fix(grokbuild): complete proxy and deep-link integrations (#5677)

* fix(grokbuild): complete proxy integration

* fix(deeplink): preview GrokBuild configs safely

* test(app): stabilize provider integration suite

* fix(grokbuild): address review feedback

* fix(grokbuild): resolve remaining review findings

* fix(grokbuild): use native sessions and harden previews

src/lib/api/deeplink.ts

@@ -7,7 +7,14 @@ export interface DeepLinkImportRequest {
   resource: ResourceType;
 
   // Common fields
-  app?: "claude" | "codex" | "gemini";
+  app?:
+    | "claude"
+    | "codex"
+    | "gemini"
+    | "grokbuild"
+    | "opencode"
+    | "openclaw"
+    | "hermes";
   name?: string;
   enabled?: boolean;
 
@@ -27,7 +34,7 @@ export interface DeepLinkImportRequest {
   description?: string;
 
   // MCP fields
-  apps?: string; // "claude,codex,gemini"
+  apps?: string; // Comma-separated application IDs
 
   // Skill fields
   repo?: string;