feat(council-archive): register council tools and add write_output_to_file to task tool

- Register council_finalize and council_read in tool registry
- Add write_output_to_file param to delegate-task, propagate to LaunchInput
- Create council-archive barrel exports

src/plugin/tool-registry.ts

@@ -31,6 +31,7 @@ import {
   createHashlineEditTool,
   createPrepareCouncilPromptTool,
 } from "../tools"
+import { createCouncilFinalize, createCouncilRead } from "../tools/council-archive"
 import { getMainSessionID } from "../features/claude-code-session-state"
 import { filterDisabledTools } from "../shared/disabled-tools"
 import { isTaskSystemEnabled, log } from "../shared"
@@ -280,6 +281,8 @@ export function createToolRegistry(args: {
     ...taskToolsRecord,
     ...hashlineToolsRecord,
     prepare_council_prompt: createPrepareCouncilPromptTool(ctx.directory),
+    council_finalize: createCouncilFinalize(),
+    council_read: createCouncilRead(),
   }
 
   for (const toolDefinition of Object.values(allTools)) {

src/tools/council-archive/index.ts

@@ -0,0 +1,5 @@
+export { createCouncilFinalize } from "./create-council-finalize"
+export { createCouncilRead } from "./create-council-read"
+export { extractCouncilResponse, OPENING_TAG, CLOSING_TAG } from "./council-response-extractor"
+export type { CouncilResponseExtraction } from "./council-response-extractor"
+export type { CouncilFinalizeArgs, CouncilMemberResult, CouncilFinalizeResult } from "./types"

src/tools/delegate-task/background-task.ts

@@ -80,6 +80,7 @@ export async function executeBackgroundTask(
       skillContent: systemContent,
       category: args.category,
       sessionPermission: QUESTION_DENIED_SESSION_PERMISSION,
+      writeOutputToFile: args.write_output_to_file,
     })
 
     // OpenCode TUI's `Task` tool UI calculates toolcalls by looking up

src/tools/delegate-task/tools.ts

@@ -105,6 +105,7 @@ export function createDelegateTask(options: DelegateTaskToolOptions): ToolDefini
       subagent_type: tool.schema.string().optional().describe("REQUIRED if category not provided. Do NOT provide both category and subagent_type."),
       session_id: tool.schema.string().optional().describe("Existing Task session to continue"),
       command: tool.schema.string().optional().describe("The command that triggered this task"),
+      write_output_to_file: tool.schema.boolean().optional().describe("Write raw task output to file on completion"),
     },
     async execute(args: DelegateTaskArgs, toolContext) {
       const ctx = toolContext as ToolContextWithMetadata

src/tools/delegate-task/types.ts

@@ -17,6 +17,7 @@ export interface DelegateTaskArgs {
   session_id?: string
   command?: string
   load_skills: string[]
+  write_output_to_file?: boolean
   execute?: {
     task_id: string
     task_dir?: string

src/tools/index.ts

@@ -47,6 +47,7 @@ export {
 } from "./task"
 export { createHashlineEditTool } from "./hashline-edit"
 export { createPrepareCouncilPromptTool } from "./prepare-council-prompt"
+export { createCouncilFinalize, createCouncilRead } from "./council-archive"
 
 export function createBackgroundTools(manager: BackgroundManager, client: OpencodeClient): Record<string, ToolDefinition> {
   const outputManager: BackgroundOutputManager = manager