feat(tgu-ops-ui): add spacecraft work editor tab

Port the TGU editor prototype into pcp-tgu-ops-ui as a new editor tab, add draft/conflict/pass logic with tests, extend the 2D map picking API, and include editor styles/theme aliases and task/prototype docs.

Validation: npm run test; npm run build in services/pcp-tgu-ops-ui.

services/pcp-tgu-ops-ui/src/model/timelineTypes.ts

@@ -22,6 +22,8 @@ export type TimelineRange = {
   toMs: number;
 };
 
+export type TguActiveTab = "timeline" | "map" | "editor";
+
 export type TimelineRow = {
   spacecraftId: string;
   platform?: TguPlatformUi;