diagnose-logs

Runs a structured diagnosis workflow when the user provides logs that contain an error or unexpected behavior. States one or more hypotheses for the failure, investigates relevant files (schema, config, source), plans and implements a fix for the primary hypothesis, and verifies the fix. Use when the user shares terminal output with an error, pastes failed command output, provides application/server logs, shares build or CI output, or asks to diagnose any log-based failure.