Summary

• Adds version-bump.yml — manually triggered workflow that bumps the version across pyproject.toml, frontend/package.json, app/package.json + their lock files, then opens a release PR
• Adds tag-on-merge.yml — automatically creates and pushes a git tag when a release PR merges to main, triggering the existing Electron and Docker build workflows

How it works

workflow_dispatch("0.2.0")
  → version-bump.yml updates 6 files, opens PR "Release v0.2.0"
    → lint.yml + test.yml run on PR (existing CI)
      → Developer reviews & merges
        → tag-on-merge.yml creates + pushes tag v0.2.0
          → build-electron.yml builds Windows .exe + GitHub Release
          → docker-build.yml builds Docker image + pushes to Docker Hub

Test plan

• Trigger version-bump.yml manually with a test version and verify the PR is created with correct changes to all 6 files
• Merge the PR and verify the tag is created and downstream workflows trigger

🤖 Generated with Claude Code