[KM-644] harden query path: grouped-select rule, int-date trends, sample decode, trace guard

/feat traceability (#11)

/fix validator and report (#10)

/fix analysis + report_inputs and storage update (#9)

/fix check and help tool (#8)

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)