Allow Kingdee token requests to be built from app key, app secret, configurable field names, optional timestamp fields, and extra JSON. Keep raw KINGDEE_TOKEN_BODY_JSON as an advanced override with current-time placeholders.
Validation: python3 -m unittest discover -v; python3 -m compileall obsidian_wiki tests; git diff --check.
Add a structured business facts SQLite layer for Kingdee sales orders, with fixed-template query commands for monthly order counts, sales amount, top customers, and customer trend data.
Update README, SETUP, and developer docs to describe configuration, sync commands, query examples, and the boundary between structured facts and wiki ingest.
Validation: python3 -m unittest discover -v