Quality feedback integration: TestQualityTracker_InfluencesArmSelection
verifies that 5 successes vs 5 failures tips Router.Select() to the
high-quality arm once EMA has enough observations. Companion test
confirms heuristic fallback below minObservations.
Coordinator tests expanded from 2 → 5: added guidance content check
(parallel/serial/synthesize present), false-positive table extended with
7 cases including the reordered keywords from the previous fix.
Agent tool suite: tool interface contracts for all four tools (Name,
Description, Parameters validity, IsReadOnly). Extracted duplicated
2000-char truncation into truncateOutput() helper (format.go), removing
the inline copies in agent.go and batch.go. Four boundary tests cover
empty, short, exact-max, and over-max cases.