toBeFalse()
-    expect(
-      SessionTitleFallback.isExactRootFallback({
-        ...child,
-        title: "Child session - 1970-01-01T00:00:00.000Z",
-      }),
-    ).toBeFalse()
-  })
-})
@@ -95,7 +95,7 @@ Add `compaction` to any [OpenCode configuration file](/config):
 | `auto` | `true` | Runs the preflight context-size check. It does not disable manual compaction or one-shot provider-overflow recovery. |
 | `prune` | None | Accepted by the V2 schema, but currently has no runtime effect. V2 does not prune old tool outputs in place. |
 | `keep.tokens` | `8000` | Approximate number of tokens from the newest serialized conversation context to retain beside the summary. |
-| `buffer` | `20000` | Safety reserve below an explicit input limit. Without one, it is the minimum context reserve and the model output allowance wins when larger. |
+| `buffer` | `20000` | Token reserve used by the automatic threshold. The requested model output allowance wins when it is larger. |

 `keep.tokens` and `buffer` accept non-negative integers. Larger `keep.tokens`
 preserves more recent detail but leaves less room for future work. Larger