Fix feed detail score hydration

[azizu06]

Summary

• render the persisted feed-detail Cap Score statically so server and first client paint match
• preserve CountUp animation for the interactive analyzer scorecard
• assert the stable non-animated behavior and strict desktop/mobile feed console health
• mock external YouTube resources so browser console assertions remain deterministic

TDD and verification

• RED: focused CountUp test rendered 0 instead of the requested stable 28
• GREEN: focused CountUp test passed after adding the explicit animate={false} path
• Node 22.19.0 lint and typecheck passed
• 325 unit/component tests passed with 6 credential-gated skips
• production build passed
• e2e/feed.spec.ts: 6 passed across desktop and mobile Chromium with zero runtime errors

Closes #42

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Project	Deployment	Actions	Updated (UTC)
capcheck	Ready	Preview, Comment	Jul 12, 2026 7:18pm