v1.2.3 — Engineering Quality

• Add Evi (伊维), a clean British Shorthair mascot identity system for project branding.
• Restore and validate automatic cleanup of successful release/v<VERSION> trigger branches.
• Keep canonical mascot artwork as a required repository asset while excluding branding from the portable Skill runtime package.

v1.2.2 — Engineering Quality

• Give GitHub CLI an explicit repository context in the checkout-free publish job so Release creation no longer depends on local Git repository discovery.

v1.2.1 — Engineering Quality

• Fix missing-tag detection so GitHub CLI 404 response bodies cannot be misclassified as an existing tag SHA.
• Keep privileged GitHub Release publication checkout-free by removing redundant local-Git tag verification after the workflow has already established the remote tag invariant.

v1.2.0 — Engineering Quality

• Repair the release trust chain and make GitHub Release publication safely rerunnable without moving published tags.
• Harden the GitHub Actions supply chain with immutable action SHAs, Dependabot updates, bounded execution, least-privilege release jobs, artifact round-trip verification, and signed build provenance.
• Make repository-check execution explicit about trust: discovery remains read-only, while execution requires --run --trust-repository.
• Replace prose-only eval fixtures with 14 executable miniature-repository scenarios, deterministic post-agent checks, hidden-rubric staging, machine-readable results, and strict evidence semantics.
• Add current Codex, ChatGPT, and Claude Code metadata/guidance plus native Codex and Claude Code eval adapters with credential, home-directory, and Skill-integrity isolation.
• Add repository governance: CODEOWNERS, structured Issue Forms, Code of Conduct, security disclosure routing, active branch/tag rulesets, required CI checks, Discussions, and squash-only merge policy.
• Rework the README around quick start, concrete before/after behavior, searchable use cases, and inspectable evidence; add a maintained distribution/discovery playbook.
• Add a guarded release/v<VERSION> automation path that can create the immutable release tag only from the exact current main commit and removes its trigger branch after successful publication.

v1.1.0 — Distribution Integrity & Release Engineering

• Add deterministic skill packaging with an internal SHA-256 manifest and external archive checksum.
• Add release-readiness checks that keep VERSION, changelog, tag names, repository structure, and package contents consistent.
• Add automated tagged-release workflow with generated release notes and packaged artifacts.
• Add a maintained compatibility matrix and release engineering playbook.
• Add an evaluation schema and expand behavioral coverage for dependency changes, flaky tests, migrations, generated code, error handling, and scope expansion.
• Expand language guidance to cover .NET, Swift, Dart/Flutter, C/C++, Ruby, and PHP.
• Extend CI with package construction and artifact verification.

v1.0.0 — Engineering Quality Playbook

• Establish the stable engineering-quality skill contract.
• Add focused workflows for feature work, defect fixes, refactoring, review, debugging, and performance.
• Add references for design, verification, testing, security, compatibility, concurrency, and language conventions.
• Add project-check discovery, repository validation, unit tests, evaluation fixtures, and continuous integration.
• Add the technical architecture diagram and deployment guidance for Codex, Claude Code, and ChatGPT.