# ADR-015: Phase 5 Implementation Approach

## Status
Accepted

## Context
The development team requested clarification on two implementation decisions for Phase 5:
1. Version numbering progression from current 0.5.1
2. Git workflow for implementing Phase 5 features

These decisions needed to be documented to ensure consistent implementation and provide clear guidance for future phases.

## Decision

### Version Numbering
We will increment the version directly from 0.5.1 to 0.6.0, skipping any intermediate patch versions (e.g., 0.5.2).

### Git Workflow
We will use a feature branch named `feature/phase-5-rss-container` for all Phase 5 development work.

## Rationale

### Version Numbering Rationale
1. **Semantic Versioning Compliance**: Phase 5 introduces significant new functionality (RSS feeds and production containerization), which according to semantic versioning warrants a minor version bump (0.5.x → 0.6.0).

2. **Clean Version History**: Jumping directly to 0.6.0 avoids creating intermediate versions that don't represent meaningful release points.

3. **Feature Significance**: RSS feed generation and production containerization are substantial features that justify a full minor version increment.

4. **Project Standards**: This aligns with our versioning strategy documented in `/docs/standards/versioning-strategy.md` where minor versions indicate new features.

### Git Workflow Rationale
1. **Clean History**: Using a feature branch keeps the main branch stable and provides a clear history of when Phase 5 was integrated.

2. **Easier Rollback**: If issues are discovered, the entire Phase 5 implementation can be rolled back by reverting a single merge commit.

3. **Code Review**: A feature branch enables proper PR review before merging to main, ensuring quality control.

4. **Project Standards**: This follows our git branching strategy for larger features as documented in `/docs/standards/git-branching-strategy.md`.

5. **Testing Isolation**: All Phase 5 work can be tested in isolation before affecting the main branch.

## Consequences

### Positive Consequences
- Clear version progression that reflects feature significance
- Clean git history with logical grouping of related commits
- Ability to review Phase 5 as a cohesive unit
- Simplified rollback if needed
- Consistent with project standards

### Negative Consequences
- Feature branch may diverge from main if Phase 5 takes extended time (mitigated by regular rebasing)
- No intermediate release points during Phase 5 development

### Neutral Consequences
- Developers must remember to work on feature branch, not main
- Version 0.5.2 through 0.5.9 will be skipped in version history

## Alternatives Considered

### Version Numbering Alternatives
1. **Incremental Patches**: Create 0.5.2 for RSS, 0.5.3 for container, etc.
   - Rejected: Creates unnecessary version proliferation for work that is part of a single phase

2. **Jump to 1.0.0**: Mark Phase 5 completion as V1 release
   - Rejected: V1 requires Micropub implementation (Phase 6) per project requirements

### Git Workflow Alternatives
1. **Direct to Main**: Implement directly on main branch
   - Rejected: No isolation, harder rollback, messier history

2. **Multiple Feature Branches**: Separate branches for RSS and container
   - Rejected: These features are part of the same phase and should be reviewed together

3. **Long-lived Development Branch**: Create a `develop` branch
   - Rejected: Adds unnecessary complexity for a small project

## Implementation Notes

The developer should:
1. Create feature branch: `git checkout -b feature/phase-5-rss-container`
2. Update version in `starpunk/__init__.py` from `"0.5.1"` to `"0.6.0"` as first commit
3. Implement all Phase 5 features on this branch
4. Create PR when complete for review
5. Merge to main via PR
6. Tag release after merge: `git tag -a v0.6.0 -m "Release 0.6.0: RSS feed and production container"`

## References
- [Versioning Strategy](/home/phil/Projects/starpunk/docs/standards/versioning-strategy.md)
- [Git Branching Strategy](/home/phil/Projects/starpunk/docs/standards/git-branching-strategy.md)
- [Phase 5 Design](/home/phil/Projects/starpunk/docs/designs/phase-5-rss-and-container.md)
- [Phase 5 Quick Reference](/home/phil/Projects/starpunk/docs/designs/phase-5-quick-reference.md)

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**Date**: 2025-11-19
**Author**: StarPunk Architect
**Phase**: 5