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/service/jwt_service.go

@@ -1,8 +1,8 @@
-package service
+package service
 
 import (
-	"with_you/internal/pkg/jwt"
 	"time"
+	"with_you/internal/pkg/jwt"
 )
 
 // JWTService JWT服务