feat: route staged scene skills through runtime

Add registry-driven scene routing and multi-root skill loading so fault-details and 95598 scene skills can be triggered from natural language while still running through the browser-backed runtime.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

resources/rules.json

@@ -6,6 +6,8 @@
       "oa.example.com",
       "erp.example.com",
       "hr.example.com",
+      "sgcc.example.invalid",
+      "95598.example.invalid",
       "baidu.com",
       "www.baidu.com",
       "zhihu.com",