{"version":3,"file":"rpc-mode.d.ts","sourceRoot":"","sources":["../../../src/modes/rpc/rpc-mode.ts"],"names":[],"mappings":"AAAA;;;;;;;;;;;GAWG;AAGH,OAAO,KAAK,EAAE,mBAAmB,EAAE,MAAM,qCAAqC,CAAC;AAqB/E,YAAY,EACX,UAAU,EACV,qBAAqB,EACrB,sBAAsB,EACtB,WAAW,EACX,eAAe,GACf,MAAM,gBAAgB,CAAC;AAExB;;;GAGG;AACH,wBAAsB,UAAU,CAAC,WAAW,EAAE,mBAAmB,GAAG,OAAO,CAAC,KAAK,CAAC,CAksBjF","sourcesContent":["/**\n * RPC mode: Headless operation with JSON stdin/stdout protocol.\n *\n * Used for embedding the agent in other applications.\n * Receives commands as JSON on stdin, outputs events and responses as JSON on stdout.\n *\n * Protocol:\n * - Commands: JSON objects with `type` field, optional `id` for correlation\n * - Responses: JSON objects with `type: \"response\"`, `command`, `success`, and optional `data`/`error`\n * - Events: AgentSessionEvent objects streamed as they occur\n * - Extension UI: Extension UI requests are emitted, client responds with extension_ui_response\n */\n\nimport * as crypto from \"node:crypto\";\nimport type { AgentSessionRuntime } from \"../../core/agent-session-runtime.js\";\nimport type {\n\tExtensionUIContext,\n\tExtensionUIDialogOptions,\n\tExtensionWidgetOptions,\n\tWorkingIndicatorOptions,\n} from \"../../core/extensions/index.js\";\nimport { takeOverStdout, writeRawStdout } from \"../../core/output-guard.js\";\nimport { killTrackedDetachedChildren } from \"../../utils/shell.js\";\nimport { type Theme, theme } from \"../interactive/theme/theme.js\";\nimport { attachJsonlLineReader, serializeJsonLine } from \"./jsonl.js\";\nimport type {\n\tRpcCommand,\n\tRpcExtensionUIRequest,\n\tRpcExtensionUIResponse,\n\tRpcResponse,\n\tRpcSessionState,\n\tRpcSlashCommand,\n} from \"./rpc-types.js\";\n\n// Re-export types for consumers\nexport type {\n\tRpcCommand,\n\tRpcExtensionUIRequest,\n\tRpcExtensionUIResponse,\n\tRpcResponse,\n\tRpcSessionState,\n} from \"./rpc-types.js\";\n\n/**\n * Run in RPC mode.\n * Listens for JSON commands on stdin, outputs events and responses on stdout.\n */\nexport async function runRpcMode(runtimeHost: AgentSessionRuntime): Promise<never> {\n\ttakeOverStdout();\n\tlet session = runtimeHost.session;\n\tlet unsubscribe: (() => void) | undefined;\n\n\tconst output = (obj: RpcResponse | RpcExtensionUIRequest | object) => {\n\t\twriteRawStdout(serializeJsonLine(obj));\n\t};\n\n\tconst success = <T extends RpcCommand[\"type\"]>(\n\t\tid: string | undefined,\n\t\tcommand: T,\n\t\tdata?: object | null,\n\t): RpcResponse => {\n\t\tif (data === undefined) {\n\t\t\treturn { id, type: \"response\", command, success: true } as RpcResponse;\n\t\t}\n\t\treturn { id, type: \"response\", command, success: true, data } as RpcResponse;\n\t};\n\n\tconst error = (id: string | undefined, command: string, message: string): RpcResponse => {\n\t\treturn { id, type: \"response\", command, success: false, error: message };\n\t};\n\n\t// Pending extension UI requests waiting for response\n\tconst pendingExtensionRequests = new Map<\n\t\tstring,\n\t\t{ resolve: (value: any) => void; reject: (error: Error) => void }\n\t>();\n\n\t// Shutdown request flag\n\tlet shutdownRequested = false;\n\tlet shuttingDown = false;\n\tconst signalCleanupHandlers: Array<() => void> = [];\n\n\t/** Helper for dialog methods with signal/timeout support */\n\tfunction createDialogPromise<T>(\n\t\topts: ExtensionUIDialogOptions | undefined,\n\t\tdefaultValue: T,\n\t\trequest: Record<string, unknown>,\n\t\tparseResponse: (response: RpcExtensionUIResponse) => T,\n\t): Promise<T> {\n\t\tif (opts?.signal?.aborted) return Promise.resolve(defaultValue);\n\n\t\tconst id = crypto.randomUUID();\n\t\treturn new Promise((resolve, reject) => {\n\t\t\tlet timeoutId: ReturnType<typeof setTimeout> | undefined;\n\n\t\t\tconst cleanup = () => {\n\t\t\t\tif (timeoutId) clearTimeout(timeoutId);\n\t\t\t\topts?.signal?.removeEventListener(\"abort\", onAbort);\n\t\t\t\tpendingExtensionRequests.delete(id);\n\t\t\t};\n\n\t\t\tconst onAbort = () => {\n\t\t\t\tcleanup();\n\t\t\t\tresolve(defaultValue);\n\t\t\t};\n\t\t\topts?.signal?.addEventListener(\"abort\", onAbort, { once: true });\n\n\t\t\tif (opts?.timeout) {\n\t\t\t\ttimeoutId = setTimeout(() => {\n\t\t\t\t\tcleanup();\n\t\t\t\t\tresolve(defaultValue);\n\t\t\t\t}, opts.timeout);\n\t\t\t}\n\n\t\t\tpendingExtensionRequests.set(id, {\n\t\t\t\tresolve: (response: RpcExtensionUIResponse) => {\n\t\t\t\t\tcleanup();\n\t\t\t\t\tresolve(parseResponse(response));\n\t\t\t\t},\n\t\t\t\treject,\n\t\t\t});\n\t\t\toutput({ type: \"extension_ui_request\", id, ...request } as RpcExtensionUIRequest);\n\t\t});\n\t}\n\n\t/**\n\t * Create an extension UI context that uses the RPC protocol.\n\t */\n\tconst createExtensionUIContext = (): ExtensionUIContext => ({\n\t\tselect: (title, options, opts) =>\n\t\t\tcreateDialogPromise(opts, undefined, { method: \"select\", title, options, timeout: opts?.timeout }, (r) =>\n\t\t\t\t\"cancelled\" in r && r.cancelled ? undefined : \"value\" in r ? r.value : undefined,\n\t\t\t),\n\n\t\tconfirm: (title, message, opts) =>\n\t\t\tcreateDialogPromise(opts, false, { method: \"confirm\", title, message, timeout: opts?.timeout }, (r) =>\n\t\t\t\t\"cancelled\" in r && r.cancelled ? false : \"confirmed\" in r ? r.confirmed : false,\n\t\t\t),\n\n\t\tinput: (title, placeholder, opts) =>\n\t\t\tcreateDialogPromise(opts, undefined, { method: \"input\", title, placeholder, timeout: opts?.timeout }, (r) =>\n\t\t\t\t\"cancelled\" in r && r.cancelled ? undefined : \"value\" in r ? r.value : undefined,\n\t\t\t),\n\n\t\tnotify(message: string, type?: \"info\" | \"warning\" | \"error\"): void {\n\t\t\t// Fire and forget - no response needed\n\t\t\toutput({\n\t\t\t\ttype: \"extension_ui_request\",\n\t\t\t\tid: crypto.randomUUID(),\n\t\t\t\tmethod: \"notify\",\n\t\t\t\tmessage,\n\t\t\t\tnotifyType: type,\n\t\t\t} as RpcExtensionUIRequest);\n\t\t},\n\n\t\tonTerminalInput(): () => void {\n\t\t\t// Raw terminal input not supported in RPC mode\n\t\t\treturn () => {};\n\t\t},\n\n\t\tsetStatus(key: string, text: string | undefined): void {\n\t\t\t// Fire and forget - no response needed\n\t\t\toutput({\n\t\t\t\ttype: \"extension_ui_request\",\n\t\t\t\tid: crypto.randomUUID(),\n\t\t\t\tmethod: \"setStatus\",\n\t\t\t\tstatusKey: key,\n\t\t\t\tstatusText: text,\n\t\t\t} as RpcExtensionUIRequest);\n\t\t},\n\n\t\tsetWorkingMessage(_message?: string): void {\n\t\t\t// Working message not supported in RPC mode - requires TUI loader access\n\t\t},\n\n\t\tsetWorkingVisible(_visible: boolean): void {\n\t\t\t// Working visibility not supported in RPC mode - requires TUI loader access\n\t\t},\n\n\t\tsetWorkingIndicator(_options?: WorkingIndicatorOptions): void {\n\t\t\t// Working indicator customization not supported in RPC mode - requires TUI loader access\n\t\t},\n\n\t\tsetHiddenThinkingLabel(_label?: string): void {\n\t\t\t// Hidden thinking label not supported in RPC mode - requires TUI message rendering access\n\t\t},\n\n\t\tsetWidget(key: string, content: unknown, options?: ExtensionWidgetOptions): void {\n\t\t\t// Only support string arrays in RPC mode - factory functions are ignored\n\t\t\tif (content === undefined || Array.isArray(content)) {\n\t\t\t\toutput({\n\t\t\t\t\ttype: \"extension_ui_request\",\n\t\t\t\t\tid: crypto.randomUUID(),\n\t\t\t\t\tmethod: \"setWidget\",\n\t\t\t\t\twidgetKey: key,\n\t\t\t\t\twidgetLines: content as string[] | undefined,\n\t\t\t\t\twidgetPlacement: options?.placement,\n\t\t\t\t} as RpcExtensionUIRequest);\n\t\t\t}\n\t\t\t// Component factories are not supported in RPC mode - would need TUI access\n\t\t},\n\n\t\tsetFooter(_factory: unknown): void {\n\t\t\t// Custom footer not supported in RPC mode - requires TUI access\n\t\t},\n\n\t\tsetHeader(_factory: unknown): void {\n\t\t\t// Custom header not supported in RPC mode - requires TUI access\n\t\t},\n\n\t\tsetTitle(title: string): void {\n\t\t\t// Fire and forget - host can implement terminal title control\n\t\t\toutput({\n\t\t\t\ttype: \"extension_ui_request\",\n\t\t\t\tid: crypto.randomUUID(),\n\t\t\t\tmethod: \"setTitle\",\n\t\t\t\ttitle,\n\t\t\t} as RpcExtensionUIRequest);\n\t\t},\n\n\t\tasync custom() {\n\t\t\t// Custom UI not supported in RPC mode\n\t\t\treturn undefined as never;\n\t\t},\n\n\t\tpasteToEditor(text: string): void {\n\t\t\t// Paste handling not supported in RPC mode - falls back to setEditorText\n\t\t\tthis.setEditorText(text);\n\t\t},\n\n\t\tsetEditorText(text: string): void {\n\t\t\t// Fire and forget - host can implement editor control\n\t\t\toutput({\n\t\t\t\ttype: \"extension_ui_request\",\n\t\t\t\tid: crypto.randomUUID(),\n\t\t\t\tmethod: \"set_editor_text\",\n\t\t\t\ttext,\n\t\t\t} as RpcExtensionUIRequest);\n\t\t},\n\n\t\tgetEditorText(): string {\n\t\t\t// Synchronous method can't wait for RPC response\n\t\t\t// Host should track editor state locally if needed\n\t\t\treturn \"\";\n\t\t},\n\n\t\tasync editor(title: string, prefill?: string): Promise<string | undefined> {\n\t\t\tconst id = crypto.randomUUID();\n\t\t\treturn new Promise((resolve, reject) => {\n\t\t\t\tpendingExtensionRequests.set(id, {\n\t\t\t\t\tresolve: (response: RpcExtensionUIResponse) => {\n\t\t\t\t\t\tif (\"cancelled\" in response && response.cancelled) {\n\t\t\t\t\t\t\tresolve(undefined);\n\t\t\t\t\t\t} else if (\"value\" in response) {\n\t\t\t\t\t\t\tresolve(response.value);\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tresolve(undefined);\n\t\t\t\t\t\t}\n\t\t\t\t\t},\n\t\t\t\t\treject,\n\t\t\t\t});\n\t\t\t\toutput({ type: \"extension_ui_request\", id, method: \"editor\", title, prefill } as RpcExtensionUIRequest);\n\t\t\t});\n\t\t},\n\n\t\taddAutocompleteProvider(): void {\n\t\t\t// Autocomplete provider composition is not supported in RPC mode\n\t\t},\n\n\t\tsetEditorComponent(): void {\n\t\t\t// Custom editor components not supported in RPC mode\n\t\t},\n\n\t\tgetEditorComponent() {\n\t\t\t// Custom editor components not supported in RPC mode\n\t\t\treturn undefined;\n\t\t},\n\n\t\tget theme() {\n\t\t\treturn theme;\n\t\t},\n\n\t\tgetAllThemes() {\n\t\t\treturn [];\n\t\t},\n\n\t\tgetTheme(_name: string) {\n\t\t\treturn undefined;\n\t\t},\n\n\t\tsetTheme(_theme: string | Theme) {\n\t\t\t// Theme switching not supported in RPC mode\n\t\t\treturn { success: false, error: \"Theme switching not supported in RPC mode\" };\n\t\t},\n\n\t\tgetToolsExpanded() {\n\t\t\t// Tool expansion not supported in RPC mode - no TUI\n\t\t\treturn false;\n\t\t},\n\n\t\tsetToolsExpanded(_expanded: boolean) {\n\t\t\t// Tool expansion not supported in RPC mode - no TUI\n\t\t},\n\t});\n\n\truntimeHost.setRebindSession(async () => {\n\t\tawait rebindSession();\n\t});\n\n\tconst rebindSession = async (): Promise<void> => {\n\t\tsession = runtimeHost.session;\n\t\tawait session.bindExtensions({\n\t\t\tuiContext: createExtensionUIContext(),\n\t\t\tcommandContextActions: {\n\t\t\t\twaitForIdle: () => session.agent.waitForIdle(),\n\t\t\t\tnewSession: async (options) => runtimeHost.newSession(options),\n\t\t\t\tfork: async (entryId, forkOptions) => {\n\t\t\t\t\tconst result = await runtimeHost.fork(entryId, forkOptions);\n\t\t\t\t\treturn { cancelled: result.cancelled };\n\t\t\t\t},\n\t\t\t\tnavigateTree: async (targetId, options) => {\n\t\t\t\t\tconst result = await session.navigateTree(targetId, {\n\t\t\t\t\t\tsummarize: options?.summarize,\n\t\t\t\t\t\tcustomInstructions: options?.customInstructions,\n\t\t\t\t\t\treplaceInstructions: options?.replaceInstructions,\n\t\t\t\t\t\tlabel: options?.label,\n\t\t\t\t\t});\n\t\t\t\t\treturn { cancelled: result.cancelled };\n\t\t\t\t},\n\t\t\t\tswitchSession: async (sessionPath, options) => {\n\t\t\t\t\treturn runtimeHost.switchSession(sessionPath, options);\n\t\t\t\t},\n\t\t\t\treload: async () => {\n\t\t\t\t\tawait session.reload();\n\t\t\t\t},\n\t\t\t},\n\t\t\tshutdownHandler: () => {\n\t\t\t\tshutdownRequested = true;\n\t\t\t},\n\t\t\tonError: (err) => {\n\t\t\t\toutput({ type: \"extension_error\", extensionPath: err.extensionPath, event: err.event, error: err.error });\n\t\t\t},\n\t\t});\n\n\t\tunsubscribe?.();\n\t\tunsubscribe = session.subscribe((event) => {\n\t\t\toutput(event);\n\t\t});\n\t};\n\n\tconst registerSignalHandlers = (): void => {\n\t\tconst signals: NodeJS.Signals[] = [\"SIGTERM\"];\n\t\tif (process.platform !== \"win32\") {\n\t\t\tsignals.push(\"SIGHUP\");\n\t\t}\n\n\t\tfor (const signal of signals) {\n\t\t\tconst handler = () => {\n\t\t\t\tkillTrackedDetachedChildren();\n\t\t\t\tvoid shutdown(signal === \"SIGHUP\" ? 129 : 143);\n\t\t\t};\n\t\t\tprocess.on(signal, handler);\n\t\t\tsignalCleanupHandlers.push(() => process.off(signal, handler));\n\t\t}\n\t};\n\n\tawait rebindSession();\n\tregisterSignalHandlers();\n\n\t// Handle a single command\n\tconst handleCommand = async (command: RpcCommand): Promise<RpcResponse | undefined> => {\n\t\tconst id = command.id;\n\n\t\tswitch (command.type) {\n\t\t\t// =================================================================\n\t\t\t// Prompting\n\t\t\t// =================================================================\n\n\t\t\tcase \"prompt\": {\n\t\t\t\t// Start prompt handling immediately, but emit the authoritative response only after\n\t\t\t\t// prompt preflight succeeds. Queued and immediately handled prompts also count as success.\n\t\t\t\tlet preflightSucceeded = false;\n\t\t\t\tvoid session\n\t\t\t\t\t.prompt(command.message, {\n\t\t\t\t\t\timages: command.images,\n\t\t\t\t\t\tstreamingBehavior: command.streamingBehavior,\n\t\t\t\t\t\tsource: \"rpc\",\n\t\t\t\t\t\tpreflightResult: (didSucceed) => {\n\t\t\t\t\t\t\tif (didSucceed) {\n\t\t\t\t\t\t\t\tpreflightSucceeded = true;\n\t\t\t\t\t\t\t\toutput(success(id, \"prompt\"));\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t},\n\t\t\t\t\t})\n\t\t\t\t\t.catch((e) => {\n\t\t\t\t\t\tif (!preflightSucceeded) {\n\t\t\t\t\t\t\toutput(error(id, \"prompt\", e.message));\n\t\t\t\t\t\t}\n\t\t\t\t\t});\n\t\t\t\treturn undefined;\n\t\t\t}\n\n\t\t\tcase \"steer\": {\n\t\t\t\tawait session.steer(command.message, command.images);\n\t\t\t\treturn success(id, \"steer\");\n\t\t\t}\n\n\t\t\tcase \"follow_up\": {\n\t\t\t\tawait session.followUp(command.message, command.images);\n\t\t\t\treturn success(id, \"follow_up\");\n\t\t\t}\n\n\t\t\tcase \"abort\": {\n\t\t\t\tawait session.abort();\n\t\t\t\treturn success(id, \"abort\");\n\t\t\t}\n\n\t\t\tcase \"new_session\": {\n\t\t\t\tconst options = command.parentSession ? { parentSession: command.parentSession } : undefined;\n\t\t\t\tconst result = await runtimeHost.newSession(options);\n\t\t\t\tif (!result.cancelled) {\n\t\t\t\t\tawait rebindSession();\n\t\t\t\t}\n\t\t\t\treturn success(id, \"new_session\", result);\n\t\t\t}\n\n\t\t\t// =================================================================\n\t\t\t// State\n\t\t\t// =================================================================\n\n\t\t\tcase \"get_state\": {\n\t\t\t\tconst state: RpcSessionState = {\n\t\t\t\t\tmodel: session.model,\n\t\t\t\t\tthinkingLevel: session.thinkingLevel,\n\t\t\t\t\tisStreaming: session.isStreaming,\n\t\t\t\t\tisCompacting: session.isCompacting,\n\t\t\t\t\tsteeringMode: session.steeringMode,\n\t\t\t\t\tfollowUpMode: session.followUpMode,\n\t\t\t\t\tsessionFile: session.sessionFile,\n\t\t\t\t\tsessionId: session.sessionId,\n\t\t\t\t\tsessionName: session.sessionName,\n\t\t\t\t\tautoCompactionEnabled: session.autoCompactionEnabled,\n\t\t\t\t\tmessageCount: session.messages.length,\n\t\t\t\t\tpendingMessageCount: session.pendingMessageCount,\n\t\t\t\t};\n\t\t\t\treturn success(id, \"get_state\", state);\n\t\t\t}\n\n\t\t\t// =================================================================\n\t\t\t// Model\n\t\t\t// =================================================================\n\n\t\t\tcase \"set_model\": {\n\t\t\t\tconst models = await session.modelRegistry.getAvailable();\n\t\t\t\tconst model = models.find((m) => m.provider === command.provider && m.id === command.modelId);\n\t\t\t\tif (!model) {\n\t\t\t\t\treturn error(id, \"set_model\", `Model not found: ${command.provider}/${command.modelId}`);\n\t\t\t\t}\n\t\t\t\tawait session.setModel(model);\n\t\t\t\treturn success(id, \"set_model\", model);\n\t\t\t}\n\n\t\t\tcase \"cycle_model\": {\n\t\t\t\tconst result = await session.cycleModel();\n\t\t\t\tif (!result) {\n\t\t\t\t\treturn success(id, \"cycle_model\", null);\n\t\t\t\t}\n\t\t\t\treturn success(id, \"cycle_model\", result);\n\t\t\t}\n\n\t\t\tcase \"get_available_models\": {\n\t\t\t\tconst models = await session.modelRegistry.getAvailable();\n\t\t\t\treturn success(id, \"get_available_models\", { models });\n\t\t\t}\n\n\t\t\t// =================================================================\n\t\t\t// Thinking\n\t\t\t// =================================================================\n\n\t\t\tcase \"set_thinking_level\": {\n\t\t\t\tsession.setThinkingLevel(command.level);\n\t\t\t\treturn success(id, \"set_thinking_level\");\n\t\t\t}\n\n\t\t\tcase \"cycle_thinking_level\": {\n\t\t\t\tconst level = session.cycleThinkingLevel();\n\t\t\t\tif (!level) {\n\t\t\t\t\treturn success(id, \"cycle_thinking_level\", null);\n\t\t\t\t}\n\t\t\t\treturn success(id, \"cycle_thinking_level\", { level });\n\t\t\t}\n\n\t\t\t// =================================================================\n\t\t\t// Queue Modes\n\t\t\t// =================================================================\n\n\t\t\tcase \"set_steering_mode\": {\n\t\t\t\tsession.setSteeringMode(command.mode);\n\t\t\t\treturn success(id, \"set_steering_mode\");\n\t\t\t}\n\n\t\t\tcase \"set_follow_up_mode\": {\n\t\t\t\tsession.setFollowUpMode(command.mode);\n\t\t\t\treturn success(id, \"set_follow_up_mode\");\n\t\t\t}\n\n\t\t\t// =================================================================\n\t\t\t// Compaction\n\t\t\t// =================================================================\n\n\t\t\tcase \"compact\": {\n\t\t\t\tconst result = await session.compact(command.customInstructions);\n\t\t\t\treturn success(id, \"compact\", result);\n\t\t\t}\n\n\t\t\tcase \"set_auto_compaction\": {\n\t\t\t\tsession.setAutoCompactionEnabled(command.enabled);\n\t\t\t\treturn success(id, \"set_auto_compaction\");\n\t\t\t}\n\n\t\t\t// =================================================================\n\t\t\t// Retry\n\t\t\t// =================================================================\n\n\t\t\tcase \"set_auto_retry\": {\n\t\t\t\tsession.setAutoRetryEnabled(command.enabled);\n\t\t\t\treturn success(id, \"set_auto_retry\");\n\t\t\t}\n\n\t\t\tcase \"abort_retry\": {\n\t\t\t\tsession.abortRetry();\n\t\t\t\treturn success(id, \"abort_retry\");\n\t\t\t}\n\n\t\t\t// =================================================================\n\t\t\t// Bash\n\t\t\t// =================================================================\n\n\t\t\tcase \"bash\": {\n\t\t\t\tconst result = await session.executeBash(command.command);\n\t\t\t\treturn success(id, \"bash\", result);\n\t\t\t}\n\n\t\t\tcase \"abort_bash\": {\n\t\t\t\tsession.abortBash();\n\t\t\t\treturn success(id, \"abort_bash\");\n\t\t\t}\n\n\t\t\t// =================================================================\n\t\t\t// Session\n\t\t\t// =================================================================\n\n\t\t\tcase \"get_session_stats\": {\n\t\t\t\tconst stats = session.getSessionStats();\n\t\t\t\treturn success(id, \"get_session_stats\", stats);\n\t\t\t}\n\n\t\t\tcase \"export_html\": {\n\t\t\t\tconst path = await session.exportToHtml(command.outputPath);\n\t\t\t\treturn success(id, \"export_html\", { path });\n\t\t\t}\n\n\t\t\tcase \"switch_session\": {\n\t\t\t\tconst result = await runtimeHost.switchSession(command.sessionPath);\n\t\t\t\tif (!result.cancelled) {\n\t\t\t\t\tawait rebindSession();\n\t\t\t\t}\n\t\t\t\treturn success(id, \"switch_session\", result);\n\t\t\t}\n\n\t\t\tcase \"fork\": {\n\t\t\t\tconst result = await runtimeHost.fork(command.entryId);\n\t\t\t\tif (!result.cancelled) {\n\t\t\t\t\tawait rebindSession();\n\t\t\t\t}\n\t\t\t\treturn success(id, \"fork\", { text: result.selectedText, cancelled: result.cancelled });\n\t\t\t}\n\n\t\t\tcase \"clone\": {\n\t\t\t\tconst leafId = session.sessionManager.getLeafId();\n\t\t\t\tif (!leafId) {\n\t\t\t\t\treturn error(id, \"clone\", \"Cannot clone session: no current entry selected\");\n\t\t\t\t}\n\t\t\t\tconst result = await runtimeHost.fork(leafId, { position: \"at\" });\n\t\t\t\tif (!result.cancelled) {\n\t\t\t\t\tawait rebindSession();\n\t\t\t\t}\n\t\t\t\treturn success(id, \"clone\", { cancelled: result.cancelled });\n\t\t\t}\n\n\t\t\tcase \"get_fork_messages\": {\n\t\t\t\tconst messages = session.getUserMessagesForForking();\n\t\t\t\treturn success(id, \"get_fork_messages\", { messages });\n\t\t\t}\n\n\t\t\tcase \"get_last_assistant_text\": {\n\t\t\t\tconst text = session.getLastAssistantText();\n\t\t\t\treturn success(id, \"get_last_assistant_text\", { text });\n\t\t\t}\n\n\t\t\tcase \"set_session_name\": {\n\t\t\t\tconst name = command.name.trim();\n\t\t\t\tif (!name) {\n\t\t\t\t\treturn error(id, \"set_session_name\", \"Session name cannot be empty\");\n\t\t\t\t}\n\t\t\t\tsession.setSessionName(name);\n\t\t\t\treturn success(id, \"set_session_name\");\n\t\t\t}\n\n\t\t\t// =================================================================\n\t\t\t// Messages\n\t\t\t// =================================================================\n\n\t\t\tcase \"get_messages\": {\n\t\t\t\treturn success(id, \"get_messages\", { messages: session.messages });\n\t\t\t}\n\n\t\t\t// =================================================================\n\t\t\t// Commands (available for invocation via prompt)\n\t\t\t// =================================================================\n\n\t\t\tcase \"get_commands\": {\n\t\t\t\tconst commands: RpcSlashCommand[] = [];\n\n\t\t\t\tfor (const command of session.extensionRunner.getRegisteredCommands()) {\n\t\t\t\t\tcommands.push({\n\t\t\t\t\t\tname: command.invocationName,\n\t\t\t\t\t\tdescription: command.description,\n\t\t\t\t\t\tsource: \"extension\",\n\t\t\t\t\t\tsourceInfo: command.sourceInfo,\n\t\t\t\t\t});\n\t\t\t\t}\n\n\t\t\t\tfor (const template of session.promptTemplates) {\n\t\t\t\t\tcommands.push({\n\t\t\t\t\t\tname: template.name,\n\t\t\t\t\t\tdescription: template.description,\n\t\t\t\t\t\tsource: \"prompt\",\n\t\t\t\t\t\tsourceInfo: template.sourceInfo,\n\t\t\t\t\t});\n\t\t\t\t}\n\n\t\t\t\tfor (const skill of session.resourceLoader.getSkills().skills) {\n\t\t\t\t\tcommands.push({\n\t\t\t\t\t\tname: `skill:${skill.name}`,\n\t\t\t\t\t\tdescription: skill.description,\n\t\t\t\t\t\tsource: \"skill\",\n\t\t\t\t\t\tsourceInfo: skill.sourceInfo,\n\t\t\t\t\t});\n\t\t\t\t}\n\n\t\t\t\treturn success(id, \"get_commands\", { commands });\n\t\t\t}\n\n\t\t\tdefault: {\n\t\t\t\tconst unknownCommand = command as { type: string };\n\t\t\t\treturn error(undefined, unknownCommand.type, `Unknown command: ${unknownCommand.type}`);\n\t\t\t}\n\t\t}\n\t};\n\n\t/**\n\t * Check if shutdown was requested and perform shutdown if so.\n\t * Called after handling each command when waiting for the next command.\n\t */\n\tlet detachInput = () => {};\n\n\tasync function shutdown(exitCode = 0): Promise<never> {\n\t\tif (shuttingDown) {\n\t\t\tprocess.exit(exitCode);\n\t\t}\n\t\tshuttingDown = true;\n\t\tfor (const cleanup of signalCleanupHandlers) {\n\t\t\tcleanup();\n\t\t}\n\t\tunsubscribe?.();\n\t\tawait runtimeHost.dispose();\n\t\tdetachInput();\n\t\tprocess.stdin.pause();\n\t\tprocess.exit(exitCode);\n\t}\n\n\tasync function checkShutdownRequested(): Promise<void> {\n\t\tif (!shutdownRequested) return;\n\t\tawait shutdown();\n\t}\n\n\tconst handleInputLine = async (line: string) => {\n\t\tlet parsed: unknown;\n\t\ttry {\n\t\t\tparsed = JSON.parse(line);\n\t\t} catch (parseError: unknown) {\n\t\t\toutput(\n\t\t\t\terror(\n\t\t\t\t\tundefined,\n\t\t\t\t\t\"parse\",\n\t\t\t\t\t`Failed to parse command: ${parseError instanceof Error ? parseError.message : String(parseError)}`,\n\t\t\t\t),\n\t\t\t);\n\t\t\treturn;\n\t\t}\n\n\t\t// Handle extension UI responses\n\t\tif (\n\t\t\ttypeof parsed === \"object\" &&\n\t\t\tparsed !== null &&\n\t\t\t\"type\" in parsed &&\n\t\t\tparsed.type === \"extension_ui_response\"\n\t\t) {\n\t\t\tconst response = parsed as RpcExtensionUIResponse;\n\t\t\tconst pending = pendingExtensionRequests.get(response.id);\n\t\t\tif (pending) {\n\t\t\t\tpendingExtensionRequests.delete(response.id);\n\t\t\t\tpending.resolve(response);\n\t\t\t}\n\t\t\treturn;\n\t\t}\n\n\t\tconst command = parsed as RpcCommand;\n\t\ttry {\n\t\t\tconst response = await handleCommand(command);\n\t\t\tif (response) {\n\t\t\t\toutput(response);\n\t\t\t}\n\t\t\tawait checkShutdownRequested();\n\t\t} catch (commandError: unknown) {\n\t\t\toutput(\n\t\t\t\terror(\n\t\t\t\t\tcommand.id,\n\t\t\t\t\tcommand.type,\n\t\t\t\t\tcommandError instanceof Error ? commandError.message : String(commandError),\n\t\t\t\t),\n\t\t\t);\n\t\t}\n\t};\n\n\tconst onInputEnd = () => {\n\t\tvoid shutdown();\n\t};\n\tprocess.stdin.on(\"end\", onInputEnd);\n\n\tdetachInput = (() => {\n\t\tconst detachJsonl = attachJsonlLineReader(process.stdin, (line) => {\n\t\t\tvoid handleInputLine(line);\n\t\t});\n\t\treturn () => {\n\t\t\tdetachJsonl();\n\t\t\tprocess.stdin.off(\"end\", onInputEnd);\n\t\t};\n\t})();\n\n\t// Keep process alive forever\n\treturn new Promise(() => {});\n}\n"]}