Move test utilities from lib/ to test/ directory

- Rename `lib/test-preload.ts` → `test/preload.ts` and
  `lib/test-utils.ts` → `test/sqlite.ts`
- Update `bunfig.toml` preload path to `./test/preload.ts`
- Update all service test imports from `@/lib/test-utils` to
  `@/test/sqlite`

components/command-palette.tsx

@@ -44,7 +44,23 @@ import {
   MAX_RECENT,
   recentSearchesAtom,
 } from "@/lib/atoms/command-palette";
-import { SHORTCUT_DESCRIPTIONS } from "@/lib/constants/shortcuts";
+
+// Static shortcut descriptions for the help dialog.
+// TanStack's HotkeyManager/SequenceManager handle all actual key listening.
+const SHORTCUT_DESCRIPTIONS = [
+  { scope: "Global", description: "Search", keys: ["/"] },
+  { scope: "Global", description: "Keyboard shortcuts", keys: ["?"] },
+  { scope: "Navigation", description: "Go to dashboard", keys: ["g", "h"] },
+  { scope: "Navigation", description: "Go to explore", keys: ["g", "e"] },
+  { scope: "Title", description: "Cycle status", keys: ["w"] },
+  { scope: "Title", description: "Mark watched", keys: ["m"] },
+  { scope: "Title", description: "Go back", keys: ["Escape"] },
+  { scope: "Title", description: "Rate 1 star", keys: ["1"] },
+  { scope: "Title", description: "Rate 2 stars", keys: ["2"] },
+  { scope: "Title", description: "Rate 3 stars", keys: ["3"] },
+  { scope: "Title", description: "Rate 4 stars", keys: ["4"] },
+  { scope: "Title", description: "Rate 5 stars", keys: ["5"] },
+] as const;
 
 const groupedShortcuts: Record<
   string,