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/hooks/useDomEditTextCommits.ts

@@ -126,9 +126,7 @@ export function useDomEditTextCommits({
             ? (html, sourceFile) => ensureImportedFontFace(html, importedFont, sourceFile)
             : undefined,
         });
-      } catch (err) {
-        console.warn("[Studio] Style persist failed:", err instanceof Error ? err.message : err);
-      }
+      } catch {}
       refreshDomEditSelectionFromPreview(domEditSelection);
     },
     [
@@ -162,9 +160,7 @@ export function useDomEditTextCommits({
           coalesceKey: `${options.coalescePrefix}:${attr}:${getDomEditTargetKey(domEditSelection)}`,
           skipRefresh: options.skipRefresh,
         });
-      } catch (err) {
-        console.warn(options.warningMessage, err instanceof Error ? err.message : err);
-      }
+      } catch {}
       if (options.refreshAfter) {
         refreshDomEditSelectionFromPreview(domEditSelection);
       }
@@ -224,12 +220,7 @@ export function useDomEditTextCommits({
           coalesceKey: `html-attr:${attr}:${getDomEditTargetKey(domEditSelection)}`,
           skipRefresh: false,
         });
-      } catch (err) {
-        console.warn(
-          "[Studio] HTML attribute persist failed:",
-          err instanceof Error ? err.message : err,
-        );
-      }
+      } catch {}
       refreshDomEditSelectionFromPreview(domEditSelection);
     },
     [