fix(studio): stop 3M/day rejection flood from composition 404s#1033
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Two fixes for the 3M+ unhandled_promise_rejection events/day spike: 1. Filter: suppress "Error fetching ... 404" rejections from composition code — these are asset-not-found content errors, not Studio bugs. 2. Rate-limit: cap both error and rejection telemetry at 50 per session. After the cap, emit a single *_cap_reached event so we know capping occurred without generating unlimited events. 3. Root cause: webAudioTransport now checks response.ok before decode and caches failed URLs in _failedSrcs so repeat ticks don't re-fetch the same 404 on every playback frame. Also add playground/ to fallow ignorePatterns — local experiment directory was tripping the audit gate.
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Summary
webAudioTransportso playback ticks don't re-fetch the same 404 every frameTest plan
bun run --cwd packages/core build— cleanbun run --cwd packages/studio build— cleanbun run --cwd packages/core test— 984 tests pass