feat(viewer): add GM Ops Console window replacing ops strip

Introduces a floating, draggable, resizable Game Master console as the
first of a planned series of GM/debug windows. Replaces the horizontal
ops-strip card layout with proper data tables using TanStack Table v8.

- GmWindow.vue: reusable draggable+resizable floating window base;
  snapshots offsetWidth/Height on drag start so resize is preserved
- GmOpsWindow.vue: Ships / Stations / Factions tabs with global filter,
  column sorting, and drag-to-reorder columns (useColumnOrder composable)
- gmStore.ts: Pinia store fed from ViewerWorldLifecycle.rebuildFactions
  with raw world arrays (ships, stations, factions)
- Removes opsStripEl binding (was stored but never read by controller)
- GM Console toggle button replaces the bottom ops strip

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/viewer/src/ui/stores/gmStore.ts

@@ -0,0 +1,23 @@
+import { defineStore } from "pinia";
+import type { ShipSnapshot } from "../../contractsShips";
+import type { StationSnapshot } from "../../contractsInfrastructure";
+import type { FactionSnapshot } from "../../contractsFactions";
+
+export const useGmStore = defineStore("gm", {
+  state: () => ({
+    ships: [] as ShipSnapshot[],
+    stations: [] as StationSnapshot[],
+    factions: [] as FactionSnapshot[],
+  }),
+  actions: {
+    updateWorld(
+      ships: ShipSnapshot[],
+      stations: StationSnapshot[],
+      factions: FactionSnapshot[],
+    ) {
+      this.ships = ships;
+      this.stations = stations;
+      this.factions = factions;
+    },
+  },
+});