The body is lean — concrete commands, threshold literals with file pointers, and a tight prohibitions list — without explaining concepts Claude already knows; every section earns its place.

Provides fully executable commands ('./scripts/failure-codifier-propose.sh --dry-run', 'cd go && go test ./internal/failurecodifier/... -count=1') plus exact file paths for the schema and core implementation, copy-paste ready.

The core propose→test sequence is present, but the validation/feedback checkpoints (evidence-ref checklist, confidence threshold verification) live only in the referenced promotion-workflow.md rather than inline, leaving the body's own workflow checkpoints implicit.

A concise overview with a clearly signaled 参照 section pointing one level deep to the real references/promotion-workflow.md (verified present), plus schema and core paths; content is appropriately split.

Lists multiple concrete actions — 'Extract recurring failure patterns', 'emit failure-rule.v1 proposals with confidence scores', and proposal-only SSOT promotion to specific files (patterns.md/decisions.md).

Explicitly answers both what (extract/emit proposals with confidence scores) and when (a 'Use when...' clause with concrete triggers), satisfying the top completeness anchor.

'Use when user mentions failure codifier, failure patterns, self-learning loop, codify failures, or failure-rule proposals' gives natural keyword coverage a user would actually say.

A clear niche (read-only failure-pattern codification) is reinforced by negative triggers — 'Do NOT load for: direct SSOT edits, auto-promotion, or implementation unrelated to failure analysis' — minimizing misfires.