Phase 2 of fixing import failure on missing parent issues (bd-d19a).
Implemented:
- TryResurrectParent: searches JSONL history for deleted parents
- TryResurrectParentChain: recursively resurrects entire parent chains
- Creates tombstones (status=closed) to preserve hierarchical structure
- Modified EnsureIDs and CreateIssue to call resurrection before validation
When importing a child issue with missing parent:
1. Searches .beads/issues.jsonl for parent in git history
2. If found, creates tombstone with status=closed
3. Preserves original title and metadata
4. Appends original description to tombstone
5. Copies dependencies if targets exist
This allows imports to proceed even when parents were deleted,
enabling multi-repo workflows and normal database hygiene operations.
Part of bd-d19a (fix import failure on missing parents).
Amp-Thread-ID: https://ampcode.com/threads/T-a1c9e824-885e-40ce-a179-148cf39c7e64
Co-authored-by: Amp <amp@ampcode.com>
- Created ids.go with ValidateIssueIDPrefix, GenerateIssueID, EnsureIDs
- Created issues.go with insertIssue/insertIssues helpers
- Created events_helpers.go with recordCreatedEvent/recordCreatedEvents
- Created dirty_helpers.go with markDirty/markDirtyBatch
- Refactored sqlite.go and batch_ops.go to use new helpers
- Removed duplicate code from hash_ids.go
Amp-Thread-ID: https://ampcode.com/threads/T-b1ab5a16-96de-4e4d-b255-3617055a89eb
Co-authored-by: Amp <amp@ampcode.com>
