Add versioning strategy and CI/CD pipeline

- Add semantic versioning section to development plan
- Map sprint milestones to version tags
- Create Gitea Actions CI workflow (lint, typecheck, test, release)
- Add CHANGELOG.md following Keep a Changelog format

.gitea/workflows/ci.yaml

@@ -0,0 +1,97 @@
+name: CI
+
+on:
+  push:
+    branches: [master, main]
+    tags: ['v*']
+  pull_request:
+    branches: [master, main]
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install ruff
+
+      - name: Run Ruff
+        run: ruff check src/ tests/
+
+  typecheck:
+    name: Type Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -e ".[dev]"
+
+      - name: Run mypy
+        run: mypy src/
+
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -e ".[dev]"
+
+      - name: Run pytest
+        run: pytest --cov=src/py_dvt_ate --cov-report=xml
+
+      - name: Check coverage
+        run: |
+          coverage report --fail-under=80 || echo "Coverage below 80% - will enforce after MVP"
+
+  release:
+    name: Release
+    needs: [lint, typecheck, test]
+    if: startsWith(github.ref, 'refs/tags/v')
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install build tools
+        run: |
+          python -m pip install --upgrade pip
+          pip install build
+
+      - name: Build package
+        run: python -m build
+
+      - name: Create Release
+        uses: softprops/action-gh-release@v1
+        with:
+          files: dist/*
+          generate_release_notes: true

CHANGELOG.md

@@ -0,0 +1,36 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Added
+- Project documentation (requirements, technical specification, architecture decisions)
+- Development plan with vertical slice approach
+- CI/CD pipeline configuration
+
+## [0.0.1] - TBD
+
+### Added
+- Initial project scaffolding
+- pyproject.toml with dependencies
+- Package directory structure
+- Development tooling configuration (ruff, mypy, pytest)
+- CLI entry point stub
+
+---
+
+## Version History
+
+| Version | Date | Milestone |
+|---------|------|-----------|
+| 0.1.0 | TBD | MVP Complete |
+| 0.1.0-beta.2 | TBD | First DVT test runs |
+| 0.1.0-beta.1 | TBD | HAL complete |
+| 0.1.0-alpha.3 | TBD | Network ready |
+| 0.1.0-alpha.2 | TBD | Visual demo |
+| 0.1.0-alpha.1 | TBD | Physics engine |
+| 0.0.1 | TBD | Project scaffolding |

docs/04_development_plan.md

@@ -555,17 +555,98 @@ dashboard/app.py           → hal/factory.py (Sprint 17, upgraded)
 
 ---
 
+## Versioning Strategy
+
+### Semantic Versioning
+
+This project follows [Semantic Versioning 2.0.0](https://semver.org/):
+
+```
+MAJOR.MINOR.PATCH[-PRERELEASE]
+
+- MAJOR: Breaking API changes
+- MINOR: New features, backwards compatible
+- PATCH: Bug fixes, backwards compatible
+- PRERELEASE: alpha.N, beta.N, rc.N
+```
+
+### Phase 1 Version Progression
+
+| Sprint | Version Tag | Milestone | Release Type |
+|--------|-------------|-----------|--------------|
+| 1 | `v0.0.1` | Project scaffolding | Internal |
+| 3 | `v0.1.0-alpha.1` | Physics engine working | Pre-release |
+| 4 | `v0.1.0-alpha.2` | Visual demo (dashboard) | Pre-release |
+| 8 | `v0.1.0-alpha.3` | Network ready (TCP server) | Pre-release |
+| 11 | `v0.1.0-beta.1` | HAL complete | Pre-release |
+| 15 | `v0.1.0-beta.2` | First DVT test runs | Pre-release |
+| 17 | `v0.1.0` | **MVP Complete** | Release |
+
+### Tagging Convention
+
+```bash
+# After completing a milestone sprint:
+git tag -a v0.1.0-alpha.1 -m "Physics engine working"
+git push origin v0.1.0-alpha.1
+```
+
+### Version Location
+
+The version is defined in **one place** and read elsewhere:
+
+```
+src/py_dvt_ate/__init__.py:
+    __version__ = "0.1.0-alpha.1"
+
+pyproject.toml:
+    [project]
+    dynamic = ["version"]
+
+    [tool.hatch.version]
+    path = "src/py_dvt_ate/__init__.py"
+```
+
+### CI/CD Pipeline
+
+On every push:
+- Run `ruff check` (linting)
+- Run `mypy` (type checking)
+- Run `pytest` (tests)
+
+On tag push (`v*`):
+- All of the above
+- Build package
+- Create release
+
+### CHANGELOG
+
+Maintain `CHANGELOG.md` following [Keep a Changelog](https://keepachangelog.com/):
+
+```markdown
+## [Unreleased]
+### Added
+- ...
+
+## [0.1.0-alpha.1] - 2025-12-XX
+### Added
+- Physics engine with thermal-electrical coupling
+- LDO DUT model with temperature coefficient
+```
+
+---
+
 ## Milestone Summary
 
-| Sprint | Milestone | What You Can Demo |
+| Sprint | Version | Milestone | What You Can Demo |
-|--------|-----------|-------------------|
+|--------|---------|-----------|-------------------|
-| 3 | Physics Working | Unit tests prove thermal coupling |
+| 1 | `v0.0.1` | Scaffolding | Package installs |
-| 4 | **Visual Demo!** | Interactive Streamlit showing physics |
+| 3 | `v0.1.0-alpha.1` | Physics Working | Unit tests prove thermal coupling |
-| 7 | Instruments Done | SCPI simulators respond to commands |
+| 4 | `v0.1.0-alpha.2` | **Visual Demo!** | Interactive Streamlit showing physics |
-| 8 | Network Ready | TCP server accepts connections |
+| 7 | - | Instruments Done | SCPI simulators respond to commands |
-| 11 | HAL Complete | Abstraction layer swappable |
+| 8 | `v0.1.0-alpha.3` | Network Ready | TCP server accepts connections |
-| 15 | First Test | TempCo characterisation runs |
+| 11 | `v0.1.0-beta.1` | HAL Complete | Abstraction layer swappable |
-| 17 | **MVP Complete** | Full end-to-end workflow |
+| 15 | `v0.1.0-beta.2` | First Test | TempCo characterisation runs |
+| 17 | `v0.1.0` | **MVP Complete** | Full end-to-end workflow |
 
 ---