chore: Add pre-commit checks to CI workflow

[rogermt]

Description

Add global lint and type check job to forgesyte-plugins CI workflow that runs on ALL code changes.

Implementation

Add the following job to .github/workflows/forgesyte-plugins-ci.yml:

# ---------------------------------------------------------
# Global Lint + Type Check (runs on ALL code changes)
# ---------------------------------------------------------
global_quality:
  name: Global Lint & Type Check
  runs-on: ubuntu-latest

  steps:
    - name: Checkout repository
      uses: actions/checkout@v4

    - name: Set up Python
      uses: actions/setup-python@v5
      with:
        python-version: "3.11"

    - name: Install uv
      run: pip install uv

    - name: Install root dev dependencies
      run: uv pip install --system -e ".[dev]"

    - name: Install Black
      run: uv pip install --system black

    - name: Install pre-commit
      run: uv pip install --system pre-commit

    - name: Run pre-commit (consistency check)
      run: uv run pre-commit run --all-files --show-diff-on-failure

    - name: Run ruff on entire repo
      run: uv run ruff check . --exit-non-zero-on-fix

    - name: Run Black (check only)
      run: uv run black . --check --diff

    - name: Run mypy on entire repo
      run: |
        export MYPYPATH=.
        uv run mypy . --config-file mypy.ini

Rationale

Enforces consistent code quality across all commits via CI, catching lint/type errors before merge.

Related

Issue #104 - GPU video input validation