Replace kotlinx-cli with picocli

[dfuchss]

kotlinx-cli is deprecated / not maintained; this PR tries to replace it with picocli .. however we should test the new CLI

[Copilot]

Pull Request Overview

This PR migrates the CLI from the deprecated kotlinx-cli library to picocli, a modern Java/Kotlin command-line parsing framework. The migration involves restructuring command definitions, changing the CLI architecture, and updating build configuration.

• Replace kotlinx-cli with picocli for command-line argument parsing
• Convert commands from Subcommand inheritance to Callable interface implementation
• Refactor output file handling to be command-specific rather than globally shared

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
RankCommand.kt	Convert from Subcommand to picocli Command with Callable interface
ClassificationCommand.kt	Migrate to picocli annotations and return exit codes
AggregationRankCommand.kt	Update to use picocli Command structure
AggregationClassificationCommand.kt	Convert to picocli-based command implementation
App.kt	Replace ArgParser with CommandLine and add root command class
pom.xml	Remove kotlinx-cli dependency and add picocli with annotation processing

Comments suppressed due to low confidence (1)

cli/pom.xml:15

• PicoCLI version 4.7.7 does not exist. The latest version in the 4.x series is 4.7.6, released in September 2023. Consider using version 4.7.6 instead.

    <picocli.version>4.7.7</picocli.version>

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
1 Accepted issue

Measures
0 Security Hotspots
0.0% Coverage on New Code
7.8% Duplication on New Code

See analysis details on SonarQube Cloud