test: fix failing tests for mocks and API return types (#366)

* fix(chat): isolate concurrent session events by refactoring WebSocket event handling

Refactored the WebSocket event handling mechanism to use global listeners with session-specific event routing instead of per-session listeners. This prevents event cross-talk when multiple chat sessions run concurrently.

Key changes:
- Client: Added sessionEventHandlers Map to route events to appropriate sessions
- Client: Registered global listeners once per socket connection
- Server: Extracted message processing logic into handleMessage method
- Server: Improved Hermes session ID tracking with dedicated Map
- Server: Added replaceByHermesSessionId for targeted message replacement

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* test: fix failing tests for mocks and API return types

- Fixed sessions-routes.test.ts: added missing setWorkspace and listWorkspaceFolders mocks
- Fixed usage-store.test.ts: removed test for non-existent initUsageStore function
- Fixed profiles-store.test.ts: corrected createProfile API return type to { success: true }
- Fixed syntax error in usageStatsMock (ctx.body: → ctx.body =)

All tests now pass (314 passed | 2 skipped).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/server/usage-store.test.ts

@@ -20,7 +20,6 @@ vi.mock('../../packages/server/src/db/index', () => ({
 }))
 
 import {
-  initUsageStore,
   updateUsage,
   getUsage,
   getUsageBatch,
@@ -32,12 +31,6 @@ describe('Usage Store (JSON fallback)', () => {
     vi.clearAllMocks()
   })
 
-  it('initUsageStore calls ensureTable when SQLite is available', () => {
-    // In our mock, isSqliteAvailable returns false, so ensureTable should NOT be called
-    initUsageStore()
-    expect(mockEnsureTable).not.toHaveBeenCalled()
-  })
-
   it('updateUsage writes via jsonSet', () => {
     updateUsage('session-1', { inputTokens: 100, outputTokens: 50 })
     expect(mockJsonSet).toHaveBeenCalledWith(