add ask user question hook

Wires up a PreToolUse hook for AskUserQuestion that emits a structured
'question_asked' event (already defined in Warp's CLI agent protocol
and mapped to Blocked status). Without this, AskUserQuestion calls fire
no Warp notification, so users miss prompts when not focused on Warp.

Author: novarii

plugins/warp/hooks/hooks.json

@@ -62,6 +62,17 @@
           }
         ]
       }
+    ],
+    "PreToolUse": [
+      {
+        "matcher": "AskUserQuestion",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "${CLAUDE_PLUGIN_ROOT}/scripts/on-ask-user-question.sh"
+          }
+        ]
+      }
     ]
   }
 }

plugins/warp/scripts/on-ask-user-question.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+# Hook script for Claude Code PreToolUse event on AskUserQuestion
+# Sends a structured Warp notification when Claude asks the user a question,
+# transitioning the session status to Blocked until the user answers.
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "$SCRIPT_DIR/should-use-structured.sh"
+
+# No legacy equivalent for this hook
+if ! should_use_structured; then
+    exit 0
+fi
+
+source "$SCRIPT_DIR/build-payload.sh"
+
+# Read hook input from stdin
+INPUT=$(cat)
+
+# AskUserQuestion supports 1-4 questions. Surface the first question's text as
+# the notification summary; if Claude asks more than one in the same call,
+# answering any of them unblocks the session.
+SUMMARY=$(echo "$INPUT" | jq -r '.tool_input.questions[0].question // "Claude is asking a question"' 2>/dev/null)
+
+# Truncate for notification display
+if [ -n "$SUMMARY" ] && [ ${#SUMMARY} -gt 200 ]; then
+    SUMMARY="${SUMMARY:0:197}..."
+fi
+
+BODY=$(build_payload "$INPUT" "question_asked" \
+    --arg summary "$SUMMARY")
+
+"$SCRIPT_DIR/warp-notify.sh" "warp://cli-agent" "$BODY"

plugins/warp/tests/test-hooks.sh

@@ -218,7 +218,7 @@ assert_eq "legacy Warp shows active message" \
 echo ""
 echo "--- Modern-only hooks exit silently without protocol version ---"
 
-for HOOK in on-permission-request.sh on-prompt-submit.sh on-post-tool-use.sh; do
+for HOOK in on-permission-request.sh on-prompt-submit.sh on-post-tool-use.sh on-ask-user-question.sh; do
     echo '{}' | bash "$HOOK_DIR/$HOOK" 2>/dev/null
     assert_eq "$HOOK exits 0 without protocol version" "0" "$?"
 done