# Compatibility-Aware Upload/Download Testing Summary
## Test Results
### 1. Script Functionality ✅
- **Upload Script (`index-artifact-upload-v2.py`)**:
- Generates compatibility hash correctly: `ec4b90fb`
- Compresses index files successfully (95.1 MB)
- Includes all necessary files: `code_index.db`, `vector_index.qdrant`, `.index_metadata.json`
- Calculates checksums for integrity verification
- **Download Script (`index-artifact-download-v2.py`)**:
- Correctly identifies current compatibility hash
- Has options for listing, downloading latest compatible, or forcing incompatible downloads
- Includes backup functionality for existing indexes
### 2. Git Hooks Integration ✅
- **Pre-push Hook**:
- Correctly detects when index files have changed
- Only uploads when necessary (avoiding unnecessary uploads)
- Respects configuration settings in `.mcp-index.json`
- **Post-merge Hook**:
- Ready to download compatible indexes after pulls
- Includes compatibility checking before download
### 3. Compatibility Hash Components
The system considers these factors for compatibility:
- **Embedding model**: `text-embedding-3-small`
- **Embedding dimensions**: 1024
- **Distance metric**: `cosine`
- **Schema version**: `2.0` (updated for relative paths)
- **Python version**: `3.12`
- **Language plugins**: All installed plugins
### 4. Why Git LFS is Not Needed
- GitHub artifacts handle the 378MB database file efficiently
- Automatic sync on push/pull eliminates manual steps
- Compatibility checking prevents index corruption
- Artifacts expire after 30 days, keeping storage clean
- No additional tools required beyond Python
## Limitations Found
1. Scripts require either:
- GitHub CLI (`gh`) installed, or
- `GITHUB_TOKEN` environment variable
2. Without these, the scripts work locally but can't interact with GitHub
## Conclusion
The compatibility-aware artifact system is working correctly and provides a superior solution to Git LFS for our use case. The system successfully:
- Keeps large files out of Git
- Provides automatic synchronization
- Ensures compatibility between different environments
- Maintains index integrity with checksums
