diff --git a/CLAUDE.md b/CLAUDE.md
index 05f3bf63..33ed0713 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -73,9 +73,9 @@ All 5 ruvector crates integrated in workspace:
 
 | Device | Port | Chip | Role | Cost |
 |--------|------|------|------|------|
-| ESP32-S3 (8MB flash) | COM7 | Xtensa dual-core | WiFi CSI sensing node | ~$9 |
+| ESP32-S3 (8MB flash) | COM9 (ruvzen, was COM7) | Xtensa dual-core | WiFi CSI sensing node | ~$9 |
 | ESP32-S3 SuperMini (4MB) | — | Xtensa dual-core | WiFi CSI (compact) | ~$6 |
-| ESP32-C6 + Seeed MR60BHA2 | COM4 | RISC-V + 60 GHz FMCW | mmWave HR/BR/presence | ~$15 |
+| ESP32-C6 + Seeed MR60BHA2 | COM12 (ruvzen, was COM4) | RISC-V + 60 GHz FMCW | mmWave HR/BR/presence + WiFi CSI | ~$15 |
 | HLK-LD2410 | — | 24 GHz FMCW | Presence + distance | ~$3 |
 
 **Not supported:** ESP32 (original), ESP32-C3 — single-core, can't run CSI DSP pipeline.
diff --git a/scripts/hap-test-sensor.py b/scripts/hap-test-sensor.py
new file mode 100644
index 00000000..fa319389
--- /dev/null
+++ b/scripts/hap-test-sensor.py
@@ -0,0 +1,82 @@
+#!/usr/bin/env python3
+"""
+hap-test-sensor.py — ADR-125 §2.1.a smoke test.
+
+Stands up a single HomeKit Accessory Protocol (HAP-1.1) bridge with one
+child MotionSensor named "RuView Test Motion". Once paired in the Apple
+Home app, the HomePod (acting as Home Hub) sees state changes when
+TOGGLE_FILE (default /tmp/ruview-motion) is touched / removed.
+
+Usage:
+    python3 hap-test-sensor.py
+
+Pair from iPhone: Home app -> Add Accessory -> More Options -> "RuView Test Bridge".
+The setup code is printed on stdout AND written to ~/.ruview-hap/setup-code.txt.
+
+Trigger motion:  touch /tmp/ruview-motion
+Clear motion:    rm   /tmp/ruview-motion
+
+State persists across restarts in ~/.ruview-hap/accessory.state.
+"""
+
+from pathlib import Path
+import os
+import sys
+import time
+import signal
+
+from pyhap.accessory import Accessory, Bridge
+from pyhap.accessory_driver import AccessoryDriver
+from pyhap.const import CATEGORY_SENSOR, CATEGORY_BRIDGE
+
+STATE_DIR = Path(os.path.expanduser("~/.ruview-hap"))
+STATE_DIR.mkdir(exist_ok=True)
+STATE_FILE = STATE_DIR / "accessory.state"
+SETUP_CODE_FILE = STATE_DIR / "setup-code.txt"
+TOGGLE_FILE = Path(os.environ.get("RUVIEW_MOTION_TOGGLE", "/tmp/ruview-motion"))
+
+
+class RuViewMotion(Accessory):
+    category = CATEGORY_SENSOR
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        serv = self.add_preload_service("MotionSensor")
+        self.char_motion = serv.configure_char("MotionDetected")
+        self._last = False
+
+    @Accessory.run_at_interval(1.0)
+    def run(self):
+        present = TOGGLE_FILE.exists()
+        if present != self._last:
+            self.char_motion.set_value(present)
+            self._last = present
+            print(
+                f"[hap-test] MotionDetected -> {present}  (toggle file: {TOGGLE_FILE})",
+                flush=True,
+            )
+
+
+def main() -> int:
+    driver = AccessoryDriver(port=51826, persist_file=str(STATE_FILE))
+
+    bridge = Bridge(driver, "RuView Test Bridge")
+    bridge.category = CATEGORY_BRIDGE
+    bridge.add_accessory(RuViewMotion(driver, "RuView Test Motion"))
+    driver.add_accessory(accessory=bridge)
+
+    setup_code = driver.state.pincode.decode() if hasattr(driver.state.pincode, "decode") else driver.state.pincode
+    SETUP_CODE_FILE.write_text(str(setup_code) + "\n")
+    print(f"[hap-test] HAP bridge advertising as 'RuView Test Bridge'")
+    print(f"[hap-test] iPhone pair flow: Home app -> Add Accessory -> More Options")
+    print(f"[hap-test] Setup code (also in {SETUP_CODE_FILE}):  {setup_code}")
+    print(f"[hap-test] Motion toggle file: {TOGGLE_FILE}")
+    print(f"[hap-test] State persists in: {STATE_FILE}")
+
+    signal.signal(signal.SIGTERM, lambda *_: driver.stop())
+    driver.start()
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())