feat: add DB persistence, real-time WebSocket, goal preprocessor, and Android companion app

- Add device/session/step DB persistence in server agent loop
- Add goal preprocessor for compound goals (e.g., "open YouTube and search X")
- Add step-level logging to agent loop
- Fix dashboard WebSocket auth (direct DB token lookup instead of auth.api)
- Fix web layout to use locals.session.token instead of cookie
- Add dashboard-ws.svelte.ts WebSocket store with auto-reconnect
- Rewrite devices page with direct DB queries and real-time updates
- Add device detail page with live step display and session history
- Add Android companion app resources, themes, and screen capture consent

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/flow.ts

@@ -154,6 +154,8 @@ function executeFlowStep(
         return executeAction({ action: "enter" });
       case "clear":
         return executeAction({ action: "clear" });
+      case "paste":
+        return executeAction({ action: "paste" });
       case "done":
         return executeAction({ action: "done", reason: "Flow complete" });
       default: