feat(flights): integrate mission-planner into Flights page

- Port mission-planner flight planning to main app (Tailwind, react-leaflet v5, react-i18next)
- Add FlightMap with click-to-add waypoints, draggable markers, polyline with arrows
- Add FlightParamsPanel with action modes, waypoint list (drag-reorder), altitude chart, wind, JSON import/export
- Add FlightListSidebar with create/delete and telemetry date
- Add collapsible left panel with quick action mode shortcuts
- Add work area / no-go zone drawing via manual mouse events (L.rectangle)
- Add AltitudeDialog and JsonEditorDialog (Tailwind modals)
- Add battery/time/distance calculations per waypoint segment
- Add satellite/classic map toggle and mini-map on point drag
- Add Camera FOV and Communication Addr fields
- Add current position display under location search
- Merge mission-planner translations under flights.planner.*
- Gitignore .superpowers session data

.gitignore

@@ -1,4 +1,6 @@
 .idea
+.claude
+.superpowers
 
 # dependencies
 /node_modules