refactor(tool): Tool.Context.metadata returns Effect (#21972)

packages/opencode/src/tool/bash.ts

@@ -385,7 +385,7 @@ export const BashTool = Tool.define(
       let expired = false
       let aborted = false
 
-      ctx.metadata({
+      yield* ctx.metadata({
         metadata: {
           output: "",
           description: input.description,
@@ -397,16 +397,15 @@ export const BashTool = Tool.define(
           const handle = yield* spawner.spawn(cmd(input.shell, input.name, input.command, input.cwd, input.env))
 
           yield* Effect.forkScoped(
-            Stream.runForEach(Stream.decodeText(handle.all), (chunk) =>
-              Effect.sync(() => {
-                output += chunk
-                ctx.metadata({
-                  metadata: {
-                    output: preview(output),
-                    description: input.description,
-                  },
-                })
-              }),
+            Stream.runForEach(Stream.decodeText(handle.all), (chunk) => {
+              output += chunk
+              return ctx.metadata({
+                metadata: {
+                  output: preview(output),
+                  description: input.description,
+                },
+              })
+            },
             ),
           )
 

packages/opencode/src/tool/edit.ts

@@ -158,7 +158,7 @@ export const EditTool = Tool.define(
             if (change.removed) filediff.deletions += change.count || 0
           }
 
-          ctx.metadata({
+          yield* ctx.metadata({
             metadata: {
               diff,
               filediff,

packages/opencode/src/tool/task.ts

@@ -109,7 +109,7 @@ export const TaskTool = Tool.define(
         providerID: msg.info.providerID,
       }
 
-      ctx.metadata({
+      yield* ctx.metadata({
         title: params.description,
         metadata: {
           sessionId: nextSession.id,

packages/opencode/src/tool/tool.ts

@@ -22,7 +22,7 @@ export namespace Tool {
     callID?: string
     extra?: { [key: string]: any }
     messages: MessageV2.WithParts[]
-    metadata(input: { title?: string; metadata?: M }): void
+    metadata(input: { title?: string; metadata?: M }): Effect.Effect<void>
     ask(input: Omit<Permission.Request, "id" | "sessionID" | "tool">): Effect.Effect<void>
   }