get series

Return a macro TIME SERIES as clean rows (not prose) from the Economic Survey's structured Statistical Appendix / chart XLSX — e.g. GDP growth, fiscal deficit, WPI/CPI inflation, forex reserves, external debt. `indicator` matches the QUALIFIED name (table subject + indicator + geography) token-wise — e.g. "life expectancy female bihar" or "net state domestic product" (use list_indicators to discov