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/ViewerAppController.ts

@@ -68,7 +68,6 @@ export class ViewerAppController {
 
   readonly hudState: ViewerHudState;
   readonly selectionStore: ViewerSelectionStore;
-  private readonly opsStripEl: HTMLDivElement;
   private readonly historyLayerEl: HTMLDivElement;
   private readonly marqueeEl: HTMLDivElement;
   private readonly hoverLabelEl: HTMLDivElement;
@@ -122,7 +121,6 @@ export class ViewerAppController {
     this.container = container;
     this.hudState = hud.state;
     this.selectionStore = hud.selectionStore;
-    this.opsStripEl = hud.opsStripEl;
     this.historyLayerEl = hud.historyLayerEl;
     this.marqueeEl = hud.marqueeEl;
     this.hoverLabelEl = hud.hoverLabelEl;