Aleksey Shakhmatov
93e526af72
Two changes that together kill the "prompt is too long: 1991577 tokens" crash on large Greenplum catalogs. 1. Overview table cap (build_overview_postgres): The agent re-injects the full overview into the system prompt every turn. On a multi-thousand-table catalog (typical for GP data lakes) this was megabytes per call and quickly overran even Kimi-K2's 256K window. Now we list at most 400 tables and replace the rest with per-schema counts plus a hint to call list_tables for specifics. 2. Friendly Fireworks-400 rewrite: Detect "prompt is too long" / "maximum context length" in the Fireworks 400 body and turn it into an actionable message asking the user to /compact, instead of leaking raw API JSON to the chat.