Extends SqliteTaskStore with full CRUD operations for:
- Table 8: canaries (upsert, get, list, delete)
- Table 9: canary_runs (insert with auto-prune to run_history_limit)
- Table 10: cdc_cursors (upsert, get, list by sink)
- Table 11: tenant_map (insert, get by BLOB key, delete)
- Table 12: rollover_policies (upsert, get, list, delete)
- Table 13: search_ui_config (upsert, get, delete)
- Table 14: admin_sessions (insert, get, revoke, delete_expired)
Key implementation details:
- prune_tasks uses subquery for LIMIT support (SQLite doesn't support LIMIT in DELETE)
- canary_runs auto-prune keeps only N most recent runs per canary_id
- tenant_map.api_key_hash is a 32-byte BLOB (raw sha256)
- admin_sessions has expires_at index for lazy eviction
- All bool fields stored as INTEGER (0/1) with conversion on read/write
Adds 12 comprehensive unit tests covering:
- CRUD round-trip for each table
- Auto-prune logic for canary_runs
- Nullable fields (tenant_map.group_id, admin_sessions.user_agent/source_ip)
- Composite PK behavior (cdc_cursors, canary_runs)
- prune_tasks batch deletion with status filter
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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