feat(review): High quality playback switch and per-version ProRes download

Worker 1.7.0 (preview.highQuality, default on) now, after the AE render:
- encodes a High quality MP4 from the delivery MOV (full-res H.264 High,
  CRF 14 capped at 100 Mbps) -> Version.hqFileUrl
- uploads the MOV itself -> Version.highResKey/Filename/Size
Both best-effort (the preview never fails over them), with a lease
keep-alive during the long encode/uploads; the export timeline records
what was attached.

Player: HQ switch when a High quality source exists; keeps frame, play
state, speed and zoom, remembered per browser, falls back to Standard if
the file won't load. ProRes itself stays download-only (browser support).

Downloads: the client portal's High Res button serves the version's
ProRes (client-code filename), falling back to the shot's manual file;
staff get a ProRes button on the review page.

Housekeeping (lib/render-pipeline/high-res.ts): HQ MP4 + ProRes are kept
while a version is latest, client-shared, approved or younger than
preview.highResRetentionDays (14); otherwise deleted from storage. Runs
per task after finalize and hourly from the reaper; deleting a version or
a reslate removes its files. The Standard MP4 is never touched.

Also: ProRes/Handles top-bar buttons go icon-only below lg so they don't
overlap the version selector.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

lib/shot-code.ts

@@ -39,3 +39,16 @@ export function clientTaskTitle(title: string, shot: ShotCodeFields): string {
   // otherwise need escaping.
   return title.split(shot.shotCode).join(alias);
 }
+
+/**
+ * The High Res (ProRes) download name for a client. With an alias it follows
+ * the slate's client naming, `{clientCode}_{version}` — no internal code and
+ * no "_cmp_TT_" studio suffix; without one the file keeps its own name.
+ */
+export function clientHighResFilename(fileName: string, shot: ShotCodeFields | null): string {
+  const alias = shot?.clientCode?.trim();
+  if (!shot || !alias || alias === shot.shotCode) return fileName;
+  const m = /_(v\d+)(\.[a-z0-9]+)$/i.exec(fileName);
+  if (m && fileName.startsWith(shot.shotCode)) return `${alias}_${m[1]}${m[2]}`;
+  return fileName.split(shot.shotCode).join(alias);
+}