git:20260912.938fe03 to git:20260915.12d6015

10 added, 2 removed. Audit A to A.

# maintainable-code
- Use this skill passively whenever writing, editing, refactoring, reviewing, or planning code. It keeps agent-generated code understandable, decomposed around stable responsibilities, and aligned with local repository patterns.
+ Use this skill passively whenever writing, editing, refactoring, reviewing, or planning code. It keeps agent-generated code understandable, decomposed around stable responsibilities, resilient to production failures (retries, duplicates, stuck work), replaceable in tests, and aligned with local repository patterns.
Keep `SKILL.md` authoritative. The wrapper files only describe packaging.
Core references:
- `references/principles.md`
- `references/decomposition.md`
- `references/commenting.md`
- `references/review-rubric.md`
- `references/implementation-plans.md`
- `references/guardrails-and-quality-gates.md`
+ - `references/resilience.md`
+ - `references/jobs-and-queues.md`
+ - `references/distributed-systems.md`
+ - `references/observability.md`
+ - `references/dependency-boundaries.md`
+ - `references/test-doubles.md`
- `references/gotchas.md`
- Primary helper:
+ Primary helpers:
- `scripts/analyze_maintainability.py`
+ - `scripts/analyze_app_resilience.py`
+ - `scripts/analyze_mockability.py`