Add auto-increment version and release workflow

- New release.yml: bumps patch version, commits with skip-ci marker, tags, creates Gitea release
- Build workflows now trigger on v* tags only (not branch push)
- Simplified upload steps: use tag directly, retry loop for release lookup
- Fix macOS: install jq if missing
- Sync python/pyproject.toml version to 0.2.0

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

python/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "voice-to-notes"
-version = "0.1.0"
+version = "0.2.0"
 description = "Python sidecar for Voice to Notes — transcription, diarization, and AI services"
 requires-python = ">=3.11"
 license = "MIT"