Persist microphone mute and volume settings

config/user_config.go

@@ -265,6 +265,13 @@ func (c *Config) SetMicVolume(v float32) {
 	c.config.MicVolume = &t
 }
 
+func (c *Config) GetMicVolume() float32 {
+	if c.config.MicVolume == nil {
+		return 1.0
+	}
+	return *c.config.MicVolume
+}
+
 func (c *Config) GetHotkeys() *Hotkeys {
 	return c.config.Hotkeys
 }

config/user_config_test.go

@@ -50,6 +50,17 @@ func TestMakeHostPortHandlesIPv6AndMalformedAddress(t *testing.T) {
 	}
 }
 
+// Regression: a stored zero mic volume was treated as an uninitialized value,
+// so a persisted mute became full volume after reconnecting.
+func TestMicVolumeAllowsPersistedMute(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "barnard.toml")
+	cfg := NewConfig(&path)
+	cfg.SetMicVolume(0)
+	if got := cfg.GetMicVolume(); got != 0 {
+		t.Fatalf("got %v, want mute", got)
+	}
+}
+
 func TestConfigUsesHomeEnvironmentForDefaultPath(t *testing.T) {
 	dir := t.TempDir()
 	t.Setenv("HOME", dir)