feat(query): sql workspace conveniences per opsxdb patterns

- generic ContextMenu component (viewport flip, esc/outside close)
- SchemaSidebar table right-click menu: preview data, generate
  SELECT/INSERT/UPDATE/DELETE templates with pk-aware WHERE, copy table
  name; double-click table runs preview SELECT; column right-click
  copy/insert; dialect-aware quoting; preview SELECT carries no LIMIT
- SqlEditor selection-first execution (Mod-Enter runs selection else
  statement at cursor via quote/comment-aware splitter); pagination
  replays last executed statement
- query history persisted server-side: drawer fetches query-histories
  with keyword/mine/favorites filters, star toggle (new PUT favorite +
  mine filter endpoints), insert and insert-and-run
- custom templates in localStorage alongside built-ins
- unit tests: genSql + statement splitter (28 tests green)

backend/internal/handler/ghost.go

@@ -9,6 +9,7 @@ import (
 
 	"sql-platform/internal/ghost"
 	"sql-platform/internal/handler/resp"
+	"sql-platform/internal/middleware"
 	"sql-platform/internal/model"
 
 	"github.com/gin-gonic/gin"
@@ -445,11 +446,36 @@ func ListAnnouncements(c *gin.Context) {
 
 // GET /api/v1/query-histories
 func ListQueryHistories(c *gin.Context) {
-	_, _, _ = c.GetInt("user_id"), c.GetString("username"), c.GetString("role")
+	userID, _, _ := middleware.GetCurrentUser(c)
 
+	q := model.DB.Order("id DESC").Limit(100)
+	if c.Query("mine") == "1" {
+		q = q.Where("user_id = ?", userID)
+	}
 	var histories []model.QueryHistory
-	model.DB.Order("id DESC").Limit(100).Find(&histories)
-	c.JSON(http.StatusOK, histories)
+	q.Find(&histories)
+	resp.OK(c, histories)
+}
+
+// PUT /api/v1/query-histories/:id/favorite — 收藏/取消收藏
+func ToggleQueryHistoryFavorite(c *gin.Context) {
+	userID, _, _ := middleware.GetCurrentUser(c)
+	id := c.Param("id")
+
+	var history model.QueryHistory
+	if err := model.DB.First(&history, id).Error; err != nil {
+		resp.NotFound(c, "History not found")
+		return
+	}
+	if history.UserID != userID {
+		resp.Forbidden(c, "只能收藏自己的查询历史")
+		return
+	}
+	if err := model.DB.Model(&history).Update("is_favorite", !history.IsFavorite).Error; err != nil {
+		resp.InternalErr(c, err)
+		return
+	}
+	resp.OK(c, gin.H{"id": history.ID, "is_favorite": !history.IsFavorite})
 }
 
 // GET /api/v1/settings — returns settings grouped by `group` field

backend/router/router.go

@@ -199,6 +199,7 @@ func Setup(r *gin.Engine) {
 		}
 		auth.GET("/announcements", handler.ListAnnouncements)
 		auth.GET("/query-histories", handler.ListQueryHistories)
+		auth.PUT("/query-histories/:id/favorite", handler.ToggleQueryHistoryFavorite)
 		// Notifications CRUD (replaces old channels/templates endpoints)
 		auth.GET("/notifications", handler.ListNotifications)
 		auth.POST("/notifications", handler.CreateNotification)