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/lib/active-view/map-toggles.svelte

@@ -0,0 +1,320 @@
+<!--
+Phase 29 gear popover. Sits in the top-right corner of the map
+canvas and exposes the per-game visibility / wrap toggles that the
+`GameStateStore` already owns. The component is a thin view of the
+store — every checkbox / radio fires `store.setMapToggle(...)` or
+`store.setWrapMode(...)` and reads back the current state through
+the rune.
+
+Outside-click + Escape close the popover, matching the
+`header/view-menu.svelte` precedent. On mobile (<768 px) the
+surface re-styles into a bottom-sheet positioned above the
+bottom-tabs bar.
+-->
+<script lang="ts">
+	import { onMount } from "svelte";
+	import { i18n } from "$lib/i18n/index.svelte";
+	import type { MapToggles, GameStateStore } from "$lib/game-state.svelte";
+	import type { WrapMode } from "../../map/world";
+
+	type Props = { store: GameStateStore };
+	let { store }: Props = $props();
+
+	let open = $state(false);
+	let rootEl: HTMLDivElement | null = $state(null);
+
+	function toggleOpen(): void {
+		open = !open;
+	}
+
+	function setFlag<K extends keyof MapToggles>(
+		key: K,
+		event: Event & { currentTarget: HTMLInputElement },
+	): void {
+		void store.setMapToggle(key, event.currentTarget.checked as MapToggles[K]);
+	}
+
+	function setWrap(mode: WrapMode): void {
+		void store.setWrapMode(mode);
+	}
+
+	function onKeyDown(event: KeyboardEvent): void {
+		if (event.key === "Escape" && open) {
+			open = false;
+		}
+	}
+
+	onMount(() => {
+		const handleClick = (event: MouseEvent): void => {
+			if (!open || rootEl === null) return;
+			const target = event.target;
+			if (target instanceof Node && rootEl.contains(target)) return;
+			open = false;
+		};
+		document.addEventListener("click", handleClick, true);
+		document.addEventListener("keydown", onKeyDown);
+		return () => {
+			document.removeEventListener("click", handleClick, true);
+			document.removeEventListener("keydown", onKeyDown);
+		};
+	});
+</script>
+
+<div class="map-toggles" bind:this={rootEl}>
+	<button
+		type="button"
+		class="trigger"
+		data-testid="map-toggles-trigger"
+		aria-haspopup="menu"
+		aria-expanded={open}
+		aria-label={open
+			? i18n.t("game.map.toggles.close")
+			: i18n.t("game.map.toggles.open")}
+		onclick={toggleOpen}
+	>
+		<span aria-hidden="true">⚙</span>
+	</button>
+	{#if open}
+		<div class="surface" role="menu" data-testid="map-toggles-surface">
+			<fieldset>
+				<legend>{i18n.t("game.map.toggles.section.objects")}</legend>
+				<label>
+					<input
+						type="checkbox"
+						data-testid="map-toggles-hyperspace-groups"
+						checked={store.mapToggles.hyperspaceGroups}
+						onchange={(e) => setFlag("hyperspaceGroups", e)}
+					/>
+					<span>{i18n.t("game.map.toggles.hyperspace_groups")}</span>
+				</label>
+				<label>
+					<input
+						type="checkbox"
+						data-testid="map-toggles-incoming-groups"
+						checked={store.mapToggles.incomingGroups}
+						onchange={(e) => setFlag("incomingGroups", e)}
+					/>
+					<span>{i18n.t("game.map.toggles.incoming_groups")}</span>
+				</label>
+				<label>
+					<input
+						type="checkbox"
+						data-testid="map-toggles-unidentified-groups"
+						checked={store.mapToggles.unidentifiedGroups}
+						onchange={(e) => setFlag("unidentifiedGroups", e)}
+					/>
+					<span>{i18n.t("game.map.toggles.unidentified_groups")}</span>
+				</label>
+				<label>
+					<input
+						type="checkbox"
+						data-testid="map-toggles-cargo-routes"
+						checked={store.mapToggles.cargoRoutes}
+						onchange={(e) => setFlag("cargoRoutes", e)}
+					/>
+					<span>{i18n.t("game.map.toggles.cargo_routes")}</span>
+				</label>
+				<label>
+					<input
+						type="checkbox"
+						data-testid="map-toggles-battle-markers"
+						checked={store.mapToggles.battleMarkers}
+						onchange={(e) => setFlag("battleMarkers", e)}
+					/>
+					<span>{i18n.t("game.map.toggles.battle_markers")}</span>
+				</label>
+				<label>
+					<input
+						type="checkbox"
+						data-testid="map-toggles-bombing-markers"
+						checked={store.mapToggles.bombingMarkers}
+						onchange={(e) => setFlag("bombingMarkers", e)}
+					/>
+					<span>{i18n.t("game.map.toggles.bombing_markers")}</span>
+				</label>
+			</fieldset>
+			<fieldset>
+				<legend>{i18n.t("game.map.toggles.section.planets")}</legend>
+				<label>
+					<input
+						type="checkbox"
+						data-testid="map-toggles-foreign-planets"
+						checked={store.mapToggles.foreignPlanets}
+						onchange={(e) => setFlag("foreignPlanets", e)}
+					/>
+					<span>{i18n.t("game.map.toggles.foreign_planets")}</span>
+				</label>
+				<label>
+					<input
+						type="checkbox"
+						data-testid="map-toggles-uninhabited-planets"
+						checked={store.mapToggles.uninhabitedPlanets}
+						onchange={(e) => setFlag("uninhabitedPlanets", e)}
+					/>
+					<span>{i18n.t("game.map.toggles.uninhabited_planets")}</span>
+				</label>
+				<label>
+					<input
+						type="checkbox"
+						data-testid="map-toggles-unidentified-planets"
+						checked={store.mapToggles.unidentifiedPlanets}
+						onchange={(e) => setFlag("unidentifiedPlanets", e)}
+					/>
+					<span>{i18n.t("game.map.toggles.unidentified_planets")}</span>
+				</label>
+				<label>
+					<input
+						type="checkbox"
+						data-testid="map-toggles-unreachable-planets"
+						checked={store.mapToggles.unreachablePlanets}
+						onchange={(e) => setFlag("unreachablePlanets", e)}
+					/>
+					<span>{i18n.t("game.map.toggles.unreachable_planets")}</span>
+				</label>
+			</fieldset>
+			<fieldset>
+				<legend>{i18n.t("game.map.toggles.section.view")}</legend>
+				<label>
+					<input
+						type="checkbox"
+						data-testid="map-toggles-visibility-fog"
+						checked={store.mapToggles.visibilityFog}
+						onchange={(e) => setFlag("visibilityFog", e)}
+					/>
+					<span>{i18n.t("game.map.toggles.visibility_fog")}</span>
+				</label>
+				<div class="wrap-row">
+					<span class="wrap-label">{i18n.t("game.map.toggles.wrap.label")}</span>
+					<label class="radio">
+						<input
+							type="radio"
+							name="map-toggles-wrap"
+							data-testid="map-toggles-wrap-torus"
+							value="torus"
+							checked={store.wrapMode === "torus"}
+							onchange={() => setWrap("torus")}
+						/>
+						<span>{i18n.t("game.map.toggles.wrap.torus")}</span>
+					</label>
+					<label class="radio">
+						<input
+							type="radio"
+							name="map-toggles-wrap"
+							data-testid="map-toggles-wrap-no-wrap"
+							value="no-wrap"
+							checked={store.wrapMode === "no-wrap"}
+							onchange={() => setWrap("no-wrap")}
+						/>
+						<span>{i18n.t("game.map.toggles.wrap.no_wrap")}</span>
+					</label>
+				</div>
+			</fieldset>
+		</div>
+	{/if}
+</div>
+
+<style>
+	.map-toggles {
+		position: absolute;
+		top: 0.5rem;
+		right: 0.5rem;
+		z-index: 20;
+	}
+	.trigger {
+		min-width: 44px;
+		min-height: 44px;
+		display: inline-flex;
+		align-items: center;
+		justify-content: center;
+		font: inherit;
+		font-size: 1.4rem;
+		padding: 0.25rem 0.5rem;
+		background: rgba(20, 24, 42, 0.85);
+		color: #e8eaf6;
+		border: 1px solid #2a3150;
+		border-radius: 6px;
+		cursor: pointer;
+	}
+	.trigger:hover {
+		background: #1c2238;
+	}
+	.surface {
+		position: absolute;
+		top: calc(100% + 0.25rem);
+		right: 0;
+		min-width: 16rem;
+		display: flex;
+		flex-direction: column;
+		gap: 0.5rem;
+		background: #14182a;
+		color: #e8eaf6;
+		border: 1px solid #2a3150;
+		border-radius: 6px;
+		box-shadow: 0 6px 18px rgba(0, 0, 0, 0.4);
+		padding: 0.5rem;
+		z-index: 50;
+	}
+	fieldset {
+		border: 0;
+		padding: 0;
+		margin: 0;
+		display: flex;
+		flex-direction: column;
+		gap: 0.25rem;
+	}
+	legend {
+		font-size: 0.75rem;
+		text-transform: uppercase;
+		letter-spacing: 0.05em;
+		color: #aab;
+		padding: 0 0 0.15rem 0;
+	}
+	label {
+		display: flex;
+		align-items: center;
+		gap: 0.45rem;
+		font-size: 0.9rem;
+		padding: 0.2rem 0.25rem;
+		border-radius: 3px;
+		cursor: pointer;
+	}
+	label:hover {
+		background: #1c2238;
+	}
+	input[type="checkbox"],
+	input[type="radio"] {
+		accent-color: #6dd2ff;
+	}
+	.wrap-row {
+		display: flex;
+		flex-wrap: wrap;
+		gap: 0.5rem;
+		align-items: center;
+		font-size: 0.9rem;
+	}
+	.wrap-label {
+		color: #aab;
+		font-size: 0.75rem;
+		text-transform: uppercase;
+		letter-spacing: 0.05em;
+		width: 100%;
+	}
+	.radio {
+		padding: 0.15rem 0.4rem;
+	}
+	@media (max-width: 767.98px) {
+		.surface {
+			position: fixed;
+			top: auto;
+			right: 0;
+			left: 0;
+			bottom: 3.25rem;
+			max-height: calc(100vh - 6rem);
+			overflow-y: auto;
+			border-radius: 0;
+			border-left: 0;
+			border-right: 0;
+			box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.4);
+		}
+	}
+</style>

ui/frontend/src/lib/active-view/map.svelte

@@ -31,7 +31,17 @@ preference the store already manages.
 	} from "../../map/index";
 	import { buildCargoRouteLines } from "../../map/cargo-routes";
 	import { buildPendingSendLines } from "../../map/pending-send-routes";
-	import { reportToWorld, type HitTarget } from "../../map/state-binding";
+	import {
+		reportToWorld,
+		type HitTarget,
+		type MapCategory,
+	} from "../../map/state-binding";
+	import {
+		computeFogCircles,
+		computeHiddenIds,
+		computeHiddenPlanetNumbers,
+		fingerprintHiddenPlanets,
+	} from "../../map/visibility";
 	import type { PrimitiveID } from "../../map/world";
 	import {
 		ORDER_DRAFT_CONTEXT_KEY,
@@ -41,6 +51,7 @@ preference the store already manages.
 	import {
 		GAME_STATE_CONTEXT_KEY,
 		type GameStateStore,
+		type MapToggles,
 	} from "$lib/game-state.svelte";
 	import {
 		SELECTION_CONTEXT_KEY,
@@ -57,12 +68,15 @@ preference the store already manages.
 	import {
 		installRendererDebugSurface,
 		registerMapCameraProvider,
+		registerMapFogProvider,
 		registerMapPickStateProvider,
 		registerMapPrimitivesProvider,
 		type MapCameraSnapshot,
+		type MapFogSnapshot,
 		type MapPickStateSnapshot,
 		type MapPrimitiveSnapshot,
 	} from "$lib/debug-surface.svelte";
+	import MapTogglesControl from "./map-toggles.svelte";
 
 	const store = getContext<GameStateStore | undefined>(GAME_STATE_CONTEXT_KEY);
 	const renderedReport = getContext<RenderedReportSource | undefined>(
@@ -92,6 +106,26 @@ preference the store already manages.
 
 	let handle: RendererHandle | null = null;
 	let hitLookup = new Map<PrimitiveID, HitTarget>();
+	// currentCategories / currentPlanetDependents are populated by
+	// `reportToWorld` inside `mountRenderer` and consumed by the
+	// Phase 29 hide-set computation on every effect re-run (mount or
+	// toggle change). Both maps cover the base world; extras
+	// (cargo-routes, pending-Send) are gated upstream via
+	// `skipPlanets`, so they never need a categories entry.
+	let currentCategories: ReadonlyMap<PrimitiveID, MapCategory> = new Map();
+	let currentPlanetDependents: ReadonlyMap<
+		number,
+		ReadonlySet<PrimitiveID>
+	> = new Map();
+	// currentFogCircles mirrors the latest `setVisibilityFog` input so
+	// the debug surface can report it to Playwright. The renderer
+	// keeps the Graphics, not the data; recomputing on every read
+	// would duplicate work.
+	let currentFogCircles: ReadonlyArray<{
+		x: number;
+		y: number;
+		radius: number;
+	}> = [];
 	let mountedTurn: number | null = null;
 	let mountedGameId: string | null = null;
 	let onResize: (() => void) | null = null;
@@ -134,9 +168,23 @@ preference the store already manages.
 		// Track the wrap mode so the renderer remounts when Phase 29's
 		// toggle UI flips it; the read here also subscribes the effect.
 		const mode = store?.wrapMode ?? "torus";
+		// Track the Phase 29 visibility toggles so the effect re-runs
+		// when the gear popover flips any flag. The hide set + fog +
+		// extras filter all derive from this rune.
+		const toggles = store?.mapToggles;
 		const gameId = store?.gameId ?? "";
 		if (!mounted || canvasEl === null || containerEl === null) return;
-		if (status !== "ready" || !report) return;
+		if (status !== "ready" || !report || toggles === undefined) return;
+
+		// Phase 29 visibility derivation. Cargo routes and pending-
+		// Send overlay are extras (no Pixi remount on flip); the
+		// cascade-filtering happens here so the extras list shrinks
+		// when a destination planet hides. The hide set + fog are
+		// applied after mount / on every toggle change without a
+		// remount.
+		const hiddenPlanetNumbers = computeHiddenPlanetNumbers(report, toggles);
+		const hiddenPlanetFingerprint =
+			fingerprintHiddenPlanets(hiddenPlanetNumbers);
 
 		// Cargo-route arrows and pending-Send tracks are pushed onto
 		// the live renderer via `setExtraPrimitives` so the overlay
@@ -146,10 +194,13 @@ preference the store already manages.
 		// rebuilds when the overlay computation re-runs but the
 		// routes / pending-Send content is unchanged (e.g. status
 		// transitions valid → submitting → applied for the same
-		// command).
+		// command). The Phase 29 cascade + cargoRoutes toggle are
+		// folded into the fingerprint so a toggle flip that changes
+		// the visible set reliably triggers a push.
 		const draftCommands = orderDraft?.commands ?? [];
 		const draftStatuses = orderDraft?.statuses ?? {};
 		const extrasFingerprint =
+			`cr=${toggles.cargoRoutes ? "1" : "0"}|hp=${hiddenPlanetFingerprint}|` +
 			computeRoutesFingerprint(report.routes) +
 			"|" +
 			computePendingSendFingerprint(draftCommands, draftStatuses);
@@ -160,12 +211,24 @@ preference the store already manages.
 			handle !== null &&
 			handle.getMode() === mode;
 		if (sameSnapshot) {
+			// Always re-apply hide set + fog on a same-snapshot pass:
+			// toggle flips bypass the extras fingerprint when they
+			// only change which baked-world primitives are hidden,
+			// and a no-op `setHiddenPrimitiveIds` is cheap.
+			untrack(() => {
+				applyVisibilityState(report, toggles, hiddenPlanetNumbers);
+			});
 			if (lastExtrasFingerprint !== extrasFingerprint) {
 				untrack(() => {
-					handle?.setExtraPrimitives([
-						...buildCargoRouteLines(report),
-						...buildPendingSendLines(report, draftCommands, draftStatuses),
-					]);
+					handle?.setExtraPrimitives(
+						buildExtras(
+							report,
+							draftCommands,
+							draftStatuses,
+							toggles,
+							hiddenPlanetNumbers,
+						),
+					);
 				});
 				lastExtrasFingerprint = extrasFingerprint;
 			}
@@ -179,18 +242,80 @@ preference the store already manages.
 		void pendingMountSignal;
 		if (mountInProgress) return;
 		untrack(() => {
-			void runSerializedMount(report, mode, extrasFingerprint);
+			void runSerializedMount(
+				report,
+				mode,
+				toggles,
+				hiddenPlanetNumbers,
+				extrasFingerprint,
+				draftCommands,
+				draftStatuses,
+			);
 		});
 	});
 
+	function buildExtras(
+		report: NonNullable<GameStateStore["report"]>,
+		draftCommands: readonly OrderCommand[],
+		draftStatuses: Readonly<Record<string, string>>,
+		toggles: MapToggles,
+		hiddenPlanetNumbers: ReadonlySet<number>,
+	): import("../../map/world").Primitive[] {
+		const skip = hiddenPlanetNumbers.size > 0 ? hiddenPlanetNumbers : undefined;
+		const cargo = toggles.cargoRoutes
+			? buildCargoRouteLines(report, skip ? { skipPlanets: skip } : undefined)
+			: [];
+		const pending = buildPendingSendLines(
+			report,
+			draftCommands,
+			draftStatuses,
+			skip ? { skipPlanets: skip } : undefined,
+		);
+		return [...cargo, ...pending];
+	}
+
+	function applyVisibilityState(
+		report: NonNullable<GameStateStore["report"]>,
+		toggles: MapToggles,
+		hiddenPlanetNumbers: ReadonlySet<number>,
+	): void {
+		if (handle === null) return;
+		const hiddenIds = computeHiddenIds(
+			currentCategories,
+			currentPlanetDependents,
+			hiddenPlanetNumbers,
+			toggles,
+		);
+		handle.setHiddenPrimitiveIds(hiddenIds);
+		const fogCircles = computeFogCircles(report, toggles);
+		currentFogCircles = fogCircles;
+		handle.setVisibilityFog(fogCircles);
+	}
+
 	async function runSerializedMount(
 		report: NonNullable<GameStateStore["report"]>,
 		mode: "torus" | "no-wrap",
-		routesFingerprint: string,
+		toggles: MapToggles,
+		hiddenPlanetNumbers: ReadonlySet<number>,
+		extrasFingerprint: string,
+		draftCommands: readonly OrderCommand[],
+		draftStatuses: Readonly<Record<string, string>>,
 	): Promise<void> {
 		mountInProgress = true;
 		try {
-			await mountRenderer(report, mode, routesFingerprint);
+			await mountRenderer(report, mode);
+			if (handle === null) return;
+			applyVisibilityState(report, toggles, hiddenPlanetNumbers);
+			handle.setExtraPrimitives(
+				buildExtras(
+					report,
+					draftCommands,
+					draftStatuses,
+					toggles,
+					hiddenPlanetNumbers,
+				),
+			);
+			lastExtrasFingerprint = extrasFingerprint;
 		} finally {
 			mountInProgress = false;
 			// Bump the reactive signal so any dep change observed
@@ -230,7 +355,6 @@ preference the store already manages.
 	async function mountRenderer(
 		report: NonNullable<GameStateStore["report"]>,
 		mode: "torus" | "no-wrap",
-		routesFingerprint: string,
 	): Promise<void> {
 		if (canvasEl === null || containerEl === null) return;
 		// Capture camera state before disposing so a remount inside
@@ -262,8 +386,15 @@ preference the store already manages.
 			handle = null;
 		}
 		try {
-			const { world, hitLookup: nextHitLookup } = reportToWorld(report);
+			const {
+				world,
+				hitLookup: nextHitLookup,
+				categories,
+				planetDependents,
+			} = reportToWorld(report);
 			hitLookup = nextHitLookup;
+			currentCategories = categories;
+			currentPlanetDependents = planetDependents;
 			handle = await createRenderer({
 				canvas: canvasEl,
 				world,
@@ -328,6 +459,7 @@ preference the store already manages.
 					strokeColor: p.style.strokeColor ?? null,
 					x: p.kind === "point" ? p.x : null,
 					y: p.kind === "point" ? p.y : null,
+					visible: !h.isPrimitiveHidden(p.id),
 				}));
 			});
 			const detachPick = registerMapPickStateProvider(() => {
@@ -370,20 +502,25 @@ preference the store already manages.
 					},
 				} satisfies MapCameraSnapshot;
 			});
+			const detachFog = registerMapFogProvider(() => ({
+				circles: currentFogCircles.map((c) => ({ ...c })),
+			}) satisfies MapFogSnapshot);
 			detachDebugProviders = (): void => {
 				detachPrim();
 				detachPick();
 				detachCamera();
+				detachFog();
 			};
 			mountedTurn = report.turn;
 			mountedGameId = targetGameId;
-			// Initial mount carries no extras yet; the post-mount
-			// effect run pushes the current cargo-route lines via
-			// `setExtraPrimitives` once `lastExtrasFingerprint`
-			// disagrees with the freshly computed fingerprint.
+			// runSerializedMount immediately pushes the visibility
+			// state + extras after this resolves; clearing the
+			// fingerprint here is defensive in case the post-mount
+			// path is ever bypassed (e.g. mount-then-throw before the
+			// extras push). The hide set / fog are applied by the
+			// caller too, so we do not call them here.
 			lastExtrasFingerprint = null;
 			mountError = null;
-			void routesFingerprint;
 		} catch (err) {
 			mountError = err instanceof Error ? err.message : String(err);
 		}
@@ -503,6 +640,9 @@ preference the store already manages.
 		bind:this={containerEl}
 	>
 		<canvas bind:this={canvasEl}></canvas>
+		{#if store !== undefined && store.status === "ready"}
+			<MapTogglesControl {store} />
+		{/if}
 	</div>
 </section>
 

ui/frontend/src/lib/debug-surface.svelte.ts

@@ -29,6 +29,25 @@ export interface MapPrimitiveSnapshot {
 	readonly strokeColor: number | null;
 	readonly x: number | null;
 	readonly y: number | null;
+	/**
+	 * visible mirrors the renderer's per-id visibility flag — `false`
+	 * iff `RendererHandle.setHiddenPrimitiveIds` has put the id into
+	 * the hide set. Phase 29 e2e specs use this to assert toggle and
+	 * planet-cascade behaviour without poking at Pixi internals.
+	 */
+	readonly visible: boolean;
+}
+
+/** Snapshot returned by `getMapFog()` — the current Phase 29
+ * visibility-fog input as the renderer last received it. The array
+ * is empty when the fog toggle is off (or when `localPlayerDrive`
+ * is zero so the radius would be zero). */
+export interface MapFogSnapshot {
+	readonly circles: ReadonlyArray<{
+		readonly x: number;
+		readonly y: number;
+		readonly radius: number;
+	}>;
 }
 
 /** Snapshot returned by `getMapCamera()`. Mirrors the renderer's
@@ -53,10 +72,12 @@ export interface MapPickStateSnapshot {
 type PrimitivesProvider = () => readonly MapPrimitiveSnapshot[];
 type PickStateProvider = () => MapPickStateSnapshot;
 type CameraProvider = () => MapCameraSnapshot | null;
+type FogProvider = () => MapFogSnapshot;
 
 let primitivesProvider: PrimitivesProvider | null = null;
 let pickStateProvider: PickStateProvider | null = null;
 let cameraProvider: CameraProvider | null = null;
+let fogProvider: FogProvider | null = null;
 
 /**
  * registerMapPrimitivesProvider attaches a provider that yields the
@@ -101,6 +122,18 @@ export function registerMapCameraProvider(
 	};
 }
 
+/**
+ * registerMapFogProvider attaches a provider that yields the current
+ * Phase 29 fog input as last seen by the renderer. Same idempotent
+ * semantics as the other providers.
+ */
+export function registerMapFogProvider(provider: FogProvider): () => void {
+	fogProvider = provider;
+	return () => {
+		if (fogProvider === provider) fogProvider = null;
+	};
+}
+
 const EMPTY_PICK_STATE: MapPickStateSnapshot = {
 	active: false,
 	sourcePlanetNumber: null,
@@ -126,11 +159,19 @@ export function getMapCamera(): MapCameraSnapshot | null {
 	return cameraProvider?.() ?? null;
 }
 
+/** Pulls the current visibility-fog snapshot. Returns an empty
+ * snapshot when no provider is registered (e.g. map view not
+ * mounted). */
+export function getMapFog(): MapFogSnapshot {
+	return fogProvider?.() ?? { circles: [] };
+}
+
 interface RendererDebugWindow {
 	__galaxyDebug?: {
 		getMapPrimitives?: () => readonly MapPrimitiveSnapshot[];
 		getMapPickState?: () => MapPickStateSnapshot;
 		getMapCamera?: () => MapCameraSnapshot | null;
+		getMapFog?: () => MapFogSnapshot;
 		[key: string]: unknown;
 	};
 }
@@ -153,6 +194,7 @@ export function installRendererDebugSurface(): () => void {
 		getMapPrimitives,
 		getMapPickState,
 		getMapCamera,
+		getMapFog,
 	};
 	win.__galaxyDebug = surface;
 	return (): void => {
@@ -170,5 +212,8 @@ export function installRendererDebugSurface(): () => void {
 		if (current.getMapCamera === getMapCamera) {
 			delete current.getMapCamera;
 		}
+		if (current.getMapFog === getMapFog) {
+			delete current.getMapFog;
+		}
 	};
 }

ui/frontend/src/lib/game-state.svelte.ts

@@ -31,6 +31,54 @@ const HISTORY_NAMESPACE = "game-history";
 const HISTORY_KEY_TURN = (gameId: string, turn: number) =>
 	`${gameId}/turn/${turn}`;
 
+const MAP_TOGGLES_NAMESPACE = "game-map-toggles";
+
+/**
+ * MapToggles is the per-game visibility state exposed by the Phase 29
+ * gear popover. Every flip persists into `Cache` under
+ * `MAP_TOGGLES_NAMESPACE/<gameId>` so the next visit to the game keeps
+ * the user's choices; a new server-side turn force-resets the blob to
+ * `DEFAULT_MAP_TOGGLES` so a hidden category never makes the player
+ * miss what changed (see `GameStateStore.setGame` and
+ * `advanceToPending`).
+ *
+ * Categories with no per-toggle entry are always visible: `local`
+ * planets, in-orbit / on-planet ship groups (rendered by the planet
+ * inspector, never on the map), and the pending-Send overlay.
+ */
+export interface MapToggles {
+	hyperspaceGroups: boolean;
+	incomingGroups: boolean;
+	unidentifiedGroups: boolean;
+	foreignPlanets: boolean;
+	uninhabitedPlanets: boolean;
+	unidentifiedPlanets: boolean;
+	unreachablePlanets: boolean;
+	cargoRoutes: boolean;
+	battleMarkers: boolean;
+	bombingMarkers: boolean;
+	visibilityFog: boolean;
+}
+
+export const DEFAULT_MAP_TOGGLES: MapToggles = {
+	hyperspaceGroups: true,
+	incomingGroups: true,
+	unidentifiedGroups: true,
+	foreignPlanets: true,
+	uninhabitedPlanets: true,
+	unidentifiedPlanets: true,
+	unreachablePlanets: true,
+	cargoRoutes: true,
+	battleMarkers: true,
+	bombingMarkers: true,
+	visibilityFog: true,
+};
+
+interface PersistedMapToggles {
+	readonly toggles: MapToggles;
+	readonly lastResetTurn: number;
+}
+
 /**
  * GAME_STATE_CONTEXT_KEY is the Svelte context key the in-game shell
  * layout uses to expose its `GameStateStore` instance to descendants.
@@ -53,6 +101,15 @@ export class GameStateStore {
 	status: Status = $state("idle");
 	report: GameReport | null = $state(null);
 	wrapMode: WrapMode = $state("torus");
+	/**
+	 * mapToggles is the per-game visibility state surfaced by the
+	 * Phase 29 gear popover. Every value defaults to `true` except for
+	 * the negative `unreachablePlanets` flag (which is also `true` so
+	 * the default view shows every reachable planet). The map view
+	 * resolves the flags into a hide-by-id set on every effect run via
+	 * `RendererHandle.setHiddenPrimitiveIds`.
+	 */
+	mapToggles: MapToggles = $state({ ...DEFAULT_MAP_TOGGLES });
 	error: string | null = $state(null);
 	/**
 	 * currentTurn mirrors the engine's turn number for the running
@@ -109,6 +166,13 @@ export class GameStateStore {
 	private cache: Cache | null = null;
 	private destroyed = false;
 	private visibilityListener: (() => void) | null = null;
+	/**
+	 * lastResetTurn is the turn at which `mapToggles` was last reset to
+	 * defaults. Persisted alongside the toggle blob so the new-turn
+	 * reset path can compare against `currentTurn` after a cross-
+	 * session gap (browser closed at turn N, reopened at turn N + k).
+	 */
+	private lastResetTurn = 0;
 
 	/**
 	 * init kicks off the per-game lifecycle. The call is idempotent on
@@ -151,6 +215,7 @@ export class GameStateStore {
 
 		this.wrapMode = await readWrapMode(this.cache, gameId);
 		const lastViewed = await readLastViewedTurn(this.cache, gameId);
+		const persistedToggles = await readMapToggles(this.cache, gameId);
 
 		try {
 			const summary = await this.findGame(gameId);
@@ -161,6 +226,26 @@ export class GameStateStore {
 			}
 			this.gameName = summary.gameName;
 			this.currentTurn = summary.currentTurn;
+			// New-turn reset: if the persisted blob is older than the
+			// server-side `currentTurn`, drop user overrides and write
+			// the fresh `{defaults, currentTurn}` back to cache so a
+			// subsequent reload sees the same baseline. The cross-
+			// session gap counts here too — a player who closed the
+			// tab at turn N and returns at turn N + k still gets the
+			// defaults on first map mount.
+			if (persistedToggles.lastResetTurn < summary.currentTurn) {
+				this.mapToggles = { ...DEFAULT_MAP_TOGGLES };
+				this.lastResetTurn = summary.currentTurn;
+				await writeMapToggles(
+					this.cache,
+					gameId,
+					this.mapToggles,
+					this.lastResetTurn,
+				);
+			} else {
+				this.mapToggles = { ...persistedToggles.toggles };
+				this.lastResetTurn = persistedToggles.lastResetTurn;
+			}
 			// If the persisted last-viewed turn is older than the
 			// server-side current turn, open the user on their last-seen
 			// snapshot and surface the gap through `pendingTurn` so the
@@ -225,6 +310,13 @@ export class GameStateStore {
 			this.currentTurn = summary.currentTurn;
 			await this.loadTurn(summary.currentTurn, { isCurrent: true });
 			this.pendingTurn = null;
+			// Phase 29: a successful jump onto the new server turn
+			// drops user-set map-visibility overrides so the next
+			// frame surfaces every category. `viewTurn` is the
+			// history-mode path and intentionally leaves toggles
+			// alone — the single shared state stays put across
+			// in-game time-travel.
+			await this.resetMapTogglesForTurn(summary.currentTurn);
 		} catch (err) {
 			if (this.destroyed) return;
 			this.status = "error";
@@ -298,6 +390,40 @@ export class GameStateStore {
 		}
 	}
 
+	/**
+	 * setMapToggle flips one entry of the `mapToggles` rune and
+	 * persists the whole blob (alongside the unchanged
+	 * `lastResetTurn`). Mutating the rune in place keeps subscribers
+	 * reactive without requiring object identity changes.
+	 */
+	async setMapToggle<K extends keyof MapToggles>(
+		key: K,
+		value: MapToggles[K],
+	): Promise<void> {
+		this.mapToggles[key] = value;
+		if (this.cache !== null) {
+			await writeMapToggles(
+				this.cache,
+				this.gameId,
+				this.mapToggles,
+				this.lastResetTurn,
+			);
+		}
+	}
+
+	private async resetMapTogglesForTurn(turn: number): Promise<void> {
+		this.mapToggles = { ...DEFAULT_MAP_TOGGLES };
+		this.lastResetTurn = turn;
+		if (this.cache !== null) {
+			await writeMapToggles(
+				this.cache,
+				this.gameId,
+				this.mapToggles,
+				this.lastResetTurn,
+			);
+		}
+	}
+
 	/**
 	 * failBootstrap is used by the layout to surface errors that
 	 * happen *before* `init` could be reached (missing keypair, missing
@@ -329,6 +455,25 @@ export class GameStateStore {
 		this.gameName = "Synthetic";
 		this.error = null;
 		this.wrapMode = await readWrapMode(opts.cache, opts.gameId);
+		// Synthetic sessions skip the lobby query, so the new-turn
+		// reset check uses the report's own turn as the reference. A
+		// reload on the same synthetic id restores user overrides;
+		// switching to a synthetic report with a higher turn resets
+		// them.
+		const persistedToggles = await readMapToggles(opts.cache, opts.gameId);
+		if (persistedToggles.lastResetTurn < opts.report.turn) {
+			this.mapToggles = { ...DEFAULT_MAP_TOGGLES };
+			this.lastResetTurn = opts.report.turn;
+			await writeMapToggles(
+				opts.cache,
+				opts.gameId,
+				this.mapToggles,
+				this.lastResetTurn,
+			);
+		} else {
+			this.mapToggles = { ...persistedToggles.toggles };
+			this.lastResetTurn = persistedToggles.lastResetTurn;
+		}
 		this.report = opts.report;
 		this.currentTurn = opts.report.turn;
 		this.viewedTurn = opts.report.turn;
@@ -422,6 +567,59 @@ async function readWrapMode(cache: Cache, gameId: string): Promise<WrapMode> {
 	return "torus";
 }
 
+/**
+ * readMapToggles loads the persisted `{toggles, lastResetTurn}` blob.
+ * Missing entries (cleared site data, fresh game) return the defaults
+ * with `lastResetTurn === -1`, guaranteeing the `setGame` reset path
+ * runs on the very first visit. Per-field fallback to defaults keeps
+ * forward-compat with future toggle additions: an older blob
+ * persisted before a new flag landed loses nothing but the missing
+ * flag, which gets the default value.
+ */
+async function readMapToggles(
+	cache: Cache,
+	gameId: string,
+): Promise<PersistedMapToggles> {
+	const stored = await cache.get<Partial<PersistedMapToggles>>(
+		MAP_TOGGLES_NAMESPACE,
+		gameId,
+	);
+	if (stored === undefined || stored === null || typeof stored !== "object") {
+		return { toggles: { ...DEFAULT_MAP_TOGGLES }, lastResetTurn: -1 };
+	}
+	const partial =
+		stored.toggles !== undefined &&
+		stored.toggles !== null &&
+		typeof stored.toggles === "object"
+			? stored.toggles
+			: {};
+	const toggles: MapToggles = { ...DEFAULT_MAP_TOGGLES };
+	for (const k of Object.keys(DEFAULT_MAP_TOGGLES) as (keyof MapToggles)[]) {
+		const candidate = (partial as Partial<MapToggles>)[k];
+		if (typeof candidate === "boolean") {
+			toggles[k] = candidate;
+		}
+	}
+	const turn =
+		typeof stored.lastResetTurn === "number" &&
+		Number.isFinite(stored.lastResetTurn)
+			? stored.lastResetTurn
+			: -1;
+	return { toggles, lastResetTurn: turn };
+}
+
+async function writeMapToggles(
+	cache: Cache,
+	gameId: string,
+	toggles: MapToggles,
+	lastResetTurn: number,
+): Promise<void> {
+	await cache.put<PersistedMapToggles>(MAP_TOGGLES_NAMESPACE, gameId, {
+		toggles: { ...toggles },
+		lastResetTurn,
+	});
+}
+
 async function readLastViewedTurn(
 	cache: Cache,
 	gameId: string,

ui/frontend/src/lib/i18n/locales/en.ts

@@ -113,6 +113,25 @@ const en = {
 	"game.shell.history.return_to_current": "Return to current turn",
 	"game.shell.history.current_badge": "current",
 	"game.view.map": "map",
+	"game.map.toggles.open": "open map visibility menu",
+	"game.map.toggles.close": "close map visibility menu",
+	"game.map.toggles.section.objects": "Objects",
+	"game.map.toggles.section.planets": "Planets",
+	"game.map.toggles.section.view": "View",
+	"game.map.toggles.hyperspace_groups": "hyperspace groups",
+	"game.map.toggles.incoming_groups": "incoming groups",
+	"game.map.toggles.unidentified_groups": "unidentified groups",
+	"game.map.toggles.cargo_routes": "cargo routes",
+	"game.map.toggles.battle_markers": "battle markers",
+	"game.map.toggles.bombing_markers": "bombing markers",
+	"game.map.toggles.foreign_planets": "foreign planets",
+	"game.map.toggles.uninhabited_planets": "uninhabited planets",
+	"game.map.toggles.unidentified_planets": "unidentified planets",
+	"game.map.toggles.unreachable_planets": "show unreachable planets",
+	"game.map.toggles.visibility_fog": "visibility fog",
+	"game.map.toggles.wrap.label": "wrap scrolling",
+	"game.map.toggles.wrap.torus": "torus",
+	"game.map.toggles.wrap.no_wrap": "no-wrap",
 	"game.view.table": "table",
 	"game.view.table.planets": "planets",
 	"game.view.table.ship_classes": "ship classes",

ui/frontend/src/lib/i18n/locales/ru.ts

@@ -114,6 +114,25 @@ const ru: Record<keyof typeof en, string> = {
 	"game.shell.history.return_to_current": "Вернуться к текущему ходу",
 	"game.shell.history.current_badge": "текущий",
 	"game.view.map": "карта",
+	"game.map.toggles.open": "открыть меню видимости карты",
+	"game.map.toggles.close": "закрыть меню видимости карты",
+	"game.map.toggles.section.objects": "Объекты",
+	"game.map.toggles.section.planets": "Планеты",
+	"game.map.toggles.section.view": "Вид",
+	"game.map.toggles.hyperspace_groups": "группы в гиперпространстве",
+	"game.map.toggles.incoming_groups": "входящие группы",
+	"game.map.toggles.unidentified_groups": "неопознанные группы",
+	"game.map.toggles.cargo_routes": "грузовые маршруты",
+	"game.map.toggles.battle_markers": "метки сражений",
+	"game.map.toggles.bombing_markers": "метки бомбардировок",
+	"game.map.toggles.foreign_planets": "чужие планеты",
+	"game.map.toggles.uninhabited_planets": "необитаемые планеты",
+	"game.map.toggles.unidentified_planets": "неопознанные планеты",
+	"game.map.toggles.unreachable_planets": "показывать недостижимые планеты",
+	"game.map.toggles.visibility_fog": "туман видимости",
+	"game.map.toggles.wrap.label": "перенос карты",
+	"game.map.toggles.wrap.torus": "тор",
+	"game.map.toggles.wrap.no_wrap": "без переноса",
 	"game.view.table": "таблица",
 	"game.view.table.planets": "планеты",
 	"game.view.table.ship_classes": "классы кораблей",

ui/frontend/src/map/battle-markers.ts

@@ -60,9 +60,26 @@ export interface BombingMarkerTarget {
 
 export type MarkerTarget = BattleMarkerTarget | BombingMarkerTarget;
 
+/**
+ * MarkerCategory tags every emitted primitive with the toggleable
+ * surface it belongs to so the Phase 29 hide-set machinery can flip
+ * each independently. Battles and bombings have their own toggles —
+ * a player can hide the bombing rings while keeping the battle
+ * crosses visible.
+ */
+export type MarkerCategory = "battleMarker" | "bombingMarker";
+
 export interface BuildMarkersResult {
 	primitives: Primitive[];
 	lookup: Map<PrimitiveID, MarkerTarget>;
+	categories: Map<PrimitiveID, MarkerCategory>;
+	/**
+	 * planetDependents maps the anchor planet number to the ids of
+	 * markers drawn on it; the Phase 29 cascade hides the markers
+	 * together with the planet when the planet itself is filtered out
+	 * (kind toggle off or unreachable filter on).
+	 */
+	planetDependents: Map<number, Set<PrimitiveID>>;
 }
 
 /**
@@ -93,6 +110,16 @@ export function buildBattleAndBombingMarkers(
 
 	const primitives: Primitive[] = [];
 	const lookup = new Map<PrimitiveID, MarkerTarget>();
+	const categories = new Map<PrimitiveID, MarkerCategory>();
+	const planetDependents = new Map<number, Set<PrimitiveID>>();
+	const addDependent = (planetNumber: number, id: PrimitiveID): void => {
+		let set = planetDependents.get(planetNumber);
+		if (set === undefined) {
+			set = new Set();
+			planetDependents.set(planetNumber, set);
+		}
+		set.add(id);
+	};
 
 	for (let i = 0; i < report.battles.length; i++) {
 		const battle = report.battles[i];
@@ -135,6 +162,10 @@ export function buildBattleAndBombingMarkers(
 		primitives.push(lineA, lineB);
 		lookup.set(lineA.id, target);
 		lookup.set(lineB.id, target);
+		categories.set(lineA.id, "battleMarker");
+		categories.set(lineB.id, "battleMarker");
+		addDependent(battle.planet, lineA.id);
+		addDependent(battle.planet, lineB.id);
 	}
 
 	for (let i = 0; i < report.bombings.length; i++) {
@@ -162,7 +193,9 @@ export function buildBattleAndBombingMarkers(
 		};
 		primitives.push(ring);
 		lookup.set(id, { kind: "bombing", planet: bombing.planetNumber });
+		categories.set(id, "bombingMarker");
+		addDependent(bombing.planetNumber, id);
 	}
 
-	return { primitives, lookup };
+	return { primitives, lookup, categories, planetDependents };
 }

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);

ui/frontend/src/map/hit-test.ts

@@ -21,6 +21,7 @@ import {
 	type LinePrim,
 	type PointPrim,
 	type Primitive,
+	type PrimitiveID,
 	type Viewport,
 	type World,
 	type WrapMode,
@@ -33,17 +34,25 @@ export interface Hit {
 
 // hitTest returns the best-matching primitive under the cursor, or
 // null if no primitive matches within its hit slop.
+//
+// `hiddenIds` (optional) is consulted before every primitive — ids in
+// the set are skipped entirely, so a click on the area they used to
+// cover falls through to the next visible primitive. The renderer's
+// Phase 29 hide-by-id facility threads its current set in here so
+// the click / hover paths stay in lock-step with the visible scene.
 export function hitTest(
 	world: World,
 	camera: Camera,
 	viewport: Viewport,
 	cursorPx: { x: number; y: number },
 	mode: WrapMode,
+	hiddenIds?: ReadonlySet<PrimitiveID>,
 ): Hit | null {
 	const cursor = screenToWorld(cursorPx, camera, viewport);
 	const candidates: Hit[] = [];
 
 	for (const p of world.primitives) {
+		if (hiddenIds !== undefined && hiddenIds.has(p.id)) continue;
 		const slopPx = p.hitSlopPx > 0 ? p.hitSlopPx : DEFAULT_HIT_SLOP_PX[p.kind];
 		const slopWorld = slopPx / camera.scale;
 		let result: number | null;

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.

ui/frontend/src/map/pending-send-routes.ts

@@ -55,8 +55,10 @@ export function buildPendingSendLines(
 	report: GameReport,
 	commands: readonly OrderCommand[],
 	statuses: Readonly<Record<string, string>>,
+	opts?: { skipPlanets?: ReadonlySet<number> },
 ): LinePrim[] {
 	if (commands.length === 0) return [];
+	const skip = opts?.skipPlanets;
 	const planetById = new Map<number, ReportPlanet>();
 	for (const planet of report.planets) {
 		planetById.set(planet.number, planet);
@@ -79,6 +81,8 @@ export function buildPendingSendLines(
 		// origin / range to live coordinates and the in-space track
 		// renders instead.
 		if (group.origin !== null || group.range !== null) continue;
+		if (skip !== undefined && skip.has(group.destination)) continue;
+		if (skip !== undefined && skip.has(cmd.destinationPlanetNumber)) continue;
 		const source = planetById.get(group.destination);
 		const destination = planetById.get(cmd.destinationPlanetNumber);
 		if (source === undefined || destination === undefined) continue;

ui/frontend/src/map/render.ts

@@ -155,6 +155,36 @@ export interface RendererHandle {
 	 * for unknown ids.
 	 */
 	getPrimitiveAlpha(id: PrimitiveID): number;
+	/**
+	 * setHiddenPrimitiveIds replaces the set of primitives the
+	 * renderer should hide. Hidden primitives have their per-copy
+	 * `Graphics.visible` flipped to `false` and are skipped by
+	 * `hitAt`, so a click on the area they used to cover falls
+	 * through to the next primitive. Empty input clears the hide
+	 * set. Called every effect run by the Phase 29 map view to
+	 * materialise the `MapToggles` flags + planet-cascade rule
+	 * without a Pixi remount.
+	 */
+	setHiddenPrimitiveIds(ids: ReadonlySet<PrimitiveID>): void;
+	/**
+	 * isPrimitiveHidden reports whether the supplied primitive id is
+	 * in the current hide set. Used by the debug surface so e2e
+	 * specs can assert toggle behaviour without poking at Pixi
+	 * internals.
+	 */
+	isPrimitiveHidden(id: PrimitiveID): boolean;
+	/**
+	 * setVisibilityFog draws (or removes) the Phase 29 visibility
+	 * fog overlay. Each entry describes a circle around a LOCAL
+	 * planet that the player has scanner / visibility coverage on;
+	 * the overlay fills the world rectangle with a slightly lighter
+	 * fog colour and "punches" each circle out, leaving the
+	 * intelligence-covered area in the regular background. Empty
+	 * input destroys the existing fog Graphics.
+	 */
+	setVisibilityFog(
+		circles: ReadonlyArray<{ x: number; y: number; radius: number }>,
+	): void;
 	resize(widthPx: number, heightPx: number): void;
 	dispose(): void;
 }
@@ -173,6 +203,18 @@ const TORUS_OFFSETS: ReadonlyArray<readonly [number, number]> = [
 
 const ORIGIN_COPY_INDEX = 4; // (0, 0) entry of TORUS_OFFSETS
 
+// EMPTY_HIDDEN_IDS is the default state of the Phase 29 hide set
+// (no primitive is hidden). Shared by every renderer instance so a
+// frequent `setHiddenPrimitiveIds(EMPTY_HIDDEN_IDS)` call from the
+// debug surface stays allocation-free.
+const EMPTY_HIDDEN_IDS: ReadonlySet<PrimitiveID> = new Set();
+
+// FOG_COLOR is the Phase 29 visibility-fog colour. Two shades
+// lighter than the dark theme background (`0x0a0e1a`) so it reads
+// as a faint fog without contrasting against the rest of the map.
+// The colour is tunable in Phase 35 polish.
+const FOG_COLOR = 0x12162a;
+
 export async function createRenderer(opts: RendererOptions): Promise<RendererHandle> {
 	const theme = opts.theme ?? DARK_THEME;
 	const preference = opts.preference ?? ["webgpu", "webgl"];
@@ -225,6 +267,22 @@ export async function createRenderer(opts: RendererOptions): Promise<RendererHan
 	const allPrimitiveIds: PrimitiveID[] = [];
 	const extraPrimitiveIds = new Set<PrimitiveID>();
 	let currentWorld: World = opts.world;
+	// hiddenIds is the Phase 29 hide-by-id snapshot. Empty by default;
+	// every map-view effect run replaces it with the current
+	// MapToggles-derived set via `setHiddenPrimitiveIds`. Both
+	// renderer-internal hit-test sites (pointer-move, clicked) and the
+	// external `handle.hitAt` thread it through `hitTest`.
+	let hiddenIds: ReadonlySet<PrimitiveID> = EMPTY_HIDDEN_IDS;
+	// Per-copy fog Graphics for the Phase 29 visibility fog overlay.
+	// Created lazily when `setVisibilityFog` first receives a
+	// non-empty list; cleared (and destroyed) when the list goes
+	// empty again. Each fog Graphics is inserted at index 0 of its
+	// torus copy so primitives paint on top.
+	let fogGraphics: Graphics[] = [];
+	const applyHiddenStateTo = (id: PrimitiveID, list: Graphics[]): void => {
+		const visible = !hiddenIds.has(id);
+		for (const g of list) g.visible = visible;
+	};
 	const populatePrimitives = (prim: Primitive, isExtra: boolean): void => {
 		for (const c of copies) {
 			const g = buildGraphics(prim, theme);
@@ -239,6 +297,11 @@ export async function createRenderer(opts: RendererOptions): Promise<RendererHan
 		allPrimitiveIds.push(prim.id);
 		if (prim.kind === "point") pointPrimitivesById.set(prim.id, prim);
 		if (isExtra) extraPrimitiveIds.add(prim.id);
+		// Fresh primitives honour the current hide set so cargo-route
+		// or pending-Send extras pushed after `setHiddenPrimitiveIds`
+		// inherit the right visibility.
+		const list = primitiveGraphics.get(prim.id);
+		if (list !== undefined) applyHiddenStateTo(prim.id, list);
 	};
 	for (const p of opts.world.primitives) {
 		populatePrimitives(p, false);
@@ -347,6 +410,7 @@ export async function createRenderer(opts: RendererOptions): Promise<RendererHan
 			handle.getViewport(),
 			cursorPx,
 			mode,
+			hiddenIds,
 		);
 		const hoveredId = hit?.primitive.id ?? null;
 		if (hoveredId === lastHoveredId) return;
@@ -552,6 +616,7 @@ export async function createRenderer(opts: RendererOptions): Promise<RendererHan
 				handle.getViewport(),
 				cursorPx,
 				mode,
+				hiddenIds,
 			),
 		setExtraPrimitives: (prims) => {
 			// Drop the previous extras layer.
@@ -629,6 +694,49 @@ export async function createRenderer(opts: RendererOptions): Promise<RendererHan
 			// torus tile), so the central-tile entry is representative.
 			return list[Math.min(ORIGIN_COPY_INDEX, list.length - 1)]!.alpha;
 		},
+		setHiddenPrimitiveIds: (ids) => {
+			// Snapshot the input so a later mutation by the caller does
+			// not silently un-hide primitives on the next hit-test.
+			hiddenIds = new Set(ids);
+			for (const [id, list] of primitiveGraphics) {
+				applyHiddenStateTo(id, list);
+			}
+		},
+		isPrimitiveHidden: (id) => hiddenIds.has(id),
+		setVisibilityFog: (circles) => {
+			if (circles.length === 0) {
+				for (const g of fogGraphics) {
+					g.parent?.removeChild(g);
+					g.destroy();
+				}
+				fogGraphics = [];
+				return;
+			}
+			// Recreate the fog Graphics on every call. Pixi v8's
+			// `Graphics.clear()` exists but reusing the same instance
+			// with multiple `.cut()` operations across calls can
+			// accumulate stale path state in our experience; a fresh
+			// Graphics keeps the contract simple.
+			for (const g of fogGraphics) {
+				g.parent?.removeChild(g);
+				g.destroy();
+			}
+			fogGraphics = [];
+			for (const copy of copies) {
+				const g = new Graphics();
+				g.rect(0, 0, opts.world.width, opts.world.height);
+				g.fill({ color: FOG_COLOR, alpha: 1 });
+				for (const c of circles) {
+					g.circle(c.x, c.y, c.radius);
+					g.cut();
+				}
+				// Fog sits below every primitive on the same copy so
+				// planet glyphs paint on top. `addChildAt(g, 0)` keeps
+				// the rest of the children's order intact.
+				copy.addChildAt(g, 0);
+				fogGraphics.push(g);
+			}
+		},
 		resize: (w, h) => {
 			app.renderer.resize(w, h);
 			viewport.resize(w, h, opts.world.width, opts.world.height);
@@ -651,6 +759,15 @@ export async function createRenderer(opts: RendererOptions): Promise<RendererHan
 				teardownPickMode();
 				previous?.onPick(null);
 			}
+			// `app.destroy({...children: true})` below would also walk
+			// fog graphics, but we drop them eagerly so the closure
+			// reference clears even if a future caller queries the
+			// renderer mid-dispose.
+			for (const g of fogGraphics) {
+				g.parent?.removeChild(g);
+				g.destroy();
+			}
+			fogGraphics = [];
 			viewport.off("moved", enforceCentreWhenLarger);
 			viewport.off("moved", wrapTorusCamera);
 			viewport.off("clicked", handleViewportClicked);

ui/frontend/src/map/ship-groups.ts

@@ -31,7 +31,6 @@
 
 import type {
 	GameReport,
-	ReportIncomingShipGroup,
 	ReportLocalShipGroup,
 	ReportOtherShipGroup,
 	ReportPlanet,
@@ -107,14 +106,51 @@ const PRIORITY_INCOMING_POINT = 6;
 const PRIORITY_INCOMING_LINE = 0;
 const PRIORITY_UNIDENTIFIED = 4;
 
+/**
+ * ShipGroupCategory tags every emitted primitive with the toggleable
+ * surface it belongs to. The Phase 29 hide-set machinery in
+ * `lib/active-view/map.svelte` looks these up via `categories` to
+ * decide whether to hide the primitive when the matching `MapToggles`
+ * flag is `false`.
+ */
+export type ShipGroupCategory =
+	| "hyperspaceGroup"
+	| "incomingGroup"
+	| "unidentifiedGroup";
+
 export interface ShipGroupPrimitives {
 	primitives: (PointPrim | LinePrim)[];
 	lookup: Map<PrimitiveID, ShipGroupRef>;
+	categories: Map<PrimitiveID, ShipGroupCategory>;
+	/**
+	 * planetDependents maps a planet number to the set of primitive
+	 * ids that should hide together with that planet. In Phase 29 the
+	 * hide-by-id machinery cascades planet visibility onto in-space
+	 * and incoming groups flying *to* the planet (their points + the
+	 * trajectory / track lines). Unidentified groups have no planet
+	 * anchor and therefore contribute nothing here.
+	 */
+	planetDependents: Map<number, Set<PrimitiveID>>;
+}
+
+function addDependent(
+	planetDependents: Map<number, Set<PrimitiveID>>,
+	planetNumber: number,
+	primitiveId: PrimitiveID,
+): void {
+	let set = planetDependents.get(planetNumber);
+	if (set === undefined) {
+		set = new Set();
+		planetDependents.set(planetNumber, set);
+	}
+	set.add(primitiveId);
 }
 
 export function shipGroupsToPrimitives(report: GameReport): ShipGroupPrimitives {
 	const primitives: (PointPrim | LinePrim)[] = [];
 	const lookup = new Map<PrimitiveID, ShipGroupRef>();
+	const categories = new Map<PrimitiveID, ShipGroupCategory>();
+	const planetDependents = new Map<number, Set<PrimitiveID>>();
 	const planetIndex = new Map<number, ReportPlanet>();
 	for (const planet of report.planets) {
 		planetIndex.set(planet.number, planet);
@@ -129,6 +165,8 @@ export function shipGroupsToPrimitives(report: GameReport): ShipGroupPrimitives
 		const id = SHIP_GROUP_ID_OFFSETS.local + i;
 		primitives.push(makePoint(id, pos.x, pos.y, PRIORITY_LOCAL, STYLE_LOCAL_GROUP));
 		lookup.set(id, { variant: "local", id: group.id });
+		categories.set(id, "hyperspaceGroup");
+		addDependent(planetDependents, group.destination, id);
 		// Yellow dashed track from the origin planet to the destination
 		// planet. The colour matches the in-space group point so the
 		// player can read both as one entity at a glance. Wrap-aware
@@ -140,9 +178,10 @@ export function shipGroupsToPrimitives(report: GameReport): ShipGroupPrimitives
 		if (origin !== undefined && destination !== undefined) {
 			const dx = torusShortestDelta(origin.x, destination.x, w);
 			const dy = torusShortestDelta(origin.y, destination.y, h);
+			const lineId = SHIP_GROUP_ID_OFFSETS.localLine + i;
 			primitives.push({
 				kind: "line",
-				id: SHIP_GROUP_ID_OFFSETS.localLine + i,
+				id: lineId,
 				priority: PRIORITY_LOCAL_LINE,
 				style: STYLE_LOCAL_INSPACE_LINE,
 				hitSlopPx: 0,
@@ -151,6 +190,8 @@ export function shipGroupsToPrimitives(report: GameReport): ShipGroupPrimitives
 				x2: origin.x + dx,
 				y2: origin.y + dy,
 			});
+			categories.set(lineId, "hyperspaceGroup");
+			addDependent(planetDependents, group.destination, lineId);
 		}
 	}
 
@@ -161,6 +202,8 @@ export function shipGroupsToPrimitives(report: GameReport): ShipGroupPrimitives
 		const id = SHIP_GROUP_ID_OFFSETS.other + i;
 		primitives.push(makePoint(id, pos.x, pos.y, PRIORITY_OTHER, STYLE_OTHER_GROUP));
 		lookup.set(id, { variant: "other", index: i });
+		categories.set(id, "hyperspaceGroup");
+		addDependent(planetDependents, group.destination, id);
 	}
 
 	for (let i = 0; i < report.incomingShipGroups.length; i++) {
@@ -189,6 +232,8 @@ export function shipGroupsToPrimitives(report: GameReport): ShipGroupPrimitives
 			x2: destX,
 			y2: destY,
 		});
+		categories.set(lineId, "incomingGroup");
+		addDependent(planetDependents, group.destination, lineId);
 		const pos = interpolateAlongLine(destX, destY, origin.x, origin.y, group.distance);
 		const pointId = SHIP_GROUP_ID_OFFSETS.incoming + i;
 		primitives.push(
@@ -202,6 +247,8 @@ export function shipGroupsToPrimitives(report: GameReport): ShipGroupPrimitives
 			),
 		);
 		lookup.set(pointId, { variant: "incoming", index: i });
+		categories.set(pointId, "incomingGroup");
+		addDependent(planetDependents, group.destination, pointId);
 	}
 
 	for (let i = 0; i < report.unidentifiedShipGroups.length; i++) {
@@ -218,9 +265,10 @@ export function shipGroupsToPrimitives(report: GameReport): ShipGroupPrimitives
 			),
 		);
 		lookup.set(id, { variant: "unidentified", index: i });
+		categories.set(id, "unidentifiedGroup");
 	}
 
-	return { primitives, lookup };
+	return { primitives, lookup, categories, planetDependents };
 }
 
 /**

ui/frontend/src/map/state-binding.ts

@@ -15,8 +15,14 @@
 
 import type { GameReport, ReportPlanet } from "../api/game-state";
 import type { ShipGroupRef } from "../lib/selection.svelte";
-import { buildBattleAndBombingMarkers } from "./battle-markers";
-import { shipGroupsToPrimitives } from "./ship-groups";
+import {
+	buildBattleAndBombingMarkers,
+	type MarkerCategory,
+} from "./battle-markers";
+import {
+	shipGroupsToPrimitives,
+	type ShipGroupCategory,
+} from "./ship-groups";
 import { World, type Primitive, type PrimitiveID, type Style } from "./world";
 
 const STYLE_LOCAL: Style = {
@@ -88,9 +94,45 @@ export type HitTarget =
 	| { kind: "battle"; battleId: string; planet: number }
 	| { kind: "bombing"; planet: number };
 
+/**
+ * PlanetCategory is the per-`ReportPlanet.kind` flavour exposed to the
+ * Phase 29 visibility layer so the gear popover can toggle foreign /
+ * uninhabited / unidentified planets independently of one another.
+ * LOCAL planets stay always-on and therefore have no category-driven
+ * hide path — they are simply excluded from the toggle table.
+ */
+export type PlanetCategory =
+	| "planet-local"
+	| "planet-foreign"
+	| "planet-uninhabited"
+	| "planet-unidentified";
+
+/**
+ * MapCategory unions every toggleable surface the gear popover can
+ * hide. The map view in `lib/active-view/map.svelte` walks the
+ * `categories` map produced by `reportToWorld`, looks the matching
+ * `MapToggles` flag up, and feeds the union of hidden ids into
+ * `RendererHandle.setHiddenPrimitiveIds`.
+ */
+export type MapCategory = PlanetCategory | ShipGroupCategory | MarkerCategory;
+
 export interface ReportToWorldResult {
 	world: World;
 	hitLookup: Map<PrimitiveID, HitTarget>;
+	/**
+	 * categories maps every emitted primitive id to the toggleable
+	 * surface it belongs to. Phase 29 uses this to resolve `MapToggles`
+	 * flags into a hide-by-id set.
+	 */
+	categories: Map<PrimitiveID, MapCategory>;
+	/**
+	 * planetDependents maps a planet number to the set of primitive
+	 * ids whose visibility cascades on that planet. The set always
+	 * contains the planet's own primitive id (planet number itself);
+	 * it grows with battle / bombing markers anchored on the planet
+	 * and with in-space / incoming groups flying *to* it.
+	 */
+	planetDependents: Map<number, Set<PrimitiveID>>;
 }
 
 /**
@@ -108,6 +150,8 @@ export interface ReportToWorldResult {
 export function reportToWorld(report: GameReport): ReportToWorldResult {
 	const primitives: Primitive[] = [];
 	const hitLookup = new Map<PrimitiveID, HitTarget>();
+	const categories = new Map<PrimitiveID, MapCategory>();
+	const planetDependents = new Map<number, Set<PrimitiveID>>();
 
 	for (const planet of report.planets) {
 		primitives.push({
@@ -120,6 +164,14 @@ export function reportToWorld(report: GameReport): ReportToWorldResult {
 			y: planet.y,
 		});
 		hitLookup.set(planet.number, { kind: "planet", number: planet.number });
+		categories.set(planet.number, categoryForPlanet(planet.kind));
+		// Seed the planet's own dependents set with the planet
+		// primitive itself so the cascade iterator does not need a
+		// special "planet-self" case — hiding planet N becomes
+		// "hide everything in planetDependents[N]".
+		const own = new Set<PrimitiveID>();
+		own.add(planet.number);
+		planetDependents.set(planet.number, own);
 	}
 
 	const groups = shipGroupsToPrimitives(report);
@@ -129,6 +181,10 @@ export function reportToWorld(report: GameReport): ReportToWorldResult {
 	for (const [primId, ref] of groups.lookup) {
 		hitLookup.set(primId, { kind: "shipGroup", ref });
 	}
+	for (const [primId, category] of groups.categories) {
+		categories.set(primId, category);
+	}
+	mergeDependents(planetDependents, groups.planetDependents);
 
 	const markers = buildBattleAndBombingMarkers(report);
 	for (const prim of markers.primitives) {
@@ -137,8 +193,44 @@ export function reportToWorld(report: GameReport): ReportToWorldResult {
 	for (const [primId, target] of markers.lookup) {
 		hitLookup.set(primId, target);
 	}
+	for (const [primId, category] of markers.categories) {
+		categories.set(primId, category);
+	}
+	mergeDependents(planetDependents, markers.planetDependents);
 
 	const width = report.mapWidth > 0 ? report.mapWidth : 1;
 	const height = report.mapHeight > 0 ? report.mapHeight : 1;
-	return { world: new World(width, height, primitives), hitLookup };
+	return {
+		world: new World(width, height, primitives),
+		hitLookup,
+		categories,
+		planetDependents,
+	};
+}
+
+function categoryForPlanet(kind: ReportPlanet["kind"]): PlanetCategory {
+	switch (kind) {
+		case "local":
+			return "planet-local";
+		case "other":
+			return "planet-foreign";
+		case "uninhabited":
+			return "planet-uninhabited";
+		case "unidentified":
+			return "planet-unidentified";
+	}
+}
+
+function mergeDependents(
+	into: Map<number, Set<PrimitiveID>>,
+	from: Map<number, Set<PrimitiveID>>,
+): void {
+	for (const [planetNumber, ids] of from) {
+		let set = into.get(planetNumber);
+		if (set === undefined) {
+			set = new Set();
+			into.set(planetNumber, set);
+		}
+		for (const id of ids) set.add(id);
+	}
 }

ui/frontend/src/map/visibility.ts

@@ -0,0 +1,210 @@
+// Pure helpers for the Phase 29 visibility layer. The map view
+// (`lib/active-view/map.svelte`) reads `GameStateStore.mapToggles`
+// every effect run and feeds the result through these functions to
+// produce the renderer inputs:
+//
+//   1. `computeHiddenPlanetNumbers` resolves the per-kind toggles and
+//      the optional `unreachablePlanets` filter into a set of planet
+//      numbers to hide. LOCAL planets are always exempt.
+//   2. `computeHiddenIds` cascades that set onto every primitive id
+//      tracked in `planetDependents` (planet, marker, in-space and
+//      incoming group, trajectory line), then unions in the
+//      category-toggled-off primitives walked from `categories`.
+//   3. `computeFogCircles` produces the visibility-fog input —
+//      empty when the toggle is off, otherwise one circle per LOCAL
+//      planet at `VisibilityDistance(localPlayerDrive)`.
+//
+// The constants `FLIGHT_DISTANCE_PER_DRIVE` and
+// `VISIBILITY_DISTANCE_PER_DRIVE` mirror `pkg/calc/race.go`:
+//
+//   FlightDistance(driveTech)     = driveTech * 40
+//   VisibilityDistance(driveTech) = driveTech * 30
+//
+// A WASM bridge for the race-level calc helpers does not exist yet
+// (Phase 18 wired ship-level math only); the constants are
+// duplicated in TS following the same precedent as
+// `lib/inspectors/ship-group/actions.svelte` (`40 * localPlayerDrive`)
+// and `sync/order-types.ts:298`.
+
+import type { GameReport } from "../api/game-state";
+import type { MapToggles } from "../lib/game-state.svelte";
+import { torusShortestDistance } from "./math";
+import type { MapCategory } from "./state-binding";
+import type { PrimitiveID } from "./world";
+
+export const FLIGHT_DISTANCE_PER_DRIVE = 40;
+export const VISIBILITY_DISTANCE_PER_DRIVE = 30;
+
+/**
+ * isCategoryVisible reports whether the supplied `MapCategory` is
+ * currently visible per the toggle state. LOCAL planets are not
+ * controlled by a toggle; the function returns `true` for them
+ * unconditionally. The map view combines this with the planet
+ * cascade so a kind toggle (e.g. `foreignPlanets = false`) hides
+ * the planet itself AND every dependent primitive (markers, in-
+ * space groups flying to it).
+ */
+export function isCategoryVisible(
+	category: MapCategory,
+	toggles: MapToggles,
+): boolean {
+	switch (category) {
+		case "planet-local":
+			return true;
+		case "planet-foreign":
+			return toggles.foreignPlanets;
+		case "planet-uninhabited":
+			return toggles.uninhabitedPlanets;
+		case "planet-unidentified":
+			return toggles.unidentifiedPlanets;
+		case "hyperspaceGroup":
+			return toggles.hyperspaceGroups;
+		case "incomingGroup":
+			return toggles.incomingGroups;
+		case "unidentifiedGroup":
+			return toggles.unidentifiedGroups;
+		case "battleMarker":
+			return toggles.battleMarkers;
+		case "bombingMarker":
+			return toggles.bombingMarkers;
+	}
+}
+
+/**
+ * computeHiddenPlanetNumbers returns every non-LOCAL planet whose
+ * kind toggle is off or — when `unreachablePlanets` is off — which
+ * sits beyond `FlightDistance(localPlayerDrive)` of every LOCAL
+ * planet. LOCAL planets themselves are never returned.
+ *
+ * `localPlayerDrive === 0` (zero drive tech) collapses the reach
+ * threshold to zero, so when `unreachablePlanets` is off the
+ * function returns every non-LOCAL planet — matching the engine's
+ * "no fleet can move" baseline.
+ */
+export function computeHiddenPlanetNumbers(
+	report: GameReport,
+	toggles: MapToggles,
+): Set<number> {
+	const hidden = new Set<number>();
+	if (report.planets.length === 0) return hidden;
+	const localPlanets: { x: number; y: number }[] = [];
+	for (const p of report.planets) {
+		if (p.kind === "local") localPlanets.push({ x: p.x, y: p.y });
+	}
+	const reachThreshold =
+		toggles.unreachablePlanets || localPlanets.length === 0
+			? Infinity
+			: report.localPlayerDrive * FLIGHT_DISTANCE_PER_DRIVE;
+	for (const p of report.planets) {
+		if (p.kind === "local") continue;
+		let kindVisible: boolean;
+		switch (p.kind) {
+			case "other":
+				kindVisible = toggles.foreignPlanets;
+				break;
+			case "uninhabited":
+				kindVisible = toggles.uninhabitedPlanets;
+				break;
+			case "unidentified":
+				kindVisible = toggles.unidentifiedPlanets;
+				break;
+		}
+		if (!kindVisible) {
+			hidden.add(p.number);
+			continue;
+		}
+		if (reachThreshold === Infinity) continue;
+		let reachable = false;
+		for (const lp of localPlanets) {
+			const d = torusShortestDistance(
+				p.x,
+				p.y,
+				lp.x,
+				lp.y,
+				report.mapWidth > 0 ? report.mapWidth : 1,
+				report.mapHeight > 0 ? report.mapHeight : 1,
+			);
+			if (d <= reachThreshold) {
+				reachable = true;
+				break;
+			}
+		}
+		if (!reachable) hidden.add(p.number);
+	}
+	return hidden;
+}
+
+/**
+ * computeHiddenIds resolves the toggle state into the final hide-by-
+ * id set fed to `RendererHandle.setHiddenPrimitiveIds`. Inputs:
+ *
+ *   - `categories`: every primitive's toggleable surface, as
+ *     produced by `reportToWorld`.
+ *   - `planetDependents`: for each planet number, the primitive ids
+ *     whose visibility cascades on that planet (planet itself, the
+ *     markers anchored on it, in-space / incoming groups flying to
+ *     it, their lines). Produced by `reportToWorld`.
+ *   - `hiddenPlanetNumbers`: the kind / reach-filtered set from
+ *     `computeHiddenPlanetNumbers`.
+ *   - `toggles`: the per-category toggle state.
+ *
+ * Returns the union of (a) every primitive id whose category toggle
+ * is off and (b) every dependent of a hidden planet number.
+ */
+export function computeHiddenIds(
+	categories: ReadonlyMap<PrimitiveID, MapCategory>,
+	planetDependents: ReadonlyMap<number, ReadonlySet<PrimitiveID>>,
+	hiddenPlanetNumbers: ReadonlySet<number>,
+	toggles: MapToggles,
+): Set<PrimitiveID> {
+	const hidden = new Set<PrimitiveID>();
+	for (const [id, category] of categories) {
+		if (!isCategoryVisible(category, toggles)) hidden.add(id);
+	}
+	for (const planetNumber of hiddenPlanetNumbers) {
+		const deps = planetDependents.get(planetNumber);
+		if (deps === undefined) continue;
+		for (const id of deps) hidden.add(id);
+	}
+	return hidden;
+}
+
+/**
+ * computeFogCircles produces the visibility-fog input — empty when
+ * the toggle is off, otherwise one circle per LOCAL planet at
+ * `VisibilityDistance(localPlayerDrive)`. When the drive tech is
+ * zero the function returns an empty list as well: a zero-radius
+ * fog cutout would leave the entire world fogged, which is more
+ * confusing than helpful in tutorial / debug scenarios. The
+ * renderer-side fog Graphics is destroyed on an empty list.
+ */
+export function computeFogCircles(
+	report: GameReport,
+	toggles: MapToggles,
+): { x: number; y: number; radius: number }[] {
+	if (!toggles.visibilityFog) return [];
+	const radius = report.localPlayerDrive * VISIBILITY_DISTANCE_PER_DRIVE;
+	if (radius <= 0) return [];
+	const circles: { x: number; y: number; radius: number }[] = [];
+	for (const p of report.planets) {
+		if (p.kind !== "local") continue;
+		circles.push({ x: p.x, y: p.y, radius });
+	}
+	return circles;
+}
+
+/**
+ * fingerprintHiddenPlanets returns a stable string identifying the
+ * supplied hidden-planet set. The map view threads it into the
+ * extras fingerprint so a toggle flip that changes the planet set
+ * — and therefore changes which routes / pending-Send lines must be
+ * filtered out — reliably triggers an `setExtraPrimitives` push.
+ */
+export function fingerprintHiddenPlanets(
+	hiddenPlanetNumbers: ReadonlySet<number>,
+): string {
+	if (hiddenPlanetNumbers.size === 0) return "";
+	return Array.from(hiddenPlanetNumbers)
+		.sort((a, b) => a - b)
+		.join(",");
+}

ui/frontend/src/routes/__debug/store/+page.svelte

@@ -9,9 +9,11 @@
 	import type { OrderCommand } from "../../../sync/order-types";
 	import {
 		getMapCamera,
+		getMapFog,
 		getMapPickState,
 		getMapPrimitives,
 		type MapCameraSnapshot,
+		type MapFogSnapshot,
 		type MapPickStateSnapshot,
 		type MapPrimitiveSnapshot,
 	} from "../../../lib/debug-surface.svelte";
@@ -39,6 +41,7 @@
 		getMapPrimitives(): readonly MapPrimitiveSnapshot[];
 		getMapPickState(): MapPickStateSnapshot;
 		getMapCamera(): MapCameraSnapshot | null;
+		getMapFog(): MapFogSnapshot;
 	}
 
 	type DebugWindow = typeof globalThis & { __galaxyDebug?: DebugSurface };
@@ -136,6 +139,9 @@
 			getMapCamera() {
 				return getMapCamera();
 			},
+			getMapFog() {
+				return getMapFog();
+			},
 		};
 		(window as DebugWindow).__galaxyDebug = surface;
 		ready = true;