Update: 将子项目从 submodule 转为完整内容

- 移除 GovAI, nomifun-tauri, 算力盒子 的 submodule 引用
- 添加所有子项目的完整源代码
- 保留原始 .git 为 .git.bak 备份

nomifun-tauri/crates/backend/nomifun-db/tests/settings_repository.rs

@@ -0,0 +1,77 @@
+//! Black-box integration tests for ISettingsRepository.
+//!
+//! Tests exercise the public trait interface against an in-memory SQLite database.
+
+use std::sync::Arc;
+
+use nomifun_db::{ISettingsRepository, SqliteSettingsRepository, init_database_memory};
+
+async fn repo() -> Arc<dyn ISettingsRepository> {
+    let db = init_database_memory().await.unwrap();
+    Arc::new(SqliteSettingsRepository::new(db.pool().clone()))
+}
+
+// -- Get default state --
+
+#[tokio::test]
+async fn get_settings_returns_none_when_no_row_exists() {
+    let r = repo().await;
+    assert!(r.get_settings().await.unwrap().is_none());
+}
+
+// -- Upsert creates a row --
+
+#[tokio::test]
+async fn upsert_creates_settings_with_given_values() {
+    let r = repo().await;
+    let s = r.upsert_settings("zh-CN", false, true, true, false).await.unwrap();
+
+    assert_eq!(s.language, "zh-CN");
+    assert!(!s.notification_enabled);
+    assert!(s.cron_notification_enabled);
+    assert!(s.command_queue_enabled);
+    assert!(!s.save_upload_to_workspace);
+    assert!(s.updated_at > 0);
+}
+
+// -- Upsert then get round-trip --
+
+#[tokio::test]
+async fn upsert_then_get_returns_consistent_data() {
+    let r = repo().await;
+    r.upsert_settings("en-US", true, false, false, true).await.unwrap();
+
+    let s = r.get_settings().await.unwrap().unwrap();
+    assert_eq!(s.language, "en-US");
+    assert!(s.notification_enabled);
+    assert!(!s.cron_notification_enabled);
+    assert!(!s.command_queue_enabled);
+    assert!(s.save_upload_to_workspace);
+}
+
+// -- Upsert overwrites --
+
+#[tokio::test]
+async fn upsert_overwrites_previous_settings() {
+    let r = repo().await;
+    r.upsert_settings("en-US", true, false, false, false).await.unwrap();
+    r.upsert_settings("zh-CN", false, true, true, true).await.unwrap();
+
+    let s = r.get_settings().await.unwrap().unwrap();
+    assert_eq!(s.language, "zh-CN");
+    assert!(!s.notification_enabled);
+    assert!(s.cron_notification_enabled);
+    assert!(s.command_queue_enabled);
+    assert!(s.save_upload_to_workspace);
+}
+
+// -- updated_at advances on each upsert --
+
+#[tokio::test]
+async fn upsert_advances_updated_at() {
+    let r = repo().await;
+    let first = r.upsert_settings("en-US", true, false, false, false).await.unwrap();
+    let second = r.upsert_settings("en-US", true, false, false, false).await.unwrap();
+
+    assert!(second.updated_at >= first.updated_at);
+}