Restore repo hash endpoint and align device list

Data/Server/server.py

@@ -356,6 +356,44 @@ def health():
     return jsonify({"status": "ok"})
 
 
+@app.route("/api/agent/repo_hash", methods=["GET"])
+def api_agent_repo_hash():
+    try:
+        repo = (request.args.get('repo') or _DEFAULT_REPO).strip()
+        branch = (request.args.get('branch') or _DEFAULT_BRANCH).strip()
+        refresh_flag = (request.args.get('refresh') or '').strip().lower()
+        ttl_raw = request.args.get('ttl')
+        if '/' not in repo:
+            return jsonify({"error": "repo must be in the form owner/name"}), 400
+        try:
+            ttl = int(ttl_raw) if ttl_raw else _REPO_HASH_INTERVAL
+        except ValueError:
+            ttl = _REPO_HASH_INTERVAL
+        ttl = max(30, min(ttl, 3600))
+        force_refresh = refresh_flag in {'1', 'true', 'yes', 'force', 'refresh'}
+        if repo == _DEFAULT_REPO and branch == _DEFAULT_BRANCH:
+            result = _refresh_default_repo_hash(force=force_refresh)
+        else:
+            result = _fetch_repo_head(repo, branch, ttl_seconds=ttl, force_refresh=force_refresh)
+        sha = (result.get('sha') or '').strip()
+        payload = {
+            'repo': repo,
+            'branch': branch,
+            'sha': sha if sha else None,
+            'cached': bool(result.get('cached')),
+            'age_seconds': result.get('age_seconds'),
+            'source': result.get('source'),
+        }
+        if result.get('error'):
+            payload['error'] = result['error']
+        if sha:
+            return jsonify(payload)
+        return jsonify(payload), 503
+    except Exception as exc:
+        _write_service_log('server', f'/api/agent/repo_hash error: {exc}')
+        return jsonify({"error": "internal error"}), 500
+
+
 @app.route("/api/repo/current_hash", methods=["GET"])
 def api_repo_current_hash():
     try: