feat(voice): 百炼声音复刻create_voice + TTS instruction情绪驱动(主TTS-昔涟复刻音色)

internal/config/config_test.go

@@ -190,6 +190,12 @@ func TestLoad_VoiceDefaults(t *testing.T) {
 	if cfg.Voice.TTSSampleRate != 24000 {
 		t.Errorf("TTSSampleRate = %d, want 24000", cfg.Voice.TTSSampleRate)
 	}
+	if cfg.Voice.VoiceTTSInstruction != "" {
+		t.Errorf("VoiceTTSInstruction = %q, want empty (default)", cfg.Voice.VoiceTTSInstruction)
+	}
+	if cfg.Voice.VoiceClonePrefix != "cyrene" {
+		t.Errorf("VoiceClonePrefix = %q, want cyrene (default)", cfg.Voice.VoiceClonePrefix)
+	}
 }
 
 func TestLoad_VoiceEnvOverrides(t *testing.T) {
@@ -209,6 +215,23 @@ func TestLoad_VoiceEnvOverrides(t *testing.T) {
 	}
 }
 
+func TestLoad_VoiceCloneInstructionEnvOverrides(t *testing.T) {
+	t.Setenv("JWT_SECRET", strings.Repeat("s", 40))
+	t.Setenv("VOICE_TTS_INSTRUCTION", "语气开朗俏皮，像女朋友撒娇")
+	t.Setenv("VOICE_CLONE_PREFIX", "xilian")
+
+	cfg, err := Load("")
+	if err != nil {
+		t.Fatalf("Load() error: %v", err)
+	}
+	if cfg.Voice.VoiceTTSInstruction != "语气开朗俏皮，像女朋友撒娇" {
+		t.Errorf("VoiceTTSInstruction = %q, want the env instruction", cfg.Voice.VoiceTTSInstruction)
+	}
+	if cfg.Voice.VoiceClonePrefix != "xilian" {
+		t.Errorf("VoiceClonePrefix = %q, want xilian", cfg.Voice.VoiceClonePrefix)
+	}
+}
+
 func TestParseDotEnv_QuotedAndExport(t *testing.T) {
 	path := writeEnvFile(t, `export FOO=bar
 BAZ='quoted value'