RankoPins Flow Automator v4.3.4

First-prompt initialization fix:
- Added fast WebSocket reconnect loop (about 1 second) when RankoPins local bridge is not ready yet.
- Reconnects on bridge close/error instead of waiting for the ~30 second MV3 alarm.
- Explicit reconnect on browser startup and extension install/update.
- Keeps the 30-second alarm as a service-worker recovery safety net.

Existing v4.3.3 behavior retained:
- No aspect-ratio selector or ratio changes.
- Background Flow generation without Page.bringToFront/window activation.
- Trusted debugger mouse click for Generate.
