diagnose

Bundle a redacted, support-grade snapshot of the current nyann state for inclusion in a bug report or support request. Combines explain-state + doctor + git config (token-redacted) + installed hook contents + nyann user-config (token-redacted) + check-prereqs into a single JSON or human-readable summary. TRIGGER when the user says "nyann is broken", "nyann diagnose", "diagnose nyann", "diagnose this repo", "support bundle", "what's wrong with nyann", "help me file a bug report", "what should I include in a nyann bug report", "/nyann:diagnose". Do NOT trigger on "is this repo healthy" — that's `doctor` (read-only audit). Do NOT trigger on "what does nyann see here" — that's `explain-state` (lighter snapshot, no health, no hook contents). Do NOT trigger on "fix this repo" — that's `retrofit`.

适合你，如果使用 nyann 工具链时遇到问题需要提交详细诊断信息。