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/hooks/useTimelinePlayer.ts

@@ -199,8 +199,7 @@ export function useTimelinePlayer() {
       }
 
       return bestAdapter;
-    } catch (err) {
-      console.warn("[useTimelinePlayer] Could not get playback adapter (cross-origin)", err);
+    } catch {
       return null;
     }
   }, []);
@@ -264,9 +263,7 @@ export function useTimelinePlayer() {
           }
         }
       }
-    } catch (err) {
-      console.warn("[useTimelinePlayer] Could not set playback rate (cross-origin)", err);
-    }
+    } catch {}
   }, []);
   const applyPreviewAudioState = useCallback((playbackRateOverride?: number) => {
     const { audioMuted, playbackRate } = usePlayerStore.getState();
@@ -506,9 +503,7 @@ export function useTimelinePlayer() {
           if (msSinceTimeline > 500) {
             enrichMissingCompositionsRef.current();
           }
-        } catch (err) {
-          console.warn("[useTimelinePlayer] Could not read clip manifest from iframe", err);
-        }
+        } catch {}
       }
       if (data?.source === "hf-preview" && data?.type === "timeline" && Array.isArray(data.clips)) {
         lastTimelineMessageRef.current = Date.now();
@@ -524,12 +519,7 @@ export function useTimelinePlayer() {
                 syncTimelineElements(els);
               }
             }
-          } catch (err) {
-            console.warn(
-              "[useTimelinePlayer] Could not read timeline elements on navigate (cross-origin)",
-              err,
-            );
-          }
+          } catch {}
         }
       }
     };

packages/studio/src/player/hooks/useTimelineSyncCallbacks.ts

@@ -164,9 +164,7 @@ export function useTimelineSyncCallbacks({
         const dedupedMissing = missing.filter((m) => !finalIds.has(m.id));
         syncTimelineElements([...updatedEls, ...dedupedMissing]);
       }
-    } catch (err) {
-      console.warn("[useTimelinePlayer] enrichMissingCompositions failed", err);
-    }
+    } catch {}
   }, [iframeRef, syncTimelineElements]);
 
   const initializeAdapter = useCallback(() => {
@@ -241,9 +239,7 @@ export function useTimelineSyncCallbacks({
           if (fallbackElement) syncTimelineElements([fallbackElement]);
         }
       }
-    } catch (err) {
-      console.warn("[useTimelinePlayer] Could not read timeline elements from iframe", err);
-    }
+    } catch {}
     return true;
   }, [
     getAdapter,
@@ -295,9 +291,6 @@ export function useTimelineSyncCallbacks({
     probeIntervalRef.current = setTimeout(() => {
       if (!settled) {
         trySettle();
-        if (!settled) {
-          console.warn("[useTimelinePlayer] Runtime did not signal readiness within 5s");
-        }
       }
       window.removeEventListener("message", onMessage);
     }, 5000) as unknown as ReturnType<typeof setInterval>;