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/push_handler.go

@@ -1,4 +1,4 @@
-package handler
+package handler
 
 import (
 	"with_you/internal/dto"
@@ -67,7 +67,7 @@ func (h *PushHandler) UnregisterDevice(c *gin.Context) {
 		return
 	}
 
-	err := h.pushService.UnregisterDevice(c.Request.Context(), deviceID)
+	err := h.pushService.UnregisterDevice(c.Request.Context(), userID, deviceID)
 	if err != nil {
 		response.InternalServerError(c, "failed to unregister device")
 		return
@@ -141,14 +141,14 @@ func (h *PushHandler) UpdateDeviceToken(c *gin.Context) {
 	}
 
 	var req struct {
-		PushToken string `json:"push_token"` 
+		PushToken string `json:"push_token"`
 	}
 	if err := c.ShouldBindJSON(&req); err != nil {
 		response.BadRequest(c, err.Error())
 		return
 	}
 
-	err := h.pushService.UpdateDeviceToken(c.Request.Context(), deviceID, req.PushToken)
+	err := h.pushService.UpdateDeviceToken(c.Request.Context(), userID, deviceID, req.PushToken)
 	if err != nil {
 		response.InternalServerError(c, "failed to update device token")
 		return