feat(phase-2): Theia HTTP sync via sync-server on port 3001

- theia-exec.ts: primary path is now HTTP sync (syncRepoToTheia) via
  sync-server.js running inside Theia on port 3001 — no docker socket needed
- syncRepoToTheia(giteaRepo): POST /sync → Theia git-pulls latest committed code
- isTheiaSyncAvailable(): health check before attempting sync
- docker exec path preserved for future use when socket is mounted
- agent-session-runner: use syncRepoToTheia after auto-commit
- server.ts: log both docker exec + HTTP sync status at startup

Made-with: Cursor

src/server.ts

@@ -13,7 +13,7 @@ import { PROTECTED_GITEA_REPOS } from './tools/security';
 import { orchestratorChat, listSessions, clearSession } from './orchestrator';
 import { atlasChat, listAtlasSessions, clearAtlasSession } from './atlas';
 import { LLMMessage, createLLM } from './llm';
-import { getTheiaContainer } from './theia-exec';
+import { getTheiaContainer, isTheiaSyncAvailable } from './theia-exec';
 
 const app = express();
 app.use(cors());
@@ -616,8 +616,11 @@ app.listen(PORT, () => {
     // Theia bridge status
     const theiaContainer = getTheiaContainer();
     if (theiaContainer) {
-        console.log(`Theia bridge: active (container: ${theiaContainer})`);
+        console.log(`Theia docker exec: active (container: ${theiaContainer})`);
     } else {
-        console.warn('Theia bridge: not available — docker socket not mounted or container not found. Commands will run locally.');
+        console.log('Theia docker exec: not available (docker socket not mounted) — using HTTP sync instead');
     }
+    isTheiaSyncAvailable().then(ok => {
+        console.log(`Theia HTTP sync: ${ok ? 'reachable at ' + (process.env.THEIA_SYNC_URL ?? 'http://theia-code-os:3001') : 'not reachable — sync will be skipped'}`);
+    });
 });