feat!: v0.2.0 — PyPI-ready, interception tests, strict linting

PyPI-ready metadata (donglora-mux), full classifiers, URLs.
Fixed dependency path to client-py. Added 11 interception tests
ported from the Rust mux (SetConfig locking, StartRx/StopRx
refcounting). GitHub Actions CI. Strict ruff linting.

Applied contextlib.suppress per SIM105, collapsed nested ifs per
SIM102.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/ci.yml

@@ -0,0 +1,42 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+    tags: ["v*"]
+  pull_request:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: astral-sh/setup-uv@v6
+      - run: uv run ruff check .
+      - run: uv run ruff format --check .
+
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: astral-sh/setup-uv@v6
+        with:
+          python-version: ${{ matrix.python-version }}
+      - run: uv sync
+      - run: uv run pytest -v
+
+  publish:
+    needs: [lint, test]
+    if: startsWith(github.ref, 'refs/tags/v')
+    runs-on: ubuntu-latest
+    environment: pypi
+    permissions:
+      id-token: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: astral-sh/setup-uv@v6
+      - run: uv build
+      - uses: pypa/gh-action-pypi-publish@release/v1