feat(server,frontend): real-time sync architecture with message accumulator

- Add message-accumulator.js: cascades diff-based message accumulation
- Add 3-second cascade polling with broadcastToAll (was undefined!)
- Add /api/bridge/approve endpoint: tries accept/reject Step→Command→Terminal
- Add persistent approve/reject buttons in chat header toolbar
- Frontend: loadSessionMessages (trajectory + accumulated), applyNewMessages (WS push)
- Status change detection: _prevStatusKey tracking prevents unnecessary re-renders
- actionInProgress flag prevents DOM replacement during button fetch
- Known issues: Trajectory 341 hard limit, Cascade no command-approval state

.agents/workflows/check-gitea.md

@@ -26,15 +26,15 @@ $issues | ForEach-Object { Write-Host "#$($_.number) $($_.title)" }
 
 3. Wiki 페이지 목록:
 ```powershell
-python .agents\workflows\helpers\wiki_helper.py list
+C:\ProgramData\miniforge3\envs\gravity_web\python.exe .agents\workflows\helpers\wiki_helper.py list
 ```
 
 4. Wiki 페이지 읽기:
 ```powershell
-python .agents\workflows\helpers\wiki_helper.py read "Architecture"
+C:\ProgramData\miniforge3\envs\gravity_web\python.exe .agents\workflows\helpers\wiki_helper.py read "Architecture"
 ```
 
 5. Wiki 페이지 업데이트:
 ```powershell
-python .agents\workflows\helpers\wiki_helper.py update "페이지-제목" /tmp/wiki_content.md
+C:\ProgramData\miniforge3\envs\gravity_web\python.exe .agents\workflows\helpers\wiki_helper.py update "페이지-제목" /tmp/wiki_content.md
 ```