fix(bot): Phase 2.5 bounded trackNowPlaying state

[LucasSantana-Dev]

Summary

• Updated songInfoMessages LRU cache: max 500 → 5000, TTL 4h → 30 min
• Updated lastFmTrackStartTime LRU cache: max 500 → 5000, TTL 4h → 30 min
• Aligns with Phase 2.2 pattern (PR fix(bot): Phase 2.2 LRU+TTL on duplicate-detection caches #672) for consistent memory bounding

Pattern (Option A: LRU+TTL)

Increases per-guild state limits to 5000 entries (from 500) with aggressive 30-minute expiration. Both caches store transient metadata:

• songInfoMessages: now-playing message ID/channel (expires if guild leaves or message is deleted)
• lastFmTrackStartTime: scrobble timestamp (expires after track completes)

30-minute TTL is conservative since typical tracks last 3-5 minutes.

Tests

✅ All 2660 tests passed
✅ Type checking: no errors
✅ Linting: no errors

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Project	Deployment	Actions	Updated (UTC)
lucky	Ready	Preview, Comment	Apr 17, 2026 1:51am

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 8e2faaab-6e4b-43e8-9a50-cef24c943993

📥 Commits

Reviewing files that changed from the base of the PR and between b095e20 and 3301f65.

📒 Files selected for processing (1)

• packages/bot/src/handlers/player/trackNowPlaying.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/phase-2-5-now-playing-state

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[LucasSantana-Dev]

Superseded by consolidated #676 (Phase 2 memory hygiene bundle).

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud