Update CI and publish workflows to match Rust SDK pattern

CI: add package build verification job alongside lint, typecheck, and
test matrix. Publish: add verify step (lint + typecheck + test) before
PyPI publish, and create GitHub Release with generated notes on tag push.

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

Author: mivertowski

.github/workflows/ci.yml

@@ -0,0 +1,49 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: astral-sh/setup-uv@v4
+      - run: uv sync
+      - run: uv run ruff check src/ tests/
+      - run: uv run ruff format --check src/ tests/
+
+  typecheck:
+    name: Typecheck
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: astral-sh/setup-uv@v4
+      - run: uv sync
+      - run: uv run mypy src/
+
+  test:
+    name: Test (Python ${{ matrix.python-version }})
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.11", "3.12", "3.13"]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: astral-sh/setup-uv@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - run: uv sync
+      - run: uv run pytest --cov=vynco --cov-report=term-missing
+
+  package:
+    name: Package
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: astral-sh/setup-uv@v4
+      - run: uv build

.github/workflows/publish.yml

@@ -0,0 +1,49 @@
+name: Publish to PyPI
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  id-token: write
+  contents: write
+
+jobs:
+  verify:
+    name: Verify
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: astral-sh/setup-uv@v4
+      - run: uv sync
+      - run: uv run ruff check src/ tests/
+      - run: uv run ruff format --check src/ tests/
+      - run: uv run mypy src/
+      - run: uv run pytest
+      - run: uv build
+
+  publish:
+    name: Publish
+    needs: verify
+    runs-on: ubuntu-latest
+    environment: pypi
+    steps:
+      - uses: actions/checkout@v4
+      - uses: astral-sh/setup-uv@v4
+      - run: uv build
+      - uses: pypa/gh-action-pypi-publish@release/v1
+
+  release:
+    name: GitHub Release
+    needs: publish
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+      - name: Create GitHub Release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          TAG_NAME: ${{ github.ref_name }}
+        run: gh release create "$TAG_NAME" --generate-notes --title "$TAG_NAME"