Document all registerPath responses and normalize OpenAPI parser schemas

Agent-Logs-Url: https://github.com/fosrl/pangolin/sessions/73990123-9c27-444b-bc6e-77e890a0d57c

Co-authored-by: oschwartz10612 <4999704+oschwartz10612@users.noreply.github.com>

server/routers/client/listClients.ts

@@ -186,7 +186,22 @@ registry.registerPath({
         query: listClientsSchema,
         params: listClientsParamsSchema
     },
-    responses: {}
+    responses: {
+        200: {
+            description: "Successful response",
+            content: {
+                "application/json": {
+                    schema: z.object({
+                        data: z.unknown().nullable(),
+                        success: z.boolean(),
+                        error: z.boolean(),
+                        message: z.string(),
+                        status: z.number()
+                    })
+                }
+            }
+        }
+    }
 });
 
 export async function listClients(