fix: refactor cli generation options to a request object

[cdsap]

Summary

Problem

cli/src/main/kotlin/io/github/cdsap/projectgenerator/cli/Main.kt mixes Clikt option declarations with application-level generation mapping: enum conversion and Android-only validation at lines 63-72, versions/Gradle/path resolution at lines 73-100, and helper functions at lines 115-158. The tests in cli/src/test/kotlin/io/github/cdsap/projectgenerator/cli/GenerateProjectsCliTest.kt already exercise pieces of that mapping directly, which shows this logic is more than command-line parsing.

Why this matters

As new generation flags are added, GenerateProjects.run() becomes the place where transport concerns, validation rules, defaults, and generator construction all change together. That raises the chance of precedence regressions such as CLI flags accidentally clearing values from --versions-file, and makes it harder to test generation-request behavior without instantiating a Clikt command.

Proposed change

Introduce a small internal CLI-side request/config type, for example GenerateProjectRequest, plus a mapper from parsed GenerateProjects options to that type. Move resolveVersions, resolveGradle, resolveProjectRootPath, project-name derivation, and Android-only feature validation behind that request-building boundary. Keep GenerateProjects.run() responsible for parsing and invoking ProjectGenerator(...).write() only.

Notes

Clean architecture lens: GenerateProjects is a delivery adapter, while the resolved generation request is the CLI application boundary. Extracting that boundary keeps domain models in project-generator unchanged while making CLI policy explicit and easier to test.

Fixes #424

Changes

• cli/src/main/kotlin/io/github/cdsap/projectgenerator/cli/GenerateProjectRequest.kt
• cli/src/main/kotlin/io/github/cdsap/projectgenerator/cli/Main.kt
• cli/src/test/kotlin/io/github/cdsap/projectgenerator/cli/GenerateProjectsCliTest.kt

Verification

• ./gradlew :project-generator:unitTest
• ./gradlew :cli:test
• ./gradlew ktlintCheck