refactor(config): 统一共享配置模板来源

internal/api/config_toml_test.go

@@ -27,12 +27,31 @@ func TestLoadConfigFromBinaryDirFirstLaunchCreatesExampleOnly(t *testing.T) {
 	if _, err := os.Stat(filepath.Join(dir, ConfigExampleName)); err != nil {
 		t.Fatalf("config.toml.example was not created: %v", err)
 	}
+	examplePath := filepath.Join(dir, ConfigExampleName)
+	example, err := os.ReadFile(examplePath)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if string(example) != ConfigTOMLTemplate {
+		t.Fatal("first-launch example differs from the canonical runtime template")
+	}
 	if _, err := os.Stat(filepath.Join(dir, ".env")); !os.IsNotExist(err) {
 		t.Fatalf("unexpected .env after first launch, err=%v", err)
 	}
 	if cfg.Listen != DefaultListen || cfg.RPCTimeout != 30*time.Second {
 		t.Fatalf("first launch changed defaults: %+v", cfg)
 	}
+
+	if err := LoadConfigFromBinaryDir(dir, &cfg); err != nil {
+		t.Fatal(err)
+	}
+	unchanged, err := os.ReadFile(examplePath)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if string(unchanged) != string(example) {
+		t.Fatal("existing config.toml.example was modified")
+	}
 }
 
 func TestCheckedInBatAPIConfigExampleMatchesRuntimeTemplate(t *testing.T) {