fix: propagate InstanceRef across static function boundaries

- makeRuntime.provide reads InstanceRef from current Effect fiber when
  ALS is unavailable, bridging static function calls (like Bus.publish)
  that create new fibers from inside Effect code
- Database.transaction preserves Instance ALS via Instance.bind on the
  bun:sqlite transaction callback (native fn loses ALS)
- Instance.restore helper for bridging Effect→sync code with ALS
- InstanceState.withALS bridges InstanceRef back to ALS for sync callers
- prompt.ts: InstructionPrompt.clear wrapped with withALS
- Remove ALL provideInstance(dir) wrappers from prompt-effect tests

packages/opencode/src/effect/instance-state.ts

@@ -58,4 +58,7 @@ export namespace InstanceState {
 
   export const invalidate = <A, E, R>(self: InstanceState<A, E, R>) =>
     Effect.gen(function* () { return yield* ScopedCache.invalidate(self.cache, yield* directory) })
+
+  /** Run a sync function with Instance ALS restored from the InstanceRef. */
+  export const withALS = <T>(fn: () => T) => Effect.map(context, (ctx) => Instance.restore(ctx, fn))
 }

packages/opencode/src/effect/run-service.ts

@@ -6,12 +6,17 @@ import { InstanceRef } from "./instance-state"
 export const memoMap = Layer.makeMemoMapUnsafe()
 
 function provide<A, E, R>(effect: Effect.Effect<A, E, R>): Effect.Effect<A, E, R> {
+  // Try ALS first
   try {
     const ctx = Instance.current
     return Effect.provideService(effect, InstanceRef, ctx)
-  } catch {
-    return effect
-  }
+  } catch {}
+  // Try current Effect fiber's InstanceRef (for calls from inside Effect code
+  // that escapes to static functions, like sync callbacks calling Bus.publish)
+  const fiber = (globalThis as any)["~effect/Fiber/currentFiber"]
+  const ref = fiber?.services?.mapUnsafe?.get("~opencode/InstanceRef")
+  if (ref) return Effect.provideService(effect, InstanceRef, ref)
+  return effect
 }
 
 export function makeRuntime<I, S, E>(service: ServiceMap.Service<I, S>, layer: Layer.Layer<I, E>) {

packages/opencode/src/project/instance.ts

@@ -114,6 +114,14 @@ export const Instance = {
     const ctx = context.use()
     return ((...args: any[]) => context.provide(ctx, () => fn(...args))) as F
   },
+  /**
+   * Run a synchronous function within the given instance context ALS.
+   * Use this to bridge from Effect (where InstanceRef carries context)
+   * back to sync code that reads Instance.directory from ALS.
+   */
+  restore<R>(ctx: InstanceContext, fn: () => R): R {
+    return context.provide(ctx, fn)
+  },
   state<S>(init: () => S, dispose?: (state: Awaited<S>) => Promise<void>): () => S {
     return State.create(() => Instance.directory, init, dispose)
   },

packages/opencode/src/session/prompt.ts

@@ -979,7 +979,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
           variant,
         }
 
-        yield* Effect.addFinalizer(() => Effect.sync(() => InstructionPrompt.clear(info.id)))
+        yield* Effect.addFinalizer(() => InstanceState.withALS(() => InstructionPrompt.clear(info.id)))
 
         type Draft<T> = T extends MessageV2.Part ? Omit<T, "id"> & { id?: string } : never
         const assign = (part: Draft<MessageV2.Part>): MessageV2.Part => ({
@@ -1542,7 +1542,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
               }),
               Effect.fnUntraced(function* (exit) {
                 if (Exit.isFailure(exit) && Cause.hasInterruptsOnly(exit.cause)) yield* handle.abort()
-                InstructionPrompt.clear(handle.message.id)
+                yield* InstanceState.withALS(() => InstructionPrompt.clear(handle.message.id))
               }),
             )
             if (outcome === "break") break

packages/opencode/src/storage/db.ts

@@ -143,11 +143,10 @@ export namespace Database {
   }
 
   export function effect(fn: () => any | Promise<any>) {
-    const bound = Instance.bind(fn)
     try {
-      ctx.use().effects.push(bound)
+      ctx.use().effects.push(fn)
     } catch {
-      bound()
+      fn()
     }
   }
 
@@ -164,12 +163,11 @@ export namespace Database {
     } catch (err) {
       if (err instanceof Context.NotFound) {
         const effects: (() => void | Promise<void>)[] = []
-        const result = Client().transaction(
-          (tx: TxOrDb) => {
-            return ctx.provide({ tx, effects }, () => callback(tx))
-          },
-          { behavior: options?.behavior },
-        )
+        let txCallback = (tx: TxOrDb) => ctx.provide({ tx, effects }, () => callback(tx))
+        try {
+          txCallback = Instance.bind(txCallback)
+        } catch {}
+        const result = Client().transaction(txCallback, { behavior: options?.behavior })
         for (const effect of effects) effect()
         return result as NotPromise<T>
       }

packages/opencode/test/session/prompt-effect.test.ts

@@ -30,7 +30,7 @@ import { ToolRegistry } from "../../src/tool/registry"
 import { Truncate } from "../../src/tool/truncate"
 import { Log } from "../../src/util/log"
 import * as CrossSpawnSpawner from "../../src/effect/cross-spawn-spawner"
-import { provideInstance, provideTmpdirInstance, provideTmpdirServer } from "../fixture/fixture"
+import { provideTmpdirInstance, provideTmpdirServer } from "../fixture/fixture"
 import { testEffect } from "../lib/effect"
 import { TestLLMServer } from "../lib/llm-server"
 
@@ -451,7 +451,7 @@ it.live(
   "cancel interrupts loop and resolves with an assistant message",
   () =>
     provideTmpdirServer(
-      Effect.fnUntraced(function* ({ dir, llm }) {
+      Effect.fnUntraced(function* ({ llm }) {
         const prompt = yield* SessionPrompt.Service
         const sessions = yield* Session.Service
         const chat = yield* sessions.create({ title: "Pinned" })
@@ -461,10 +461,13 @@ it.live(
 
         yield* user(chat.id, "more")
 
-        const fiber = yield* prompt.loop({ sessionID: chat.id }).pipe(provideInstance(dir), Effect.forkChild)
+        const fiber = yield* prompt.loop({ sessionID: chat.id }).pipe(Effect.forkChild)
         yield* llm.wait(1)
-        yield* prompt.cancel(chat.id).pipe(provideInstance(dir))
+        yield* prompt.cancel(chat.id)
         const exit = yield* Fiber.await(fiber)
+        if (Exit.isFailure(exit)) {
+          for (const err of Cause.prettyErrors(exit.cause)) console.error("DEBUG CANCEL FAIL:", err)
+        }
         expect(Exit.isSuccess(exit)).toBe(true)
         if (Exit.isSuccess(exit)) {
           expect(exit.value.info.role).toBe("assistant")
@@ -479,16 +482,16 @@ it.live(
   "cancel records MessageAbortedError on interrupted process",
   () =>
     provideTmpdirServer(
-      Effect.fnUntraced(function* ({ dir, llm }) {
+      Effect.fnUntraced(function* ({ llm }) {
         const prompt = yield* SessionPrompt.Service
         const sessions = yield* Session.Service
         const chat = yield* sessions.create({ title: "Pinned" })
         yield* llm.hang
         yield* user(chat.id, "hello")
 
-        const fiber = yield* prompt.loop({ sessionID: chat.id }).pipe(provideInstance(dir), Effect.forkChild)
+        const fiber = yield* prompt.loop({ sessionID: chat.id }).pipe(Effect.forkChild)
         yield* llm.wait(1)
-        yield* prompt.cancel(chat.id).pipe(provideInstance(dir))
+        yield* prompt.cancel(chat.id)
         const exit = yield* Fiber.await(fiber)
         expect(Exit.isSuccess(exit)).toBe(true)
         if (Exit.isSuccess(exit)) {
@@ -570,19 +573,19 @@ it.live(
   "cancel with queued callers resolves all cleanly",
   () =>
     provideTmpdirServer(
-      Effect.fnUntraced(function* ({ dir, llm }) {
+      Effect.fnUntraced(function* ({ llm }) {
         const prompt = yield* SessionPrompt.Service
         const sessions = yield* Session.Service
         const chat = yield* sessions.create({ title: "Pinned" })
         yield* llm.hang
         yield* user(chat.id, "hello")
 
-        const a = yield* prompt.loop({ sessionID: chat.id }).pipe(provideInstance(dir), Effect.forkChild)
+        const a = yield* prompt.loop({ sessionID: chat.id }).pipe(Effect.forkChild)
         yield* llm.wait(1)
-        const b = yield* prompt.loop({ sessionID: chat.id }).pipe(provideInstance(dir), Effect.forkChild)
+        const b = yield* prompt.loop({ sessionID: chat.id }).pipe(Effect.forkChild)
         yield* Effect.sleep(50)
 
-        yield* prompt.cancel(chat.id).pipe(provideInstance(dir))
+        yield* prompt.cancel(chat.id)
         const [exitA, exitB] = yield* Effect.all([Fiber.await(a), Fiber.await(b)])
         expect(Exit.isSuccess(exitA)).toBe(true)
         expect(Exit.isSuccess(exitB)).toBe(true)
@@ -620,7 +623,7 @@ it.live(
   "concurrent loop callers all receive same error result",
   () =>
     provideTmpdirServer(
-      Effect.fnUntraced(function* ({ dir, llm }) {
+      Effect.fnUntraced(function* ({ llm }) {
         const prompt = yield* SessionPrompt.Service
         const sessions = yield* Session.Service
         const chat = yield* sessions.create({ title: "Pinned" })
@@ -631,8 +634,7 @@ it.live(
         const [a, b] = yield* Effect.all(
           [prompt.loop({ sessionID: chat.id }), prompt.loop({ sessionID: chat.id })],
           { concurrency: "unbounded" },
-        ).pipe(provideInstance(dir))
-
+        )
         expect(a.info.id).toBe(b.info.id)
         expect(a.info.role).toBe("assistant")
       }),
@@ -645,7 +647,7 @@ it.live(
   "prompt submitted during an active run is included in the next LLM input",
   () =>
     provideTmpdirServer(
-      Effect.fnUntraced(function* ({ dir, llm }) {
+      Effect.fnUntraced(function* ({ llm }) {
         const gate = defer<void>()
         const prompt = yield* SessionPrompt.Service
         const sessions = yield* Session.Service
@@ -661,7 +663,7 @@ it.live(
             model: ref,
             parts: [{ type: "text", text: "first" }],
           })
-          .pipe(provideInstance(dir), Effect.forkChild)
+          .pipe(Effect.forkChild)
 
         yield* llm.wait(1)
 
@@ -674,7 +676,7 @@ it.live(
             model: ref,
             parts: [{ type: "text", text: "second" }],
           })
-          .pipe(provideInstance(dir), Effect.forkChild)
+          .pipe(Effect.forkChild)
 
         yield* Effect.promise(async () => {
           const end = Date.now() + 5000