feat: Establish core backend services including SQLite database, structured logging, and initial owner management capabilities.

backend/cmd/main.go

@@ -133,6 +133,7 @@ func startServer(cfg *config.Config) {
 	mux.HandleFunc("/api/db/owners/clear-used", api.CORS(handleClearUsedOwners))     // 清理已使用
 	mux.HandleFunc("/api/db/owners/delete/", api.CORS(handleDeleteOwner))            // DELETE /api/db/owners/delete/{id}
 	mux.HandleFunc("/api/db/owners/batch-delete", api.CORS(handleBatchDeleteOwners)) // POST 批量删除
+	mux.HandleFunc("/api/db/owners/ids", api.CORS(handleGetOwnerIDs))               // GET 获取所有ID（全选用）
 	mux.HandleFunc("/api/db/owners/refetch-account-ids", api.CORS(api.HandleRefetchAccountIDs))
 	mux.HandleFunc("/api/upload/validate", api.CORS(api.HandleUploadValidate))
 
@@ -977,6 +978,31 @@ func handleBatchDeleteOwners(w http.ResponseWriter, r *http.Request) {
 	})
 }
 
+// handleGetOwnerIDs GET /api/db/owners/ids?status=xxx - 获取所有符合条件的 owner ID（全选用）
+func handleGetOwnerIDs(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		api.Error(w, http.StatusMethodNotAllowed, "仅支持 GET")
+		return
+	}
+
+	if database.Instance == nil {
+		api.Error(w, http.StatusInternalServerError, "数据库未初始化")
+		return
+	}
+
+	status := r.URL.Query().Get("status")
+	ids, err := database.Instance.GetTeamOwnerIDs(status)
+	if err != nil {
+		api.Error(w, http.StatusInternalServerError, fmt.Sprintf("查询失败: %v", err))
+		return
+	}
+
+	api.Success(w, map[string]interface{}{
+		"ids":   ids,
+		"total": len(ids),
+	})
+}
+
 // handleRegisterTest POST /api/register/test - 测试注册流程
 func handleRegisterTest(w http.ResponseWriter, r *http.Request) {
 	if r.Method != http.MethodPost {