chore(studio): remove all console.* calls from studio package (#1691)

* chore(studio): remove all console.* calls from studio package

* chore(studio): address review — remove dead stubs, restore consent notice

- Delete empty if-blocks left after console removal (snapTargetCollection,
  Player asset-poll, useTimelineSyncCallbacks 5s probe, useGestureRecording
  dev guard + now-unused isDevBuild) and the stale "surface in dev" comment.
- Drop the dangling no-console pragma + dead duplicate-id branch in sourcePatcher.
- Restore the one-time telemetry consent disclosure in showNoticeOnce (kept
  behind a pragma — it is a user-facing notice, not debug noise).
- Remove the missed timelineIcons console.warn while preserving the
  `tag || "div"` null-safety fallback.
- Route caption auto-save failures (a data-loss path) through telemetry
  instead of swallowing silently.
- Restore the accidentally-clobbered css-var-fonts output.mp4 fixture.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/studio/src/player/components/Player.tsx

@@ -252,11 +252,6 @@ export const Player = forwardRef<HTMLIFrameElement, PlayerProps>(
                 if (assetPollRef.current) clearInterval(assetPollRef.current);
                 assetPollRef.current = null;
                 setAssetsLoading(false);
-                if (lastUnloaded) {
-                  console.debug(
-                    "[Player] Asset-loading overlay timed out after 10s; hiding anyway. Check network or asset integrity.",
-                  );
-                }
               }
             }, 100);
           } else {

packages/studio/src/player/components/timelineIcons.tsx

@@ -39,7 +39,7 @@ const ICONS: Record<string, ReactNode> = {
 };
 
 export function getTrackStyle(tag: string): TrackVisualStyle {
-  if (!tag) console.warn("[Timeline] getTrackStyle received empty tag, defaulting to div");
+  // Defensive: callers may pass an empty/undefined tag; fall back to "div".
   const safeTag = tag || "div";
   const trackStyle = getTimelineTrackStyle(safeTag);
   const normalized = safeTag.toLowerCase();