feat: harden loose-offline sync for user JWT, schema, and console ops

Enable Binding-scoped agent push/pull, empty-table schema ensure, SyncPage inspect/drop-table, default module import, and agent-bound publish docs from the 宇恒联调意见.

Co-authored-by: Cursor <cursoragent@cursor.com>

gateway/internal/config/config.go

@@ -1,4 +1,4 @@
-package config
+package config
 
 type Config struct {
 	Name            string `json:",optional"`
@@ -7,7 +7,7 @@ type Config struct {
 	PlatformURL     string `json:",default=http://127.0.0.1:8888"`
 	AIURL           string `json:",default=http://127.0.0.1:8001"`
 	RateLimitPerMin int    `json:",default=240"`
-	ProxyTimeoutSec int    `json:",default=60"`
+	ProxyTimeoutSec int    `json:",default=120"`
 	CorsEnable      bool   `json:",default=true"`
 	// 与中台 Auth.AccessSecret 保持一致
 	JWTSecret string `json:",optional"`