KEY_FILES.md: new src/core/sync-failure-ledger.ts entry (bounded auto-skip
state machine, decideGateAction/decideSyncFailureSeverity/applySyncFailureGate,
GBRAIN_SYNC_AUTOSKIP_AFTER); update sync.ts (failure store moved to ledger,
re-exported), doctor.ts (sync_failures severity via shared rule on both
surfaces), markdown.ts (coerceFrontmatterString), import.ts (managedBookmark).
live-sync.md: poison-file auto-skip tricky-spot. Regenerated llms-full.txt.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>