refactor: unify code formatting and improve push/search implementations

- Remove BOM from all Go source files
- Standardize import ordering and whitespace across handlers and services
- Replace PostgreSQL full-text search with ILIKE pattern matching in post and user repositories
- Enhance JPush client with TLS transport, rate limit monitoring, and simplified API
- Refactor PushService to include userID in device management methods
- Add MaxDevicesPerUser limit and extract helper functions for push payload construction

internal/handler/admin_report_handler.go

@@ -1,10 +1,10 @@
-package handler
+package handler
 
 import (
+	"strconv"
 	"with_you/internal/dto"
 	"with_you/internal/pkg/response"
 	"with_you/internal/service"
-	"strconv"
 
 	"github.com/gin-gonic/gin"
 	"go.uber.org/zap"
@@ -149,4 +149,4 @@ func parsePageParams(c *gin.Context) (int, int) {
 		pageSize = 20
 	}
 	return page, pageSize
-}
+}