/fix infer FKs for FK-less dedorch catalog + log repr(e) in db executor

feat/Knowledge & Data Tools (#3)

feat/Planner Agent (#2)

feat/Catalog Retrieval System (#1)

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

Make a query for tabular (XLSX and CSV) (#14)

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