feat(vscode): enhance server readiness with multiple URL candidates (#145)

Add support for multiple candidate base URLs in readiness check.
Automatically set API URL override upon successful server connection.

package.json

@@ -64,7 +64,7 @@
     "@heroui/system": "^2.4.23",
     "@heroui/theme": "^2.4.23",
     "@ibm/plex": "^6.4.1",
-    "@opencode-ai/sdk": "^1.1.8",
+    "@opencode-ai/sdk": "^1.1.19",
     "@radix-ui/react-collapsible": "^1.1.12",
     "@radix-ui/react-dialog": "^1.1.15",
     "@radix-ui/react-dropdown-menu": "^2.1.16",