changelog

Port provenance: adapted from the pinned upstream source at 984023ddac0d5e27624f2baacde6105e45de375f under MIT; see the repository parity ledger for the exact path and blob.

Phase 1: Parse Arguments

Read the argument for the target version or sprint number. If a version is given, use the corresponding git tag. If a sprint number is given, use the sprint date range.

Verify the repository is initialized: run git rev-parse --is-inside-work-tree to confirm git is available. If not a git repo, inform the user and abort gracefully.

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Phase 2: Gather Change Data

Read the git log since the last tag or release:

git log --oneline [last-tag]..HEAD

If no tags exist, read the full log or a reasonable recent range (last 100 commits).

Read sprint reports from production/sprints/ for the relevant period to understand planned work and context behind changes.

Read completed design documents from design/gdd/ for any new features implemented during this period.

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Phase 3: Categorize Changes

Categorize every change into one of these categories:

• New Features: Entirely new gameplay systems, modes, or content
• Improvements: Enhancements to existing features, UX improvements, performance gains
• Bug Fixes: Corrections to broken behavior
• Balance Changes: Tuning of gameplay values, difficulty, economy
• Known Issues: Issues the team is aware of but have not yet resolved
• Miscellaneous: Changes that do not fit the above categories, or commits whose messages are too vague to classify confidently

For each commit, check whether the message contains a task ID or story reference (e.g. [STORY-123], TR-, #NNN, or similar). Count commits that lack any task reference and include this count in the Phase 4 Metrics section as: Commits without task reference: [N].

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Phase 4: Generate Internal Changelog

# Internal Changelog: [Version]
Date: [Date]
Sprint(s): [Sprint numbers covered]
Commits: [Count] ([first-hash]..[last-hash])

## New Features
- [Feature Name] -- [Technical description, affected systems]
  - Commits: [hash1], [hash2]
  - Owner: [who implemented it]
  - Design doc: [link if applicable]

## Improvements
- [Improvement] -- [What changed technically and why]
  - Commits: [hashes]
  - Owner: [who]

## Bug Fixes
- [BUG-ID] [Description of bug and root cause]
  - Fix: [What was changed]
  - Commits: [hashes]
  - Owner: [who]

## Balance Changes
- [What was tuned] -- [Old value -> New value] -- [Design intent]
  - Owner: [who]

## Technical Debt / Refactoring
- [What was cleaned up and why]
  - Commits: [hashes]

## Miscellaneous
- [Change that didn't fit other categories, or vague commit message]
  - Commits: [hashes]

## Known Issues
- [Issue description] -- [Severity] -- [ETA for fix if known]

## Metrics
- Total commits: [N]
- Files changed: [N]
- Lines added: [N]
- Lines removed: [N]
- Commits without task reference: [N]