Release v5.1.3: Fix PostToolUse hook field name bug

Bug Fix:
- Changed tool_output to tool_response throughout PostToolUse hook chain
- PostToolUse events provide tool_response field, not tool_output
- Updated save-hook.ts to send tool_response
- Updated worker-service.ts endpoint to accept tool_response
- Updated worker-service-v2.ts for consistency
- Updated worker-types.ts interfaces (PendingMessage, ObservationData)
- Updated SessionManager.ts message queue
- Updated SDKAgent.ts observation prompt builder

Impact: Fixes observation capture for PostToolUse events. Previous version was sending undefined for tool responses, causing incomplete observations.

Files changed:
- src/hooks/save-hook.ts (interface + destructuring + fetch body)
- src/services/worker-service.ts (ObservationMessage interface + handler + SDK prompt)
- src/services/worker-service-v2.ts (handler)
- src/services/worker-types.ts (PendingMessage + ObservationData interfaces)
- src/services/worker/SessionManager.ts (queue push)
- src/services/worker/SDKAgent.ts (observation prompt)
- plugin/scripts/*.js (rebuilt)
- Version bumped to 5.1.3 (patch)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/hooks/save-hook.ts

@@ -14,7 +14,7 @@ export interface PostToolUseInput {
   cwd: string;
   tool_name: string;
   tool_input: any;
-  tool_output: any;
+  tool_response: any;
   [key: string]: any;
 }
 
@@ -31,7 +31,7 @@ async function saveHook(input?: PostToolUseInput): Promise<void> {
     throw new Error('saveHook requires input');
   }
 
-  const { session_id, tool_name, tool_input, tool_output } = input;
+  const { session_id, tool_name, tool_input, tool_response } = input;
 
   if (SKIP_TOOLS.has(tool_name)) {
     console.log(createHookResponse('PostToolUse', true));
@@ -64,7 +64,7 @@ async function saveHook(input?: PostToolUseInput): Promise<void> {
       body: JSON.stringify({
         tool_name,
         tool_input: tool_input !== undefined ? JSON.stringify(tool_input) : '{}',
-        tool_output: tool_output !== undefined ? JSON.stringify(tool_output) : '{}',
+        tool_response: tool_response !== undefined ? JSON.stringify(tool_response) : '{}',
         prompt_number: promptNumber
       }),
       signal: AbortSignal.timeout(2000)

src/services/worker-service-v2.ts

@@ -206,12 +206,12 @@ export class WorkerService {
   private handleObservations(req: Request, res: Response): void {
     try {
       const sessionDbId = parseInt(req.params.sessionDbId, 10);
-      const { tool_name, tool_input, tool_output, prompt_number } = req.body;
+      const { tool_name, tool_input, tool_response, prompt_number } = req.body;
 
       this.sessionManager.queueObservation(sessionDbId, {
         tool_name,
         tool_input,
-        tool_output,
+        tool_response,
         prompt_number
       });
 

src/services/worker-service.ts

@@ -73,7 +73,7 @@ interface ObservationMessage {
   type: 'observation';
   tool_name: string;
   tool_input: string;
-  tool_output: string;
+  tool_response: string;
   prompt_number: number;
 }
 
@@ -753,11 +753,11 @@ class WorkerService {
 
   /**
    * POST /sessions/:sessionDbId/observations
-   * Body: { tool_name, tool_input, tool_output, prompt_number }
+   * Body: { tool_name, tool_input, tool_response, prompt_number }
    */
   private handleObservation(req: Request, res: Response): void {
     const sessionDbId = parseInt(req.params.sessionDbId, 10);
-    const { tool_name, tool_input, tool_output, prompt_number } = req.body;
+    const { tool_name, tool_input, tool_response, prompt_number } = req.body;
 
     const session = this.getOrCreateSession(sessionDbId);
     const toolStr = logger.formatTool(tool_name, tool_input);
@@ -771,7 +771,7 @@ class WorkerService {
       type: 'observation',
       tool_name,
       tool_input,
-      tool_output,
+      tool_response,
       prompt_number
     });
 
@@ -977,7 +977,7 @@ class WorkerService {
             id: 0,
             tool_name: message.tool_name,
             tool_input: message.tool_input,
-            tool_output: message.tool_output,
+            tool_output: message.tool_response,
             created_at_epoch: Date.now()
           });
 

src/services/worker-types.ts

@@ -25,14 +25,14 @@ export interface PendingMessage {
   type: 'observation' | 'summarize';
   tool_name?: string;
   tool_input?: any;
-  tool_output?: any;
+  tool_response?: any;
   prompt_number?: number;
 }
 
 export interface ObservationData {
   tool_name: string;
   tool_input: any;
-  tool_output: any;
+  tool_response: any;
   prompt_number: number;
 }
 

src/services/worker/SDKAgent.ts

@@ -137,7 +137,7 @@ export class SDKAgent {
               id: 0, // Not used in prompt
               tool_name: message.tool_name!,
               tool_input: JSON.stringify(message.tool_input),
-              tool_output: JSON.stringify(message.tool_output),
+              tool_output: JSON.stringify(message.tool_response),
               created_at_epoch: Date.now()
             })
           },

src/services/worker/SessionManager.ts

@@ -80,7 +80,7 @@ export class SessionManager {
       type: 'observation',
       tool_name: data.tool_name,
       tool_input: data.tool_input,
-      tool_output: data.tool_output,
+      tool_response: data.tool_response,
       prompt_number: data.prompt_number
     });