fix(ui): F8-10 owner-feedback — persistent filters, camera, disabled visual, dropdown narrowing (#53)

Polish pass after the first F8-10 walkthrough:

  - table-planets: moved the `foreign` chip to the end of the row and
    hid the race dropdown until `foreign` is on (it never made sense
    to pick a race while the bucket itself was off).
  - persistent per-table filter / sort state — extracted to
    `table-{planets,ship-groups,fleets}-state.svelte.ts` singletons so
    a row click → map → back to the table restores the prior chip /
    dropdown / sort state. Held in memory only; an F5 still resets.
  - table-ship-groups: the planet and class dropdowns now narrow to
    the slice surviving the owner checkboxes, so toggling `foreign`
    off removes planets / classes touched only by foreign rows.
  - map.svelte: camera (centre + zoom) is captured on every dispose
    path into a new `GameStateStore.lastCamera` and consumed on the
    next mount, so leaving the map for any other active view and
    coming back restores the prior pan / zoom. A pending focus from
    the tables still wins for the centre point.
  - table-ship-classes: `:disabled` now reads as disabled (muted
    colour, no hover ring, not-allowed cursor) — the click was already
    a no-op, only the visual was lying.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ui/frontend/src/lib/active-view/table-planets-state.svelte.ts

@@ -0,0 +1,48 @@
+// F8-10 planets table — module-level filter / sort rune.
+//
+// Held outside the component so the user's filter selections survive
+// the component being unmounted (e.g. row click → map → back to the
+// table). Held in memory only; an F5 reloads the report and the
+// defaults take over.
+
+export type PlanetSortColumn =
+	| "number"
+	| "name"
+	| "kind"
+	| "owner"
+	| "size"
+	| "resources";
+
+export type PlanetSortDirection = "asc" | "desc";
+
+export interface PlanetsTableState {
+	sortColumn: PlanetSortColumn;
+	sortDirection: PlanetSortDirection;
+	showLocal: boolean;
+	showOther: boolean;
+	showUninhabited: boolean;
+	showUnknown: boolean;
+	ownerFilter: string;
+}
+
+const DEFAULT_STATE: PlanetsTableState = {
+	sortColumn: "number",
+	sortDirection: "asc",
+	showLocal: true,
+	showOther: true,
+	showUninhabited: true,
+	showUnknown: true,
+	ownerFilter: "",
+};
+
+export const planetsTableState: PlanetsTableState = $state({ ...DEFAULT_STATE });
+
+/**
+ * resetPlanetsTableState restores every field to its default value.
+ * Production code never calls it; the Vitest harness uses it from
+ * `beforeEach` to keep cases independent (the rune is a module-level
+ * singleton that otherwise carries state across test boundaries).
+ */
+export function resetPlanetsTableState(): void {
+	Object.assign(planetsTableState, DEFAULT_STATE);
+}