a733390462
- Added issue:// and pr:// URL handlers for single lookups and list queries with query filters. - Added a SQLite-backed GitHub cache with soft/hard TTLs, stale hits, and background stale refresh. - Removed issue_view and pr_view tool operations, inputs, and docs, requiring reads via issue:// and pr:// URLs. - Added github-cache and issue-pr-protocol tests with temporary cache DB setup and OMP_GITHUB_CACHE_DB teardown.