feat: improve docker logging

apps/backend/cmd/kandev/agents.go

@@ -66,7 +66,7 @@ func provideLifecycleManager(
 		executorRegistry.Register(dockerExec)
 		log.Info("Docker runtime registered")
 	} else if cfg.Docker.Enabled && dockerClient == nil {
-		log.Warn("Docker runtime enabled but Docker client not available")
+		log.Debug("Docker runtime enabled but Docker client not available")
 	}
 
 	// Register Remote Docker runtime (always available, instances are created lazily per host)

apps/backend/cmd/kandev/helpers.go

@@ -49,11 +49,11 @@ import (
 func initDockerClient(ctx context.Context, cfg *config.Config, log *logger.Logger) *docker.Client {
 	dockerClient, err := docker.NewClient(cfg.Docker, log)
 	if err != nil {
-		log.Warn("Failed to initialize Docker client - agent features will be disabled", zap.Error(err))
+		log.Debug("Failed to initialize Docker client - agent features will be disabled", zap.Error(err))
 		return nil
 	}
 	if err := dockerClient.Ping(ctx); err != nil {
-		log.Warn("Docker daemon not available - agent features will be disabled", zap.Error(err))
+		log.Debug("Docker daemon not available - agent features will be disabled", zap.Error(err))
 		_ = dockerClient.Close()
 		return nil
 	}

apps/backend/internal/agent/docker/client.go

@@ -492,7 +492,7 @@ func (c *Client) Ping(ctx context.Context) error {
 
 	_, err := c.cli.Ping(ctx)
 	if err != nil {
-		c.logger.Warn("Docker ping failed", zap.Error(err))
+		c.logger.Debug("Docker ping failed", zap.Error(err))
 		return fmt.Errorf("docker ping failed: %w", err)
 	}
 

apps/backend/internal/agent/docker/handlers.go

@@ -36,7 +36,7 @@ type stopContainerRequest struct {
 // RegisterDockerRoutes registers Docker management HTTP routes on the given router.
 func RegisterDockerRoutes(router *gin.Engine, dockerClient *Client, log *logger.Logger) {
 	if dockerClient == nil {
-		log.Warn("Docker client is nil, skipping Docker route registration")
+		log.Debug("Docker client is nil, skipping Docker route registration")
 		return
 	}
 

apps/backend/internal/agent/lifecycle/executor_remote_docker.go

@@ -34,7 +34,7 @@ func (r *RemoteDockerExecutor) Name() executor.Name {
 func (r *RemoteDockerExecutor) HealthCheck(ctx context.Context) error {
 	// Remote docker health is checked per-host when creating instances.
 	// The runtime itself is always "available" as a capability.
-	r.logger.Warn("remote_docker runtime is registered but not yet implemented; health check is a no-op")
+	r.logger.Debug("remote_docker runtime is registered but not yet implemented; health check is a no-op")
 	return nil
 }
 

apps/cli/src/run.ts

@@ -71,6 +71,7 @@ async function prepareReleaseBundle({
   const actualWebPort = webPort ?? (await pickAvailablePort(DEFAULT_WEB_PORT));
   const agentctlPort = await pickAvailablePort(DEFAULT_AGENTCTL_PORT);
   const backendUrl = `http://localhost:${actualBackendPort}`;
+  const logLevel = process.env.KANDEV_LOG_LEVEL?.trim() || "warn";
 
   fs.mkdirSync(DATA_DIR, { recursive: true });
   const dbPath = path.join(DATA_DIR, "kandev.db");
@@ -83,7 +84,7 @@ async function prepareReleaseBundle({
     KANDEV_SERVER_PORT: String(actualBackendPort),
     KANDEV_AGENT_STANDALONE_PORT: String(agentctlPort),
     KANDEV_DATABASE_PATH: dbPath,
-    KANDEV_LOG_LEVEL: "warn",
+    KANDEV_LOG_LEVEL: logLevel,
   };
 
   const webEnv: NodeJS.ProcessEnv = {