## 1. Implementation
- [x] Add speaker identity reference storage and schema creation.
- [x] Replace transcript-count ordering and match candidate data with calculated reference counts.
- [x] Record meeting note/transcript references when final identity processing matches or creates an identity.
- [x] Append transcript audit lines when identities are named or merged.

## 2. Verification
- [x] Add/adjust behavior tests for references, calculated counts, naming audit lines, and merge audit lines.
- [x] Run focused speaker identity tests.
- [x] Run `openspec validate add-speaker-identity-references --strict`.