implemented 07-server-mode.md: added server profile with REST API for builds, artifacts, live logs, and control tokens; lifecycle management for watcher; controller and service tests

src/main/kotlin/de/hoennig/gittally/GitTallyApplication.kt

@@ -5,6 +5,7 @@ import org.springframework.boot.ExitCodeGenerator
 import org.springframework.boot.SpringApplication
 import org.springframework.boot.autoconfigure.SpringBootApplication
 import org.springframework.boot.runApplication
+import org.springframework.context.annotation.Profile
 import org.springframework.stereotype.Component
 import picocli.CommandLine
 import picocli.CommandLine.IFactory
@@ -13,7 +14,9 @@ import kotlin.system.exitProcess
 @SpringBootApplication
 class GitTallyApplication
 
+/** Not in the `server` profile: the second context started by `ServerCommand` must not run picocli again. */
 @Component
+@Profile("!server")
 class CliRunner(
     private val factory: IFactory,
     private val rootCommand: GitTallyCommand,