Speed up ctrlc test by using shorter sleep (1s instead of 5s)

tests/test_ctrlc_after_tool.sh

@@ -2,10 +2,10 @@
 # test_ctrlc_after_tool.sh - Test ctrlc (SIGINT) handling between tool calls
 
 # Create mock responses: two tool calls followed by a final response
-# First tool sleeps 5 seconds, second tool is instant
-# We send SIGINT during the first tool's execution (at 3s)
-# The new ctrlc check after tool execution should catch it at 5s
-tool_call run_dangerous_shell '{"command":"sleep 5","timeout_seconds":10}' >> mock_ctrlc_between_tools.txt
+# First tool sleeps 1 second, second tool is instant
+# We send SIGINT during the first tool's execution (at 0.5s)
+# The new ctrlc check after tool execution should catch it at 1s
+tool_call run_dangerous_shell '{"command":"sleep 1","timeout_seconds":5}' >> mock_ctrlc_between_tools.txt
 tool_call run_dangerous_shell '{"command":"echo second_tool","timeout_seconds":5}' >> mock_ctrlc_between_tools.txt
 be_done 'Final response' >> mock_ctrlc_between_tools.txt
 
@@ -13,11 +13,11 @@ be_done 'Final response' >> mock_ctrlc_between_tools.txt
 "${DRHARNESS}" -F chat_ctrlc.json -n -m "Test ctrlc between tools" -t run_dangerous_shell -d < "mock_ctrlc_between_tools.txt" > /dev/null 2>&1 &
 DRHARNESS_PID=$!
 
-# Send SIGINT at 3s - during first tool's sleep
-sleep 3
+# Send SIGINT at 0.5s - during first tool's sleep
+sleep 0.5
 kill -SIGINT $DRHARNESS_PID 2>/dev/null || true
 
-# Wait for drharness to complete (first tool finishes at 5s, then ctrlc check catches it)
+# Wait for drharness to complete (first tool finishes at 1s, then ctrlc check catches it)
 wait $DRHARNESS_PID 2>/dev/null || true
 
 # Verify the chat file exists and has the conversation state preserved