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/components/editor/BlockParamsPanel.tsx

@@ -12,7 +12,7 @@ interface BlockParamsPanelProps {
 export const BlockParamsPanel = memo(function BlockParamsPanel({
   blockTitle,
   params,
-  compositionPath,
+  compositionPath: _compositionPath,
   onClose,
 }: BlockParamsPanelProps) {
   const [values, setValues] = useState<Record<string, string>>(() => {
@@ -23,13 +23,9 @@ export const BlockParamsPanel = memo(function BlockParamsPanel({
     return initial;
   });
 
-  const handleChange = useCallback(
-    (key: string, value: string) => {
-      setValues((prev) => ({ ...prev, [key]: value }));
-      console.log(`[BlockParams] ${compositionPath} ${key}: ${value}`);
-    },
-    [compositionPath],
-  );
+  const handleChange = useCallback((key: string, value: string) => {
+    setValues((prev) => ({ ...prev, [key]: value }));
+  }, []);
 
   return (
     <div className="flex flex-col h-full">

packages/studio/src/components/editor/snapTargetCollection.ts

@@ -100,11 +100,6 @@ export function collectSnapContext(input: {
 
   const MAX_SNAP_TARGETS = 80;
   const elements = collectVisibleElements(root, input.excludeElements, MAX_SNAP_TARGETS);
-  if (elements.length >= MAX_SNAP_TARGETS) {
-    console.warn(
-      `[snap] Target cap reached (${MAX_SNAP_TARGETS}). Elements beyond this limit are excluded from snap alignment.`,
-    );
-  }
 
   const entries: Array<{
     rect: { left: number; top: number; width: number; height: number };