refactor(ui): every function compiles under the React Compiler but VirtualGrid, and react-hooks/refs is on

E32 S4 — the burn-down from 29 skipped functions to 1:

- try/finally (26 sites): the cleanup runs after a try/catch; steps that return early moved into
  their own function (push, the setup wizard's next, the share page's unlock).
- A conditional, loop or optional call inside a try skips the function too, and react-hooks/todo
  does not see it: the value is computed before the try, or the try lives in a module-level helper
  (config writes, clip queueing, clipboard, frame counts, seekable end, YouTube player times).
- The two exhaustive-deps suppressions are gone. useYtProgress takes its per-item snapshot through
  one effect event, read once when the player is built; PlexPlayer's unmount relies on the
  leaving-the-item cleanup for the generation bump it duplicated.
- What the skips hid: PlexPlayer's 17 render-phase ref writes (useLatest), its tracks popover alias,
  the loadSession self-reference (declared early, set after commit); PlayerModal's session-position
  read during render (now where the player starts), navRef/modeRef writes, and a description helper
  that ran a ref-carrying callback during render (now PlayerDescription); SavedViewsProvider's
  latest-cfg ref, and its setState in the seed effect (preferSticky now prefers the starred default
  among same-filter views, so the seed needs no sticky write — test seen red on the old helper).
- A store's hook was called `use()`, which the compiler does not know as a hook: inside the newly
  compiled usePlaylistActions it was memoized, ran on the first render alone, and the playlist rail
  threw "rendered fewer hooks" on its second render. Renamed to `useValue()` everywhere; the old
  contract test claimed the call was safe inside any `use…` function, which was false — replaced by
  a render test that is red under the old name.
- PlexPlayer's palette ref was written and never read since the Backspace guard moved to the layer
  stack: removed.

react-hooks/refs is back at error with no exception. The ratchet lists only VirtualGrid
(IncompatibleLibrary) and pins both players as compiled. No size or complexity ceiling was raised.

frontend/src/components/compilerCoverage.contract.test.ts

@@ -13,38 +13,14 @@ import { compileReport, shippedSources, type CompileReport } from "./compilerSki
 //   • a NEW skip (or a known one changing category) — fix the function; if it truly cannot be
 //     compiled, adding it here is a decision for the owner, with the reason in docs/gates.md;
 //   • a skip that is GONE — delete its entry, so the list only ever shrinks.
-// E32 burns it down: S3 took it from 93 to 29 (the popover engine's `ref={pop.refs.setReference}`
-// — read through destructuring now — and every render-phase ref write, moved to `useEffectEvent` /
-// `useLatest`). Left: try/finally and other Todo shapes, and the two exhaustive-deps suppressions.
-// The end state is IncompatibleLibrary alone (VirtualGrid on TanStack Virtual).
+// E32 burned it down from 93 to the one function below: S3 read the popover engine through
+// destructuring and moved every render-phase ref write to `useEffectEvent` / `useLatest`; S4 took
+// try/finally and every conditional, loop or optional call out of try blocks (the compiler cannot
+// lower them yet — and `react-hooks/todo` does not see the latter, so THIS test is what catches them)
+// and replaced the two exhaustive-deps suppressions, each of which skipped its whole function.
+// VirtualGrid stays: TanStack Virtual's API cannot be memoized safely (IncompatibleLibrary).
 const KNOWN_SKIPS: CompileReport["skipped"] = {
-  "components/AddToPlaylist.tsx": { MembershipPanel: "Todo" },
-  "components/ConfigPanel.tsx": { ConfigPanel: "Todo" },
-  "components/DownloadCenter.tsx": { DownloadCenter: "Todo" },
-  "components/DownloadDialog.tsx": { DownloadDialog: "Todo" },
-  "components/KeyGate.tsx": { KeyGate: "Todo" },
-  "components/PlayerModal.tsx": { PlayerModal: "Todo" },
-  "components/PlaylistsRail.tsx": { PlaylistsRail: "Todo" },
-  "components/PlexCollectionEditor.tsx": { PlexCollectionEditor: "Todo" },
-  "components/PlexCollectionView.tsx": { PlexCollectionView: "Todo" },
-  "components/PlexPlayer.tsx": { PlexPlayer: "Suppression" },
-  "components/PlexPlaylistAdd.tsx": { PlexPlaylistAdd: "Todo" },
-  "components/PlexStatsOverlay.tsx": { PlexStatsOverlay: "Todo" },
-  "components/SavedViewsProvider.tsx": { SavedViewsProvider: "Todo" },
-  "components/SettingsPanel.tsx": { SignInMethods: "Todo" },
-  "components/SetupWizard.tsx": { SetupWizard: "Todo" },
-  "components/UploadDialog.tsx": { UploadDialog: "Todo" },
-  "components/VideoEditor.tsx": { VideoEditor: "Todo" },
-  "components/WatchPage.tsx": { WatchPage: "Todo", useMediaSession: "Todo" },
-  "components/Welcome.tsx": { AuthCard: "Todo" },
-  "components/plexViews.tsx": { PlexSeasonView: "Todo", PlexShowView: "Todo" },
   "components/ui/VirtualGrid.tsx": { VirtualGrid: "IncompatibleLibrary" },
-  "components/useDebugRecording.ts": { useDebugRecording: "Todo" },
-  "components/useDownloadActions.tsx": { useDownloadActions: "Todo" },
-  "components/usePlaylistActions.tsx": { usePlaylistActions: "Todo" },
-  "components/usePlexPlaylistEdits.ts": { usePlexPlaylistEdits: "Todo" },
-  "lib/playerModalHooks.ts": { useYtProgress: "Suppression" },
-  "lib/plexPlayerHooks.ts": { usePlexTracks: "Todo" },
 };
 
 // The files a regression hurt most: compiled, and they must stay so (a positive check too, so a
@@ -56,6 +32,10 @@ const MUST_COMPILE: Record<string, string[]> = {
   "components/ui/FocusSafeButton.tsx": ["FocusSafeButton"],
   "components/ui/anchoredPopoverHooks.ts": ["useAnchoredPopover"],
   "components/ui/AnchoredPopover.tsx": ["PopoverSurfaceInner"],
+  // The two players — the largest components here, and the last to compile (E32 S4).
+  "components/PlexPlayer.tsx": ["PlexPlayer"],
+  "components/PlayerModal.tsx": ["PlayerModal"],
+  "lib/playerModalHooks.ts": ["useYtProgress"],
 };
 
 type Row = [file: string, fn: string, category: string];