Refactor RegistryClient to use npr-api model classes

[pditommaso]

Summary

This PR refactors the RegistryClient to leverage typed model classes from the io.seqera:npr-api library instead of using raw maps and manual JSON construction. This improves type safety, maintainability, and ensures compatibility with the Nextflow Plugin Registry API specification.

Key Changes

• Added npr-api dependency: Integrated io.seqera:npr-api:0.15.0 for typed API models
• Added Jackson dependencies: Added jackson-databind and jackson-datatype-jsr310 for JSON serialization
• Refactored request/response handling:
  • createDraftRelease() now uses CreatePluginReleaseRequest and CreatePluginReleaseResponse models
  • Removed manual JSON map construction in favor of model classes with fluent API
• Shadow JAR implementation: Configured Shadow plugin to bundle all dependencies into a self-contained artifact

Shadow JAR for Dependency Bundling

The plugin now uses the Gradle Shadow plugin to create a self-contained JAR that bundles all dependencies, including npr-api from Seqera's private Maven repository. This eliminates the need for plugin consumers to manually configure additional Maven repositories.

Key implementation details:

• Zero consumer configuration: Plugin users no longer need to add Seqera's Maven repository to their pluginManagement block
• Package relocation: Common libraries (Gson, Jackson, Commons IO) are relocated to io.nextflow.shadow.* to prevent classpath conflicts
• Self-contained artifact: Single 8.4 MB JAR includes all dependencies needed at runtime
• includeBuild compatibility: Works seamlessly with composite builds without publishToMavenLocal

Trade-offs:

• Larger artifact size (8.4 MB vs ~80 KB) - acceptable one-time download cost for Gradle plugin distribution
• Increased build complexity with Shadow plugin configuration
• Improved user experience by eliminating manual repository configuration

See adr/20251024-shadow-jar-dependency-bundling.md for full technical details.

Benefits

• Type Safety: Compile-time checking for API request/response structure
• Maintainability: Single source of truth for API models (npr-api library)
• API Compatibility: Ensures alignment with the official registry API specification
• Better IDE Support: Autocomplete and type hints for API model fields
• Simplified Distribution: No additional repository configuration required by consumers

Testing

• All existing tests pass with the new implementation
• WireMock-based tests verify correct JSON serialization format

🤖 Generated with Claude Code

[pditommaso]

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