Ilia Mashkov
2bb43797f0
refactor: extract magic constants — wave 3 (font lifecycle)
Promote font-loading scheduling and lifecycle tunables to named
module-level constants:
- comparisonStore: FONT_READY_FALLBACK_MS (1000ms) — UI unblock safety net
- fontLifecycleManager:
- PURGE_INTERVAL_MS (60000) — periodic eviction sweep
- IDLE_CALLBACK_TIMEOUT_MS (150) — requestIdleCallback timeout
- SCHEDULE_FALLBACK_MS (16) — setTimeout fallback (~60fps)
- YIELD_INTERVAL_MS (8) — parse-loop yield budget for non-Chromium
- CRITICAL_FONT_WEIGHTS ([400, 700]) — data-saver allowlist
- FontEvictionPolicy: DEFAULT_FONT_TTL_MS (5 minutes)
- FontLoadQueue: FONT_LOAD_MAX_RETRIES (3)
No behavior changes — values preserved exactly. Class-private fields
that mirrored these constants are removed in favor of module scope.