refactor(commands): update command layer to use database API

- Update config commands to query database for providers and settings
- Modify provider commands to pass database handle to services
- Update MCP commands to use database-backed operations
- Refactor prompt and skill commands to leverage database storage
- Simplify import/export commands with database integration

src-tauri/src/commands/skill.rs

@@ -13,10 +13,7 @@ pub async fn get_skills(
     service: State<'_, SkillServiceState>,
     app_state: State<'_, AppState>,
 ) -> Result<Vec<Skill>, String> {
-    let repos = {
-        let config = app_state.config.read().map_err(|e| e.to_string())?;
-        config.skills.repos.clone()
-    };
+    let repos = app_state.db.get_skill_repos().map_err(|e| e.to_string())?;
 
     service
         .0
@@ -32,10 +29,7 @@ pub async fn install_skill(
     app_state: State<'_, AppState>,
 ) -> Result<bool, String> {
     // 先在不持有写锁的情况下收集仓库与技能信息
-    let repos = {
-        let config = app_state.config.read().map_err(|e| e.to_string())?;
-        config.skills.repos.clone()
-    };
+    let repos = app_state.db.get_skill_repos().map_err(|e| e.to_string())?;
 
     let skills = service
         .0
@@ -85,19 +79,16 @@ pub async fn install_skill(
             .map_err(|e| e.to_string())?;
     }
 
-    {
-        let mut config = app_state.config.write().map_err(|e| e.to_string())?;
-
-        config.skills.skills.insert(
-            directory.clone(),
-            SkillState {
+    app_state
+        .db
+        .update_skill_state(
+            &directory,
+            &SkillState {
                 installed: true,
                 installed_at: Utc::now(),
             },
-        );
-    }
-
-    app_state.save().map_err(|e| e.to_string())?;
+        )
+        .map_err(|e| e.to_string())?;
 
     Ok(true)
 }
@@ -113,13 +104,17 @@ pub fn uninstall_skill(
         .uninstall_skill(directory.clone())
         .map_err(|e| e.to_string())?;
 
-    {
-        let mut config = app_state.config.write().map_err(|e| e.to_string())?;
-
-        config.skills.skills.remove(&directory);
-    }
-
-    app_state.save().map_err(|e| e.to_string())?;
+    // Remove from database by setting installed = false
+    app_state
+        .db
+        .update_skill_state(
+            &directory,
+            &SkillState {
+                installed: false,
+                installed_at: Utc::now(),
+            },
+        )
+        .map_err(|e| e.to_string())?;
 
     Ok(true)
 }
@@ -129,28 +124,19 @@ pub fn get_skill_repos(
     _service: State<'_, SkillServiceState>,
     app_state: State<'_, AppState>,
 ) -> Result<Vec<SkillRepo>, String> {
-    let config = app_state.config.read().map_err(|e| e.to_string())?;
-
-    Ok(config.skills.repos.clone())
+    app_state.db.get_skill_repos().map_err(|e| e.to_string())
 }
 
 #[tauri::command]
 pub fn add_skill_repo(
     repo: SkillRepo,
-    service: State<'_, SkillServiceState>,
+    _service: State<'_, SkillServiceState>,
     app_state: State<'_, AppState>,
 ) -> Result<bool, String> {
-    {
-        let mut config = app_state.config.write().map_err(|e| e.to_string())?;
-
-        service
-            .0
-            .add_repo(&mut config.skills, repo)
-            .map_err(|e| e.to_string())?;
-    }
-
-    app_state.save().map_err(|e| e.to_string())?;
-
+    app_state
+        .db
+        .save_skill_repo(&repo)
+        .map_err(|e| e.to_string())?;
     Ok(true)
 }
 
@@ -158,19 +144,12 @@ pub fn add_skill_repo(
 pub fn remove_skill_repo(
     owner: String,
     name: String,
-    service: State<'_, SkillServiceState>,
+    _service: State<'_, SkillServiceState>,
     app_state: State<'_, AppState>,
 ) -> Result<bool, String> {
-    {
-        let mut config = app_state.config.write().map_err(|e| e.to_string())?;
-
-        service
-            .0
-            .remove_repo(&mut config.skills, owner, name)
-            .map_err(|e| e.to_string())?;
-    }
-
-    app_state.save().map_err(|e| e.to_string())?;
-
+    app_state
+        .db
+        .delete_skill_repo(&owner, &name)
+        .map_err(|e| e.to_string())?;
     Ok(true)
 }