Improve Structured improvement pass grounded in what was observed during this session. Principles (Always Active) - Every suggestion must cite a specific observation — file path, error seen, pattern noticed, or behavior verified. "I saw X" beats "common practice suggests Y." - Distinguish grounded suggestions (observed evidence) from speculative ones (general knowledge). Mark speculative suggestions explicitly. - Prioritize by impact to the user, not by ease of description. - Do not suggest improvements that would change public API contracts, auth boundaries, or data schemas without flagging…