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

src/features/flights/mapIcons.ts

@@ -0,0 +1,22 @@
+import L from 'leaflet'
+
+function pinIcon(color: string) {
+  return L.divIcon({
+    className: '',
+    html: `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 384 512" width="24" height="24" fill="${color}"><path d="M384 192c0 87.4-117 243-168.3 307.2a24 24 0 0 1-47.4 0C117 435 0 279.4 0 192 0 86 86 0 192 0s192 86 192 192z"/></svg>`,
+    iconSize: [24, 24],
+    iconAnchor: [12, 24],
+    popupAnchor: [0, -24],
+  })
+}
+
+export const pointIconGreen = pinIcon('#1ed013')
+export const pointIconBlue = pinIcon('#228be6')
+export const pointIconRed = pinIcon('#fa5252')
+
+export const defaultIcon = new L.Icon({
+  iconUrl: 'https://unpkg.com/leaflet@1.7.1/dist/images/marker-icon.png',
+  iconSize: [25, 41],
+  iconAnchor: [12, 41],
+  popupAnchor: [1, -34],
+})