feat(ui): Phase 29 map visibility toggles

Adds the gear-icon popover on the map view with per-game persistence
of every category toggle plus the wrap-mode radio. Hide-by-id and
visibility-fog facilities land on the renderer so every flip applies
within one frame without a Pixi remount; the wrap-mode toggle keeps
its existing remount + camera-preserve path. A new server-side turn
force-resets every flag to defaults so a hidden category never makes
the player miss the next turn's news.

Also fixes the FligthDistance → FlightDistance typo in pkg/calc/race.go
(plus the single Go caller); the TS side keeps duplicating the formula
until a race-level WASM bridge lands.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

ui/frontend/src/map/cargo-routes.ts

@@ -86,18 +86,31 @@ const HEAD_HALF_ANGLE = (25 * Math.PI) / 180;
  * not present in the planet list (e.g. a destination newly
  * unidentified after a turn cutoff). Pure: relies only on the
  * report; no DOM access; no Pixi calls.
+ *
+ * `opts.skipPlanets` (Phase 29) is an optional set of planet numbers
+ * whose routes — outgoing or incoming — should be filtered out so the
+ * arrows do not point at hidden glyphs. Empty / undefined means no
+ * extra filtering, preserving the pre-Phase-29 contract.
  */
-export function buildCargoRouteLines(report: GameReport): LinePrim[] {
+export function buildCargoRouteLines(
+	report: GameReport,
+	opts?: { skipPlanets?: ReadonlySet<number> },
+): LinePrim[] {
 	if (report.routes.length === 0) return [];
+	const skip = opts?.skipPlanets;
 	const planetById = new Map<number, ReportPlanet>();
 	for (const planet of report.planets) {
 		planetById.set(planet.number, planet);
 	}
 	const lines: LinePrim[] = [];
 	for (const route of report.routes) {
+		if (skip !== undefined && skip.has(route.sourcePlanetNumber)) continue;
 		const source = planetById.get(route.sourcePlanetNumber);
 		if (source === undefined) continue;
 		for (const entry of route.entries) {
+			if (skip !== undefined && skip.has(entry.destinationPlanetNumber)) {
+				continue;
+			}
 			const dest = planetById.get(entry.destinationPlanetNumber);
 			if (dest === undefined) continue;
 			const dx = torusShortestDelta(source.x, dest.x, report.mapWidth);