feat(coding-agent): add llama.cpp router integration

packages/coding-agent/src/core/extensions/types.ts

@@ -1482,6 +1482,8 @@ export type InlineExtension =
 			/** Display name shown as `<inline:name>` in the startup Extensions list. */
 			name: string;
 			factory: ExtensionFactory;
+			/** Omit this extension from the startup Extensions list. */
+			hidden?: boolean;
 	  };
 
 // ============================================================================
@@ -1649,6 +1651,7 @@ export interface ExtensionRuntime extends ExtensionRuntimeState, ExtensionAction
 export interface Extension {
 	path: string;
 	resolvedPath: string;
+	hidden?: boolean;
 	sourceInfo: SourceInfo;
 	handlers: Map<string, HandlerFn[]>;
 	tools: Map<string, RegisteredTool>;