fix: Qdrant backend support — topology, doctor, and community detection

- Fix build_runtime_graph to use backend-agnostic records_as_dataframe()
  and edges_as_dataframe() instead of LanceDB-specific open_table()
- Fix CLI topology command: JSON-RPC envelope + result extraction
- Fix community.py KeyError when graph has nodes but no edges
- Update doctor check (i) to report Qdrant collection counts when
  Qdrant is active, LanceDB versions when LanceDB is active
- Fix HIBERNATION startup exit: dispatch REQUEST_ARRIVED on boot
- Fix systemd unit: StartLimit* keys in [Unit] section
- Broaden capture.py exception handler for deferred capture failures
- Add records_as_dataframe() and edges_as_dataframe() to MemoryStore

deploy/systemd/iai-mcp-daemon.service

@@ -13,14 +13,14 @@
 [Unit]
 Description=IAI-MCP Sleep Daemon -- autonomous neural consolidation between sessions
 After=default.target
+StartLimitIntervalSec=60
+StartLimitBurst=3
 
 [Service]
 Type=simple
 ExecStart=%h/.venv/iai-mcp/bin/python -m iai_mcp.daemon
 Restart=on-failure
 RestartSec=30
-StartLimitIntervalSec=60
-StartLimitBurst=3
 
 Environment="IAI_MCP_STORE=%h/.iai-mcp"
 Environment="QDRANT_URL=http://192.168.0.22:6333"