deploy(S4): Blender headless pipeline + WebAR client + backend fixes

backend/omega/research_engine.py

@@ -91,6 +91,33 @@ def _save_research_note(note: ResearchNote):
     except Exception as e:
         logging.error(f"ResearchEngine: DB save_note error: {e}")
 
+    # Mirror the note to any connected PC. The Space's disk is ephemeral — a
+    # rebuild restores the image-baked memory.db and everything learned since is
+    # gone. The PC has real disk and is the permanent archive, so each new note
+    # is pushed down the relay WebSocket as it is created. pc_relay_client
+    # INSERT OR IGNOREs by id, so repeats are harmless and ordering does not
+    # matter. Best-effort only: a disconnected PC must never break research.
+    try:
+        from backend.ws.agent_ws import ws_manager
+        payload = {
+            "event": "relay:research",
+            "payload": {"notes": [{
+                "id": note.id, "timestamp": note.timestamp, "category": note.category,
+                "title": note.title, "summary": note.summary, "source": note.source,
+                "importance": note.importance, "recommended_action": note.recommended_action,
+            }]},
+        }
+        import asyncio
+        try:
+            loop = asyncio.get_running_loop()
+            loop.create_task(ws_manager.broadcast(payload))
+        except RuntimeError:
+            # Called from a sync context with no running loop — skip rather than
+            # block the research thread.
+            pass
+    except Exception as e:
+        logging.debug(f"ResearchEngine: relay push skipped: {e}")
+
 
 def _save_proposal(proposal: PendingProposal):
     try:

backend/services/usb_monitor.py

@@ -24,6 +24,22 @@ except ImportError:
     usb = None
 
 def get_db_path():
+    # JARVIS_APP_DATA_DIR wins when set. backend/security/vault.py has always
+    # honoured it, but this copy did not — and this is the one the research
+    # engine and the vault actually call. The mismatch meant pointing the app at
+    # durable storage silently did nothing: notes kept landing in the
+    # image-baked memory.db and were wiped by every Space rebuild.
+    #
+    # Nothing changes when the variable is unset: the frozen and project-root
+    # paths below are reached exactly as before.
+    app_data = os.environ.get('JARVIS_APP_DATA_DIR', '').strip()
+    if app_data:
+        try:
+            os.makedirs(app_data, exist_ok=True)
+        except Exception:
+            pass
+        return os.path.join(app_data, 'memory.db')
+
     if getattr(sys, 'frozen', False):
         return os.path.join(os.environ.get('APPDATA', os.path.expanduser('~')), 'JARVIS_OS', 'memory.db')
     # abspath is backend/services/usb_monitor.py