Add complete infrastructure for ingesting GitLab Resource Events
(state, label, milestone) into local SQLite tables. This enables
temporal queries (timeline, file-history, trace) in later gates.
- Add migration 011: resource_state/label/milestone_events tables,
entity_references table, pending_dependent_fetches queue
- Add 6 serde types for GitLab Resource Events API responses
- Add fetchResourceEvents config flag with --no-events CLI override
- Add fetch_all_pages<T> generic paginator and 6 API endpoint methods
- Add DB upsert functions with savepoint atomicity (events_db.rs)
- Add dependent fetch queue with exponential backoff (dependent_queue.rs)
- Add 'lore count events' command with human table and robot JSON output
- Extend 'lore stats --check' with event FK integrity and queue health
- Add 8 unit tests for resource event type deserialization
Closes: bd-hu3, bd-2e8, bd-2fm, bd-sqw, bd-1uc, bd-tir, bd-3sh, bd-1m8
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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