var - backtest related and spy runbook

workflows/backtest-strategy/shared/data/README.md

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+# shared/data/
+
+Holds the backtest cache (SQLite) built by stage 02_fetch_cache.
+
+- `backtest_cache.sqlite3` — keyed by (contract, timespan, window). Cache-first:
+  existing rows are never re-pulled from TTG data servers.
+- This folder may grow large. Cap discipline lives in `_config/risk-params.md`.
+- Delete the .sqlite3 file to force a full re-pull (stage 02 will rebuild it).