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Author SHA1 Message Date
623cff0d76 feat(06-01): add conversation and message CRUD methods with integration tests
- CreateConversation, AddMessage, GetConversation, ListConversations on *Store
- ErrNotFound sentinel for unknown conversation IDs
- Message, Conversation, ConversationSummary types
- LIMIT 100 soft guard on ListConversations (T-06-01-04)
- Integration tests cover full round-trip, invalid role, ErrNotFound, ordering
2026-04-10 07:31:12 +00:00