refactor(gateway): hard-break plugin wildcard http handlers

extensions/diffs/index.ts

@@ -25,13 +25,16 @@ const plugin = {
     });
 
     api.registerTool(createDiffsTool({ api, store, defaults }));
-    api.registerHttpHandler(
-      createDiffsHttpHandler({
+    api.registerHttpRoute({
+      path: "/plugins/diffs",
+      auth: "plugin",
+      match: "prefix",
+      handler: createDiffsHttpHandler({
         store,
         logger: api.logger,
         allowRemoteViewer: security.allowRemoteViewer,
       }),
-    );
+    });
     api.on("before_prompt_build", async () => ({
       prependContext: DIFFS_AGENT_GUIDANCE,
     }));