feat: initial scaffold and generator

- Complete project structure with directories for all target platforms
- Template system for CLI tools with color placeholder replacement
- Working generator that processes templates for 6 theme variants
- GitHub workflows for build, snapshots, commitlint, and cli-verify
- Installer and verifier scripts for CLI tool deployment
- Comprehensive documentation and specifications
- Biome 2.x linting and formatting setup
- Husky git hooks for pre-commit validation

.github/CODEOWNERS

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+# Global code ownership
+* @ivuorinen

.github/workflows/build.yml

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+name: Build
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20'
+        cache: 'npm'
+
+    - name: Install dependencies
+      run: npm ci
+
+    - name: Lint code
+      run: npm run lint
+
+    - name: Generate themes
+      run: npm run generate
+
+    - name: Validate output
+      run: npm run validate
+
+    - name: Check for uncommitted changes
+      run: |
+        if ! git diff --quiet; then
+          echo "Generated files have uncommitted changes!"
+          git diff
+          exit 1
+        fi

.github/workflows/cli-verify.yml

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+name: CLI Verify
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  cli-verify:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20'
+        cache: 'npm'
+
+    - name: Install dependencies
+      run: npm ci
+
+    - name: Generate themes
+      run: npm run generate
+
+    - name: Run installer
+      run: |
+        export HOME=$(mktemp -d)
+        ./cli/install.sh
+
+    - name: Run verifier
+      run: |
+        export HOME=$(mktemp -d)
+        ./cli/install.sh
+        ENGINE=docker ./verify/verify.sh

.github/workflows/commitlint.yml

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+name: Commitlint
+
+on:
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  commitlint:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20'
+        cache: 'npm'
+
+    - name: Install dependencies
+      run: npm ci
+
+    - name: Lint commit messages
+      run: npx commitlint --from HEAD~${{ github.event.pull_request.commits }} --to HEAD --verbose

.github/workflows/snapshots.yml

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+name: Snapshots
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  snapshots:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20'
+        cache: 'npm'
+
+    - name: Install dependencies
+      run: npm ci
+
+    - name: Install Playwright browsers
+      run: npx playwright install --with-deps
+
+    - name: Generate themes
+      run: npm run generate
+
+    - name: Run Playwright tests
+      run: npm run snapshots
+
+    - name: Upload snapshots
+      uses: actions/upload-artifact@v4
+      if: failure()
+      with:
+        name: playwright-report
+        path: playwright-report/
+        retention-days: 30