fix: align discussion workspace and tool schemas

test/discussion-service.test.ts

@@ -62,6 +62,7 @@ test('handleCallback closes an active discussion and records the resolved summar
     api: makeApi() as any,
     workspaceRoot: workspace,
     forceNoReplyForSession: (sessionKey) => forcedSessions.push(sessionKey),
+    getDiscussionSessionKeys: () => ['session-beta-helper'],
   });
 
   await service.initDiscussion({
@@ -69,6 +70,7 @@ test('handleCallback closes an active discussion and records the resolved summar
     originChannelId: 'origin-2',
     initiatorAgentId: 'agent-beta',
     initiatorSessionId: 'session-beta',
+    initiatorWorkspaceRoot: workspace,
     discussGuide: 'Write the wrap-up.',
   });
 
@@ -84,7 +86,7 @@ test('handleCallback closes an active discussion and records the resolved summar
   assert.equal(result.discussion.status, 'closed');
   assert.equal(result.discussion.summaryPath, fs.realpathSync.native(summaryAbsPath));
   assert.ok(result.discussion.completedAt);
-  assert.deepEqual(forcedSessions, ['session-beta']);
+  assert.deepEqual(forcedSessions.sort(), ['session-beta', 'session-beta-helper']);
 });
 
 test('handleCallback rejects duplicate callback after the discussion is already closed', async () => {
@@ -142,6 +144,7 @@ test('handleCallback accepts a valid summaryPath inside the initiator workspace'
     originChannelId: 'origin-4',
     initiatorAgentId: 'agent-delta',
     initiatorSessionId: 'session-delta',
+    initiatorWorkspaceRoot: workspace,
     discussGuide: 'Path validation.',
   });
 
@@ -181,6 +184,39 @@ test('handleCallback rejects a missing summary file', async () => {
   );
 });
 
+test('handleCallback uses the initiator workspace root instead of the process cwd', async () => {
+  const workspace = makeWorkspace();
+  const summaryRelPath = path.join('notes', 'initiator-only.md');
+  const summaryAbsPath = path.join(workspace, summaryRelPath);
+  fs.mkdirSync(path.dirname(summaryAbsPath), { recursive: true });
+  fs.writeFileSync(summaryAbsPath, 'initiator workspace file\n');
+
+  const differentDefaultWorkspace = makeWorkspace();
+  const service = createDiscussionService({
+    api: makeApi() as any,
+    workspaceRoot: differentDefaultWorkspace,
+    forceNoReplyForSession: () => {},
+  });
+
+  await service.initDiscussion({
+    discussionChannelId: 'discussion-workspace-root-1',
+    originChannelId: 'origin-6a',
+    initiatorAgentId: 'agent-zeta-root',
+    initiatorSessionId: 'session-zeta-root',
+    initiatorWorkspaceRoot: workspace,
+    discussGuide: 'Use initiator workspace root.',
+  });
+
+  const result = await service.handleCallback({
+    channelId: 'discussion-workspace-root-1',
+    summaryPath: summaryRelPath,
+    callerAgentId: 'agent-zeta-root',
+    callerSessionKey: 'session-zeta-root',
+  });
+
+  assert.equal(result.summaryPath, fs.realpathSync.native(summaryAbsPath));
+});
+
 test('handleCallback rejects .. path traversal outside the initiator workspace', async () => {
   const workspace = makeWorkspace();
   const outsideDir = makeWorkspace();
@@ -198,6 +234,7 @@ test('handleCallback rejects .. path traversal outside the initiator workspace',
     originChannelId: 'origin-6',
     initiatorAgentId: 'agent-zeta',
     initiatorSessionId: 'session-zeta',
+    initiatorWorkspaceRoot: workspace,
     discussGuide: 'Reject traversal.',
   });
 
@@ -232,6 +269,7 @@ test('handleCallback rejects an absolute path outside the initiator workspace',
     originChannelId: 'origin-7',
     initiatorAgentId: 'agent-eta',
     initiatorSessionId: 'session-eta',
+    initiatorWorkspaceRoot: workspace,
     discussGuide: 'Reject absolute outside path.',
   });