Add Spring test snippets for endpoints, DDD visibility and domain classes

[igorwojda]

Adds 3 Spring test snippets, plus dummy Spring classes (ResponseEntity, @Get/Post/Put/Patch/Delete/RequestMapping) so the snippets compile.

New snippets

Snippet	Rule
classes in 'domain' package should be internal	Domain classes stay module-private
classes with 'Service' or 'Repository' annotation should not be public	@Service / @Repository classes are not public
endpoints in classes with 'RestController' annotation should return 'ResponseEntity'	Mapping-annotated controller functions return ResponseEntity

Before / after examples

Domain classes

// ❌ fails
package com.app.domain
class Order

// ✅ passes
package com.app.domain
internal class Order

Service / Repository visibility

// ❌ fails
@Service
class UserService

// ✅ passes
@Service
internal class UserService

Endpoint return type

@RestController
class UserController {
    // ❌ fails
    @GetMapping
    fun users(): List<User> = ...

    // ✅ passes
    @GetMapping
    fun users(): ResponseEntity<List<User>> = ...
}

Verification

• Snippet file compiles with kotlinc against the current Konsist jar and the dummy classes.
• The Service/Repository and ResponseEntity rules were run against a sample Spring project; each flagged only the planted violation.

[github-actions]

📦 Konsist snapshot published

Version	1.0.0-alpha.1-20261014.213225-42
Latest snapshot	1.0.0-alpha.1-SNAPSHOT
Commit	043770c
Build	Publish #92
Artifact	konsist-1.0.0-alpha.1-20261014.213225-42.jar (pom)

repositories {
    maven("https://central.sonatype.com/repository/maven-snapshots/")
}

dependencies {
    testImplementation("com.lemonappdev:konsist:1.0.0-alpha.1-20261014.213225-42")
}

Snapshots are removed from the Central snapshots repository after 90 days.