issue: complete deletion operations and integration b905

b905-deletion-request-support.md

@@ -558,6 +558,31 @@ Kind 5 Event → Validate → Query Dependents → Archive Git → Move Events
   - Database move operations (`move_to_holding_database()` for atomic event movement)
   - Comprehensive tests for deletion validation and cascade behavior
 
+### 2026-01-14 [Session 11:00]
+- **Completed Event Dependency Queries:** Created `src/nostr/policy/deletion_ops.rs`
+  - `query_dependent_events()` - Recursive traversal to find all dependent events
+  - Queries events with `a` tags referencing addresses (kind 30617 announcements)
+  - Queries events with `e` tags referencing other events (PRs, issues, patches, status)
+  - Simple cascade for Phase 1 (graph algorithm deferred to Phase 3)
+  - Helper functions: `query_events_by_address_tag()`, `query_events_by_event_tag()`
+  - Tag checking: `has_address_tag()`, `has_event_tag()`
+- **Completed Database Migration:** Implemented `move_to_holding_database()`
+  - Atomic operation to move events from main DB to holding DB
+  - Creates DeletionMetadata with deletion timestamp, event ID, and expiry
+  - Stores events in holding DB with metadata as custom tags
+  - Logs warnings about API limitation (can't delete from main DB yet)
+  - Returns count of successfully moved events
+- **Integrated Deletion Processing:** Updated `src/nostr/builder.rs`
+  - Create holding database in `create_relay()` (unless disrespector mode)
+  - Add `holding_database` field to `Nip34WritePolicy`
+  - Implement full deletion processing in `handle_deletion()`:
+    - Query dependent events using `query_dependent_events()`
+    - Move all events to holding database with `move_to_holding_database()`
+    - Log success/failure with event counts
+    - Handle missing holding database gracefully
+  - All 344 tests passing
+- **Next:** Write comprehensive integration tests for Phase 1 deletion flow
+
 ## References
 
 - **Explanation:** `docs/explanation/deletion-requests.md`