# Restore Master Branch to v0.1.64

## Overview

This pull request restores the master branch to the stable release v0.1.64 without rewriting Git history. All intervening commits are preserved for audit purposes, and when merged, master will contain a new merge commit that effectively reverts the code state to v0.1.64.

## Rationale

**Goal:** Rollback the master branch to the stable, tagged release v0.1.64.

**Why this approach:**
- Preserves all Git history for audit purposes
- Avoids force-push and history rewriting
- Creates a clear, reversible rollback point
- Maintains transparency about what changed and why

## Current State

- **v0.1.64 Tag Commit:** `b8999965911e094bd11916ce018783e9af3ee3ee`
- **Current Master Commit:** `dd6a600ff49cce3f3e77d53d64af35ee979cff0f`
- **Branch:** `restore-v0.1.64` (created from tag v0.1.64)

## Changes Overview

This PR will revert the following changes made to master after v0.1.64:

**Statistics:**
- **291 files** would be affected
- **56,135 insertions** would be removed
- **13 files** directly changed from the intervening work

**Key changes being reverted:**
- Multiple GitHub Actions workflows (CI/CD, testing, deployment)
- Infrastructure as Code (Terraform) configurations
- Extensive test suite additions
- Documentation files (markdown summaries, guides)
- Core aimodelshare library enhancements
- Moral compass application implementations
- Gradio integration and smoke tests
- Lambda layers and containerization improvements

## Verification Instructions for Reviewers

### A. Confirm the Tag Commit

```bash
git rev-list -n 1 v0.1.64
# Expected output: b8999965911e094bd11916ce018783e9af3ee3ee
```

### B. Simulate the Merge Locally

```bash
# Fetch latest changes
git fetch origin --tags

# Create test branch from current master
git checkout master
git pull origin master
git checkout -b test-restore origin/master

# Merge the restore branch (no-ff to preserve history)
git merge --no-ff origin/restore-v0.1.64

# Verify the result matches v0.1.64 exactly
git diff v0.1.64
# Expected output: Should be empty (no differences)
```

### C. Validate the Rollback

After merging locally in your test branch:

1. **Run test suite** (if applicable):
   ```bash
   # Example commands - adjust based on project structure
   python -m pytest tests/
   ```

2. **Run linters** (if applicable):
   ```bash
   # Example commands
   flake8 aimodelshare/
   pylint aimodelshare/
   ```

3. **Build the package** (if applicable):
   ```bash
   python setup.py build
   # or
   pip install -e .
   ```

4. **Verify no unexpected differences**:
   ```bash
   git diff v0.1.64
   # Should still be empty
   ```

## Conflict Handling Strategy

**Expected conflicts:** Unlikely, as this branch is a clean checkout from v0.1.64.

**If conflicts occur:**
- Choose the version from v0.1.64 by default
- Preserve only clearly necessary hotfixes that were applied after v0.1.64
- Document any kept deviations explicitly in the merge commit message
- Update this PR description to list preserved changes

## Post-Merge Tasks

After this PR is successfully merged into master:

1. **Tag the rollback point** (optional but recommended):
   ```bash
   git tag -a rollback-v0.1.64-$(date +%Y%m%d) -m "Rollback master to v0.1.64"
   git push origin rollback-v0.1.64-$(date +%Y%m%d)
   ```

2. **Notify stakeholders:**
   - Development team
   - QA team
   - Any downstream consumers of the master branch

3. **Update documentation:**
   - Add note to CHANGELOG about the rollback
   - Update any README sections that reference newer features

4. **Review deployment pipelines:**
   - Ensure CI/CD pipelines are compatible with v0.1.64 code
   - Update deployment configurations if necessary

5. **Plan forward:**
   - Determine which features from the reverted commits should be re-introduced
   - Create a roadmap for controlled reintegration

## Merge Strategy Recommendation

**Recommended:** Merge with `--no-ff` (no fast-forward) to preserve all history and create an explicit merge commit.

```bash
git merge --no-ff restore-v0.1.64 -m "Restore master to stable release v0.1.64"
```

This creates a clear marker in the Git history showing when the rollback occurred.

## Risk Assessment

**Low Risk:**
- This is a clean revert to a known stable state
- No history is being rewritten
- The operation is reversible if needed

**Mitigation:**
- All reverted code remains in Git history
- Can create a recovery branch before merging if desired:
  ```bash
  git branch pre-rollback-backup origin/master
  ```

## Checklist for Merge Approval

- [ ] Verified tag commit hash matches v0.1.64
- [ ] Tested merge simulation locally
- [ ] Confirmed `git diff v0.1.64` is empty after simulated merge
- [ ] Test suite passes (if applicable)
- [ ] Build process succeeds (if applicable)
- [ ] Reviewed list of reverted changes
- [ ] Stakeholders notified
- [ ] Post-merge tasks documented and assigned

## Questions or Concerns?

Please comment on this PR if you have any questions or concerns about this rollback operation.

---

**Created by:** Automated process following Method 3 (Branch-from-Tag + Pull Request)  
**Date:** 2025-11-09  
**Target Branch:** master  
**Source Branch:** restore-v0.1.64  
**Tag:** v0.1.64
