diff --git a/pkg/channels/irc/irc_test.go b/pkg/channels/irc/irc_test.go
index 9ac3042c3..1eb23176b 100644
--- a/pkg/channels/irc/irc_test.go
+++ b/pkg/channels/irc/irc_test.go
@@ -1,163 +1,163 @@
-package irc
-
-import (
-	"reflect"
-	"testing"
-
-	"github.com/sipeed/picoclaw/pkg/bus"
-	"github.com/sipeed/picoclaw/pkg/config"
-)
-
-func TestNewIRCChannel(t *testing.T) {
-	msgBus := bus.NewMessageBus()
-
-	t.Run("missing server", func(t *testing.T) {
-		cfg := config.IRCConfig{Nick: "bot"}
-		_, err := NewIRCChannel(cfg, msgBus)
-		if err == nil {
-			t.Error("expected error for missing server, got nil")
-		}
-	})
-
-	t.Run("missing nick", func(t *testing.T) {
-		cfg := config.IRCConfig{Server: "irc.example.com:6667"}
-		_, err := NewIRCChannel(cfg, msgBus)
-		if err == nil {
-			t.Error("expected error for missing nick, got nil")
-		}
-	})
-
-	t.Run("valid config", func(t *testing.T) {
-		cfg := config.IRCConfig{
-			Server:   "irc.example.com:6667",
-			Nick:     "testbot",
-			Channels: []string{"#test"},
-		}
-		ch, err := NewIRCChannel(cfg, msgBus)
-		if err != nil {
-			t.Fatalf("unexpected error: %v", err)
-		}
-		if ch.Name() != "irc" {
-			t.Errorf("Name() = %q, want %q", ch.Name(), "irc")
-		}
-		if ch.IsRunning() {
-			t.Error("new channel should not be running")
-		}
-	})
-
-	t.Run("normalizes auto join channels", func(t *testing.T) {
-		cfg := config.IRCConfig{
-			Server:   "irc.example.com:6667",
-			Nick:     "testbot",
-			Channels: []string{" general ", "#already", "&ops", "+local", "!safe", "", "news"},
-		}
-		ch, err := NewIRCChannel(cfg, msgBus)
-		if err != nil {
-			t.Fatalf("unexpected error: %v", err)
-		}
-
-		want := config.FlexibleStringSlice{"#general", "#already", "&ops", "+local", "!safe", "#news"}
-		if !reflect.DeepEqual(ch.config.Channels, want) {
-			t.Fatalf("Channels = %#v, want %#v", ch.config.Channels, want)
-		}
-	})
-}
-
-func TestExtractHost(t *testing.T) {
-	tests := []struct {
-		server string
-		want   string
-	}{
-		{"irc.libera.chat:6697", "irc.libera.chat"},
-		{"localhost:6667", "localhost"},
-		{"irc.example.com", "irc.example.com"},
-		{"", ""},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.server, func(t *testing.T) {
-			got := extractHost(tt.server)
-			if got != tt.want {
-				t.Errorf("extractHost(%q) = %q, want %q", tt.server, got, tt.want)
-			}
-		})
-	}
-}
-
-func TestNickMentionedAt(t *testing.T) {
-	tests := []struct {
-		name    string
-		content string
-		nick    string
-		want    int
-	}{
-		{"colon prefix", "bot: hello", "bot", 0},
-		{"comma prefix", "bot, hello", "bot", 0},
-		{"case insensitive", "BOT: hello", "bot", 0},
-		{"word boundary mid", "hey bot what's up", "bot", 4},
-		{"no mention", "hello world", "bot", -1},
-		{"substring mismatch", "robotics are cool", "bot", -1},
-		{"nick at end", "hello bot", "bot", 6},
-		{"empty content", "", "bot", -1},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			got := nickMentionedAt(tt.content, tt.nick)
-			if got != tt.want {
-				t.Errorf("nickMentionedAt(%q, %q) = %d, want %d", tt.content, tt.nick, got, tt.want)
-			}
-		})
-	}
-}
-
-func TestIsBotMentioned(t *testing.T) {
-	tests := []struct {
-		name    string
-		content string
-		nick    string
-		want    bool
-	}{
-		{"colon prefix", "bot: hello", "bot", true},
-		{"comma prefix", "bot, hello", "bot", true},
-		{"case insensitive", "BOT: hello", "bot", true},
-		{"word boundary mid", "hey bot what's up", "bot", true},
-		{"no mention", "hello world", "bot", false},
-		{"substring mismatch", "robotics are cool", "bot", false},
-		{"nick at end", "hello bot", "bot", true},
-		{"empty content", "", "bot", false},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			got := isBotMentioned(tt.content, tt.nick)
-			if got != tt.want {
-				t.Errorf("isBotMentioned(%q, %q) = %v, want %v", tt.content, tt.nick, got, tt.want)
-			}
-		})
-	}
-}
-
-func TestStripBotMention(t *testing.T) {
-	tests := []struct {
-		name    string
-		content string
-		nick    string
-		want    string
-	}{
-		{"colon prefix", "bot: hello there", "bot", "hello there"},
-		{"comma prefix", "bot, help me", "bot", "help me"},
-		{"case insensitive", "BOT: hello", "bot", "hello"},
-		{"no prefix match", "hello bot", "bot", "hello bot"},
-		{"only prefix", "bot:", "bot", ""},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			got := stripBotMention(tt.content, tt.nick)
-			if got != tt.want {
-				t.Errorf("stripBotMention(%q, %q) = %q, want %q", tt.content, tt.nick, got, tt.want)
-			}
-		})
-	}
-}
+package irc
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/sipeed/picoclaw/pkg/bus"
+	"github.com/sipeed/picoclaw/pkg/config"
+)
+
+func TestNewIRCChannel(t *testing.T) {
+	msgBus := bus.NewMessageBus()
+
+	t.Run("missing server", func(t *testing.T) {
+		cfg := config.IRCConfig{Nick: "bot"}
+		_, err := NewIRCChannel(cfg, msgBus)
+		if err == nil {
+			t.Error("expected error for missing server, got nil")
+		}
+	})
+
+	t.Run("missing nick", func(t *testing.T) {
+		cfg := config.IRCConfig{Server: "irc.example.com:6667"}
+		_, err := NewIRCChannel(cfg, msgBus)
+		if err == nil {
+			t.Error("expected error for missing nick, got nil")
+		}
+	})
+
+	t.Run("valid config", func(t *testing.T) {
+		cfg := config.IRCConfig{
+			Server:   "irc.example.com:6667",
+			Nick:     "testbot",
+			Channels: []string{"#test"},
+		}
+		ch, err := NewIRCChannel(cfg, msgBus)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if ch.Name() != "irc" {
+			t.Errorf("Name() = %q, want %q", ch.Name(), "irc")
+		}
+		if ch.IsRunning() {
+			t.Error("new channel should not be running")
+		}
+	})
+
+	t.Run("normalizes auto join channels", func(t *testing.T) {
+		cfg := config.IRCConfig{
+			Server:   "irc.example.com:6667",
+			Nick:     "testbot",
+			Channels: []string{" general ", "#already", "&ops", "+local", "!safe", "", "news"},
+		}
+		ch, err := NewIRCChannel(cfg, msgBus)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+
+		want := config.FlexibleStringSlice{"#general", "#already", "&ops", "+local", "!safe", "#news"}
+		if !reflect.DeepEqual(ch.config.Channels, want) {
+			t.Fatalf("Channels = %#v, want %#v", ch.config.Channels, want)
+		}
+	})
+}
+
+func TestExtractHost(t *testing.T) {
+	tests := []struct {
+		server string
+		want   string
+	}{
+		{"irc.libera.chat:6697", "irc.libera.chat"},
+		{"localhost:6667", "localhost"},
+		{"irc.example.com", "irc.example.com"},
+		{"", ""},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.server, func(t *testing.T) {
+			got := extractHost(tt.server)
+			if got != tt.want {
+				t.Errorf("extractHost(%q) = %q, want %q", tt.server, got, tt.want)
+			}
+		})
+	}
+}
+
+func TestNickMentionedAt(t *testing.T) {
+	tests := []struct {
+		name    string
+		content string
+		nick    string
+		want    int
+	}{
+		{"colon prefix", "bot: hello", "bot", 0},
+		{"comma prefix", "bot, hello", "bot", 0},
+		{"case insensitive", "BOT: hello", "bot", 0},
+		{"word boundary mid", "hey bot what's up", "bot", 4},
+		{"no mention", "hello world", "bot", -1},
+		{"substring mismatch", "robotics are cool", "bot", -1},
+		{"nick at end", "hello bot", "bot", 6},
+		{"empty content", "", "bot", -1},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := nickMentionedAt(tt.content, tt.nick)
+			if got != tt.want {
+				t.Errorf("nickMentionedAt(%q, %q) = %d, want %d", tt.content, tt.nick, got, tt.want)
+			}
+		})
+	}
+}
+
+func TestIsBotMentioned(t *testing.T) {
+	tests := []struct {
+		name    string
+		content string
+		nick    string
+		want    bool
+	}{
+		{"colon prefix", "bot: hello", "bot", true},
+		{"comma prefix", "bot, hello", "bot", true},
+		{"case insensitive", "BOT: hello", "bot", true},
+		{"word boundary mid", "hey bot what's up", "bot", true},
+		{"no mention", "hello world", "bot", false},
+		{"substring mismatch", "robotics are cool", "bot", false},
+		{"nick at end", "hello bot", "bot", true},
+		{"empty content", "", "bot", false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := isBotMentioned(tt.content, tt.nick)
+			if got != tt.want {
+				t.Errorf("isBotMentioned(%q, %q) = %v, want %v", tt.content, tt.nick, got, tt.want)
+			}
+		})
+	}
+}
+
+func TestStripBotMention(t *testing.T) {
+	tests := []struct {
+		name    string
+		content string
+		nick    string
+		want    string
+	}{
+		{"colon prefix", "bot: hello there", "bot", "hello there"},
+		{"comma prefix", "bot, help me", "bot", "help me"},
+		{"case insensitive", "BOT: hello", "bot", "hello"},
+		{"no prefix match", "hello bot", "bot", "hello bot"},
+		{"only prefix", "bot:", "bot", ""},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := stripBotMention(tt.content, tt.nick)
+			if got != tt.want {
+				t.Errorf("stripBotMention(%q, %q) = %q, want %q", tt.content, tt.nick, got, tt.want)
+			}
+		})
+	}
+}