chore: import upstream snapshot with attribution

.github/workflows/skill-optimize-apply.yml

@@ -0,0 +1,25 @@
+# Apply Skill Optimization — triggered when a contributor comments /apply-optimize on a PR.
+# Commits the AI-suggested SKILL.md improvements from the review step directly to the branch.
+# Docs: https://github.com/tesslio/skill-review-and-optimize
+name: Apply Skill Optimization
+
+on:
+  issue_comment:
+    types: [created]
+
+jobs:
+  apply:
+    if: >
+      github.event.issue.pull_request &&
+      contains(github.event.comment.body, '/apply-optimize')
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: tesslio/skill-review-and-optimize@bff9490027d60847df6494fdac7dccfb3ad82948
+        with:
+          mode: apply

.github/workflows/skill-review.yml

@@ -0,0 +1,26 @@
+# Tessl Skill Review & Optimize — runs on PRs that change any SKILL.md.
+# Posts scores and AI-suggested improvements as a single PR comment.
+# Contributors can comment /apply-optimize to commit the suggestions automatically.
+# Docs: https://github.com/tesslio/skill-review-and-optimize
+name: Tessl Skill Review & Optimize
+
+on:
+  pull_request:
+    branches: [master]
+    paths:
+      - "**/SKILL.md"
+
+jobs:
+  review:
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+      contents: read
+    steps:
+      - uses: actions/checkout@v4
+      - uses: tesslio/skill-review-and-optimize@bff9490027d60847df6494fdac7dccfb3ad82948
+        with:
+          optimize: true
+          tessl-token: ${{ secrets.TESSL_API_TOKEN }}
+          # Optional quality gate (off by default):
+          # fail-threshold: 70

.github/workflows/tests.yml

@@ -0,0 +1,64 @@
+# Tests: runs the pytest suite on Linux and Windows plus the Pi extension
+# vitest suite on every PR and push to master.
+# The pytest suite also runs scripts/sync-ide-folders.py --verify via
+# tests/test_canonical_script_sync.py, so cross-copy parity is covered.
+name: Tests
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  pytest:
+    name: pytest (${{ matrix.os }})
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+      - name: Install test dependencies
+        # pyyaml is optional at test time; without it the YAML frontmatter
+        # test in tests/test_skill_frontmatter_valid.py silently skips.
+        run: python -m pip install pytest pyyaml
+      - name: Assert sh is available
+        # Many hook tests guard on shutil.which("sh") and skip when absent.
+        # Fail loudly instead of silently losing coverage (Git Bash provides
+        # sh.exe on windows-latest).
+        run: python -c "import shutil, sys; sys.exit(0 if shutil.which('sh') else 1)"
+      - name: Run pytest
+        run: python -m pytest tests/ -q
+
+  vitest:
+    name: vitest (Pi extension)
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    defaults:
+      run:
+        working-directory: .pi/skills/planning-with-files/extensions/planning-with-files
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "22"
+          cache: npm
+          cache-dependency-path: .pi/skills/planning-with-files/extensions/planning-with-files/package-lock.json
+      - name: Install dependencies
+        run: npm ci --no-audit --no-fund
+      - name: Run vitest
+        run: npm test