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/math.ts

@@ -33,6 +33,27 @@ export function torusShortestDelta(a: number, b: number, size: number): number {
 	return d + 0;
 }
 
+// torusShortestDistance returns the wrap-aware Euclidean distance
+// between (ax, ay) and (bx, by) on a torus of size width × height.
+// Built on top of `torusShortestDelta` so the two axes share the
+// "shortest signed delta" semantics. Used by the Phase 29 reach
+// filter (hide planets beyond `FlightDistance` of every LOCAL
+// planet); both modes (torus / no-wrap) consume the same metric — in
+// no-wrap mode the wrapped distance is never shorter than the
+// straight-line one because the player cannot fly across the seam.
+export function torusShortestDistance(
+	ax: number,
+	ay: number,
+	bx: number,
+	by: number,
+	width: number,
+	height: number,
+): number {
+	const dx = torusShortestDelta(ax, bx, width);
+	const dy = torusShortestDelta(ay, by, height);
+	return Math.hypot(dx, dy);
+}
+
 // distSqPointToSegment returns the squared distance from point (px,py)
 // to the segment (ax,ay)–(bx,by). For zero-length segments it falls
 // back to point-to-point distance.