[NOTICKET] cleanup PR: wire ChatHandler, drop Phase 1 remnants, implement catalog rebuild

[KM-556] move parquet_service from knowledge/ to storage/

[KM-438][KM-439] Improve Retrieval and Querying feature (#15)

Merge dev_new to main (improve retriever and add querying) (#13)

[KM-436][KM-437] add and modify for database and document pipeline (#3)

[KM-467] [DED][AI] Orchestration Agent - Init