fix(ci): isolate session-manager tests to prevent flakiness

- Move src/tools/session-manager to isolated test section
- Prevents mock.module() pollution across parallel test runs
- Fixes 4 flaky storage tests that failed in CI

.github/workflows/ci.yml

@@ -56,6 +56,7 @@ jobs:
           bun test src/cli/doctor/format-default.test.ts
           bun test src/tools/call-omo-agent/sync-executor.test.ts
           bun test src/tools/call-omo-agent/session-creator.test.ts
+          bun test src/tools/session-manager
           bun test src/features/opencode-skill-loader/loader.test.ts
 
       - name: Run remaining tests
@@ -63,7 +64,7 @@ jobs:
           # Enumerate subdirectories/files explicitly to EXCLUDE mock-heavy files
           # that were already run in isolation above.
           # Excluded from src/cli: doctor/formatter.test.ts, doctor/format-default.test.ts
-          # Excluded from src/tools: call-omo-agent/sync-executor.test.ts, call-omo-agent/session-creator.test.ts
+          # Excluded from src/tools: call-omo-agent/sync-executor.test.ts, call-omo-agent/session-creator.test.ts, session-manager (all)
           bun test bin script src/config src/mcp src/index.test.ts \
             src/agents src/shared \
             src/cli/run src/cli/config-manager src/cli/mcp-oauth \
@@ -72,7 +73,7 @@ jobs:
             src/cli/doctor/runner.test.ts src/cli/doctor/checks \
             src/tools/ast-grep src/tools/background-task src/tools/delegate-task \
             src/tools/glob src/tools/grep src/tools/interactive-bash \
-            src/tools/look-at src/tools/lsp src/tools/session-manager \
+            src/tools/look-at src/tools/lsp \
             src/tools/skill src/tools/skill-mcp src/tools/slashcommand src/tools/task \
             src/tools/call-omo-agent/background-agent-executor.test.ts \
             src/tools/call-omo-agent/background-executor.test.ts \