refactor(remotion): name demo animation constants

[eduardbar]

Refs #42

Summary

• Name DriftReadmeDemo animation frames, dimensions, offsets, scales, and layout values with semantic constants.
• Preserve composition registration, props, exact timings, colors, and rendered behavior.
• Reduce the target's self-scan findings from 23 to 2 without rule/config changes.

Verification

• Remotion TypeScript check
• Root build and full tests: 351 passed
• Frame 72 render sanity verified at 1200x675
• git diff --check
• Scoped diff: 56 changed lines

Follow-up

Component extraction and stage-transition coverage are intentionally deferred to a separate Slice B.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
site	Ready	Preview	Aug 3, 2026 11:15pm

[github-actions]

drift trust

drift trust

• Trust Score: 73/100
• Merge Risk: MEDIUM
• Target: /home/runner/work/drift/drift

Diff signals

• Base ref: origin/master
• Diff status: IMPROVED
• Score delta: +0
• Issues: +1 new / -22 resolved
• Trust adjustment: +3 penalty / -20 bonus (net -17)

Top reasons

• Error-level issues: 8 error issue(s) increase merge volatility. (impact 22)
• Highest-risk file: /home/runner/work/drift/drift/site/src/App.jsx has hotspot risk 70/100. (impact 11)
• Maintenance hotspots: Maintenance risk is MEDIUM (36/100). (impact 9)
• Drift score pressure: Repository drift score is 4/100. (impact 2)

Fix priorities

• feat(review): drift review command with PR comment output #1 large-function (error, x6, effort: high) - Extract smaller functions to reduce review complexity.
• feat(score): repository quality score breakdown in scan/json #2 magic-number (info, x34, effort: low) - Address this rule in the highest-scored files first.
• feat(ai): ai_likelihood and files_suspected in AI output #3 unused-export (warning, x9, effort: medium) - Address this rule in the highest-scored files first.
• feat(architecture): configurable architecture rules in drift.config.ts #4 no-return-type (info, x14, effort: low) - Address this rule in the highest-scored files first.
• feat(map): drift map command to generate architecture.svg #5 large-file (error, x2, effort: high) - Split monolithic files by responsibility before merge.

drift review

drift review

⚠️ Drift regressed: +0 score and 1 new issue(s).

• Base ref: origin/master
• Score delta: +0
• New issues: 1
• Resolved issues: 22

File breakdown

• /home/runner/work/drift/drift/remotion/compositions/DriftReadmeDemo.tsx: 98 -> 35 (-63), +1 new / -22 resolved