Add release command for automated database publishing

[mihaelamj]

Summary

Add cupertino release command that packages databases and uploads them to GitHub Releases automatically.

Implementation

• ReleaseCommand.swift - Creates zip and uploads to GitHub
• Version-matched releases (CLI 0.3.0 → tag v0.3.0)
• SHA256 checksum in release notes
• --dry-run flag for testing
• --repo option for custom repository
• --base-dir option for database location
• Handles existing releases (deletes and recreates)
• Uses GitHub API for release creation and asset upload

Usage

# Dry run (creates zip locally, no upload)
cupertino release --dry-run

# Publish to GitHub (requires GITHUB_TOKEN)
export GITHUB_TOKEN=your_token
cupertino release

# Custom repository
cupertino release --repo owner/repo

Workflow

1. Refresh databases locally (cupertino fetch && cupertino save)
2. Bump version in Constants.swift
3. Run cupertino release

Output

📦 Cupertino Release v0.3.0

📊 Database sizes:
   search.db:  1.2 GB
   samples.db: 192.2 MB

📁 Creating cupertino-databases-v0.3.0.zip...
   ✓ Created (228.3 MB)

🔐 Calculating SHA256...
   17dac4b84adaa04b5f976a7d1b9126630545f0101fe84ca5423163da886386a6

🚀 Creating release v0.3.0...
   ✓ Release created

⬆️  Uploading cupertino-databases-v0.3.0.zip...
   ✓ Upload complete

✅ Release v0.3.0 published!
   https://github.com/mihaelamj/cupertino-docs/releases/tag/v0.3.0

Documentation

• docs/commands/release/README.md - Main command documentation
• docs/commands/release/option (--)/base-dir.md - Database directory option
• docs/commands/release/option (--)/repo.md - GitHub repository option
• docs/commands/release/option (--)/dry-run.md - Local testing flag
• Updated docs/commands/README.md - Added release to commands table
• Updated CHANGELOG.md - Version 0.3.0 entry
• Updated AGENTS.md - Added release to CLI commands table

Related

• Issue Add setup command for instant database download #65 - setup command (consumer side)
• Issue Add --remote flag to save command for streaming from GitHub #52 - --remote flag

[mihaelamj]

Documentation Added

• docs/commands/release/README.md - Main command documentation
• docs/commands/release/option (--)/base-dir.md - Database directory option
• docs/commands/release/option (--)/repo.md - GitHub repository option
• docs/commands/release/option (--)/dry-run.md - Local testing flag
• Updated docs/commands/README.md - Added release to commands table
• Updated CHANGELOG.md - Version 0.3.0 entry
• Updated AGENTS.md - Added release to CLI commands table