feat: persist main window state

internal/services/store_test.go

@@ -80,7 +80,7 @@ func TestAppConfigServiceSettingsSchema(t *testing.T) {
 		"window.start_state":          "normal",
 		"window.width":                "1280",
 		"window.height":               "800",
-		"window.remember_state":       "false",
+		"window.remember_state":       "true",
 		"shortcut.open_second_window": "Alt+P",
 		"shortcut.open_main_window":   "Alt+M",
 		"data.root_mode":              "app_config_dir",
@@ -114,6 +114,31 @@ func TestAppConfigServiceSettingsSchema(t *testing.T) {
 	}
 }
 
+func TestMigrateUpgradesWindowRememberStateOldDefault(t *testing.T) {
+	store := newTestStore(t)
+
+	if _, err := store.DB.Exec(`
+		UPDATE appconfig
+		SET value = 'false',
+			description = '保存主窗口尺寸和最大化状态，T-015 使用该配置。'
+		WHERE key = 'window.remember_state'
+	`); err != nil {
+		t.Fatalf("set old window remember default: %v", err)
+	}
+
+	if err := Migrate(store.DB); err != nil {
+		t.Fatalf("migrate old window remember default: %v", err)
+	}
+
+	var value string
+	if err := store.DB.QueryRow("SELECT value FROM appconfig WHERE key = 'window.remember_state'").Scan(&value); err != nil {
+		t.Fatalf("query window remember state: %v", err)
+	}
+	if value != "true" {
+		t.Fatalf("window.remember_state = %q, want true", value)
+	}
+}
+
 func TestAppConfigServiceValidatesSchemaValues(t *testing.T) {
 	store := newTestStore(t)
 	service := NewAppConfigService(store)