diff --git a/.github/workflows/goreleaser.yml b/.github/workflows/goreleaser.yml
index de0f7bf..e24cc65 100644
--- a/.github/workflows/goreleaser.yml
+++ b/.github/workflows/goreleaser.yml
@@ -28,7 +28,7 @@ jobs:
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v7.2.3
         with:
-          version: v2.18.0
+          version: v2.18.2
           args: release --clean
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.golangci.yml b/.golangci.yml
index 5a86708..c37fdff 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -24,6 +24,7 @@ linters:
     - modernize
     - nakedret
     - nestif
+    - nolintlint
     - revive
     - staticcheck
     - unconvert
@@ -44,9 +45,12 @@ linters:
       disable:
         - fieldalignment
     revive:
+      enable-default-rules: true
       rules:
         - name: exported
           disabled: true
+    nolintlint:
+      allow-unused: false
     misspell:
       locale: US
     goconst:
diff --git a/cmd/image/commands.go b/cmd/image/commands.go
index 65fc9dd..e889202 100644
--- a/cmd/image/commands.go
+++ b/cmd/image/commands.go
@@ -1,3 +1,4 @@
+// Package image defines the cocoon-macos image commands.
 package image
 
 import (
diff --git a/cmd/root.go b/cmd/root.go
index 1adb1e2..483ac4a 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -1,3 +1,4 @@
+// Package cmd wires cocoon-macos subcommands.
 package cmd
 
 import (
@@ -78,5 +79,10 @@ func setupLog(ctx context.Context) error {
 	origStdout := os.Stdout
 	os.Stdout = os.Stderr
 	defer func() { os.Stdout = origStdout }()
-	return log.SetupLog(ctx, &types.ServerLogConfig{Level: level}, "")
+	return log.SetupLog(ctx, &types.ServerLogConfig{Level: level, UseJSON: !stderrIsTerminal()}, "")
+}
+
+func stderrIsTerminal() bool {
+	fi, err := os.Stderr.Stat()
+	return err == nil && fi.Mode()&os.ModeCharDevice != 0
 }
diff --git a/cmd/vm/commands.go b/cmd/vm/commands.go
index 5a415ac..58cf60e 100644
--- a/cmd/vm/commands.go
+++ b/cmd/vm/commands.go
@@ -1,3 +1,4 @@
+// Package vm defines the cocoon-macos vm commands.
 package vm
 
 import (
diff --git a/go.mod b/go.mod
index 41f0a70..793fdc6 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/cocoonstack/cocoon-macos
 
-go 1.27.0
+go 1.27.1
 
 require (
 	github.com/cocoonstack/cocoon v0.6.9-0.20260924025202-dcec1fa3f056
diff --git a/internal/procutil/terminate.go b/internal/procutil/terminate.go
index 4196889..0024adf 100644
--- a/internal/procutil/terminate.go
+++ b/internal/procutil/terminate.go
@@ -1,3 +1,4 @@
+// Package procutil terminates VMM processes after verifying their command-line identity.
 package procutil
 
 import (
diff --git a/main.go b/main.go
index 83f0975..163c9d8 100644
--- a/main.go
+++ b/main.go
@@ -1,3 +1,4 @@
+// Package main is the cocoon-macos entry point.
 package main
 
 import "github.com/cocoonstack/cocoon-macos/cmd"
diff --git a/version/version.go b/version/version.go
index 1a1f91d..5d4fb1d 100644
--- a/version/version.go
+++ b/version/version.go
@@ -1,3 +1,4 @@
+// Package version holds build-time metadata injected via ldflags.
 package version
 
 import (