Aleksey Shakhmatov
83f204816a
INTERVAL handling
- pg_value_to_json now decodes PG INTERVAL via PgInterval and renders
it psql-style: `1 year 2 mons 3 days 04:05:06`. Previously
AVG(timestamp - timestamp) and similar interval-returning queries
showed `<unsupported type: INTERVAL>` in chat results.
- 7 unit tests covering zero, days-only, mixed, negative, microsecond
fraction, and the singular/plural unit rules.
Compact reliability
- Sharper system prompt: explicitly instructs plain text starting with
`-`, no JSON, no fences, no field names. qwen3-coder is heavily
trained on the agent JSON protocol and was sometimes returning
`{"action":"final","text":"..."}` even for the compact prompt.
- New clean_summary helper strips ``` fences (with or without lang
identifier) and extracts the underlying string from a JSON envelope
if the model still wraps the answer (looks for text/summary/content/
answer/output keys). 6 unit tests.
- Frontend useChat.compact: success/no-op/error toasts via sonner so
the user sees what happened. "Nothing to compact" appears when there
is no older history beyond the last user turn (previously silent).
Verification: cargo test --lib 66 pass (+13), tsc clean, vitest 20
pass.