From 53c349cb86048a75a2a074405e7dad6f0f023542 Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Wed, 10 Dec 2025 11:46:28 +0000
Subject: [PATCH] RPC: auto-cancel hook UI prompts

---
 src/process/tau-rpc.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/process/tau-rpc.ts b/src/process/tau-rpc.ts
index 9cc3366d9..577950b0e 100644
--- a/src/process/tau-rpc.ts
+++ b/src/process/tau-rpc.ts
@@ -99,6 +99,8 @@ class TauRpcClient {
         error?: string;
         message?: unknown;
         willRetry?: boolean;
+        id?: string;
+        method?: string;
       };
 
       if (evt.type === "response" && evt.command === "prompt") {
@@ -140,6 +142,19 @@ class TauRpcClient {
         this.scheduleMaybeResolve();
         return;
       }
+
+      // Handle hook UI requests by auto-cancelling (non-interactive surfaces like WhatsApp)
+      if (evt.type === "hook_ui_request" && evt.id) {
+        // Fire-and-forget response to unblock hook runner
+        this.child?.stdin.write(
+          `${JSON.stringify({
+            type: "hook_ui_response",
+            id: evt.id,
+            cancelled: true,
+          })}\n`,
+        );
+        return;
+      }
     } catch {
       // ignore malformed/non-JSON lines
     }