feat(web): subscriptions overview groups, coverage matrix view and v2 form (FE-5)

- Overview: kind tabs, five groups with server counts, card/list views,
  slot badges, progress (unknown total = "?"), filters in URL, batch actions
- Detail /console/subscriptions/🆔 season tabs, episode x version-target
  matrix with cell sheet (manual fill, plan link), drag slot order,
  auto-fill switch and fill budget, refresh coverage
- Create/edit dialog (basic/advanced): work picker via global search,
  season/range/total, sites, rule groups, include/exclude, templates,
  upgrade strategy, downloader/save path; 409 links to existing subscription

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/web/scripts/smoke.mjs

@@ -35,6 +35,7 @@ const STATIC_ROUTES = [
   "/console/files?mock=0",
   "/console/files/trash",
   "/console/subscriptions",
+  "/console/subscriptions?group=pending&sort=missing",
   "/console/rules",
   "/console/preferences",
   "/console/sites",
@@ -73,6 +74,7 @@ const DETAIL_ROUTES = [
   { route: "/console/sites/:id", list: "/api/v1/sites", after: "?tab=organized" },
   { route: "/console/sites/:id", list: "/api/v1/sites", after: "?tab=snapshots" },
   { route: "/console/sites/:id", list: "/api/v1/sites", after: "?tab=accounts" },
+  { route: "/console/subscriptions/:id", list: "/api/v1/subscriptions" },
   { route: "/console/downloads/:id", list: "/api/v1/download-tasks" },
   { route: "/console/tasks/:id", list: "/api/v1/engine/runs" },
   { route: "/console/tasks?run=:id", list: "/api/v1/engine/runs" },