[WIP] I would like some help on PR #57, see the last comment I left you there

[Copilot]

• Analyze PR feat: added support for defining additional repositories #57 repositories feature and understand scope
• Identify code review issues that need fixing
• Fix API inconsistency: Add backward-compatible Resolver.create(String[]) method
• Fix fallback logic for URL hostname parsing in Main.java
• Add unit tests for AppInfo repositories parsing and serialization
• Add unit tests for Resolver with repositories
• Add unit tests for CLI repository option parsing
• Add integration tests for repositories feature
• Test scenarios: app.yml repos only, CLI repos only, and both combined
• Verify all tests pass and validate functionality manually

Changes Made:

1. Fixed API inconsistency in Resolver.java: Added backward-compatible create(String[]) method that calls create(String[], Collections.emptyMap())
2. Fixed URL hostname fallback logic in Main.java: Added proper null/empty checks and hash-based fallback names when URL hostname extraction fails
3. Added comprehensive tests for repositories feature:
   • AppInfoTest: Tests for reading/writing repositories in app.yml files
   • ResolverTest: Tests for Resolver API with and without repositories
   • RepositoryOptionParsingTest: Tests for CLI repository option parsing including edge cases
   • RepositoryIntegrationTest: Integration tests covering full workflow scenarios

Test Coverage:

• ✅ Repositories defined in app.yml file only
• ✅ Repositories passed via CLI options only
• ✅ Combined scenarios using both app.yml and CLI repositories
• ✅ Repository name parsing (with/without explicit names)
• ✅ URL hostname extraction with fallbacks
• ✅ Backward compatibility for existing API
• ✅ Error handling for malformed URLs
• ✅ Repository merging behavior (CLI overrides app.yml)

Manual Validation Completed:

• ✅ jpm copy -r repo=url artifact works correctly
• ✅ jpm copy -r url artifact works with auto-generated names
• ✅ jpm install uses repositories from app.yml
• ✅ jpm path resolves dependencies using custom repositories
• ✅ Multiple -r options supported
• ✅ Repository information preserved in app.yml

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