commit 0a8894f3b22ead84826408fdc3d3fb7209679599
Author: mavxa <mafvacurse@gmail.com>
Date:   Wed Sep 9 16:31:27 2026 +0300

    init

diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,9 @@
+__pycache__/
+*.pyc
+.venv/
+reports/
+.pytest_cache/
+*.pt
+!module3/models/latest.pt
+module3/runs/
+module3/predictions/
diff --git a/README.md b/README.md
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+# mvch — подготовка к ЧВТ-2026
+
+Репозиторий для самостоятельного изучения и тренировок по модулям ЧВТ.
+
+- `module2/module_b.py` — модуль **Б**, навигация РМК-2 по ArUco.
+- `module3/` — модуль **В**, датасет и распознавание инструментов.
+- `module4/` — модуль **Г**, веб-FMS для двух роверов на React/Bun.
+- `module5/` — модуль **Д**, единый сценарий RMC1 + RMC2.
+
+Все актуальные модули находятся в `main`. Ветки `module2`–`module5` сохранены
+как промежуточные этапы разработки.
+
+## Запуск в Ubuntu VM
+
+Нужен установленный официальный симулятор, ROS 2 Jazzy, `rclpy`, `tf2_ros`.
+Дополнительные pip-пакеты и сборка colcon самого решения не нужны.
+
+Терминал 1 — штатный симулятор (один экземпляр):
+
+```bash
+source /opt/ros/jazzy/setup.bash
+source ~/ros2_ws/install/setup.bash
+ros2 launch ar_webots_fms_ros2 module2.launch.py
+```
+
+Терминал 2 — решение:
+
+```bash
+cd ~/mvch
+git pull --ff-only
+source /opt/ros/jazzy/setup.bash
+source ~/ros2_ws/install/setup.bash
+python3 module2/module_b.py --target 14 --sim
+```
+
+1. Робот должен стоять **центром над известной меткой**. Начальная ориентация любая:
+   она определяется по TF метки. Программа ждёт odometry, lidar, TF и ArUco.
+2. Программа печатает `ROUTE`. Эксперт фиксирует маршрут; **Enter** разрешает движение.
+3. После `TARGET_REACHED` робот стоит. Выставьте препятствие штатным инструментом симулятора.
+4. **Enter** строит и выводит обратный маршрут с учётом видимого препятствия.
+5. Ещё **Enter** разрешает возврат. Успех — `MISSION_FINISHED`.
+
+Если за время подтверждения маршрут изменился, программа покажет новый и снова дождётся Enter.
+Время паузы между этапами не входит в `movement_seconds`.
+
+Команды в том же терминале: `stop`, `resume`, `return`, `go`, `quit`.
+Ctrl+C немедленно инициирует остановку и завершение с ненулевым кодом.
+Для внешнего интерфейса: `/mvch/command` (`std_msgs/String`), `/mvch/emergency_stop`
+(`std_msgs/Bool`, true фиксирует стоп), `/mvch/status` (JSON в `std_msgs/String`).
+После потери датчиков программа останавливается и требует `resume`.
+
+Автоматическая тренировка без подтверждений (только симулятор):
+
+```bash
+python3 module2/module_b.py --target 14 --sim --auto --return-delay 10
+```
+
+Цель координатами и конечная ориентация, в системе **поля**:
+
+```bash
+python3 module2/module_b.py --xy -2 2 --target-yaw 1.57 --sim
+```
+
+На физическом роботе `--sim` не указывать. Перед переносом обязательно проверить
+размеры корпуса, тормозной путь, TF, шаг и ориентации графа, датчики и аппаратную
+аварийную остановку. Испытания в Webots не подтверждают готовность к реальному полю.
+У штатного Webots-драйвера нет таймаута последней команды: при SIGKILL/обрыве питания
+процесса программная остановка не гарантируется; остановить симулятор вручную.
+
+## Как устроен код
+
+Весь модуль находится в одном файле `module2/module_b.py`: сверху параметры поля и
+скоростей, затем геометрия и Дейкстра, ниже ROS-узел, безопасность и логи.
+
+Читайте в таком порядке: `Field.route` → `localize` → `scan_points` → `plan` → `drive` → `tick`.
+
+Координаты штатного поля: `0=(0,0)`, `6=(-1,0)`, `1=(0,1)`.
+Поворот `yaw` каждой метки — ориентация её TF-системы относительно поля.
+Измеренное положение метки в odom сравнивается с её известным положением на поле;
+так получаем преобразование `map_from_odom`. Между метками движение идёт по одометрии.
+У каждой промежуточной точки нужна свежая метка и попадание в допуск; «успех по таймауту» отсутствует.
+
+Лидар переводится через TF с учётом `angle_min`, `angle_increment` и времени скана.
+У текущего симулятора `laser_merged` повёрнут относительно корпуса на **120°**.
+Планировщик исключает рёбра, проходящие слишком близко к точкам препятствий.
+Он не знает ID или место будущего препятствия заранее и сам ничего не спавнит.
+Если преграда появилась во время движения, робот тормозит, возвращается задним ходом
+к предыдущему маркеру по своему ребру и публикует новый маршрут `ROUTE_REPLANNED`.
+Если отступить безопасно нельзя, он стоит и завершает попытку по таймауту.
+
+Размеры сетки, шаг и известные занятые клетки задаются константами `ROWS`, `COLS`,
+`MARKER_SPACING`, `BLOCKED_MARKERS` в начале скрипта. Все длины — метры.
+
+## Проверки и логи
+
+```bash
+python3 module2/module_b.py --target 14 --dry-run
+```
+
+`reports/module_b_*.jsonl` содержат маршрут, движение, ошибки, препятствия,
+точность попадания по меткам и время. Логи исключены из Git.
+
+Условия финального КЗ: один запускаемый скрипт решения; маршруты в терминале и файле;
+явные `movement_start` / `movement_stop`; подтверждение эксперта перед каждым этапом.
+Фактические баллы определяют эксперты по заезду, а не наличие функций в коде.
+
+## Обновление VM с хоста
+
+GitHub: `git@github.com:mavxa/mvch.git` (приватный).
+Для текущей VM используется локальное зеркало хостового Git без передачи ключей GitHub.
+На хосте запущен read-only Git daemon только для этого репозитория:
+
+```bash
+git daemon --reuseaddr --export-all --listen=127.0.0.1 --port=9418 \
+  --base-path=/home/mavxa/zed/chvtFinal /home/mavxa/zed/chvtFinal/mvch
+```
+
+В VM с QEMU user networking хост доступен как `10.0.2.2`:
+
+```bash
+git clone --branch module2 git://10.0.2.2:9418/mvch ~/mvch
+cd ~/mvch
+git pull --ff-only
+```
+
+SSH VM: `ssh -p 2222 -o HostKeyAlias=chvt-3735b9fd mavxa@127.0.0.1`.
+Проброс действует до выключения VM. Восстановить на хосте:
+
+```bash
+virsh -c qemu:///system qemu-monitor-command ubuntu24.04-chvt \
+  --hmp 'hostfwd_add hostnet0 tcp:127.0.0.1:2222-:22'
+```
+
+Пароли и ключи в репозитории не хранятся.
diff --git a/config/.gitkeep b/config/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/module2/module_b.py b/module2/module_b.py
new file mode 100644
index 0000000..0001f4f
--- /dev/null
+++ b/module2/module_b.py
@@ -0,0 +1,621 @@
+#!/usr/bin/env python3
+"""Модуль Б: один запуск, маршрут туда, пауза эксперта, маршрут обратно.
+
+python3 module_b.py --target 14 --sim
+Команды в терминале: Enter / go, stop, resume, return, quit.
+"""
+
+import argparse
+import heapq
+import json
+import math
+import queue
+import re
+import signal
+import sys
+import threading
+import time
+from datetime import datetime
+from pathlib import Path
+
+
+# Все параметры модуля Б находятся здесь. Перед реальным полем меняются в одном месте.
+ROWS = 6
+COLS = 6
+MARKER_SPACING = 1.0
+BLOCKED_MARKERS = set()
+
+ROBOT_NAMESPACE = "RMC2"
+MARKER_PREFIX = "aruco_"
+# RMC2.proto: край корпуса находится примерно в 0.373 м от base_link.
+# Четыре сантиметра запаса оставляют проходимым узкий коридор у marker 33.
+ROBOT_HALF_LENGTH = 0.375
+ROBOT_HALF_WIDTH = 0.375
+SAFETY_MARGIN = 0.04
+ROUTE_CLEARANCE = 0.44
+
+MAX_LINEAR = 0.25
+MAX_ANGULAR = 0.45
+LINEAR_ACCEL = 0.35
+ANGULAR_ACCEL = 0.80
+POSITION_TOLERANCE = 0.025
+YAW_TOLERANCE = 0.045
+MOVE_YAW_TOLERANCE = 0.14
+SENSOR_TIMEOUT = 1.5
+MARKER_TIMEOUT = 0.8
+WAYPOINT_TIMEOUT = 50.0
+MISSION_TIMEOUT = 330.0
+
+
+def wrap(angle):
+    return math.atan2(math.sin(angle), math.cos(angle))
+
+
+def clamp(value, low, high):
+    return max(low, min(high, value))
+
+
+def compose(a, b):
+    """Переносит позу b из системы a в её родительскую систему."""
+    x, y, yaw = a
+    c, s = math.cos(yaw), math.sin(yaw)
+    return x + c*b[0] - s*b[1], y + s*b[0] + c*b[1], wrap(yaw+b[2])
+
+
+def inverse(pose):
+    x, y, yaw = pose
+    c, s = math.cos(yaw), math.sin(yaw)
+    return -c*x-s*y, s*x-c*y, -yaw
+
+
+def distance(a, b):
+    return math.hypot(a[0]-b[0], a[1]-b[1])
+
+
+def segment_distance(point, a, b):
+    dx, dy = b[0]-a[0], b[1]-a[1]
+    length2 = dx*dx+dy*dy
+    if length2 == 0:
+        return distance(point, a)
+    t = clamp(((point[0]-a[0])*dx+(point[1]-a[1])*dy)/length2, 0, 1)
+    return distance(point, (a[0]+t*dx, a[1]+t*dy))
+
+
+class Field:
+    """Регулярная сетка ArUco и кратчайший путь по ней."""
+
+    def __init__(self):
+        self.poses = {}
+        self.graph = {}
+        for row in range(ROWS):
+            for col in range(COLS):
+                marker = row*COLS+col
+                self.poses[marker] = (-row*MARKER_SPACING, col*MARKER_SPACING, 0.0)
+                self.graph[marker] = [
+                    r*COLS+c for r, c in
+                    ((row+1, col), (row, col+1), (row-1, col), (row, col-1))
+                    if 0 <= r < ROWS and 0 <= c < COLS
+                ]
+
+    def nearest(self, x, y):
+        return min(self.poses, key=lambda marker: distance((x, y), self.poses[marker]))
+
+    def route(self, start, goal, obstacle_points=(), forbidden_edges=()):
+        """Дейкстра: кратчайший по длине свободный путь."""
+        if start not in self.poses or goal not in self.poses:
+            raise ValueError("ID старта или цели отсутствует в графе")
+        if start in BLOCKED_MARKERS or goal in BLOCKED_MARKERS:
+            raise ValueError("Старт или цель заблокированы")
+
+        forbidden = {frozenset(edge) for edge in forbidden_edges}
+        costs = {start: 0.0}
+        parents = {start: None}
+        queue_path = [(0.0, start)]
+        while queue_path:
+            cost, current = heapq.heappop(queue_path)
+            if cost > costs[current]:
+                continue
+            if current == goal:
+                path = []
+                while current is not None:
+                    path.append(current)
+                    current = parents[current]
+                return path[::-1]
+            for neighbor in self.graph[current]:
+                edge = frozenset((current, neighbor))
+                if neighbor in BLOCKED_MARKERS or edge in forbidden:
+                    continue
+                a, b = self.poses[current], self.poses[neighbor]
+                if any(segment_distance(p, a, b) < ROUTE_CLEARANCE for p in obstacle_points):
+                    continue
+                new_cost = cost+distance(a, b)
+                if new_cost < costs.get(neighbor, math.inf):
+                    costs[neighbor] = new_cost
+                    parents[neighbor] = current
+                    heapq.heappush(queue_path, (new_cost, neighbor))
+        raise ValueError(f"Нет безопасного маршрута {start} -> {goal}")
+
+
+def arguments():
+    parser = argparse.ArgumentParser(description=__doc__)
+    target = parser.add_mutually_exclusive_group(required=True)
+    target.add_argument("--target", type=int, help="ID целевой метки")
+    target.add_argument("--xy", nargs=2, type=float, help="Координаты цели на карте, метры")
+    parser.add_argument("--sim", action="store_true", help="Часы Webots /clock")
+    parser.add_argument("--target-yaw", type=float, help="Ориентация на цели в системе поля, рад")
+    parser.add_argument("--auto", action="store_true", help="Только тренировка: без команд эксперта")
+    parser.add_argument("--return-delay", type=float, default=5.0, help="Пауза --auto, секунд симуляции")
+    parser.add_argument("--dry-run", action="store_true", help="Показать путь без ROS и без движения")
+    parser.add_argument("--start", type=int, default=0, help="Старт только для --dry-run")
+    args = parser.parse_args()
+    if args.auto and not args.sim:
+        parser.error("--auto разрешён только с --sim")
+    if args.return_delay < 0 or not math.isfinite(args.return_delay):
+        parser.error("--return-delay должен быть конечным неотрицательным числом")
+    if args.target_yaw is not None and not math.isfinite(args.target_yaw):
+        parser.error("--target-yaw должен быть конечным числом")
+    if args.xy and not all(math.isfinite(v) for v in args.xy):
+        parser.error("--xy должен содержать конечные числа")
+    return args
+
+
+def main():
+    args = arguments()
+    field = Field()
+    target = args.target if args.target is not None else field.nearest(*args.xy)
+    if target not in field.poses or target in BLOCKED_MARKERS:
+        raise SystemExit("Целевая метка отсутствует в графе или заблокирована")
+    if args.dry_run:
+        print("ROUTE", field.route(args.start, target), "TARGET", field.poses[target])
+        return
+
+    import rclpy
+    from geometry_msgs.msg import Twist
+    from nav_msgs.msg import Odometry
+    from rclpy.clock import Clock, ClockType
+    from rclpy.node import Node
+    from rclpy.qos import qos_profile_sensor_data
+    from rclpy.signals import SignalHandlerOptions
+    from rclpy.time import Time
+    from sensor_msgs.msg import LaserScan
+    from std_msgs.msg import Bool, String
+    from tf2_ros import Buffer, TransformListener, TransformException
+
+    def yaw(q):
+        return math.atan2(2*(q.w*q.z+q.x*q.y), 1-2*(q.y*q.y+q.z*q.z))
+
+    def tf_pose(transform):
+        t = transform.transform
+        return t.translation.x, t.translation.y, yaw(t.rotation)
+
+    class Mission(Node):
+        def __init__(self):
+            super().__init__("mvch_module_b")
+            self.set_parameters([rclpy.parameter.Parameter("use_sim_time", value=args.sim)])
+            self.cfg = {
+                "max_linear": MAX_LINEAR, "max_angular": MAX_ANGULAR,
+                "linear_accel": LINEAR_ACCEL, "angular_accel": ANGULAR_ACCEL,
+                "position_tolerance": POSITION_TOLERANCE,
+                "yaw_tolerance": YAW_TOLERANCE,
+                "move_yaw_tolerance": MOVE_YAW_TOLERANCE,
+                "sensor_timeout": SENSOR_TIMEOUT, "marker_timeout": MARKER_TIMEOUT,
+                "waypoint_timeout": WAYPOINT_TIMEOUT, "mission_timeout": MISSION_TIMEOUT,
+            }
+            self.robot = {
+                "namespace": ROBOT_NAMESPACE, "marker_prefix": MARKER_PREFIX,
+                "clearance": ROUTE_CLEARANCE, "half_length": ROBOT_HALF_LENGTH,
+                "half_width": ROBOT_HALF_WIDTH, "safety_margin": SAFETY_MARGIN,
+            }
+            ns = ROBOT_NAMESPACE.strip("/")
+            self.base, self.odom_frame = f"{ns}/base_link", f"{ns}/odom"
+            self.buffer = Buffer()
+            self.listener = TransformListener(self.buffer, self)
+            self.pub = self.create_publisher(Twist, f"/{ns}/cmd_vel", 1)
+            self.status_pub = self.create_publisher(String, "/mvch/status", 10)
+            self.create_subscription(Odometry, f"/{ns}/odometry", self.on_odom, qos_profile_sensor_data)
+            self.create_subscription(LaserScan, f"/{ns}/scan", self.on_scan, qos_profile_sensor_data)
+            self.create_subscription(String, f"/{ns}/aruco_id", self.on_marker, 10)
+            self.create_subscription(Bool, "/mvch/emergency_stop", self.on_stop, 10)
+            self.create_subscription(String, "/mvch/command", lambda m: self.commands.put(m.data), 10)
+            self.commands = queue.Queue()
+            self.state, self.leg = "WAIT_SENSORS", "outbound"
+            self.odom = self.map_from_odom = self.pose = None
+            self.odom_wall = self.scan_wall = 0.0
+            self.scan = None
+            self.points, self.body_points = [], []
+            self.lidar_tf_wall = 0.0
+            self.lidar_tf_error = "TF лидара ещё не получен"
+            self.marker = None
+            self.marker_wall = self.marker_stamp = 0.0
+            self.marker_distance = math.inf
+            self.start = self.current = None
+            self.start_yaw = 0.0
+            self.goal, self.route, self.index = target, [], 0
+            self.forbidden = set()
+            self.paused = False
+            self.terminal = False
+            self.failed = False
+            self.v = self.w = 0.0
+            self.last_sim = self.now()
+            self.last_wall = self.clock_wall = time.monotonic()
+            self.last_clock = self.last_sim
+            self.leg_started = self.waypoint_started = self.last_sim
+            self.total_time = 0.0
+            self.last_status = 0.0
+            self.wait_reason = ""
+            log_dir = Path(__file__).parent / "reports"
+            log_dir.mkdir(exist_ok=True)
+            self.log_path = log_dir / f"module_b_{datetime.now():%Y%m%d_%H%M%S_%f}.jsonl"
+            self.log_file = self.log_path.open("a", encoding="utf-8", buffering=1)
+            # Таймер на монотонных часах: остановка сработает даже при паузе /clock.
+            self.timer = self.create_timer(0.05, self.tick, clock=Clock(clock_type=ClockType.STEADY_TIME))
+            self.log("READY", target=target, config="constants in module_b.py", sim=args.sim,
+                     instructions="Enter/go: старт; return: построить возврат; stop/resume; quit")
+
+        def now(self):
+            return self.get_clock().now().nanoseconds / 1e9
+
+        def log(self, event, **data):
+            item = dict(time=datetime.now().isoformat(timespec="milliseconds"),
+                        sim_time=round(self.now(), 3), event=event, leg=self.leg, **data)
+            line = json.dumps(item, ensure_ascii=False)
+            print(line, flush=True)
+            self.log_file.write(line+"\n")
+
+        def on_odom(self, msg):
+            p = msg.pose.pose
+            pose = p.position.x, p.position.y, yaw(p.orientation)
+            if all(math.isfinite(v) for v in pose):
+                self.odom, self.odom_wall = pose, time.monotonic()
+
+        def on_scan(self, msg):
+            # Пустой/повреждённый скан не считается свободным пространством.
+            if not msg.ranges or msg.angle_increment == 0:
+                return
+            if not any(math.isfinite(r) and msg.range_min <= r <= msg.range_max for r in msg.ranges):
+                return
+            self.scan, self.scan_wall = msg, time.monotonic()
+
+        def on_marker(self, msg):
+            match = re.fullmatch(re.escape(MARKER_PREFIX)+r"(\d+)", msg.data.strip())
+            if not match and msg.data.strip().isdigit():
+                marker = int(msg.data.strip())
+            elif match:
+                marker = int(match[1])
+            else:
+                return
+            if marker in field.poses:
+                self.marker, self.marker_wall = marker, time.monotonic()
+
+        def on_stop(self, msg):
+            if msg.data:
+                self.paused = True
+                self.stop()
+                self.log("EMERGENCY_STOP")
+            # false сам по себе не разрешает движение: требуется resume.
+
+        def localize(self):
+            if self.odom is None or self.marker is None:
+                return
+            frame = MARKER_PREFIX+str(self.marker)
+            try:
+                transform = self.buffer.lookup_transform(self.odom_frame, frame, Time())
+                stamp = transform.header.stamp.sec+transform.header.stamp.nanosec/1e9
+                if not 0 <= self.now()-stamp < self.cfg["marker_timeout"]:
+                    return
+                if time.monotonic()-self.marker_wall > self.cfg["sensor_timeout"]:
+                    return
+                odom_marker = tf_pose(transform)
+                self.marker_distance = distance(odom_marker, self.odom)
+                if stamp <= self.marker_stamp:
+                    return
+                correction = compose(field.poses[self.marker], inverse(odom_marker))
+                if self.map_from_odom is not None:
+                    old_pose = compose(self.map_from_odom, self.odom)
+                    new_pose = compose(correction, self.odom)
+                    if distance(old_pose, new_pose) > 0.4 or abs(wrap(old_pose[2]-new_pose[2])) > 0.6:
+                        return  # Не принимаем скачок распознавания; таймаут остановит у метки.
+                self.map_from_odom, self.marker_stamp = correction, stamp
+            except TransformException:
+                pass
+
+        def scan_points(self):
+            scan = self.scan
+            try:
+                # В этом симуляторе laser_merged повёрнут на 120 градусов!
+                mount = tf_pose(self.buffer.lookup_transform(self.base, scan.header.frame_id, Time()))
+                # Последний TF достаточно свежий: scan проверяется отдельно по wall-clock.
+                # Запрос строго по stamp иногда попадает между двумя odom TF и кратко падает.
+                at_scan = tf_pose(self.buffer.lookup_transform(self.odom_frame, self.base, Time()))
+            except TransformException as error:
+                self.lidar_tf_error = str(error)
+                return False
+            scan_in_map = compose(compose(self.map_from_odom, at_scan), mount)
+            body_from_map = inverse(self.pose)
+            points = {}
+            for i, r in enumerate(scan.ranges):
+                if not math.isfinite(r) or not scan.range_min <= r <= scan.range_max:
+                    continue
+                angle = scan.angle_min+i*scan.angle_increment
+                p = compose(scan_in_map, (r*math.cos(angle), r*math.sin(angle), 0))[:2]
+                b = compose(body_from_map, (*p, 0))
+                if abs(b[0]) < self.robot["half_length"] and abs(b[1]) < self.robot["half_width"]:
+                    continue  # собственный корпус, не внешнее препятствие
+                points[(round(p[0]/0.04), round(p[1]/0.04))] = p
+            self.points = list(points.values())
+            self.body_points = [compose(body_from_map, (*p, 0)) for p in self.points]
+            self.lidar_tf_wall = time.monotonic()
+            self.lidar_tf_error = ""
+            return True
+
+        def plan(self):
+            self.stop()
+            try:
+                self.route = field.route(
+                    self.current, self.goal, self.points, self.forbidden
+                )
+            except ValueError as error:
+                self.abort(str(error))
+                return
+            self.index = 1
+            self.state = "WAIT_GO"
+            direction = "К ЦЕЛИ" if self.leg == "outbound" else "НА СТАРТ"
+            print(f"\nМАРШРУТ {direction}: {' -> '.join(map(str, self.route))}", flush=True)
+            print("Ровер пока стоит. Эксперт проверяет маршрут; Enter/go разрешает движение.\n",
+                  flush=True)
+            self.log("ROUTE", markers=self.route, goal=self.goal)
+            self.log("WAIT_GO", message="Эксперт фиксирует маршрут. Enter/go разрешает движение.")
+
+        def stop(self):
+            self.v = self.w = 0.0
+            self.pub.publish(Twist())
+
+        def abort(self, reason):
+            self.stop()
+            self.failed = self.terminal = True
+            self.state = "FAILED"
+            self.log("FAILED", reason=reason, current=self.current)
+
+        def command(self, command):
+            command = command.strip().lower()
+            if command in ("stop", "s"):
+                self.paused = True
+                self.stop()
+                self.log("EMERGENCY_STOP")
+            elif command == "resume":
+                self.paused = False
+                self.log("RESUME")
+            elif command in ("quit", "q"):
+                self.abort("Остановлено оператором")
+            elif self.state == "WAIT_RETURN" and command in ("", "return", "go"):
+                self.leg, self.goal = "return", self.start
+                self.forbidden.clear()
+                self.plan()
+            elif self.state == "WAIT_GO" and command in ("", "go") and not self.paused:
+                # Новая преграда за время паузы: сначала показать новый маршрут.
+                try:
+                    updated = field.route(
+                        self.current, self.goal, self.points, self.forbidden
+                    )
+                except ValueError as error:
+                    self.abort(str(error))
+                    return
+                if updated != self.route:
+                    self.plan()
+                    return
+                self.state = "DRIVE"
+                self.leg_started = self.waypoint_started = self.now()
+                self.log("movement_start", markers=self.route)
+
+        def blocked_motion(self, v, w):
+            margin = self.robot["safety_margin"]
+            # Тормозной путь + время реакции; размеры считаются от центра корпуса.
+            braking = v*v/(2*self.cfg["linear_accel"])+abs(v)*0.25
+            front = self.robot["half_length"]+margin+braking
+            width = self.robot["half_width"]+margin
+            if abs(v) > 0.001:
+                direction = 1 if v > 0 else -1
+                return any(0 < direction*x < front and abs(y) < width for x, y, _ in self.body_points)
+            if abs(w) > 0.001:
+                return any(math.hypot(x, y) < self.robot["clearance"] for x, y, _ in self.body_points)
+            return False
+
+        def send(self, v, w, dt):
+            if self.blocked_motion(v, w):
+                self.stop()
+                return False
+            self.v += clamp(v-self.v, -self.cfg["linear_accel"]*dt, self.cfg["linear_accel"]*dt)
+            self.w += clamp(w-self.w, -self.cfg["angular_accel"]*dt, self.cfg["angular_accel"]*dt)
+            # Поворот на месте и аварийная остановка не должны оставлять линейный хвост.
+            if v == 0:
+                self.v = 0.0
+            if self.blocked_motion(self.v, self.w):
+                self.stop()
+                return False
+            msg = Twist()
+            msg.linear.x, msg.angular.z = float(self.v), float(self.w)
+            self.pub.publish(msg)
+            return True
+
+        def drive(self, dt):
+            if self.now()-self.waypoint_started > self.cfg["waypoint_timeout"]:
+                self.abort("Таймаут точки: проверить камеру, препятствие и положение робота")
+                return
+            if self.state == "ALIGN":
+                desired = args.target_yaw if self.leg == "outbound" else self.start_yaw
+                error = wrap(desired-self.pose[2])
+                if abs(error) <= self.cfg["yaw_tolerance"]:
+                    self.arrived()
+                else:
+                    self.send(0, clamp(1.4*error, -self.cfg["max_angular"], self.cfg["max_angular"]), dt)
+                return
+            if self.index >= len(self.route) and self.state != "BACKTRACK":
+                if self.leg == "return" or args.target_yaw is not None:
+                    self.state = "ALIGN"
+                else:
+                    self.arrived()
+                return
+            marker = self.current if self.state == "BACKTRACK" else self.route[self.index]
+            target_pose = field.poses[marker]
+            dx, dy = target_pose[0]-self.pose[0], target_pose[1]-self.pose[1]
+            d = math.hypot(dx, dy)
+            fresh = self.marker == marker and 0 <= self.now()-self.marker_stamp < self.cfg["marker_timeout"]
+            if d < self.cfg["position_tolerance"] and fresh and self.marker_distance < 0.04:
+                self.stop()
+                if self.state == "BACKTRACK":
+                    self.log("BACKTRACK_DONE", marker=marker)
+                    try:
+                        self.route = field.route(
+                            self.current, self.goal, self.points, self.forbidden
+                        )
+                    except ValueError as error:
+                        self.abort(str(error))
+                        return
+                    self.index, self.state = 1, "DRIVE"
+                    self.log("ROUTE_REPLANNED", markers=self.route)
+                else:
+                    self.current = marker
+                    self.index += 1
+                    self.log("WAYPOINT", marker=marker, pose=list(self.pose), marker_error=self.marker_distance)
+                self.waypoint_started = self.now()
+                return
+            if d < self.cfg["position_tolerance"] and not fresh:
+                self.stop()  # Без свежей метки достижение НЕ засчитываем.
+                return
+            error = wrap(math.atan2(dy, dx)-self.pose[2])
+            # Если следующая метка сзади, едем к ней задним ходом. Это не даёт
+            # роботу разворачиваться корпусом вплотную к стеллажам у marker 33.
+            reverse = self.state == "BACKTRACK" or abs(error) > math.pi/2
+            if reverse:
+                error = wrap(error-math.pi)
+            v = min(self.cfg["max_linear"], 0.8*d)
+            if reverse:
+                v = -min(v, 0.12)
+            if abs(error) > self.cfg["move_yaw_tolerance"]:
+                v = 0
+            w = clamp(1.5*error, -self.cfg["max_angular"], self.cfg["max_angular"])
+            if not self.send(v, w, dt) and self.state == "DRIVE":
+                edge = (self.current, marker)
+                self.forbidden.add(edge)
+                self.log("OBSTACLE", edge=edge, pose=list(self.pose))
+                # Вернуться по уже пройденному ребру, затем ехать по новому графу.
+                self.state = "BACKTRACK"
+                self.waypoint_started = self.now()
+                self.log("BACKTRACK", marker=self.current)
+
+        def arrived(self):
+            self.stop()
+            elapsed = self.now()-self.leg_started
+            self.total_time += elapsed
+            self.log("movement_stop", marker=self.goal, seconds=round(elapsed, 3))
+            if self.leg == "outbound":
+                self.state = "WAIT_RETURN"
+                self.return_wait = self.now()
+                self.log("TARGET_REACHED", marker=self.goal,
+                         message="Выставьте препятствие. return/Enter строит обратный маршрут.")
+            else:
+                self.state, self.terminal = "FINISHED", True
+                self.log("MISSION_FINISHED", marker=self.start, movement_seconds=round(self.total_time, 3))
+
+        def tick(self):
+            wall, now = time.monotonic(), self.now()
+            dt = clamp(now-self.last_sim, 0, 0.15)
+            if now < self.last_sim-0.01:
+                self.abort("Часы симуляции сброшены; запустите новую попытку")
+                return
+            if now != self.last_clock:
+                self.clock_wall, self.last_clock = wall, now
+            self.last_sim = now
+            self.localize()
+            if self.map_from_odom is not None and self.odom is not None:
+                self.pose = compose(self.map_from_odom, self.odom)
+            reasons = []
+            if self.pose is None:
+                reasons.append("нет локализации")
+            if self.scan is None:
+                reasons.append("нет scan")
+            if wall-self.odom_wall >= SENSOR_TIMEOUT:
+                reasons.append(f"odometry старше {wall-self.odom_wall:.2f}с")
+            if wall-self.scan_wall >= SENSOR_TIMEOUT:
+                reasons.append(f"scan старше {wall-self.scan_wall:.2f}с")
+            if wall-self.clock_wall >= SENSOR_TIMEOUT:
+                reasons.append(f"clock старше {wall-self.clock_wall:.2f}с")
+            healthy = not reasons
+            if healthy and not self.scan_points():
+                # Один краткий промах TF не должен ставить миссию на вечную паузу.
+                if wall-self.lidar_tf_wall >= SENSOR_TIMEOUT:
+                    reasons.append("TF лидара: "+self.lidar_tf_error)
+                    healthy = False
+            if not healthy:
+                self.stop()
+                if self.state != "WAIT_SENSORS" and not self.paused:
+                    self.paused = True
+                    self.log("SENSOR_STOP", reason="; ".join(reasons),
+                             message="После восстановления введите resume")
+            while not self.commands.empty():
+                command = self.commands.get_nowait()
+                if healthy or command.strip() in ("stop", "quit", "q", "s"):
+                    self.command(command)
+            if not healthy or self.paused or self.terminal:
+                self.stop()
+                return
+            if wall-self.last_status > 1:
+                msg = String()
+                msg.data = json.dumps(dict(state=self.state, leg=self.leg, pose=self.pose,
+                                           current=self.current, route=self.route))
+                self.status_pub.publish(msg)
+                self.last_status = wall
+            if self.state == "WAIT_SENSORS":
+                if self.marker_distance > 0.04:
+                    return
+                self.start = self.current = self.marker
+                self.start_yaw = self.pose[2]
+                self.log("LOCALIZED", marker=self.start, pose=list(self.pose))
+                self.plan()
+            elif self.state == "WAIT_GO":
+                self.stop()
+                if args.auto:
+                    self.command("go")
+            elif self.state == "WAIT_RETURN":
+                self.stop()
+                if args.auto and now-self.return_wait >= args.return_delay:
+                    self.command("return")
+            else:
+                if self.total_time+now-self.leg_started > self.cfg["mission_timeout"]:
+                    self.abort("Превышено время миссии")
+                else:
+                    self.drive(dt)
+
+    rclpy.init(signal_handler_options=SignalHandlerOptions.NO)
+    node = Mission()
+    quitting = threading.Event()
+    signal.signal(signal.SIGINT, lambda *_: quitting.set())
+    signal.signal(signal.SIGTERM, lambda *_: quitting.set())
+
+    def read_commands():
+        for line in sys.stdin:
+            node.commands.put(line)
+
+    threading.Thread(target=read_commands, daemon=True).start()
+    try:
+        while rclpy.ok() and not quitting.is_set() and not node.terminal:
+            rclpy.spin_once(node, timeout_sec=0.05)
+        if quitting.is_set() and not node.terminal:
+            node.abort("SIGINT/SIGTERM")
+    except Exception as error:
+        node.abort(f"{type(error).__name__}: {error}")
+        raise
+    finally:
+        # Перед закрытием соединения несколько раз отправить настоящий нулевой Twist.
+        for _ in range(5):
+            node.stop()
+            time.sleep(0.04)
+        node.log_file.close()
+        node.destroy_node()
+        rclpy.shutdown()
+    if node.failed:
+        raise SystemExit(1)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/module3/README.md b/module3/README.md
new file mode 100644
index 0000000..ba152b7
--- /dev/null
+++ b/module3/README.md
@@ -0,0 +1,172 @@
+# Модуль В: датасет и YOLO
+
+Камера: `/RMC1/arm95/camera_gripper/image_color` (`1600x1200`).
+
+Основной зачетный скрипт: `module3.py`. Он показывает обработанный видеопоток,
+определяет координаты выбранной детали относительно `Base_link`, захватывает ее,
+возвращает ARM95 в исходное положение с деталью, кладет деталь обратно на
+освободившееся место и снова возвращает руку в исходное положение.
+После первого безопасного подхода координаты повторно уточняются по близкому
+кадру, поэтому рука не едет к детали только по одному дальнему измерению.
+Если в кадре несколько деталей одного класса, скрипт выбирает ближайшую к базе.
+
+## Запуск задания
+
+В VM один раз создайте окружение с доступом к системным пакетам ROS:
+
+```bash
+cd ~/scripts/mvch/module3
+sudo apt install python3-venv
+python3 -m venv --system-site-packages .venv
+.venv/bin/pip install torch torchvision --index-url https://download.pytorch.org/whl/cpu
+.venv/bin/pip install -r requirements.txt tqdm ultralytics-thop
+```
+
+Если окружение уже обновило NumPy до 2.x и `cv_bridge` ругается на ABI:
+
+```bash
+.venv/bin/pip install --force-reinstall "numpy<2" "opencv-python<4.12" lark
+```
+
+`lark` — зависимость ROS 2 Launch/MoveIt, а не часть алгоритма распознавания.
+Ограничение `numpy<2` нужно потому, что бинарный `cv_bridge` в этом образе ROS
+собран с NumPy 1.x.
+
+Если venv уже был создан без `--system-site-packages`, пересоздавать его не
+нужно. Включите системные зависимости ROS и заново активируйте окружение:
+
+```bash
+sed -i 's/include-system-site-packages = false/include-system-site-packages = true/' .venv/pyvenv.cfg
+deactivate
+source .venv/bin/activate
+```
+
+Запустите симулятор модуля В, затем в новом терминале:
+
+```bash
+source /opt/ros/jazzy/setup.bash
+source ~/ros2_ws/install/setup.bash
+cd ~/scripts/mvch
+module3/.venv/bin/python module3/module3.py --target 1
+```
+
+Цели: `1/hammer`, `2/wrench`, `3/pliers`. После того как эксперт зафиксировал
+видеопоток, нажмите `G` или `Space` в окне либо введите `g` и
+нажмите Enter в терминале. `Esc` останавливает скрипт до начала движения.
+
+Сначала обязательно проверьте только координаты:
+
+```bash
+module3/.venv/bin/python module3/module3.py --target hammer --dry-run
+```
+
+В режиме `--dry-run` подтверждать запуск клавишей не нужно: скрипт завершится
+после первой валидной детекции и вывода рассчитанных координат.
+
+Для проверки через SSH без окна:
+
+```bash
+module3/.venv/bin/python module3/module3.py --target hammer --dry-run --no-window
+```
+
+Геометрию реального стенда нельзя брать из симулятора вслепую. Перед зачетом
+измерьте и подстройте `--plane-z`, `--pick-z` и `--approach-z`. По умолчанию
+деталь возвращается туда, откуда была взята; другую свободную точку можно задать
+через `--drop-x X --drop-y Y`.
+
+События распознавания, координаты, построение движений и состояния схвата
+одновременно выводятся в терминал и сохраняются в `module3/logs/*.log`.
+Туда же пишутся контрольные кадры `*_gripped.jpg`, `*_with_detail.jpg` и
+`*_finished.jpg`.
+
+## Что размечать
+
+Классы строго в таком написании:
+
+```text
+hammer
+pliers
+wrench
+```
+
+Рамкой выделяйте изображение инструмента на карточке, а класс задавайте по
+картинке. Используйте одинаковый стиль разметки в симуляторе и на реальном поле.
+Размечайте каждый видимый экземпляр: в штатной сцене две карточки `pliers`, одна
+`hammer` и одна `wrench`. Классы `box` и `background` не создавайте.
+
+В Roboflow создайте `Object Detection` project, загрузите `dataset/raw/*.jpg`,
+разметьте кадры, сделайте split 70/20/10 и экспортируйте в формате YOLO11.
+Распакуйте экспорт в `module3/training`: там должны появиться `data.yaml` и
+каталоги `train`, `valid`, `test`. Не переставляйте номера классов в `data.yaml`:
+они назначаются Roboflow и должны совпадать с ID внутри label-файлов.
+
+Локально в `dataset/raw` могут лежать собранные кадры, но Git их намеренно
+игнорирует: после клонирования датасет нужно перенести отдельно или собрать
+заново. Расположение объектов менять не требуется: дополнительные повороты и
+сдвиги выполняются аугментациями во время обучения.
+
+## Сбор кадров из симулятора
+
+```bash
+source /opt/ros/jazzy/setup.bash
+source ~/ros2_ws/install/setup.bash
+python3 module3/capture_dataset.py --count 30
+```
+
+Во время сбора плавно меняйте положение RMC1/манипулятора. Скрипт пропускает почти
+одинаковые кадры. Для одиночного снимка используйте `--count 1 --min-change 0`.
+
+## Установка для обучения
+
+```bash
+cd module3
+python3 -m venv .venv
+source .venv/bin/activate
+python -m pip install -U pip
+pip install -r requirements.txt
+```
+
+Ultralytics ставит PyTorch как зависимость. Для конкретной NVIDIA CUDA или AMD
+ROCm лучше сначала установить подходящую сборку PyTorch, затем `requirements.txt`.
+
+## Обучение
+
+Если часть объектов была размечена полигонами, один раз приведите экспорт к
+обычным bounding boxes:
+
+```bash
+python prepare_dataset.py
+```
+
+Для теста используются максимум 30 эпох и early stopping после 7 эпох без
+улучшения validation metrics.
+
+Автовыбор: NVIDIA CUDA / AMD ROCm, а если GPU недоступен — CPU:
+
+```bash
+python train.py --device auto
+```
+
+Только CPU (подойдёт на AMD без настроенного ROCm):
+
+```bash
+python train.py --device cpu --batch 4 --workers 2
+```
+
+Принудительно NVIDIA CUDA или настроенный AMD ROCm:
+
+```bash
+python train.py --device cuda
+```
+
+Лучшие веса сохраняются в `training/runs/tools_yolo11n/weights/best.pt` и
+автоматически копируются в `models/latest.pt` для простого запуска проверки.
+
+## Проверка на фотографии
+
+```bash
+python test_model.py training/test/images/example.jpg --device cpu
+```
+
+С `--show` откроется окно. Независимо от окна размеченная фотография сохраняется
+в `predictions/`: на ней видны bbox, названия классов и confidence.
diff --git a/module3/capture_dataset.py b/module3/capture_dataset.py
new file mode 100755
index 0000000..96a6490
--- /dev/null
+++ b/module3/capture_dataset.py
@@ -0,0 +1,115 @@
+#!/usr/bin/env python3
+"""Сохраняет непохожие кадры с камеры захвата RMC1 для разметки."""
+
+import argparse
+import time
+from datetime import datetime
+from pathlib import Path
+
+
+HERE = Path(__file__).resolve().parent
+
+
+def arguments():
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument(
+        "--topic",
+        default="/RMC1/arm95/camera_gripper/image_color",
+        help="ROS-топик sensor_msgs/Image",
+    )
+    parser.add_argument("--output", default="dataset/raw", help="Каталог для JPG")
+    parser.add_argument("--count", type=int, default=30, help="Сколько кадров сохранить")
+    parser.add_argument("--interval", type=float, default=0.5, help="Минимум секунд между JPG")
+    parser.add_argument(
+        "--min-change",
+        type=float,
+        default=1.0,
+        help="Минимальное среднее изменение пикселя; 0 сохраняет одинаковые кадры",
+    )
+    parser.add_argument("--timeout", type=float, default=180.0, help="Общий таймаут")
+    parser.add_argument("--jpeg-quality", type=int, default=95)
+    args = parser.parse_args()
+    if args.count < 1 or args.interval < 0 or args.timeout <= 0:
+        parser.error("count >= 1, interval >= 0, timeout > 0")
+    if not 1 <= args.jpeg_quality <= 100 or args.min_change < 0:
+        parser.error("jpeg-quality должен быть 1..100, min-change >= 0")
+    return args
+
+
+def main():
+    args = arguments()
+    try:
+        import cv2
+        import numpy as np
+        import rclpy
+        from cv_bridge import CvBridge
+        from rclpy.node import Node
+        from rclpy.qos import qos_profile_sensor_data
+        from sensor_msgs.msg import Image
+    except ImportError as error:
+        raise SystemExit(
+            f"Нет ROS/OpenCV зависимости: {error}. Запускайте после source ROS 2 в VM."
+        )
+
+    output = Path(args.output).expanduser()
+    if not output.is_absolute():
+        output = HERE / output
+    output.mkdir(parents=True, exist_ok=True)
+
+    class Collector(Node):
+        def __init__(self):
+            super().__init__("mvch_dataset_collector")
+            self.bridge = CvBridge()
+            self.saved = 0
+            self.previous = None
+            self.last_save = 0.0
+            self.create_subscription(Image, args.topic, self.on_image, qos_profile_sensor_data)
+
+        def on_image(self, message):
+            now = time.monotonic()
+            if now - self.last_save < args.interval:
+                return
+            try:
+                frame = self.bridge.imgmsg_to_cv2(message, desired_encoding="bgr8")
+            except Exception as error:
+                self.get_logger().error(f"Не удалось преобразовать кадр: {error}")
+                return
+            preview = cv2.resize(cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY), (64, 48))
+            if self.previous is not None:
+                change = float(np.mean(cv2.absdiff(preview, self.previous)))
+                if change < args.min_change:
+                    return
+            filename = output / f"frame_{datetime.now():%Y%m%d_%H%M%S_%f}_{self.saved:03d}.jpg"
+            if not cv2.imwrite(
+                str(filename), frame, [cv2.IMWRITE_JPEG_QUALITY, args.jpeg_quality]
+            ):
+                self.get_logger().error(f"Не удалось записать {filename}")
+                return
+            self.previous = preview
+            self.last_save = now
+            self.saved += 1
+            print(f"[{self.saved}/{args.count}] {filename}", flush=True)
+
+    rclpy.init()
+    node = Collector()
+    started = time.monotonic()
+    print(f"Камера: {args.topic}")
+    print("Плавно двигайте RMC1 или манипулятор, чтобы ракурсы менялись.")
+    try:
+        while rclpy.ok() and node.saved < args.count:
+            if time.monotonic() - started >= args.timeout:
+                break
+            rclpy.spin_once(node, timeout_sec=0.2)
+    except KeyboardInterrupt:
+        pass
+    finally:
+        saved = node.saved
+        node.destroy_node()
+        rclpy.shutdown()
+    print(f"Готово: сохранено {saved} кадров в {output}")
+    if saved == 0:
+        raise SystemExit(1)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/module3/dataset/.gitignore b/module3/dataset/.gitignore
new file mode 100644
index 0000000..16b9d46
--- /dev/null
+++ b/module3/dataset/.gitignore
@@ -0,0 +1 @@
+raw
diff --git a/module3/dataset/classes.txt b/module3/dataset/classes.txt
new file mode 100644
index 0000000..3dee804
--- /dev/null
+++ b/module3/dataset/classes.txt
@@ -0,0 +1,3 @@
+hammer
+pliers
+wrench
diff --git a/module3/dataset/data.example.yaml b/module3/dataset/data.example.yaml
new file mode 100644
index 0000000..dab1809
--- /dev/null
+++ b/module3/dataset/data.example.yaml
@@ -0,0 +1,9 @@
+path: .
+train: train/images
+val: valid/images
+test: test/images
+
+names:
+  0: hammer
+  1: pliers
+  2: wrench
diff --git a/module3/logs/.gitignore b/module3/logs/.gitignore
new file mode 100644
index 0000000..d6b7ef3
--- /dev/null
+++ b/module3/logs/.gitignore
@@ -0,0 +1,2 @@
+*
+!.gitignore
diff --git a/module3/models/latest.pt b/module3/models/latest.pt
new file mode 100644
index 0000000..61af0ca
Binary files /dev/null and b/module3/models/latest.pt differ
diff --git a/module3/module3.py b/module3/module3.py
new file mode 100644
index 0000000..1559ebd
--- /dev/null
+++ b/module3/module3.py
@@ -0,0 +1,691 @@
+#!/usr/bin/env python3
+"""Модуль В: распознать деталь, взять ARM95 и вернуть на полку."""
+
+import argparse
+import json
+import math
+import os
+import sys
+import threading
+import time
+from datetime import datetime
+from pathlib import Path
+from tempfile import NamedTemporaryFile
+
+
+HERE = Path(__file__).resolve().parent
+TARGETS = {"1": "hammer", "2": "wrench", "3": "pliers"}
+
+
+class EventLog:
+    def __init__(self):
+        directory = HERE / "logs"
+        directory.mkdir(parents=True, exist_ok=True)
+        self.path = directory / f"module3_{datetime.now():%Y%m%d_%H%M%S}.log"
+
+    def write(self, event, **fields):
+        record = {"time": datetime.now().isoformat(timespec="milliseconds"), "event": event}
+        record.update(fields)
+        line = json.dumps(record, ensure_ascii=False)
+        print(line, flush=True)
+        with self.path.open("a", encoding="utf-8") as stream:
+            stream.write(line + "\n")
+
+    def image_path(self, suffix):
+        return self.path.with_name(f"{self.path.stem}_{suffix}.jpg")
+
+
+def local_path(value):
+    path = Path(value).expanduser()
+    return path if path.is_absolute() else HERE / path
+
+
+def target_name(value):
+    value = value.strip().lower()
+    return TARGETS.get(value, value)
+
+
+def arguments():
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--target", help="1/hammer, 2/wrench или 3/pliers")
+    parser.add_argument("--weights", default="models/latest.pt")
+    parser.add_argument("--topic", default="/RMC1/arm95/camera_gripper/image_color")
+    parser.add_argument("--conf", type=float, default=0.20)
+    parser.add_argument("--imgsz", type=int, default=512)
+    parser.add_argument("--device", default="cpu")
+    parser.add_argument("--timeout", type=float, default=60.0)
+    parser.add_argument(
+        "--plane-z",
+        type=float,
+        default=0.128,
+        help="Высота верхней грани детали относительно Base_link, м",
+    )
+    parser.add_argument("--pick-z", type=float, default=0.210)
+    parser.add_argument("--approach-z", type=float, default=0.38)
+    parser.add_argument("--drop-x", type=float, help="Точка возврата; по умолчанию исходная")
+    parser.add_argument("--drop-y", type=float, help="Точка возврата; по умолчанию исходная")
+    parser.add_argument("--no-window", action="store_true", help="Не открывать видеопоток")
+    parser.add_argument("--auto-start", action="store_true", help="Не ждать клавишу G/Enter")
+    parser.add_argument("--dry-run", action="store_true", help="Только распознавание и координаты")
+    parser.add_argument("--plan-only", action="store_true", help="Спланировать подход, не двигать руку")
+    args = parser.parse_args()
+
+    if not 0.0 <= args.conf <= 1.0:
+        parser.error("--conf должен быть от 0 до 1")
+    if args.timeout <= 0 or args.approach_z <= args.pick_z:
+        parser.error("timeout > 0, approach-z должен быть выше pick-z")
+    if (args.drop_x is None) != (args.drop_y is None):
+        parser.error("--drop-x и --drop-y задаются вместе")
+    return args
+
+
+def rotate_vector(vector, quaternion):
+    """Поворот вектора кватернионом geometry_msgs без внешней математики."""
+    x, y, z = vector
+    qx, qy, qz, qw = quaternion
+    tx = 2.0 * (qy * z - qz * y)
+    ty = 2.0 * (qz * x - qx * z)
+    tz = 2.0 * (qx * y - qy * x)
+    return (
+        x + qw * tx + qy * tz - qz * ty,
+        y + qw * ty + qz * tx - qx * tz,
+        z + qw * tz + qx * ty - qy * tx,
+    )
+
+
+def normalize_half_turn(angle, reference=math.pi / 2):
+    """Выбирает эквивалентный yaw (схват симметричен через 180 градусов)."""
+    choices = (angle - math.pi, angle, angle + math.pi)
+    return min(choices, key=lambda item: abs(item - reference))
+
+
+def card_short_axis(frame, xyxy, cv2, np):
+    """Находит направление короткой стороны светлой карточки внутри YOLO bbox."""
+    height, width = frame.shape[:2]
+    x1, y1, x2, y2 = (int(round(value)) for value in xyxy)
+    x1, y1 = max(0, x1), max(0, y1)
+    x2, y2 = min(width, x2), min(height, y2)
+    crop = frame[y1:y2, x1:x2]
+    if crop.size == 0:
+        return None
+
+    hsv = cv2.cvtColor(crop, cv2.COLOR_BGR2HSV)
+    mask = cv2.inRange(hsv, (0, 0, 105), (180, 115, 255))
+    kernel = np.ones((5, 5), np.uint8)
+    mask = cv2.morphologyEx(mask, cv2.MORPH_CLOSE, kernel, iterations=2)
+    contours, _ = cv2.findContours(mask, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
+    if not contours:
+        return None
+
+    crop_area = crop.shape[0] * crop.shape[1]
+    candidates = [contour for contour in contours if cv2.contourArea(contour) > crop_area * 0.12]
+    if not candidates:
+        return None
+    rectangle = cv2.minAreaRect(max(candidates, key=cv2.contourArea))
+    points = cv2.boxPoints(rectangle)
+    edges = [points[(index + 1) % 4] - points[index] for index in range(4)]
+    short_edge = min(edges, key=lambda edge: float(np.linalg.norm(edge)))
+    length = float(np.linalg.norm(short_edge))
+    if length < 2.0:
+        return None
+    return float(short_edge[0] / length), float(short_edge[1] / length)
+
+
+class Detection:
+    def __init__(self, name, confidence, xyxy, short_axis):
+        self.name = name
+        self.confidence = confidence
+        self.xyxy = xyxy
+        self.short_axis = short_axis
+
+    @property
+    def center(self):
+        x1, y1, x2, y2 = self.xyxy
+        return (x1 + x2) / 2.0, (y1 + y2) / 2.0
+
+
+def find_targets(result, frame, requested, cv2, np):
+    found = []
+    if result.boxes is None:
+        return found
+    for box in result.boxes:
+        class_id = int(box.cls.item())
+        name = str(result.names[class_id]).lower()
+        if name != requested:
+            continue
+        confidence = float(box.conf.item())
+        xyxy = tuple(float(value) for value in box.xyxy[0])
+        found.append(Detection(name, confidence, xyxy, card_short_axis(frame, xyxy, cv2, np)))
+    return found
+
+
+def choose_target(node, detections, plane_z):
+    """При одинаковых классах выбирает ближайшую к базе доступную деталь."""
+    reachable = []
+    for detection in detections:
+        try:
+            x, y, _ = estimate_pose(node, detection, plane_z)
+        except Exception:
+            continue
+        reachable.append((math.hypot(x, y), -detection.confidence, detection))
+    if reachable:
+        return min(reachable, key=lambda item: (item[0], item[1]))[2]
+    return max(detections, key=lambda item: item.confidence, default=None)
+
+
+def card_near_center(frame, requested, cv2, np):
+    """На близком кадре находит светлую коробку около центра камеры."""
+    height, width = frame.shape[:2]
+    hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)
+    mask = cv2.inRange(hsv, (0, 0, 115), (180, 110, 255))
+    kernel = np.ones((7, 7), np.uint8)
+    mask = cv2.morphologyEx(mask, cv2.MORPH_CLOSE, kernel, iterations=2)
+    contours, _ = cv2.findContours(mask, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
+
+    candidates = []
+    for contour in contours:
+        rectangle = cv2.minAreaRect(contour)
+        rect_width, rect_height = rectangle[1]
+        rect_area = rect_width * rect_height
+        if rect_area < 2000 or min(rect_width, rect_height) < 20:
+            continue
+        aspect = max(rect_width, rect_height) / min(rect_width, rect_height)
+        if not 1.2 <= aspect <= 4.0:
+            continue
+        center_x, center_y = rectangle[0]
+        distance = math.hypot(center_x - width / 2.0, center_y - height / 2.0)
+        candidates.append((distance, rectangle))
+
+    if not candidates:
+        raise RuntimeError("На близком кадре не найдена коробка")
+    distance, rectangle = min(candidates, key=lambda item: item[0])
+    if distance > min(width, height) * 0.30:
+        raise RuntimeError(f"Коробка слишком далеко от центра кадра: {distance:.0f} px")
+
+    points = cv2.boxPoints(rectangle)
+    edges = [points[(index + 1) % 4] - points[index] for index in range(4)]
+    short_edge = min(edges, key=lambda edge: float(np.linalg.norm(edge)))
+    length = float(np.linalg.norm(short_edge))
+    short_axis = float(short_edge[0] / length), float(short_edge[1] / length)
+    x1, y1 = np.min(points, axis=0)
+    x2, y2 = np.max(points, axis=0)
+    return Detection(requested, 1.0, (float(x1), float(y1), float(x2), float(y2)), short_axis)
+
+
+def estimate_pose(node, detection, plane_z):
+    if node.camera_info is None:
+        raise RuntimeError("Нет CameraInfo")
+    frame = node.camera_frame or node.camera_info.header.frame_id
+    transform = node.tf_buffer.lookup_transform(
+        "Base_link", frame, node.Time(), timeout=node.Duration(seconds=1.0)
+    )
+    translation = transform.transform.translation
+    rotation = transform.transform.rotation
+    quaternion = (rotation.x, rotation.y, rotation.z, rotation.w)
+
+    u, v = detection.center
+    matrix = node.camera_info.k
+    fx, fy, cx, cy = matrix[0], matrix[4], matrix[2], matrix[5]
+    ray_camera = ((u - cx) / fx, (v - cy) / fy, 1.0)
+    ray_base = rotate_vector(ray_camera, quaternion)
+    if abs(ray_base[2]) < 1e-6:
+        raise RuntimeError("Луч камеры параллелен полке")
+    distance = (plane_z - translation.z) / ray_base[2]
+    if distance <= 0:
+        raise RuntimeError("Полка находится позади камеры")
+
+    x = translation.x + distance * ray_base[0]
+    y = translation.y + distance * ray_base[1]
+    if math.hypot(x, y) > 0.9:
+        raise RuntimeError(f"Координаты вне рабочей зоны: x={x:.3f}, y={y:.3f}")
+
+    yaw = math.pi / 2
+    if detection.short_axis is not None:
+        vx, vy = detection.short_axis
+        axis_base = rotate_vector((vx, vy, 0.0), quaternion)
+        short_angle = math.atan2(axis_base[1], axis_base[0])
+        yaw = normalize_half_turn(short_angle - math.pi / 2)
+    return x, y, yaw
+
+
+def build_vision_node(args, imports):
+    Node, CvBridge, Image, CameraInfo, qos, Buffer, TransformListener, Duration, Time = imports
+
+    class VisionNode(Node):
+        def __init__(self):
+            super().__init__("mvch_module3_vision")
+            self.Duration = Duration
+            self.Time = Time
+            self.bridge = CvBridge()
+            self.frame = None
+            self.camera_info = None
+            self.camera_frame = None
+            self.lock = threading.Lock()
+            self.tf_buffer = Buffer()
+            self.tf_listener = TransformListener(self.tf_buffer, self)
+            self.create_subscription(Image, args.topic, self.on_image, qos)
+            info_topic = args.topic.rsplit("/", 1)[0] + "/camera_info"
+            self.create_subscription(CameraInfo, info_topic, self.on_info, qos)
+
+        def on_image(self, message):
+            try:
+                frame = self.bridge.imgmsg_to_cv2(message, desired_encoding="bgr8")
+            except Exception as error:
+                self.get_logger().error(f"Ошибка кадра: {error}")
+                return
+            with self.lock:
+                self.frame = frame
+                self.camera_frame = message.header.frame_id
+
+        def on_info(self, message):
+            self.camera_info = message
+
+        def latest_frame(self):
+            with self.lock:
+                return None if self.frame is None else self.frame.copy()
+
+    return VisionNode()
+
+
+class Arm:
+    def __init__(
+        self,
+        moveit,
+        params_file,
+        PoseStamped,
+        quaternion_from_euler,
+        event_log,
+        plan_only=False,
+    ):
+        self.robot = moveit(
+            node_name="mvch_module3_moveit",
+            name_space="/RMC1/arm95",
+            launch_params_filepaths=[params_file],
+            config_dict=None,
+        )
+        self.arm = self.robot.get_planning_component("arm95_group")
+        self.gripper = self.robot.get_planning_component("gripper")
+        self.PoseStamped = PoseStamped
+        self.quaternion_from_euler = quaternion_from_euler
+        self.log = event_log
+        self.plan_only = plan_only
+
+    def execute(self, component, stage):
+        plan = component.plan()
+        if not plan:
+            raise RuntimeError(f"MoveIt не построил траекторию: {stage}")
+        self.log.write("PLAN_READY", stage=stage)
+        if not self.plan_only:
+            self.robot.execute(plan.trajectory, controllers=[])
+            time.sleep(0.4)
+            self.log.write("MOTION_DONE", stage=stage)
+
+    def named(self, component, state, stage):
+        component.set_start_state_to_current_state()
+        component.set_goal_state(configuration_name=state)
+        self.execute(component, stage)
+
+    def pose(self, x, y, z, yaw, stage):
+        goal = self.PoseStamped()
+        goal.header.frame_id = "Base_link"
+        qx, qy, qz, qw = self.quaternion_from_euler(math.pi, 0.0, yaw)
+        goal.pose.orientation.x = qx
+        goal.pose.orientation.y = qy
+        goal.pose.orientation.z = qz
+        goal.pose.orientation.w = qw
+        goal.pose.position.x = x
+        goal.pose.position.y = y
+        goal.pose.position.z = z
+        self.arm.set_start_state_to_current_state()
+        self.arm.set_goal_state(pose_stamped_msg=goal, pose_link="gripper_base")
+        self.execute(self.arm, stage)
+
+    def open(self):
+        self.named(self.gripper, "open", "открыть схват")
+        if not self.plan_only:
+            self.log.write("GRIPPER", state="open")
+
+    def close(self):
+        self.named(self.gripper, "closed", "закрыть схват")
+        if not self.plan_only:
+            self.log.write("GRIPPER", state="closed")
+
+    def initial(self, stage="исходное положение"):
+        self.named(self.arm, "table_pos", stage)
+
+
+def wait_for_trigger(args, node, model, requested, cv2, np, event_log):
+    started = time.monotonic()
+    last_detection = None
+    last_frame_time = 0.0
+    last_status_time = 0.0
+    frame_count = 0
+    best_classes = {}
+    terminal_trigger = threading.Event()
+    target_visible = threading.Event()
+    window = not args.no_window and bool(os.environ.get("DISPLAY"))
+    if not args.no_window and not window:
+        print("[WARN] DISPLAY не найден, работаю без окна")
+
+    def read_terminal_command():
+        while not terminal_trigger.is_set():
+            try:
+                command = input().strip().lower()
+            except EOFError:
+                return
+            if command not in ("", "g", "go"):
+                print("[WAIT] Команда не распознана. Введите g и нажмите Enter.")
+                continue
+            if not target_visible.is_set():
+                print(f"[WAIT] Класс {requested} пока не найден, команда не принята.")
+                continue
+            terminal_trigger.set()
+
+    if not args.auto_start and not args.dry_run and sys.stdin.isatty():
+        threading.Thread(target=read_terminal_command, daemon=True).start()
+
+    if args.dry_run:
+        print(f"[READY] Dry-run: жду первое распознавание класса {requested}.")
+    else:
+        print(
+            f"[READY] Цель: {requested}. После фиксации нажмите G в окне "
+            "или введите g + Enter в терминале."
+        )
+    while time.monotonic() - started < args.timeout:
+        frame = node.latest_frame()
+        if frame is None:
+            time.sleep(0.05)
+            continue
+        frame_count += 1
+        result = model.predict(
+            source=frame,
+            conf=args.conf,
+            imgsz=args.imgsz,
+            device=args.device,
+            verbose=False,
+        )[0]
+        if result.boxes is not None:
+            for box in result.boxes:
+                name = str(result.names[int(box.cls.item())]).lower()
+                confidence = float(box.conf.item())
+                best_classes[name] = max(best_classes.get(name, 0.0), confidence)
+        detections = find_targets(result, frame, requested, cv2, np)
+        last_detection = choose_target(node, detections, args.plane_z)
+        if last_detection is None:
+            target_visible.clear()
+        else:
+            target_visible.set()
+        annotated = result.plot(labels=True, conf=True, line_width=2)
+        if last_detection is not None:
+            u, v = (int(value) for value in last_detection.center)
+            cv2.circle(annotated, (u, v), 7, (0, 255, 255), -1)
+            if last_detection.short_axis is not None:
+                vx, vy = last_detection.short_axis
+                cv2.line(
+                    annotated,
+                    (u - int(vx * 45), v - int(vy * 45)),
+                    (u + int(vx * 45), v + int(vy * 45)),
+                    (255, 255, 0),
+                    3,
+                )
+
+        now = time.monotonic()
+        if last_detection is not None:
+            if now - last_frame_time > 0.8:
+                event_log.write(
+                    "DETECTION",
+                    target=last_detection.name,
+                    confidence=round(last_detection.confidence, 4),
+                    center=[round(value, 1) for value in last_detection.center],
+                )
+                last_frame_time = now
+        elif now - last_status_time > 5.0:
+            event_log.write(
+                "VISION_WAIT",
+                target=requested,
+                frames=frame_count,
+                seen={name: round(value, 3) for name, value in sorted(best_classes.items())},
+            )
+            last_status_time = now
+
+        key = -1
+        if window:
+            cv2.imshow("CHVT module 3 - G: start, ESC: exit", annotated)
+            key = cv2.waitKey(1) & 0xFF
+        if key == 27:
+            raise KeyboardInterrupt
+        if last_detection is not None and (
+            args.dry_run
+            or args.auto_start
+            or terminal_trigger.is_set()
+            or key in (ord("g"), ord("G"), 13, 32)
+        ):
+            return last_detection
+    if frame_count == 0:
+        raise RuntimeError(f"Нет кадров с топика {args.topic} за {args.timeout:.0f} с")
+    seen = ", ".join(f"{name}={value:.2f}" for name, value in sorted(best_classes.items()))
+    raise RuntimeError(
+        f"За {args.timeout:.0f} с класс {requested} не найден; "
+        f"обработано кадров: {frame_count}; распознано: {seen or 'ничего'}"
+    )
+
+
+def fresh_detection(node, model, requested, args, cv2, np):
+    time.sleep(0.7)
+    frame = node.latest_frame()
+    if frame is None:
+        raise RuntimeError("Нет свежего кадра после возврата руки")
+    result = model.predict(
+        source=frame,
+        conf=args.conf,
+        imgsz=args.imgsz,
+        device=args.device,
+        verbose=False,
+    )[0]
+    detections = find_targets(result, frame, requested, cv2, np)
+    detection = choose_target(node, detections, args.plane_z)
+    if detection is None:
+        raise RuntimeError(f"После установки руки не найден класс {requested}")
+    return detection
+
+
+def save_snapshot(node, event_log, suffix, cv2):
+    time.sleep(0.5)
+    frame = node.latest_frame()
+    if frame is None:
+        event_log.write("SNAPSHOT_FAILED", stage=suffix, reason="нет кадра")
+        return
+    path = event_log.image_path(suffix)
+    if cv2.imwrite(str(path), frame):
+        event_log.write("SNAPSHOT", stage=suffix, path=str(path))
+    else:
+        event_log.write("SNAPSHOT_FAILED", stage=suffix, reason="ошибка записи")
+
+
+def main():
+    args = arguments()
+    requested = target_name(args.target or input("Цель (1 hammer, 2 wrench, 3 pliers): "))
+    if requested not in TARGETS.values():
+        raise SystemExit(f"Неизвестная цель: {requested}")
+    weights = local_path(args.weights)
+    if not weights.is_file():
+        raise SystemExit(f"Не найдены веса: {weights}")
+
+    try:
+        import cv2
+        import numpy as np
+        if int(np.__version__.split(".", 1)[0]) >= 2:
+            raise SystemExit(
+                "NumPy 2.x несовместим с cv_bridge из ROS Jazzy. "
+                "Выполните: python3 -m pip install --force-reinstall 'numpy<2'"
+            )
+        import rclpy
+        import yaml
+        from ament_index_python.packages import get_package_share_directory
+        from cv_bridge import CvBridge
+        from geometry_msgs.msg import PoseStamped
+        from moveit.planning import MoveItPy
+        from moveit_configs_utils import MoveItConfigsBuilder
+        from rclpy.duration import Duration
+        from rclpy.executors import SingleThreadedExecutor
+        from rclpy.node import Node
+        from rclpy.qos import qos_profile_sensor_data
+        from rclpy.time import Time
+        from sensor_msgs.msg import CameraInfo, Image
+        from tf2_ros import Buffer, TransformListener
+        from tf_transformations import quaternion_from_euler
+        from ultralytics import YOLO
+    except ImportError as error:
+        if error.name == "transforms3d":
+            raise SystemExit(
+                "Venv не видит системные зависимости ROS. Включите их: "
+                "sed -i 's/include-system-site-packages = false/"
+                "include-system-site-packages = true/' .venv/pyvenv.cfg"
+            )
+        raise SystemExit(
+            f"Не удалось импортировать {error.name}: {error}. "
+            "Выполните pip install -r requirements.txt после source ROS"
+        )
+
+    event_log = EventLog()
+    event_log.write("START", target=requested, log=str(event_log.path))
+    rclpy.init()
+    imports = (
+        Node,
+        CvBridge,
+        Image,
+        CameraInfo,
+        qos_profile_sensor_data,
+        Buffer,
+        TransformListener,
+        Duration,
+        Time,
+    )
+    node = build_vision_node(args, imports)
+    executor = SingleThreadedExecutor()
+    executor.add_node(node)
+    spin_thread = threading.Thread(target=executor.spin, daemon=True)
+    spin_thread.start()
+    model = YOLO(str(weights))
+    moveit_active = False
+    exit_code = 0
+
+    try:
+        detection = wait_for_trigger(args, node, model, requested, cv2, np, event_log)
+        if args.dry_run:
+            x, y, yaw = estimate_pose(node, detection, args.plane_z)
+            event_log.write(
+                "DRY_RUN",
+                x=round(x, 4),
+                y=round(y, 4),
+                plane_z=args.plane_z,
+                yaw=round(yaw, 4),
+            )
+            return
+
+        package_dir = Path(get_package_share_directory("ar_webots_fms_ros2"))
+        moveit_config = (
+            MoveItConfigsBuilder("arm95")
+            .robot_description(file_path=str(package_dir / "resource/urdf/arm95_webots.urdf"))
+            .trajectory_execution(
+                file_path=str(package_dir / "resource/config/moveit_controllers.yaml")
+            )
+            .moveit_cpp(file_path=str(package_dir / "resource/config/moveit_cpp.yaml"))
+            .to_moveit_configs()
+            .to_dict()
+        )
+        moveit_config["use_sim_time"] = True
+        # Wildcard нужен из-за namespace /RMC1/arm95: обычный config_dict
+        # записывает параметры только для имени узла без namespace.
+        with NamedTemporaryFile("w", suffix=".yaml", delete=False) as stream:
+            yaml.safe_dump({"/**": {"ros__parameters": moveit_config}}, stream)
+            params_file = stream.name
+        try:
+            arm = Arm(
+                MoveItPy,
+                params_file,
+                PoseStamped,
+                quaternion_from_euler,
+                event_log,
+                args.plan_only,
+            )
+            moveit_active = True
+        finally:
+            Path(params_file).unlink(missing_ok=True)
+        arm.open()
+        arm.initial("установить исходное положение")
+        detection = fresh_detection(node, model, requested, args, cv2, np)
+        x, y, yaw = estimate_pose(node, detection, args.plane_z)
+        drop_x = x if args.drop_x is None else args.drop_x
+        drop_y = y if args.drop_y is None else args.drop_y
+        event_log.write(
+            "TARGET",
+            target=requested,
+            confidence=round(detection.confidence, 4),
+            x=round(x, 4),
+            y=round(y, 4),
+            yaw=round(yaw, 4),
+        )
+
+        arm.pose(x, y, args.approach_z, yaw, "подход над деталью")
+        if args.plan_only:
+            print("[PLAN-ONLY] Подход построен, движения не было")
+            return
+        time.sleep(0.5)
+        close_frame = node.latest_frame()
+        if close_frame is None:
+            raise RuntimeError("Нет близкого кадра для уточнения")
+        close_detection = card_near_center(close_frame, requested, cv2, np)
+        close_x, close_y, close_yaw = estimate_pose(node, close_detection, args.plane_z)
+        correction = math.hypot(close_x - x, close_y - y)
+        if correction > 0.12:
+            raise RuntimeError(f"Слишком большая поправка координат: {correction:.3f} м")
+        x, y, yaw = close_x, close_y, close_yaw
+        event_log.write(
+            "TARGET_REFINED",
+            method="card_near_center",
+            correction=round(correction, 4),
+            x=round(x, 4),
+            y=round(y, 4),
+            yaw=round(yaw, 4),
+        )
+        arm.pose(x, y, args.approach_z, yaw, "точный подход над деталью")
+        arm.pose(x, y, args.pick_z, yaw, "опустить схват")
+        arm.close()
+        save_snapshot(node, event_log, "gripped", cv2)
+        arm.pose(x, y, args.approach_z, yaw, "поднять деталь")
+        arm.initial("исходное положение с деталью")
+        save_snapshot(node, event_log, "with_detail", cv2)
+
+        arm.pose(drop_x, drop_y, args.approach_z, yaw, "подход к пустому месту")
+        arm.pose(drop_x, drop_y, args.pick_z, yaw, "опустить деталь")
+        arm.open()
+        arm.pose(drop_x, drop_y, args.approach_z, yaw, "отойти от детали")
+        arm.initial("исходное положение без детали")
+        save_snapshot(node, event_log, "finished", cv2)
+        event_log.write("DONE", message="Деталь возвращена, манипулятор в исходном положении")
+    except KeyboardInterrupt:
+        print("\n[STOP] Остановлено оператором")
+        exit_code = 130
+    except Exception as error:
+        event_log.write("FAILED", reason=str(error))
+        exit_code = 1
+    finally:
+        cv2.destroyAllWindows()
+        executor.shutdown()
+        node.destroy_node()
+        if rclpy.ok():
+            rclpy.shutdown()
+        if moveit_active:
+            # MoveItPy в поставке Jazzy падает в C++-деструкторе после штатной
+            # работы. Все движения и логи уже завершены, поэтому не вызываем
+            # проблемный teardown при выходе единственного зачетного скрипта.
+            sys.stdout.flush()
+            sys.stderr.flush()
+            os._exit(exit_code)
+    if exit_code:
+        raise SystemExit(exit_code)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/module3/prepare_dataset.py b/module3/prepare_dataset.py
new file mode 100644
index 0000000..18a43c0
--- /dev/null
+++ b/module3/prepare_dataset.py
@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+"""Преобразует polygon-разметку Roboflow в обычные YOLO bounding boxes."""
+
+import argparse
+from pathlib import Path
+
+
+HERE = Path(__file__).resolve().parent
+
+
+def arguments():
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--dataset", default="training", help="Каталог Roboflow export")
+    return parser.parse_args()
+
+
+def convert_line(line, filename):
+    values = line.split()
+    if len(values) == 5:
+        return line.strip(), False
+    if len(values) < 7 or (len(values) - 1) % 2:
+        raise ValueError(f"Некорректная строка в {filename}: {line.strip()}")
+
+    class_id = int(values[0])
+    coordinates = [float(value) for value in values[1:]]
+    xs = coordinates[0::2]
+    ys = coordinates[1::2]
+    x1, x2 = min(xs), max(xs)
+    y1, y2 = min(ys), max(ys)
+    box = (class_id, (x1 + x2) / 2, (y1 + y2) / 2, x2 - x1, y2 - y1)
+    return f"{box[0]} {box[1]:.6f} {box[2]:.6f} {box[3]:.6f} {box[4]:.6f}", True
+
+
+def main():
+    args = arguments()
+    dataset = Path(args.dataset).expanduser()
+    if not dataset.is_absolute():
+        dataset = HERE / dataset
+
+    files = sorted(dataset.glob("*/labels/*.txt"))
+    if not files:
+        raise SystemExit(f"Не найдены labels в {dataset}")
+
+    converted = 0
+    objects = 0
+    for filename in files:
+        output = []
+        for line in filename.read_text().splitlines():
+            if not line.strip():
+                continue
+            result, changed = convert_line(line, filename)
+            output.append(result)
+            converted += int(changed)
+            objects += 1
+        filename.write_text("\n".join(output) + "\n")
+
+    print(f"Готово: файлов={len(files)}, объектов={objects}, polygon->bbox={converted}")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/module3/requirements.txt b/module3/requirements.txt
new file mode 100644
index 0000000..d2880f0
--- /dev/null
+++ b/module3/requirements.txt
@@ -0,0 +1,5 @@
+numpy>=1.23.5,<2
+opencv-python>=4.6,<4.12
+lark>=1.1
+transforms3d>=0.4
+ultralytics==8.3.0
diff --git a/module3/test_model.py b/module3/test_model.py
new file mode 100755
index 0000000..5c1d922
--- /dev/null
+++ b/module3/test_model.py
@@ -0,0 +1,92 @@
+#!/usr/bin/env python3
+"""Рисует bbox, название класса и confidence модели на фотографии."""
+
+import argparse
+from pathlib import Path
+
+
+HERE = Path(__file__).resolve().parent
+
+
+def local_path(value):
+    path = Path(value).expanduser()
+    return path if path.is_absolute() else HERE / path
+
+
+def select_device(requested, torch):
+    if requested == "auto":
+        if torch.cuda.is_available():
+            return 0
+        if hasattr(torch.backends, "mps") and torch.backends.mps.is_available():
+            return "mps"
+        return "cpu"
+    if requested in ("cuda", "gpu"):
+        if not torch.cuda.is_available():
+            raise SystemExit("CUDA/ROCm не найден. Используйте --device cpu.")
+        return 0
+    return requested
+
+
+def arguments():
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("source", help="Фотография для проверки")
+    parser.add_argument("--weights", default="models/latest.pt")
+    parser.add_argument("--output", default="predictions", help="Каталог результата")
+    parser.add_argument("--conf", type=float, default=0.35)
+    parser.add_argument("--imgsz", type=int, default=512)
+    parser.add_argument("--device", default="auto", help="auto, cpu, cuda или номер GPU")
+    parser.add_argument("--show", action="store_true", help="Открыть окно с результатом")
+    return parser.parse_args()
+
+
+def main():
+    args = arguments()
+    try:
+        import cv2
+        import torch
+        from ultralytics import YOLO
+    except ImportError as error:
+        raise SystemExit(f"Нет зависимости {error.name}. Выполните: pip install -r requirements.txt")
+
+    source = local_path(args.source)
+    weights = local_path(args.weights)
+    output = local_path(args.output)
+    if not source.is_file():
+        raise SystemExit(f"Не найдена фотография: {source}")
+    if not weights.is_file():
+        raise SystemExit(f"Не найдены веса: {weights}")
+    if not 0 <= args.conf <= 1:
+        raise SystemExit("--conf должен быть от 0 до 1")
+
+    model = YOLO(str(weights))
+    result = model.predict(
+        source=str(source),
+        conf=args.conf,
+        imgsz=args.imgsz,
+        device=select_device(args.device, torch),
+        verbose=False,
+    )[0]
+    output.mkdir(parents=True, exist_ok=True)
+    destination = output / f"{source.stem}_detected.jpg"
+    annotated = result.plot(labels=True, conf=True, line_width=2)
+    if not cv2.imwrite(str(destination), annotated):
+        raise SystemExit(f"Не удалось сохранить {destination}")
+
+    if result.boxes is None or len(result.boxes) == 0:
+        print("Объекты не найдены")
+    else:
+        for box in result.boxes:
+            class_id = int(box.cls.item())
+            confidence = float(box.conf.item())
+            x1, y1, x2, y2 = (round(float(v), 1) for v in box.xyxy[0])
+            print(f"{result.names[class_id]}: {confidence:.3f}, bbox=({x1}, {y1}, {x2}, {y2})")
+    print(f"Изображение с классами: {destination}")
+
+    if args.show:
+        cv2.imshow("Module 3 detection - press any key", annotated)
+        cv2.waitKey(0)
+        cv2.destroyAllWindows()
+
+
+if __name__ == "__main__":
+    main()
diff --git a/module3/train.py b/module3/train.py
new file mode 100755
index 0000000..ee992c5
--- /dev/null
+++ b/module3/train.py
@@ -0,0 +1,108 @@
+#!/usr/bin/env python3
+"""Обучение YOLO11 на размеченном датасете инструментов."""
+
+import argparse
+import shutil
+from pathlib import Path
+
+
+HERE = Path(__file__).resolve().parent
+TRAINING = HERE / "training"
+
+
+def local_path(value):
+    path = Path(value).expanduser()
+    return path if path.is_absolute() else HERE / path
+
+
+def select_device(requested, torch):
+    if requested == "cpu":
+        return "cpu"
+    if requested in ("cuda", "gpu"):
+        if not torch.cuda.is_available():
+            raise SystemExit("CUDA/ROCm не найден. Используйте --device cpu или установите PyTorch для GPU.")
+        return 0
+    if requested == "auto":
+        if torch.cuda.is_available():
+            return 0  # NVIDIA CUDA и AMD ROCm используют этот интерфейс PyTorch.
+        if hasattr(torch.backends, "mps") and torch.backends.mps.is_available():
+            return "mps"
+        return "cpu"
+    return requested
+
+
+def arguments():
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--data", default="training/data.yaml", help="data.yaml из Roboflow")
+    parser.add_argument("--model", default="yolo11n.pt", help="Стартовые веса Ultralytics")
+    parser.add_argument("--epochs", type=int, default=30)
+    parser.add_argument(
+        "--patience",
+        type=int,
+        default=7,
+        help="Остановиться после N эпох без улучшения validation metrics",
+    )
+    parser.add_argument("--imgsz", type=int, default=512)
+    parser.add_argument("--batch", type=int, default=8)
+    parser.add_argument("--workers", type=int, default=4)
+    parser.add_argument(
+        "--device",
+        default="auto",
+        help="auto, cpu, cuda или номер GPU (например 0)",
+    )
+    parser.add_argument("--name", default="tools_yolo11n")
+    return parser.parse_args()
+
+
+def main():
+    args = arguments()
+    try:
+        import torch
+        from ultralytics import YOLO
+    except ImportError as error:
+        raise SystemExit(f"Нет зависимости {error.name}. Выполните: pip install -r requirements.txt")
+
+    data = local_path(args.data)
+    if not data.is_file():
+        raise SystemExit(f"Не найден датасет: {data}\nРаспакуйте YOLO11 export из Roboflow в module3/dataset.")
+    device = select_device(args.device, torch)
+    if device == 0:
+        backend = "ROCm" if getattr(torch.version, "hip", None) else "CUDA"
+        print(f"Устройство: {backend} GPU — {torch.cuda.get_device_name(0)}")
+    else:
+        print(f"Устройство: {device}")
+
+    model = YOLO(args.model)
+    result = model.train(
+        data=str(data),
+        epochs=args.epochs,
+        patience=args.patience,
+        imgsz=args.imgsz,
+        batch=args.batch,
+        workers=args.workers,
+        device=device,
+        project=str(TRAINING / "runs"),
+        name=args.name,
+        seed=42,
+        deterministic=True,
+        hsv_h=0.0,
+        hsv_s=0.0,
+        hsv_v=0.0,
+        degrees=12.0,
+        translate=0.05,
+        scale=0.15,
+        shear=2.0,
+        fliplr=0.5,
+        flipud=0.5,
+    )
+    save_dir = Path(result.save_dir)
+    best_weights = save_dir / "weights" / "best.pt"
+    model_copy = HERE / "models" / "latest.pt"
+    model_copy.parent.mkdir(parents=True, exist_ok=True)
+    shutil.copy2(best_weights, model_copy)
+    print(f"Лучшие веса: {best_weights}")
+    print(f"Модель для test_model.py: {model_copy}")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/module3/training/.gitignore b/module3/training/.gitignore
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--- /dev/null
+++ b/module3/training/.gitignore
@@ -0,0 +1,6 @@
+*.zip
+.venv
+runs
+*.cache
+test
+valid
diff --git a/module3/training/README.dataset.txt b/module3/training/README.dataset.txt
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--- /dev/null
+++ b/module3/training/README.dataset.txt
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+# chvt-2026 > v0.1.0
+https://universe.roboflow.com/jons-workspace-8viwr/chvt-2026
+
+Provided by a Roboflow user
+License: CC BY 4.0
diff --git a/module3/training/README.roboflow.txt b/module3/training/README.roboflow.txt
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--- /dev/null
+++ b/module3/training/README.roboflow.txt
@@ -0,0 +1,27 @@
+
+chvt-2026 - v1 v0.1.0
+==============================
+
+This dataset was exported via roboflow.com on September 5, 2026 at 7:40 PM GMT
+
+Roboflow is an end-to-end computer vision platform that helps you
+* collaborate with your team on computer vision projects
+* collect & organize images
+* understand and search unstructured image data
+* annotate, and create datasets
+* export, train, and deploy computer vision models
+* use active learning to improve your dataset over time
+
+For state of the art Computer Vision training notebooks you can use with this dataset,
+visit https://github.com/roboflow/notebooks
+
+To find over 100k other datasets and pre-trained models, visit https://universe.roboflow.com
+
+The dataset includes 40 images.
+Chvt-2026 are annotated in YOLOv11 format.
+
+The following pre-processing was applied to each image:
+* Auto-orientation of pixel data (with EXIF-orientation stripping)
+* Resize to 512x512 (Stretch)
+
+No image augmentation techniques were applied.
diff --git a/module3/training/data.yaml b/module3/training/data.yaml
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--- /dev/null
+++ b/module3/training/data.yaml
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+train: train/images
+val: valid/images
+test: test/images
+
+names:
+  0: hammer
+  1: pliers
+  2: wrench
+
+# nc: 3
+# names: ['hammer', 'pliers', 'wrench']
+
+# roboflow:
+#   workspace: jons-workspace-8viwr
+#   project: chvt-2026
+#   version: 1
+#   license: CC BY 4.0
+#   url: https://universe.roboflow.com/jons-workspace-8viwr/chvt-2026/dataset/1
diff --git a/module3/training/requirements.md b/module3/training/requirements.md
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--- /dev/null
+++ b/module3/training/requirements.md
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+# пайторч без куда для амд
+```
+  pip install torch torchvision --index-url https://download.pytorch.org/whl/cpu
+```
+
+# база
+```
+  pip install -r ../requirements.txt
+```
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@@ -0,0 +1,4 @@
+0 0.663086 0.459961 0.060547 0.111328
+1 0.326172 0.395508 0.046875 0.115234
+2 0.494141 0.460938 0.074219 0.070312
+1 0.609375 0.326172 0.070312 0.093750
diff --git a/module3/training/train/labels/frame_20260905_210623_307410_002_jpg.rf.90cbb36eb7b46b55571c327a6ee0a12e.txt b/module3/training/train/labels/frame_20260905_210623_307410_002_jpg.rf.90cbb36eb7b46b55571c327a6ee0a12e.txt
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@@ -0,0 +1,4 @@
+1 0.326172 0.395508 0.046875 0.115234
+1 0.608398 0.327148 0.068359 0.095703
+0 0.663086 0.459961 0.064453 0.111328
+2 0.494141 0.460938 0.074219 0.070312
diff --git a/module3/training/train/labels/frame_20260905_210624_827788_004_jpg.rf.d2e1663590c3054fc19d3b78b168cbc1.txt b/module3/training/train/labels/frame_20260905_210624_827788_004_jpg.rf.d2e1663590c3054fc19d3b78b168cbc1.txt
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@@ -0,0 +1,4 @@
+1 0.330078 0.379883 0.046875 0.111328
+1 0.619141 0.338867 0.066406 0.099609
+2 0.495117 0.460938 0.076172 0.070312
+0 0.663086 0.475586 0.068359 0.107422
diff --git a/module3/training/train/labels/frame_20260905_210625_525594_006_jpg.rf.f0124197fb00c3a8fe70e216107b77be.txt b/module3/training/train/labels/frame_20260905_210625_525594_006_jpg.rf.f0124197fb00c3a8fe70e216107b77be.txt
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@@ -0,0 +1,4 @@
+2 0.494141 0.458008 0.078125 0.064453
+1 0.3359375 0.3671875 0.0546875 0.11328125
+1 0.625000 0.348633 0.062500 0.103516
+0 0.663086 0.488281 0.072266 0.105469
diff --git a/module3/training/train/labels/frame_20260905_210625_934956_007_jpg.rf.bda3050e4ead7be8008107504bc99cce.txt b/module3/training/train/labels/frame_20260905_210625_934956_007_jpg.rf.bda3050e4ead7be8008107504bc99cce.txt
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@@ -0,0 +1,4 @@
+1 0.336914 0.359375 0.056641 0.109375
+2 0.495117 0.458008 0.080078 0.060547
+1 0.628906 0.353516 0.062500 0.105469
+0 0.662109 0.496094 0.074219 0.101562
diff --git a/module3/training/train/labels/frame_20260905_210626_343395_008_jpg.rf.8f4b9ef70d74df8efc3920bfcc4adee7.txt b/module3/training/train/labels/frame_20260905_210626_343395_008_jpg.rf.8f4b9ef70d74df8efc3920bfcc4adee7.txt
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+1 0.340820 0.351562 0.056641 0.109375
+2 0.495117 0.457031 0.080078 0.058594
+1 0.632812 0.360352 0.062500 0.107422
+0 0.662109 0.503906 0.074219 0.101562
diff --git a/module3/training/train/labels/frame_20260905_210626_742950_009_jpg.rf.44523e8c78465f32c64e88b525232d09.txt b/module3/training/train/labels/frame_20260905_210626_742950_009_jpg.rf.44523e8c78465f32c64e88b525232d09.txt
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index 0000000..16af030
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210626_742950_009_jpg.rf.44523e8c78465f32c64e88b525232d09.txt
@@ -0,0 +1,4 @@
+1 0.344727 0.343750 0.060547 0.109375
+2 0.496094 0.457031 0.082031 0.054688
+1 0.635742 0.365234 0.056641 0.109375
+0 0.660156 0.510742 0.074219 0.099609
diff --git a/module3/training/train/labels/frame_20260905_210627_665064_011_jpg.rf.edc8654949e35df18d1f41445b9ea277.txt b/module3/training/train/labels/frame_20260905_210627_665064_011_jpg.rf.edc8654949e35df18d1f41445b9ea277.txt
new file mode 100644
index 0000000..22b3516
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210627_665064_011_jpg.rf.edc8654949e35df18d1f41445b9ea277.txt
@@ -0,0 +1,4 @@
+1 0.349609 0.334961 0.066406 0.107422
+1 0.638672 0.373047 0.054688 0.109375
+2 0.496094 0.457031 0.082031 0.050781
+0 0.660156 0.518555 0.074219 0.091797
diff --git a/module3/training/train/labels/frame_20260905_210642_026169_012_jpg.rf.a0ec2107161b3189f84a0d6ec23fec67.txt b/module3/training/train/labels/frame_20260905_210642_026169_012_jpg.rf.a0ec2107161b3189f84a0d6ec23fec67.txt
new file mode 100644
index 0000000..cddd61f
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210642_026169_012_jpg.rf.a0ec2107161b3189f84a0d6ec23fec67.txt
@@ -0,0 +1,4 @@
+1 0.348633 0.334961 0.064453 0.107422
+1 0.639648 0.373047 0.056641 0.109375
+2 0.496094 0.457031 0.082031 0.050781
+0 0.658203 0.520508 0.078125 0.095703
diff --git a/module3/training/train/labels/frame_20260905_210642_299877_013_jpg.rf.39af656456901e88279ef8728acc1c00.txt b/module3/training/train/labels/frame_20260905_210642_299877_013_jpg.rf.39af656456901e88279ef8728acc1c00.txt
new file mode 100644
index 0000000..bfbe932
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210642_299877_013_jpg.rf.39af656456901e88279ef8728acc1c00.txt
@@ -0,0 +1,4 @@
+2 0.496094 0.457031 0.082031 0.050781
+0 0.658203 0.520508 0.078125 0.095703
+1 0.639648 0.373047 0.056641 0.109375
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diff --git a/module3/training/train/labels/frame_20260905_210657_079252_014_jpg.rf.cbaba7c819d2c2d5f49f637665b233e1.txt b/module3/training/train/labels/frame_20260905_210657_079252_014_jpg.rf.cbaba7c819d2c2d5f49f637665b233e1.txt
new file mode 100644
index 0000000..a9a3179
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210657_079252_014_jpg.rf.cbaba7c819d2c2d5f49f637665b233e1.txt
@@ -0,0 +1,4 @@
+1 0.349609 0.335938 0.062500 0.105469
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diff --git a/module3/training/train/labels/frame_20260905_210657_351675_015_jpg.rf.fb80e06a010b189aae95a2169b0de0c4.txt b/module3/training/train/labels/frame_20260905_210657_351675_015_jpg.rf.fb80e06a010b189aae95a2169b0de0c4.txt
new file mode 100644
index 0000000..20b101c
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210657_351675_015_jpg.rf.fb80e06a010b189aae95a2169b0de0c4.txt
@@ -0,0 +1,4 @@
+1 0.345703 0.342773 0.058594 0.107422
+1 0.636719 0.367188 0.054688 0.109375
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diff --git a/module3/training/train/labels/frame_20260905_210657_760995_016_jpg.rf.1d5f9df0ba08f5172aa010aeb0ebd430.txt b/module3/training/train/labels/frame_20260905_210657_760995_016_jpg.rf.1d5f9df0ba08f5172aa010aeb0ebd430.txt
new file mode 100644
index 0000000..8551a42
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210657_760995_016_jpg.rf.1d5f9df0ba08f5172aa010aeb0ebd430.txt
@@ -0,0 +1,4 @@
+1 0.340820 0.350586 0.056641 0.107422
+1 0.632812 0.360352 0.062500 0.107422
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+0 0.662109 0.505859 0.074219 0.097656
diff --git a/module3/training/train/labels/frame_20260905_210659_127615_019_jpg.rf.aa73d6ac84260ee43a093553db35ff25.txt b/module3/training/train/labels/frame_20260905_210659_127615_019_jpg.rf.aa73d6ac84260ee43a093553db35ff25.txt
new file mode 100644
index 0000000..61cde29
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210659_127615_019_jpg.rf.aa73d6ac84260ee43a093553db35ff25.txt
@@ -0,0 +1,4 @@
+1 0.329102 0.379883 0.048828 0.111328
+1 0.616211 0.334961 0.068359 0.099609
+2 0.495117 0.458984 0.076172 0.070312
+0 0.664062 0.473633 0.070312 0.107422
diff --git a/module3/training/train/labels/frame_20260905_210659_402853_020_jpg.rf.54756d3386e74e9b204f948771e6920b.txt b/module3/training/train/labels/frame_20260905_210659_402853_020_jpg.rf.54756d3386e74e9b204f948771e6920b.txt
new file mode 100644
index 0000000..086e3db
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210659_402853_020_jpg.rf.54756d3386e74e9b204f948771e6920b.txt
@@ -0,0 +1,4 @@
+2 0.494141 0.459961 0.074219 0.072266
+1 0.328125 0.388672 0.046875 0.113281
+1 0.614258 0.332031 0.072266 0.097656
+0 0.663086 0.467773 0.068359 0.107422
diff --git a/module3/training/train/labels/frame_20260905_210659_816477_021_jpg.rf.d7bb5f5b0ecc711c848d9bc3bc721f5f.txt b/module3/training/train/labels/frame_20260905_210659_816477_021_jpg.rf.d7bb5f5b0ecc711c848d9bc3bc721f5f.txt
new file mode 100644
index 0000000..aac305b
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210659_816477_021_jpg.rf.d7bb5f5b0ecc711c848d9bc3bc721f5f.txt
@@ -0,0 +1,4 @@
+2 0.494141 0.460938 0.074219 0.074219
+1 0.608398 0.325195 0.072266 0.095703
+1 0.325195 0.398438 0.044922 0.113281
+0 0.663086 0.458984 0.060547 0.109375
diff --git a/module3/training/train/labels/frame_20260905_210700_110395_022_jpg.rf.44eb906b432b749c01fcd4d74bd8a1fb.txt b/module3/training/train/labels/frame_20260905_210700_110395_022_jpg.rf.44eb906b432b749c01fcd4d74bd8a1fb.txt
new file mode 100644
index 0000000..726e416
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210700_110395_022_jpg.rf.44eb906b432b749c01fcd4d74bd8a1fb.txt
@@ -0,0 +1,4 @@
+1 0.32421875 0.40625 0.046875 0.1171875
+1 0.602539 0.319336 0.072266 0.091797
+2 0.493164 0.460938 0.072266 0.074219
+0 0.664062 0.449219 0.058594 0.109375
diff --git a/module3/training/train/labels/frame_20260905_210700_506694_023_jpg.rf.f33dd25d7bd5ef339163e12c8dd9bd87.txt b/module3/training/train/labels/frame_20260905_210700_506694_023_jpg.rf.f33dd25d7bd5ef339163e12c8dd9bd87.txt
new file mode 100644
index 0000000..9618f4a
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210700_506694_023_jpg.rf.f33dd25d7bd5ef339163e12c8dd9bd87.txt
@@ -0,0 +1,4 @@
+1 0.322266 0.416016 0.042969 0.113281
+1 0.597656 0.315430 0.074219 0.087891
+2 0.494141 0.461914 0.070312 0.080078
+0 0.663086 0.441406 0.056641 0.113281
diff --git a/module3/training/train/labels/frame_20260905_210702_141692_026_jpg.rf.9e912fb265aefa2b5ee735f8fa310b0c.txt b/module3/training/train/labels/frame_20260905_210702_141692_026_jpg.rf.9e912fb265aefa2b5ee735f8fa310b0c.txt
new file mode 100644
index 0000000..f4df874
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210702_141692_026_jpg.rf.9e912fb265aefa2b5ee735f8fa310b0c.txt
@@ -0,0 +1,4 @@
+1 0.319336 0.458984 0.041016 0.113281
+2 0.492188 0.464844 0.062500 0.089844
+1 0.573242 0.296875 0.083984 0.078125
+0 0.656250 0.406250 0.046875 0.117188
diff --git a/module3/training/train/labels/frame_20260905_210702_399319_027_jpg.rf.6c78c1d131026eeb52d1e8afcb6e9c13.txt b/module3/training/train/labels/frame_20260905_210702_399319_027_jpg.rf.6c78c1d131026eeb52d1e8afcb6e9c13.txt
new file mode 100644
index 0000000..272d683
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210702_399319_027_jpg.rf.6c78c1d131026eeb52d1e8afcb6e9c13.txt
@@ -0,0 +1,4 @@
+1 0.319336 0.462891 0.041016 0.113281
+1 0.569336 0.295898 0.080078 0.076172
+2 0.491211 0.464844 0.060547 0.089844
+0 0.657227 0.401367 0.044922 0.115234
diff --git a/module3/training/train/labels/frame_20260905_210702_965293_028_jpg.rf.40d0ed62c9310dfcdc4c177df32f86f5.txt b/module3/training/train/labels/frame_20260905_210702_965293_028_jpg.rf.40d0ed62c9310dfcdc4c177df32f86f5.txt
new file mode 100644
index 0000000..57c16e3
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210702_965293_028_jpg.rf.40d0ed62c9310dfcdc4c177df32f86f5.txt
@@ -0,0 +1,4 @@
+1 0.320312 0.463867 0.042969 0.115234
+1 0.569336 0.293945 0.080078 0.076172
+2 0.491211 0.464844 0.060547 0.089844
+0 0.656250 0.400391 0.042969 0.117188
diff --git a/module3/training/train/labels/frame_20260905_210705_817035_030_jpg.rf.dc252bacfbb9deadcadc0f9800c9740a.txt b/module3/training/train/labels/frame_20260905_210705_817035_030_jpg.rf.dc252bacfbb9deadcadc0f9800c9740a.txt
new file mode 100644
index 0000000..ee9f473
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210705_817035_030_jpg.rf.dc252bacfbb9deadcadc0f9800c9740a.txt
@@ -0,0 +1,4 @@
+1 0.321289 0.454102 0.041016 0.115234
+1 0.576172 0.296875 0.082031 0.078125
+2 0.494141 0.463867 0.062500 0.091797
+0 0.660156 0.407227 0.046875 0.115234
diff --git a/module3/training/train/labels/frame_20260905_210706_206209_031_jpg.rf.f241fbe17947c9cd9b2f9ed337af58b4.txt b/module3/training/train/labels/frame_20260905_210706_206209_031_jpg.rf.f241fbe17947c9cd9b2f9ed337af58b4.txt
new file mode 100644
index 0000000..b957034
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210706_206209_031_jpg.rf.f241fbe17947c9cd9b2f9ed337af58b4.txt
@@ -0,0 +1,4 @@
+1 0.321289 0.442383 0.041016 0.115234
+1 0.584961 0.301758 0.080078 0.083984
+0 0.664062 0.416992 0.050781 0.115234
+2 0.495117 0.461914 0.064453 0.087891
diff --git a/module3/training/train/labels/frame_20260905_210707_032854_032_jpg.rf.98cc67af2131e8bd5f43f38c4c882c23.txt b/module3/training/train/labels/frame_20260905_210707_032854_032_jpg.rf.98cc67af2131e8bd5f43f38c4c882c23.txt
new file mode 100644
index 0000000..4914b53
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210707_032854_032_jpg.rf.98cc67af2131e8bd5f43f38c4c882c23.txt
@@ -0,0 +1,4 @@
+1 0.326172 0.419922 0.042969 0.117188
+1 0.603516 0.311523 0.078125 0.091797
+2 0.500977 0.462891 0.068359 0.078125
+0 0.669922 0.438477 0.058594 0.115234
diff --git a/module3/training/train/labels/frame_20260905_210707_562683_033_jpg.rf.25d15962fca66176b4853c8df3c21484.txt b/module3/training/train/labels/frame_20260905_210707_562683_033_jpg.rf.25d15962fca66176b4853c8df3c21484.txt
new file mode 100644
index 0000000..f8e8292
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210707_562683_033_jpg.rf.25d15962fca66176b4853c8df3c21484.txt
@@ -0,0 +1,4 @@
+1 0.330078 0.407227 0.046875 0.119141
+1 0.615234 0.318359 0.074219 0.097656
+2 0.502930 0.461914 0.072266 0.080078
+0 0.674805 0.450195 0.060547 0.111328
diff --git a/module3/training/train/labels/frame_20260905_210709_483238_037_jpg.rf.1a1b9fa20f9975c6759896ca85b1800f.txt b/module3/training/train/labels/frame_20260905_210709_483238_037_jpg.rf.1a1b9fa20f9975c6759896ca85b1800f.txt
new file mode 100644
index 0000000..5911c8d
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210709_483238_037_jpg.rf.1a1b9fa20f9975c6759896ca85b1800f.txt
@@ -0,0 +1,4 @@
+1 0.350586 0.360352 0.056641 0.115234
+2 0.512695 0.465820 0.080078 0.064453
+1 0.653320 0.357422 0.064453 0.113281
+0 0.680664 0.506836 0.076172 0.103516
diff --git a/module3/training/train/labels/frame_20260905_210709_889817_038_jpg.rf.594519111286b30c71761a839ca281b3.txt b/module3/training/train/labels/frame_20260905_210709_889817_038_jpg.rf.594519111286b30c71761a839ca281b3.txt
new file mode 100644
index 0000000..5e1d7e9
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210709_889817_038_jpg.rf.594519111286b30c71761a839ca281b3.txt
@@ -0,0 +1,4 @@
+1 0.353516 0.355469 0.058594 0.117188
+1 0.655273 0.363281 0.060547 0.113281
+2 0.514648 0.465820 0.080078 0.060547
+0 0.681641 0.514648 0.078125 0.103516
diff --git a/module3/training/train/labels/frame_20260905_210710_303577_039_jpg.rf.11cea1c469c45220aa8eae5ae7c2d5a3.txt b/module3/training/train/labels/frame_20260905_210710_303577_039_jpg.rf.11cea1c469c45220aa8eae5ae7c2d5a3.txt
new file mode 100644
index 0000000..a9b0b56
--- /dev/null
+++ b/module3/training/train/labels/frame_20260905_210710_303577_039_jpg.rf.11cea1c469c45220aa8eae5ae7c2d5a3.txt
@@ -0,0 +1,4 @@
+1 0.353516 0.355469 0.058594 0.117188
+1 0.656250 0.363281 0.062500 0.113281
+2 0.513672 0.465820 0.082031 0.060547
+0 0.681641 0.517578 0.078125 0.105469
diff --git a/module4/.gitignore b/module4/.gitignore
new file mode 100644
index 0000000..147e659
--- /dev/null
+++ b/module4/.gitignore
@@ -0,0 +1,5 @@
+node_modules/
+dist/
+*.log
+*.tsbuildinfo
+.env
diff --git a/module4/README.md b/module4/README.md
new file mode 100644
index 0000000..6fe1030
--- /dev/null
+++ b/module4/README.md
@@ -0,0 +1,127 @@
+# Модуль Г — веб-интерфейс FMS
+
+Одностраничная панель управления двумя роверами. Стек: React, TypeScript, Vite,
+Tailwind CSS 4, Bun и небольшой ROS 2-мост на Python.
+
+## Что реализовано
+
+- выбор RMC1 или RMC2;
+- положение, скорость и история движения обоих роверов;
+- ArUco-граф 6 × 6 с координатами маркеров 0–35;
+- карта занятости RMC1 из `/map`;
+- облако точек `/RMC*/scan`, повернутое и перенесённое вместе с ровером;
+- план Nav2 из `/RMC*/plan` и текущая целевая точка;
+- ручное управление кнопками и клавишами W/A/S/D, для RMC1 также Q/E;
+- watchdog: после отпускания клавиши или потери окна скорость обнуляется;
+- установка текущей позиции через `/RMC*/initialpose` без движения ровера;
+- автономная цель через Nav2, с простым контроллером по одометрии как fallback;
+- независимый аварийный стоп с отменой активной Nav2-задачи;
+- схват RMC1 и лифт RMC2;
+- вольтаж из стандартных ROS-топиков, если такой топик доступен в окружении;
+- WebSocket-телеметрия с частотой 5 Гц;
+- mock-режим для проверки вебки без ROS/Webots.
+
+## Запуск на VM
+
+Нужен Bun и уже собранное ROS 2-окружение соревнования.
+
+```bash
+cd ~/scripts/mvch/module4
+bun install
+bun run build
+```
+
+В каждом ROS-терминале сначала подключить Jazzy и workspace:
+
+```bash
+source /opt/ros/jazzy/setup.bash
+source ~/ros2_ws/install/setup.bash
+```
+
+1. Запустить карту с двумя роверами:
+
+```bash
+ros2 launch ar_webots_fms_ros2 module5.launch.py
+```
+
+2. Для полноценной автономной навигации RMC1 запустить Nav2:
+
+```bash
+ros2 launch ar_nav_ros2 bringup_launch.py namespace:=/RMC1 robot_type:=rmc1
+```
+
+Если Nav2 в образе не установлен или action недоступен, ROS-мост автоматически
+использует простой контроллер по одометрии. Он доводит оба ровера до x/y/yaw, но
+не строит обход сложных препятствий, поэтому Nav2 для RMC1 предпочтительнее.
+
+3. В третьем, также ROS-sourced терминале запустить FMS:
+
+```bash
+cd ~/scripts/mvch/module4
+bun run start
+```
+
+Открыть <http://localhost:3000>. Сервер Bun сам запускает
+`server/ros_bridge.py`; отдельно стартовать Python-файл не нужно.
+
+Для разработки с Vite HMR:
+
+```bash
+bun run dev
+```
+
+Страница будет на <http://localhost:5173>, API — на порту 3001.
+
+## Быстрая проверка без симулятора
+
+```bash
+bun run build
+MOCK_ROS=1 bun run start
+```
+
+Mock не используется на соревновании. Он нужен только для проверки кнопок,
+WebSocket и компоновки интерфейса.
+
+## ROS-топики
+
+| Назначение | RMC1 | RMC2 |
+| --- | --- | --- |
+| Одометрия | `/RMC1/odometry` | `/RMC2/odometry` |
+| Лидар | `/RMC1/scan` | `/RMC2/scan` |
+| Ручная скорость | `/RMC1/cmd_vel` | `/RMC2/cmd_vel` |
+| Начальная позиция | `/RMC1/initialpose` | `/RMC2/initialpose` |
+| Цель | `/RMC1/goal_pose` | `/RMC2/goal_pose` |
+| План | `/RMC1/plan` | `/RMC2/plan` |
+| Рабочий инструмент | `.../gripper_trajectory_controller/joint_trajectory` | `/RMC2/lift` |
+
+Дополнительно используются `/map`, `/RMC2/aruco_id` и
+`/RMC2/lift_status`.
+
+Симулятор из открытого пакета не публикует напряжение аккумуляторов. Мост уже
+подписан на `/RMC*/battery_state` (`sensor_msgs/BatteryState`) и
+`/RMC*/battery_voltage` (`std_msgs/Float64`). Если на площадке топика тоже не
+будет, интерфейс честно покажет `нет топика`, а не фиктивное значение.
+
+## HTTP API
+
+- `GET /api/health` — состояние Bun и ROS-моста;
+- `GET /api/state` — последний снимок телеметрии;
+- `POST /api/command` — команда управления;
+- `WS /ws` — телеметрия в реальном времени.
+
+Пример остановки RMC1:
+
+```bash
+curl -X POST http://localhost:3000/api/command \
+  -H 'content-type: application/json' \
+  -d '{"type":"emergency","robot":"RMC1","active":true}'
+```
+
+## Проверки
+
+```bash
+bun run check
+bun test
+bun run build
+python3 -m py_compile server/ros_bridge.py
+```
diff --git a/module4/bun.lock b/module4/bun.lock
new file mode 100644
index 0000000..0865e8f
--- /dev/null
+++ b/module4/bun.lock
@@ -0,0 +1,298 @@
+{
+  "lockfileVersion": 2,
+  "configVersion": 1,
+  "workspaces": {
+    "": {
+      "name": "mvch-module4-fms",
+      "dependencies": {
+        "@tailwindcss/vite": "^4.2.2",
+        "@vitejs/plugin-react-swc": "^3.11.0",
+        "react": "^19.2.5",
+        "react-dom": "^19.2.5",
+        "tailwindcss": "^4.2.2",
+        "vite": "^6.4.2",
+      },
+      "devDependencies": {
+        "@types/bun": "latest",
+        "@types/react": "^19.2.14",
+        "@types/react-dom": "^19.2.3",
+        "typescript": "~5.8.3",
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+    "scheduler": ["scheduler@0.27.0", "", {}, "sha512-eNv+WrVbKu1f3vbYJT/xtiF5syA5HPIMtf9IgY/nKg0sWqzAUEvqY/xm7OcZc/qafLx/iO9FgOmeSAp4v5ti/Q=="],
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+    "tapable": ["tapable@2.3.3", "", {}, "sha512-uxc/zpqFg6x7C8vOE7lh6Lbda8eEL9zmVm/PLeTPBRhh1xCgdWaQ+J1CUieGpIfm2HdtsUpRv+HshiasBMcc6A=="],
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+
+    "@tailwindcss/oxide-wasm32-wasi/@napi-rs/wasm-runtime": ["@napi-rs/wasm-runtime@1.2.3", "", { "dependencies": { "@tybys/wasm-util": "^0.10.3" }, "peerDependencies": { "@emnapi/core": "^1.7.1 || ^2.0.0-alpha.4", "@emnapi/runtime": "^1.7.1 || ^2.0.0-alpha.4" }, "bundled": true }, "sha512-UMduMbqO5s5zF2NkNacMT/yK5Y5QiKvWr2+50bzIIxFDwVJ2h49b+oyjaCGPhJxd2/gC2x39EHv/gHVuu36x2Q=="],
+
+    "@tailwindcss/oxide-wasm32-wasi/@tybys/wasm-util": ["@tybys/wasm-util@0.10.3", "", { "dependencies": { "tslib": "^2.4.0" }, "bundled": true }, "sha512-F3fo1MYrRJYL3zER0OUOmkutjr1Vp23m7OsSgp7nq4SP6OqX6C/56XFIPAl5bt3zaBRjmW7SGz3u/6LwFpYcOg=="],
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+    "@tailwindcss/oxide-wasm32-wasi/tslib": ["tslib@2.8.1", "", { "bundled": true }, "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w=="],
+  }
+}
diff --git a/module4/index.html b/module4/index.html
new file mode 100644
index 0000000..93f4ba4
--- /dev/null
+++ b/module4/index.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="ru">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta name="theme-color" content="#0f172a" />
+    <title>MVCH FMS - модуль Г</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>
diff --git a/module4/package.json b/module4/package.json
new file mode 100644
index 0000000..afdc9ca
--- /dev/null
+++ b/module4/package.json
@@ -0,0 +1,29 @@
+{
+  "name": "mvch-module4-fms",
+  "private": true,
+  "version": "1.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "bun run scripts/dev.ts",
+    "mock": "MOCK_ROS=1 bun run scripts/dev.ts",
+    "build": "tsc -b && vite build",
+    "start": "bun run server/index.ts",
+    "run": "bun run build && bun run start",
+    "check": "tsc -b",
+    "test": "bun test"
+  },
+  "dependencies": {
+    "@tailwindcss/vite": "^4.2.2",
+    "@vitejs/plugin-react-swc": "^3.11.0",
+    "react": "^19.2.5",
+    "react-dom": "^19.2.5",
+    "tailwindcss": "^4.2.2",
+    "vite": "^6.4.2"
+  },
+  "devDependencies": {
+    "@types/bun": "latest",
+    "@types/react": "^19.2.14",
+    "@types/react-dom": "^19.2.3",
+    "typescript": "~5.8.3"
+  }
+}
diff --git a/module4/scripts/dev.ts b/module4/scripts/dev.ts
new file mode 100644
index 0000000..3bd8cae
--- /dev/null
+++ b/module4/scripts/dev.ts
@@ -0,0 +1,18 @@
+const bun = process.execPath
+const env = { ...process.env, NODE_ENV: 'development' }
+const backend = Bun.spawn([bun, 'run', 'server/index.ts'], { env, stdin: 'inherit', stdout: 'inherit', stderr: 'inherit' })
+const frontend = Bun.spawn([bun, 'x', 'vite'], { env, stdin: 'inherit', stdout: 'inherit', stderr: 'inherit' })
+
+async function stop(): Promise<void> {
+  backend.kill()
+  frontend.kill()
+}
+
+process.on('SIGINT', stop)
+process.on('SIGTERM', stop)
+
+const result = await Promise.race([backend.exited, frontend.exited])
+await stop()
+process.exit(result)
+
+export {}
diff --git a/module4/server/commands.ts b/module4/server/commands.ts
new file mode 100644
index 0000000..1b395f3
--- /dev/null
+++ b/module4/server/commands.ts
@@ -0,0 +1,42 @@
+import type { Command, Pose, RobotId } from '../src/types'
+
+const ROBOTS: RobotId[] = ['RMC1', 'RMC2']
+
+function isRobot(value: unknown): value is RobotId {
+  return typeof value === 'string' && ROBOTS.includes(value as RobotId)
+}
+
+function isFiniteNumber(value: unknown): value is number {
+  return typeof value === 'number' && Number.isFinite(value)
+}
+
+function isPose(value: unknown): value is Pose {
+  if (!value || typeof value !== 'object') return false
+  const pose = value as Record<string, unknown>
+  return isFiniteNumber(pose.x) && isFiniteNumber(pose.y) && isFiniteNumber(pose.yaw)
+}
+
+export function isCommand(value: unknown): value is Command {
+  if (!value || typeof value !== 'object') return false
+  const command = value as Record<string, unknown>
+  if (!isRobot(command.robot) || typeof command.type !== 'string') return false
+
+  switch (command.type) {
+    case 'manual':
+      return isFiniteNumber(command.x) && isFiniteNumber(command.y) && isFiniteNumber(command.yaw)
+    case 'stop':
+    case 'cancel_goal':
+      return true
+    case 'emergency':
+      return typeof command.active === 'boolean'
+    case 'set_pose':
+    case 'set_goal':
+      return isPose(command.pose)
+    case 'lift':
+      return command.robot === 'RMC2' && (command.height === 0 || command.height === 0.1)
+    case 'gripper':
+      return command.robot === 'RMC1' && (command.state === 'open' || command.state === 'closed')
+    default:
+      return false
+  }
+}
diff --git a/module4/server/index.ts b/module4/server/index.ts
new file mode 100644
index 0000000..11b7162
--- /dev/null
+++ b/module4/server/index.ts
@@ -0,0 +1,133 @@
+import { dirname, join } from 'node:path'
+import type { Server, ServerWebSocket } from 'bun'
+import type { Command, FmsState } from '../src/types'
+import { isCommand } from './commands'
+import { applyMockCommand, initialState, tickMock } from './state'
+
+type WsData = { connectedAt: number }
+
+const moduleDir = dirname(dirname(import.meta.path))
+const port = Number(process.env.PORT ?? (process.env.NODE_ENV === 'development' ? 3001 : 3000))
+const mock = process.env.MOCK_ROS === '1'
+let state = initialState(mock ? 'mock' : 'ros')
+let bridge: Bun.Subprocess<'pipe', 'pipe', 'inherit'> | null = null
+
+function json(data: unknown, status = 200): Response {
+  return Response.json(data, { status, headers: { 'cache-control': 'no-store' } })
+}
+
+function sendToBridge(command: Command): boolean {
+  if (mock) {
+    applyMockCommand(state, command)
+    return true
+  }
+  if (!bridge?.stdin) return false
+  bridge.stdin.write(`${JSON.stringify(command)}\n`)
+  bridge.stdin.flush()
+  return true
+}
+
+function broadcast(server: Server<WsData>): void {
+  server.publish('telemetry', JSON.stringify(state))
+}
+
+async function readBridge(server: Server<WsData>): Promise<void> {
+  if (!bridge?.stdout) return
+  const decoder = new TextDecoder()
+  let pending = ''
+  for await (const chunk of bridge.stdout) {
+    pending += decoder.decode(chunk, { stream: true })
+    const lines = pending.split('\n')
+    pending = lines.pop() ?? ''
+    for (const line of lines) {
+      if (!line.trim()) continue
+      try {
+        const next = JSON.parse(line) as FmsState
+        if (next.type === 'state') {
+          state = next
+          state.mode = 'ros'
+          state.bridgeOnline = true
+          state.bridgeError = null
+          broadcast(server)
+        }
+      } catch {
+        console.error(`[ROS bridge] invalid JSON: ${line.slice(0, 180)}`)
+      }
+    }
+  }
+  state.bridgeOnline = false
+  state.bridgeError = `ROS bridge stopped (code ${await bridge.exited})`
+  broadcast(server)
+}
+
+function startBridge(server: Server<WsData>): void {
+  if (mock) {
+    setInterval(() => {
+      tickMock(state)
+      broadcast(server)
+    }, 100)
+    return
+  }
+
+  bridge = Bun.spawn(['python3', join(moduleDir, 'server', 'ros_bridge.py')], {
+    cwd: moduleDir,
+    stdin: 'pipe',
+    stdout: 'pipe',
+    stderr: 'inherit',
+    env: { ...process.env, PYTHONUNBUFFERED: '1' },
+  })
+  void readBridge(server)
+}
+
+const server = Bun.serve<WsData>({
+  port,
+  hostname: '0.0.0.0',
+  async fetch(request, server) {
+    const url = new URL(request.url)
+    if (url.pathname === '/ws') {
+      return server.upgrade(request, { data: { connectedAt: Date.now() } })
+        ? undefined
+        : new Response('WebSocket upgrade failed', { status: 400 })
+    }
+    if (url.pathname === '/api/health') {
+      return json({ ok: true, mode: state.mode, bridgeOnline: state.bridgeOnline, timestamp: Date.now() })
+    }
+    if (url.pathname === '/api/state') return json(state)
+    if (url.pathname === '/api/command' && request.method === 'POST') {
+      let body: unknown
+      try {
+        body = await request.json()
+      } catch {
+        return json({ ok: false, error: 'invalid JSON' }, 400)
+      }
+      if (!isCommand(body)) return json({ ok: false, error: 'invalid command' }, 400)
+      if (!sendToBridge(body)) return json({ ok: false, error: 'ROS bridge is offline' }, 503)
+      broadcast(server)
+      return json({ ok: true })
+    }
+
+    const relative = url.pathname === '/' ? 'index.html' : url.pathname.slice(1)
+    if (relative.includes('..')) return new Response('Bad path', { status: 400 })
+    const file = Bun.file(join(moduleDir, 'dist', relative))
+    if (await file.exists()) return new Response(file)
+    const fallback = Bun.file(join(moduleDir, 'dist', 'index.html'))
+    return (await fallback.exists()) ? new Response(fallback) : new Response('Run bun run build first', { status: 404 })
+  },
+  websocket: {
+    open(ws) {
+      ws.subscribe('telemetry')
+      ws.send(JSON.stringify(state))
+    },
+    message(ws: ServerWebSocket<WsData>, message) {
+      try {
+        const command: unknown = JSON.parse(String(message))
+        if (isCommand(command)) sendToBridge(command)
+      } catch {
+        ws.send(JSON.stringify({ type: 'error', message: 'invalid command' }))
+      }
+    },
+  },
+})
+
+startBridge(server)
+console.log(`MVCH FMS: http://0.0.0.0:${port} (${mock ? 'mock' : 'ROS'})`)
diff --git a/module4/server/ros_bridge.py b/module4/server/ros_bridge.py
new file mode 100644
index 0000000..4aa797e
--- /dev/null
+++ b/module4/server/ros_bridge.py
@@ -0,0 +1,504 @@
+#!/usr/bin/env python3
+"""Small JSON <-> ROS 2 bridge for the module G web interface.
+
+stdin: one JSON command per line
+stdout: one JSON state per line (only machine-readable data)
+stderr: diagnostics
+"""
+
+import json
+import math
+import queue
+import sys
+import threading
+import time
+from copy import deepcopy
+
+import rclpy
+from builtin_interfaces.msg import Duration
+from geometry_msgs.msg import PoseStamped, PoseWithCovarianceStamped, Twist
+from nav_msgs.msg import OccupancyGrid, Odometry, Path
+from rclpy.action import ActionClient
+from rclpy.executors import ExternalShutdownException
+from rclpy.node import Node
+from rclpy.qos import DurabilityPolicy, HistoryPolicy, QoSProfile, ReliabilityPolicy
+from sensor_msgs.msg import BatteryState, LaserScan
+from std_msgs.msg import Float64, String
+from trajectory_msgs.msg import JointTrajectory, JointTrajectoryPoint
+
+try:
+    from nav2_msgs.action import NavigateToPose
+except ImportError:
+    NavigateToPose = None
+
+
+ROBOTS = ("RMC1", "RMC2")
+MANUAL_TIMEOUT = 0.35
+
+
+def empty_robot():
+    return {
+        "online": False,
+        "lastMessageMs": None,
+        "pose": {"x": 0.0, "y": 0.0, "yaw": 0.0},
+        "velocity": {"x": 0.0, "y": 0.0, "yaw": 0.0},
+        "battery": None,
+        "lidar": [],
+        "trail": [],
+        "plan": [],
+        "goal": None,
+        "emergency": False,
+        "arucoId": None,
+        "liftStatus": None,
+        "gripper": "unknown",
+    }
+
+
+def yaw_from_quaternion(q):
+    siny = 2.0 * (q.w * q.z + q.x * q.y)
+    cosy = 1.0 - 2.0 * (q.y * q.y + q.z * q.z)
+    return math.atan2(siny, cosy)
+
+
+def quaternion_from_yaw(yaw):
+    return 0.0, 0.0, math.sin(yaw / 2.0), math.cos(yaw / 2.0)
+
+
+def wrap_angle(angle):
+    return math.atan2(math.sin(angle), math.cos(angle))
+
+
+def clamp(value, limit):
+    return max(-limit, min(limit, value))
+
+
+class FmsBridge(Node):
+    def __init__(self):
+        super().__init__("mvch_fms_bridge")
+        self.commands = queue.Queue()
+        self.lock = threading.Lock()
+        self.state = {
+            "type": "state",
+            "timestamp": int(time.time() * 1000),
+            "mode": "ros",
+            "bridgeOnline": True,
+            "bridgeError": None,
+            "map": None,
+            "robots": {robot: empty_robot() for robot in ROBOTS},
+        }
+        self.last_seen = {robot: 0.0 for robot in ROBOTS}
+        self.last_manual = {robot: 0.0 for robot in ROBOTS}
+        self.last_sent_zero = {robot: True for robot in ROBOTS}
+        self.pose_offsets = {robot: {"x": 0.0, "y": 0.0, "yaw": 0.0} for robot in ROBOTS}
+        self.raw_pose = {robot: {"x": 0.0, "y": 0.0, "yaw": 0.0} for robot in ROBOTS}
+        self.goal_handles = {robot: None for robot in ROBOTS}
+        self.simple_goals = {robot: None for robot in ROBOTS}
+
+        sensor_qos = QoSProfile(
+            reliability=ReliabilityPolicy.BEST_EFFORT,
+            durability=DurabilityPolicy.VOLATILE,
+            history=HistoryPolicy.KEEP_LAST,
+            depth=5,
+        )
+        map_qos = QoSProfile(
+            reliability=ReliabilityPolicy.RELIABLE,
+            durability=DurabilityPolicy.TRANSIENT_LOCAL,
+            history=HistoryPolicy.KEEP_LAST,
+            depth=1,
+        )
+
+        self.cmd_publishers = {}
+        self.pose_publishers = {}
+        self.goal_publishers = {}
+        self.nav_clients = {}
+        for robot in ROBOTS:
+            self.cmd_publishers[robot] = self.create_publisher(Twist, f"/{robot}/cmd_vel", 10)
+            self.pose_publishers[robot] = self.create_publisher(
+                PoseWithCovarianceStamped, f"/{robot}/initialpose", 10
+            )
+            self.goal_publishers[robot] = self.create_publisher(PoseStamped, f"/{robot}/goal_pose", 10)
+            if NavigateToPose is not None:
+                self.nav_clients[robot] = ActionClient(
+                    self, NavigateToPose, f"/{robot}/navigate_to_pose"
+                )
+            self.create_subscription(
+                Odometry,
+                f"/{robot}/odometry",
+                lambda msg, r=robot: self.on_odometry(r, msg),
+                sensor_qos,
+            )
+            self.create_subscription(
+                LaserScan,
+                f"/{robot}/scan",
+                lambda msg, r=robot: self.on_scan(r, msg),
+                sensor_qos,
+            )
+            self.create_subscription(
+                Path,
+                f"/{robot}/plan",
+                lambda msg, r=robot: self.on_path(r, msg),
+                10,
+            )
+            self.create_subscription(
+                BatteryState,
+                f"/{robot}/battery_state",
+                lambda msg, r=robot: self.on_battery(r, msg.voltage),
+                sensor_qos,
+            )
+            self.create_subscription(
+                Float64,
+                f"/{robot}/battery_voltage",
+                lambda msg, r=robot: self.on_battery(r, msg.data),
+                sensor_qos,
+            )
+
+        self.create_subscription(OccupancyGrid, "/map", self.on_map, map_qos)
+        self.create_subscription(OccupancyGrid, "/RMC1/map", self.on_map, map_qos)
+        self.create_subscription(String, "/RMC2/aruco_id", self.on_aruco, sensor_qos)
+        self.create_subscription(String, "/RMC2/lift_status", self.on_lift_status, 10)
+        self.lift_publisher = self.create_publisher(Float64, "/RMC2/lift", 10)
+        self.gripper_publisher = self.create_publisher(
+            JointTrajectory,
+            "/RMC1/arm95/gripper_trajectory_controller/joint_trajectory",
+            10,
+        )
+
+        self.create_timer(0.05, self.process_commands_and_watchdog)
+        self.create_timer(0.2, self.emit_state)
+
+    def mark_seen(self, robot):
+        self.last_seen[robot] = time.monotonic()
+
+    def on_odometry(self, robot, msg):
+        raw = {
+            "x": float(msg.pose.pose.position.x),
+            "y": float(msg.pose.pose.position.y),
+            "yaw": yaw_from_quaternion(msg.pose.pose.orientation),
+        }
+        with self.lock:
+            self.raw_pose[robot] = raw
+            offset = self.pose_offsets[robot]
+            pose = {
+                "x": raw["x"] + offset["x"],
+                "y": raw["y"] + offset["y"],
+                "yaw": raw["yaw"] + offset["yaw"],
+            }
+            rover = self.state["robots"][robot]
+            rover["pose"] = pose
+            rover["velocity"] = {
+                "x": float(msg.twist.twist.linear.x),
+                "y": float(msg.twist.twist.linear.y),
+                "yaw": float(msg.twist.twist.angular.z),
+            }
+            trail = rover["trail"]
+            if not trail or math.hypot(pose["x"] - trail[-1]["x"], pose["y"] - trail[-1]["y"]) > 0.04:
+                trail.append({"x": pose["x"], "y": pose["y"]})
+                del trail[:-250]
+            self.mark_seen(robot)
+
+    def on_scan(self, robot, msg):
+        with self.lock:
+            pose = self.state["robots"][robot]["pose"]
+            points = []
+            stride = max(1, len(msg.ranges) // 180)
+            for index in range(0, len(msg.ranges), stride):
+                distance = float(msg.ranges[index])
+                if not math.isfinite(distance) or distance < msg.range_min or distance > msg.range_max:
+                    continue
+                angle = msg.angle_min + index * msg.angle_increment + pose["yaw"]
+                points.append(
+                    {
+                        "x": pose["x"] + math.cos(angle) * distance,
+                        "y": pose["y"] + math.sin(angle) * distance,
+                    }
+                )
+            self.state["robots"][robot]["lidar"] = points[:200]
+            self.mark_seen(robot)
+
+    def on_path(self, robot, msg):
+        with self.lock:
+            self.state["robots"][robot]["plan"] = [
+                {"x": float(p.pose.position.x), "y": float(p.pose.position.y)}
+                for p in msg.poses[:: max(1, len(msg.poses) // 200)]
+            ][:200]
+
+    def on_map(self, msg):
+        width, height = int(msg.info.width), int(msg.info.height)
+        if not width or not height:
+            return
+        step = max(1, math.ceil(max(width, height) / 120))
+        sampled = []
+        for y in range(0, height, step):
+            for x in range(0, width, step):
+                sampled.append(int(msg.data[y * width + x]))
+        with self.lock:
+            self.state["map"] = {
+                "width": math.ceil(width / step),
+                "height": math.ceil(height / step),
+                "resolution": float(msg.info.resolution) * step,
+                "origin": {
+                    "x": float(msg.info.origin.position.x),
+                    "y": float(msg.info.origin.position.y),
+                },
+                "data": sampled,
+            }
+
+    def on_battery(self, robot, value):
+        if math.isfinite(float(value)):
+            with self.lock:
+                self.state["robots"][robot]["battery"] = round(float(value), 2)
+
+    def on_aruco(self, msg):
+        with self.lock:
+            self.state["robots"]["RMC2"]["arucoId"] = str(msg.data)
+            self.mark_seen("RMC2")
+
+    def on_lift_status(self, msg):
+        with self.lock:
+            self.state["robots"]["RMC2"]["liftStatus"] = str(msg.data)
+
+    def publish_twist(self, robot, x=0.0, y=0.0, yaw=0.0):
+        msg = Twist()
+        msg.linear.x = max(-0.7, min(0.7, float(x)))
+        msg.linear.y = max(-0.7, min(0.7, float(y))) if robot == "RMC1" else 0.0
+        msg.angular.z = max(-1.2, min(1.2, float(yaw)))
+        self.cmd_publishers[robot].publish(msg)
+
+    def process_commands_and_watchdog(self):
+        while True:
+            try:
+                command = self.commands.get_nowait()
+            except queue.Empty:
+                break
+            try:
+                self.handle_command(command)
+            except Exception as error:
+                print(f"command error: {error}", file=sys.stderr, flush=True)
+
+        now = time.monotonic()
+        with self.lock:
+            emergency = {r: self.state["robots"][r]["emergency"] for r in ROBOTS}
+            simple_goals = deepcopy(self.simple_goals)
+        for robot in ROBOTS:
+            stale = now - self.last_manual[robot] > MANUAL_TIMEOUT
+            if emergency[robot]:
+                self.publish_twist(robot)
+                self.last_sent_zero[robot] = True
+            elif simple_goals[robot] is not None:
+                self.drive_simple_goal(robot, simple_goals[robot])
+            elif stale and not self.last_sent_zero[robot]:
+                self.publish_twist(robot)
+                self.last_sent_zero[robot] = True
+
+    def handle_command(self, command):
+        kind = command.get("type")
+        robot = command.get("robot")
+        if robot not in ROBOTS:
+            return
+        with self.lock:
+            emergency = self.state["robots"][robot]["emergency"]
+
+        if kind == "manual" and not emergency:
+            self.cancel_navigation(robot)
+            with self.lock:
+                self.simple_goals[robot] = None
+                self.state["robots"][robot]["goal"] = None
+                self.state["robots"][robot]["plan"] = []
+            self.publish_twist(robot, command.get("x", 0), command.get("y", 0), command.get("yaw", 0))
+            self.last_manual[robot] = time.monotonic()
+            self.last_sent_zero[robot] = False
+        elif kind == "stop":
+            self.cancel_navigation(robot)
+            with self.lock:
+                self.simple_goals[robot] = None
+            self.publish_twist(robot)
+            self.last_sent_zero[robot] = True
+        elif kind == "emergency":
+            active = bool(command.get("active"))
+            with self.lock:
+                self.state["robots"][robot]["emergency"] = active
+            self.publish_twist(robot)
+            self.last_sent_zero[robot] = True
+            if active:
+                self.cancel_navigation(robot)
+                with self.lock:
+                    self.simple_goals[robot] = None
+        elif kind == "set_pose":
+            self.set_pose(robot, command.get("pose", {}))
+        elif kind == "set_goal" and not emergency:
+            self.set_goal(robot, command.get("pose", {}))
+        elif kind == "cancel_goal":
+            self.cancel_navigation(robot)
+            self.publish_twist(robot)
+            with self.lock:
+                self.simple_goals[robot] = None
+                self.state["robots"][robot]["goal"] = None
+                self.state["robots"][robot]["plan"] = []
+        elif kind == "lift" and robot == "RMC2" and not emergency:
+            height = 0.1 if float(command.get("height", 0)) >= 0.05 else 0.0
+            self.lift_publisher.publish(Float64(data=height))
+            with self.lock:
+                self.state["robots"][robot]["liftStatus"] = "command: up" if height else "command: down"
+        elif kind == "gripper" and robot == "RMC1" and not emergency:
+            self.set_gripper(command.get("state") == "open")
+
+    def set_pose(self, robot, pose):
+        x, y, yaw = float(pose.get("x", 0)), float(pose.get("y", 0)), float(pose.get("yaw", 0))
+        with self.lock:
+            raw = self.raw_pose[robot]
+            self.pose_offsets[robot] = {"x": x - raw["x"], "y": y - raw["y"], "yaw": yaw - raw["yaw"]}
+            self.state["robots"][robot]["pose"] = {"x": x, "y": y, "yaw": yaw}
+            self.state["robots"][robot]["trail"] = [{"x": x, "y": y}]
+        msg = PoseWithCovarianceStamped()
+        msg.header.stamp = self.get_clock().now().to_msg()
+        msg.header.frame_id = "map"
+        msg.pose.pose.position.x = x
+        msg.pose.pose.position.y = y
+        qx, qy, qz, qw = quaternion_from_yaw(yaw)
+        msg.pose.pose.orientation.x, msg.pose.pose.orientation.y = qx, qy
+        msg.pose.pose.orientation.z, msg.pose.pose.orientation.w = qz, qw
+        msg.pose.covariance[0] = msg.pose.covariance[7] = 0.25
+        msg.pose.covariance[35] = 0.07
+        self.pose_publishers[robot].publish(msg)
+
+    def make_goal(self, pose):
+        goal = PoseStamped()
+        goal.header.stamp = self.get_clock().now().to_msg()
+        goal.header.frame_id = "map"
+        goal.pose.position.x = float(pose.get("x", 0))
+        goal.pose.position.y = float(pose.get("y", 0))
+        qx, qy, qz, qw = quaternion_from_yaw(float(pose.get("yaw", 0)))
+        goal.pose.orientation.x, goal.pose.orientation.y = qx, qy
+        goal.pose.orientation.z, goal.pose.orientation.w = qz, qw
+        return goal
+
+    def set_goal(self, robot, pose):
+        goal = self.make_goal(pose)
+        self.goal_publishers[robot].publish(goal)
+        target = {"x": goal.pose.position.x, "y": goal.pose.position.y, "yaw": float(pose.get("yaw", 0))}
+        with self.lock:
+            rover = self.state["robots"][robot]
+            rover["goal"] = target
+            if not rover["plan"]:
+                rover["plan"] = [
+                    {"x": rover["pose"]["x"], "y": rover["pose"]["y"]},
+                    {"x": target["x"], "y": target["y"]},
+                ]
+        client = self.nav_clients.get(robot)
+        if client is not None and client.server_is_ready():
+            request = NavigateToPose.Goal()
+            request.pose = goal
+            future = client.send_goal_async(request)
+            future.add_done_callback(lambda f, r=robot: self.on_goal_response(r, f))
+        else:
+            with self.lock:
+                self.simple_goals[robot] = target
+            print(f"{robot}: Nav2 is unavailable; using odometry goal controller", file=sys.stderr, flush=True)
+
+    def drive_simple_goal(self, robot, target):
+        with self.lock:
+            pose = deepcopy(self.state["robots"][robot]["pose"])
+        dx = target["x"] - pose["x"]
+        dy = target["y"] - pose["y"]
+        distance = math.hypot(dx, dy)
+
+        if distance < 0.12:
+            yaw_error = wrap_angle(target["yaw"] - pose["yaw"])
+            if abs(yaw_error) < 0.12:
+                self.publish_twist(robot)
+                with self.lock:
+                    self.simple_goals[robot] = None
+                self.last_sent_zero[robot] = True
+            else:
+                self.publish_twist(robot, yaw=clamp(yaw_error * 1.5, 0.65))
+                self.last_sent_zero[robot] = False
+            return
+
+        if robot == "RMC1":
+            cosine, sine = math.cos(pose["yaw"]), math.sin(pose["yaw"])
+            body_x = cosine * dx + sine * dy
+            body_y = -sine * dx + cosine * dy
+            self.publish_twist(
+                robot,
+                x=clamp(body_x * 0.7, 0.38),
+                y=clamp(body_y * 0.7, 0.38),
+                yaw=clamp(wrap_angle(target["yaw"] - pose["yaw"]), 0.45),
+            )
+        else:
+            heading_error = wrap_angle(math.atan2(dy, dx) - pose["yaw"])
+            if abs(heading_error) > 0.28:
+                self.publish_twist(robot, yaw=clamp(heading_error * 1.4, 0.7))
+            else:
+                self.publish_twist(
+                    robot,
+                    x=min(0.32, max(0.10, distance * 0.65)),
+                    yaw=clamp(heading_error * 1.2, 0.45),
+                )
+        self.last_sent_zero[robot] = False
+
+    def on_goal_response(self, robot, future):
+        handle = future.result()
+        if handle.accepted:
+            self.goal_handles[robot] = handle
+        else:
+            print(f"{robot}: Nav2 rejected goal", file=sys.stderr, flush=True)
+
+    def cancel_navigation(self, robot):
+        handle = self.goal_handles.get(robot)
+        if handle is not None:
+            handle.cancel_goal_async()
+            self.goal_handles[robot] = None
+
+    def set_gripper(self, opened):
+        msg = JointTrajectory()
+        msg.joint_names = ["left_joint", "right_joint"]
+        point = JointTrajectoryPoint()
+        value = 0.04 if opened else 0.0213
+        point.positions = [value, value]
+        point.time_from_start = Duration(sec=1)
+        msg.points = [point]
+        self.gripper_publisher.publish(msg)
+        with self.lock:
+            self.state["robots"]["RMC1"]["gripper"] = "open" if opened else "closed"
+
+    def emit_state(self):
+        now = time.monotonic()
+        with self.lock:
+            for robot in ROBOTS:
+                age = now - self.last_seen[robot]
+                self.state["robots"][robot]["online"] = age < 2.0
+                self.state["robots"][robot]["lastMessageMs"] = round(age * 1000) if self.last_seen[robot] else None
+            self.state["timestamp"] = int(time.time() * 1000)
+            payload = deepcopy(self.state)
+        print(json.dumps(payload, ensure_ascii=False, separators=(",", ":")), flush=True)
+
+
+def read_commands(node):
+    for line in sys.stdin:
+        try:
+            command = json.loads(line)
+            if isinstance(command, dict):
+                node.commands.put(command)
+        except json.JSONDecodeError as error:
+            print(f"invalid command JSON: {error}", file=sys.stderr, flush=True)
+
+
+def main():
+    rclpy.init()
+    node = FmsBridge()
+    threading.Thread(target=read_commands, args=(node,), daemon=True).start()
+    try:
+        rclpy.spin(node)
+    except (KeyboardInterrupt, ExternalShutdownException):
+        pass
+    finally:
+        if rclpy.ok():
+            for robot in ROBOTS:
+                node.publish_twist(robot)
+        node.destroy_node()
+        if rclpy.ok():
+            rclpy.shutdown()
+
+
+if __name__ == "__main__":
+    main()
diff --git a/module4/server/state.test.ts b/module4/server/state.test.ts
new file mode 100644
index 0000000..5038a4e
--- /dev/null
+++ b/module4/server/state.test.ts
@@ -0,0 +1,31 @@
+import { describe, expect, test } from 'bun:test'
+import { isCommand } from './commands'
+import { applyMockCommand, initialState, tickMock } from './state'
+
+describe('command validation', () => {
+  test('accepts valid commands', () => {
+    expect(isCommand({ type: 'manual', robot: 'RMC1', x: 0.4, y: 0.2, yaw: 0 })).toBe(true)
+    expect(isCommand({ type: 'lift', robot: 'RMC2', height: 0.1 })).toBe(true)
+    expect(isCommand({ type: 'gripper', robot: 'RMC1', state: 'closed' })).toBe(true)
+  })
+
+  test('rejects wrong robot tools and non-finite coordinates', () => {
+    expect(isCommand({ type: 'lift', robot: 'RMC1', height: 0.1 })).toBe(false)
+    expect(isCommand({ type: 'gripper', robot: 'RMC2', state: 'open' })).toBe(false)
+    expect(isCommand({ type: 'set_goal', robot: 'RMC1', pose: { x: Number.NaN, y: 0, yaw: 0 } })).toBe(false)
+  })
+})
+
+describe('mock state', () => {
+  test('emergency stop blocks motion and tool state is retained', () => {
+    const state = initialState('mock')
+    applyMockCommand(state, { type: 'manual', robot: 'RMC2', x: 0.5, y: 0, yaw: 0 })
+    tickMock(state, 1)
+    expect(state.robots.RMC2.pose.x).toBeCloseTo(0.5)
+
+    applyMockCommand(state, { type: 'lift', robot: 'RMC2', height: 0.1 })
+    applyMockCommand(state, { type: 'emergency', robot: 'RMC2', active: true })
+    expect(state.robots.RMC2.velocity.x).toBe(0)
+    expect(state.robots.RMC2.liftStatus).toBe('up')
+  })
+})
diff --git a/module4/server/state.ts b/module4/server/state.ts
new file mode 100644
index 0000000..8eff042
--- /dev/null
+++ b/module4/server/state.ts
@@ -0,0 +1,116 @@
+import type { Command, FmsState, Point, RobotId, RobotState } from '../src/types'
+
+const robot = (x: number, y: number): RobotState => ({
+  online: false,
+  lastMessageMs: null,
+  pose: { x, y, yaw: 0 },
+  velocity: { x: 0, y: 0, yaw: 0 },
+  battery: null,
+  lidar: [],
+  trail: [{ x, y }],
+  plan: [],
+  goal: null,
+  emergency: false,
+  arucoId: null,
+  liftStatus: null,
+  gripper: 'unknown',
+})
+
+export function initialState(mode: 'ros' | 'mock'): FmsState {
+  const mockMap = mode === 'mock' ? makeMockMap() : null
+  return {
+    type: 'state',
+    timestamp: Date.now(),
+    mode,
+    bridgeOnline: mode === 'mock',
+    bridgeError: null,
+    map: mockMap,
+    robots: { RMC1: robot(-2, 3), RMC2: robot(0, 0) },
+  }
+}
+
+function makeMockMap() {
+  const width = 60
+  const height = 60
+  const data = Array<number>(width * height).fill(0)
+  for (let row = 0; row < height; row += 1) {
+    for (let col = 0; col < width; col += 1) {
+      const border = row < 2 || col < 2 || row > height - 3 || col > width - 3
+      const shelf = col >= 7 && col <= 10 && row >= 8 && row <= 46
+      if (border || shelf) data[row * width + col] = 100
+    }
+  }
+  return { width, height, resolution: 0.1, origin: { x: -5.5, y: -0.5 }, data }
+}
+
+const clamp = (value: number, min: number, max: number) => Math.max(min, Math.min(max, value))
+
+export function applyMockCommand(state: FmsState, command: Command): void {
+  const rover = state.robots[command.robot]
+  if (!rover) return
+
+  if (command.type === 'emergency') {
+    rover.emergency = command.active
+    rover.velocity = { x: 0, y: 0, yaw: 0 }
+  } else if (command.type === 'stop' || command.type === 'cancel_goal') {
+    rover.velocity = { x: 0, y: 0, yaw: 0 }
+    if (command.type === 'cancel_goal') {
+      rover.goal = null
+      rover.plan = []
+    }
+  } else if (command.type === 'manual' && !rover.emergency) {
+    rover.velocity = {
+      x: clamp(command.x, -0.7, 0.7),
+      y: command.robot === 'RMC1' ? clamp(command.y, -0.7, 0.7) : 0,
+      yaw: clamp(command.yaw, -1.2, 1.2),
+    }
+  } else if (command.type === 'set_pose') {
+    rover.pose = command.pose
+    rover.trail = [{ x: command.pose.x, y: command.pose.y }]
+  } else if (command.type === 'set_goal') {
+    rover.goal = command.pose
+    rover.plan = [
+      { x: rover.pose.x, y: rover.pose.y },
+      { x: command.pose.x, y: command.pose.y },
+    ]
+  } else if (command.type === 'lift') {
+    rover.liftStatus = command.height > 0 ? 'up' : 'down'
+  } else if (command.type === 'gripper') {
+    rover.gripper = command.state
+  }
+  state.timestamp = Date.now()
+}
+
+export function tickMock(state: FmsState, dt = 0.1): void {
+  const now = Date.now()
+  for (const id of ['RMC1', 'RMC2'] as RobotId[]) {
+    const rover = state.robots[id]
+    rover.online = true
+    rover.lastMessageMs = 0
+    rover.battery = id === 'RMC1' ? 24.4 : 23.9
+    rover.pose.yaw += rover.velocity.yaw * dt
+    const c = Math.cos(rover.pose.yaw)
+    const s = Math.sin(rover.pose.yaw)
+    rover.pose.x += (rover.velocity.x * c - rover.velocity.y * s) * dt
+    rover.pose.y += (rover.velocity.x * s + rover.velocity.y * c) * dt
+    if (rover.trail.length === 0 || Math.hypot(rover.pose.x - rover.trail.at(-1)!.x, rover.pose.y - rover.trail.at(-1)!.y) > 0.03) {
+      rover.trail.push({ x: rover.pose.x, y: rover.pose.y })
+      if (rover.trail.length > 180) rover.trail.shift()
+    }
+    const points: Point[] = []
+    for (let angle = 0; angle < Math.PI * 2; angle += Math.PI / 28) {
+      const distance = 1.0 + 0.35 * Math.sin(angle * 3 + now / 1200)
+      points.push({
+        x: rover.pose.x + Math.cos(angle + rover.pose.yaw) * distance,
+        y: rover.pose.y + Math.sin(angle + rover.pose.yaw) * distance,
+      })
+    }
+    rover.lidar = points
+    if (id === 'RMC2') {
+      const row = Math.max(0, Math.min(5, Math.round(-rover.pose.x)))
+      const col = Math.max(0, Math.min(5, Math.round(rover.pose.y)))
+      rover.arucoId = String(row * 6 + col)
+    }
+  }
+  state.timestamp = now
+}
diff --git a/module4/src/App.tsx b/module4/src/App.tsx
new file mode 100644
index 0000000..949980e
--- /dev/null
+++ b/module4/src/App.tsx
@@ -0,0 +1,395 @@
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
+import type { Command, FmsState, Point, Pose, RobotId, RobotState } from './types'
+
+const WORLD = { minX: -5.5, maxX: 0.5, minY: -0.5, maxY: 5.5 }
+const SVG_SIZE = 600
+
+const emptyRobot: RobotState = {
+  online: false,
+  lastMessageMs: null,
+  pose: { x: 0, y: 0, yaw: 0 },
+  velocity: { x: 0, y: 0, yaw: 0 },
+  battery: null,
+  lidar: [],
+  trail: [],
+  plan: [],
+  goal: null,
+  emergency: false,
+  arucoId: null,
+  liftStatus: null,
+  gripper: 'unknown',
+}
+
+const initialState: FmsState = {
+  type: 'state',
+  timestamp: 0,
+  mode: 'ros',
+  bridgeOnline: false,
+  bridgeError: null,
+  map: null,
+  robots: { RMC1: emptyRobot, RMC2: emptyRobot },
+}
+
+function worldToSvg(point: Point): Point {
+  return {
+    x: ((point.y - WORLD.minY) / (WORLD.maxY - WORLD.minY)) * SVG_SIZE,
+    y: ((point.x - WORLD.minX) / (WORLD.maxX - WORLD.minX)) * SVG_SIZE,
+  }
+}
+
+function points(pointsValue: Point[]): string {
+  return pointsValue.map(worldToSvg).map((point) => `${point.x},${point.y}`).join(' ')
+}
+
+function format(value: number | null, digits = 2): string {
+  return value == null || !Number.isFinite(value) ? '—' : value.toFixed(digits)
+}
+
+function Card({ title, children, className = '' }: { title: string; children: React.ReactNode; className?: string }) {
+  return (
+    <section className={`rounded-xl border border-slate-700 bg-slate-900/80 p-4 ${className}`}>
+      <h2 className="mb-3 text-sm font-semibold uppercase tracking-wide text-slate-400">{title}</h2>
+      {children}
+    </section>
+  )
+}
+
+function NumberField({ label, value, onChange }: { label: string; value: number; onChange: (value: number) => void }) {
+  return (
+    <label className="grid gap-1 text-xs text-slate-400">
+      {label}
+      <input
+        className="w-full rounded-lg border border-slate-700 bg-slate-950 px-2 py-2 text-sm text-slate-100 outline-none focus:border-cyan-500"
+        type="number"
+        step="0.1"
+        value={value}
+        onChange={(event) => onChange(Number(event.target.value))}
+      />
+    </label>
+  )
+}
+
+function FieldMap({ state, selected }: { state: FmsState; selected: RobotId }) {
+  const occupied = useMemo(() => {
+    if (!state.map) return []
+    const result: { x: number; y: number; size: number; value: number }[] = []
+    for (let row = 0; row < state.map.height; row += 1) {
+      for (let col = 0; col < state.map.width; col += 1) {
+        const value = state.map.data[row * state.map.width + col]
+        if (value > 25) {
+          result.push({
+            x: state.map.origin.x + col * state.map.resolution,
+            y: state.map.origin.y + row * state.map.resolution,
+            size: state.map.resolution,
+            value,
+          })
+        }
+      }
+    }
+    return result.slice(0, 5000)
+  }, [state.map])
+
+  const markers = Array.from({ length: 36 }, (_, id) => ({
+    id,
+    x: -Math.floor(id / 6),
+    y: id % 6,
+  }))
+
+  return (
+    <div className="relative aspect-square min-h-[420px] overflow-hidden rounded-xl border border-slate-700 bg-slate-950">
+      <svg viewBox={`0 0 ${SVG_SIZE} ${SVG_SIZE}`} className="h-full w-full" aria-label="Карта поля и телеметрия роверов">
+        <rect width={SVG_SIZE} height={SVG_SIZE} fill="#020617" />
+        {occupied.map((cell, index) => {
+          const topLeft = worldToSvg({ x: cell.x, y: cell.y })
+          const bottomRight = worldToSvg({ x: cell.x + cell.size, y: cell.y + cell.size })
+          return (
+            <rect
+              key={`cell-${index}`}
+              x={Math.min(topLeft.x, bottomRight.x)}
+              y={Math.min(topLeft.y, bottomRight.y)}
+              width={Math.max(1, Math.abs(bottomRight.x - topLeft.x))}
+              height={Math.max(1, Math.abs(bottomRight.y - topLeft.y))}
+              fill={cell.value > 65 ? '#334155' : '#1e293b'}
+              opacity="0.7"
+            />
+          )
+        })}
+
+        {Array.from({ length: 6 }, (_, row) => Array.from({ length: 6 }, (_, col) => {
+          const here = worldToSvg({ x: -row, y: col })
+          const right = col < 5 ? worldToSvg({ x: -row, y: col + 1 }) : null
+          const down = row < 5 ? worldToSvg({ x: -(row + 1), y: col }) : null
+          return (
+            <g key={`edges-${row}-${col}`} stroke="#1e3a5f" strokeWidth="2">
+              {right && <line x1={here.x} y1={here.y} x2={right.x} y2={right.y} />}
+              {down && <line x1={here.x} y1={here.y} x2={down.x} y2={down.y} />}
+            </g>
+          )
+        }))}
+
+        {(['RMC1', 'RMC2'] as RobotId[]).map((id) => {
+          const rover = state.robots[id]
+          const color = id === 'RMC1' ? '#22d3ee' : '#f59e0b'
+          const center = worldToSvg(rover.pose)
+          const direction = rover.pose.yaw - Math.PI / 2
+          return (
+            <g key={id} opacity={id === selected ? 1 : 0.55}>
+              {rover.trail.length > 1 && <polyline points={points(rover.trail)} fill="none" stroke={color} strokeWidth="3" opacity="0.45" />}
+              {rover.plan.length > 1 && <polyline points={points(rover.plan)} fill="none" stroke="#a78bfa" strokeWidth="4" strokeDasharray="10 7" />}
+              {rover.lidar.map((point, index) => {
+                const p = worldToSvg(point)
+                return <circle key={`${id}-lidar-${index}`} cx={p.x} cy={p.y} r="2.2" fill={color} opacity="0.55" />
+              })}
+              {rover.goal && (() => {
+                const goal = worldToSvg(rover.goal)
+                return <g><circle cx={goal.x} cy={goal.y} r="12" fill="none" stroke="#a78bfa" strokeWidth="3" /><line x1={goal.x - 16} y1={goal.y} x2={goal.x + 16} y2={goal.y} stroke="#a78bfa" /><line x1={goal.x} y1={goal.y - 16} x2={goal.x} y2={goal.y + 16} stroke="#a78bfa" /></g>
+              })()}
+              <g transform={`translate(${center.x} ${center.y}) rotate(${direction * 180 / Math.PI})`}>
+                <circle r={id === selected ? 18 : 14} fill={color} stroke="#f8fafc" strokeWidth={id === selected ? 3 : 1} />
+                <path d="M 0 -25 L -7 -10 L 7 -10 Z" fill="#f8fafc" />
+              </g>
+              <text x={center.x + 21} y={center.y - 18} fill={color} fontSize="14" fontWeight="700">{id}</text>
+            </g>
+          )
+        })}
+
+        {markers.map((marker) => {
+          const point = worldToSvg(marker)
+          const current = state.robots.RMC2.arucoId === String(marker.id)
+          return (
+            <g key={marker.id}>
+              <rect x={point.x - 11} y={point.y - 11} width="22" height="22" rx="4" fill={current ? '#f59e0b' : '#0f172a'} stroke={current ? '#fbbf24' : '#475569'} strokeWidth="2" />
+              <text x={point.x} y={point.y + 4} textAnchor="middle" fill="#f8fafc" fontSize="10">{marker.id}</text>
+            </g>
+          )
+        })}
+      </svg>
+      <div className="absolute left-3 top-3 rounded-lg bg-slate-950/80 px-3 py-2 text-xs text-slate-300 backdrop-blur">
+        ArUco: шаг 1 м · X вниз · Y вправо
+      </div>
+      <div className="absolute bottom-3 right-3 flex gap-3 rounded-lg bg-slate-950/80 px-3 py-2 text-xs backdrop-blur">
+        <span className="text-cyan-300">● RMC1</span><span className="text-amber-300">● RMC2</span><span className="text-violet-300">-- маршрут</span>
+      </div>
+    </div>
+  )
+}
+
+function ManualControls({ robot, emergency, send }: { robot: RobotId; emergency: boolean; send: (command: Command) => void }) {
+  const timer = useRef<ReturnType<typeof setInterval> | null>(null)
+
+  const stop = useCallback(() => {
+    if (timer.current) clearInterval(timer.current)
+    timer.current = null
+    send({ type: 'stop', robot })
+  }, [robot, send])
+
+  const start = (x: number, y: number, yaw: number) => {
+    if (emergency) return
+    if (timer.current) clearInterval(timer.current)
+    const command: Command = { type: 'manual', robot, x, y, yaw }
+    send(command)
+    timer.current = setInterval(() => send(command), 120)
+  }
+
+  useEffect(() => stop, [stop])
+
+  const button = 'select-none rounded-lg border border-slate-600 bg-slate-800 px-3 py-3 font-semibold text-slate-100 hover:bg-slate-700 active:bg-cyan-700 disabled:cursor-not-allowed disabled:opacity-40'
+  const handlers = (x: number, y: number, yaw: number) => ({
+    onPointerDown: (event: React.PointerEvent<HTMLButtonElement>) => {
+      event.currentTarget.setPointerCapture(event.pointerId)
+      start(x, y, yaw)
+    },
+    onPointerUp: stop,
+    onPointerCancel: stop,
+  })
+
+  return (
+    <div className="grid grid-cols-3 gap-2">
+      <button className={button} disabled={robot === 'RMC2' || emergency} {...handlers(0, 0.35, 0)}>↖ бок</button>
+      <button className={button} disabled={emergency} {...handlers(0.45, 0, 0)}>↑ W</button>
+      <button className={button} disabled={robot === 'RMC2' || emergency} {...handlers(0, -0.35, 0)}>бок ↗</button>
+      <button className={button} disabled={emergency} {...handlers(0, 0, 0.75)}>↶ A</button>
+      <button className={`${button} border-red-700 bg-red-950 text-red-200`} onClick={stop}>STOP</button>
+      <button className={button} disabled={emergency} {...handlers(0, 0, -0.75)}>D ↷</button>
+      <button className={button} disabled={robot === 'RMC2' || emergency} {...handlers(0, -0.35, 0)}>↙ бок</button>
+      <button className={button} disabled={emergency} {...handlers(-0.45, 0, 0)}>↓ S</button>
+      <button className={button} disabled={robot === 'RMC2' || emergency} {...handlers(0, 0.35, 0)}>бок ↘</button>
+    </div>
+  )
+}
+
+export default function App() {
+  const [state, setState] = useState<FmsState>(initialState)
+  const [selected, setSelected] = useState<RobotId>('RMC1')
+  const [socketOnline, setSocketOnline] = useState(false)
+  const [message, setMessage] = useState('Подключение…')
+  const [poseForm, setPoseForm] = useState<Pose>({ x: 0, y: 0, yaw: 0 })
+  const [goalForm, setGoalForm] = useState<Pose>({ x: -2, y: 3, yaw: 0 })
+
+  const send = useCallback(async (command: Command) => {
+    try {
+      const response = await fetch('/api/command', {
+        method: 'POST',
+        headers: { 'content-type': 'application/json' },
+        body: JSON.stringify(command),
+      })
+      const result = await response.json() as { ok: boolean; error?: string }
+      setMessage(result.ok ? `Команда: ${command.type}` : `Ошибка: ${result.error}`)
+    } catch (error) {
+      setMessage(`API недоступен: ${String(error)}`)
+    }
+  }, [])
+
+  useEffect(() => {
+    let socket: WebSocket | null = null
+    let retry: ReturnType<typeof setTimeout>
+    let disposed = false
+    const connect = () => {
+      const protocol = location.protocol === 'https:' ? 'wss:' : 'ws:'
+      socket = new WebSocket(`${protocol}//${location.host}/ws`)
+      socket.onopen = () => { setSocketOnline(true); setMessage('Телеметрия подключена') }
+      socket.onmessage = (event) => {
+        try {
+          const data = JSON.parse(event.data) as FmsState
+          if (data.type === 'state') setState(data)
+        } catch { /* ignore malformed packet */ }
+      }
+      socket.onclose = () => {
+        setSocketOnline(false)
+        if (!disposed) retry = setTimeout(connect, 1200)
+      }
+    }
+    connect()
+    return () => { disposed = true; clearTimeout(retry); socket?.close() }
+  }, [])
+
+  useEffect(() => {
+    const pressed = new Set<string>()
+    const movement = () => {
+      let x = 0, y = 0, yaw = 0
+      if (pressed.has('w')) x += 0.45
+      if (pressed.has('s')) x -= 0.45
+      if (pressed.has('a')) yaw += 0.75
+      if (pressed.has('d')) yaw -= 0.75
+      if (selected === 'RMC1' && pressed.has('q')) y += 0.35
+      if (selected === 'RMC1' && pressed.has('e')) y -= 0.35
+      if (x || y || yaw) send({ type: 'manual', robot: selected, x, y, yaw })
+      else send({ type: 'stop', robot: selected })
+    }
+    const down = (event: KeyboardEvent) => {
+      if ((event.target as HTMLElement).tagName === 'INPUT') return
+      const key = event.key.toLowerCase()
+      if (!['w', 'a', 's', 'd', 'q', 'e'].includes(key)) return
+      event.preventDefault()
+      pressed.add(key)
+      movement()
+    }
+    const up = (event: KeyboardEvent) => {
+      const key = event.key.toLowerCase()
+      if (!pressed.delete(key)) return
+      movement()
+    }
+    const blur = () => { pressed.clear(); movement() }
+    const repeat = setInterval(() => { if (pressed.size) movement() }, 120)
+    window.addEventListener('keydown', down)
+    window.addEventListener('keyup', up)
+    window.addEventListener('blur', blur)
+    return () => {
+      clearInterval(repeat)
+      window.removeEventListener('keydown', down)
+      window.removeEventListener('keyup', up)
+      window.removeEventListener('blur', blur)
+    }
+  }, [selected, send])
+
+  const rover = state.robots[selected]
+  const fresh = Date.now() - state.timestamp < 1500
+  const setForm = (setter: React.Dispatch<React.SetStateAction<Pose>>, key: keyof Pose, value: number) => setter((current) => ({ ...current, [key]: value }))
+
+  return (
+    <main className="min-h-screen bg-slate-950 p-3 text-slate-100 lg:p-5">
+      <header className="mx-auto mb-4 flex max-w-[1600px] flex-wrap items-center justify-between gap-3">
+        <div><h1 className="text-xl font-bold">MVCH FMS · модуль Г</h1><p className="text-sm text-slate-400">Управление, навигация и телеметрия RMC1 / RMC2</p></div>
+        <div className="flex flex-wrap items-center gap-2 text-xs">
+          <span className={`rounded-full px-3 py-1.5 ${socketOnline && fresh ? 'bg-emerald-950 text-emerald-300' : 'bg-red-950 text-red-300'}`}>WebSocket: {socketOnline && fresh ? 'online' : 'offline'}</span>
+          <span className={`rounded-full px-3 py-1.5 ${state.bridgeOnline ? 'bg-emerald-950 text-emerald-300' : 'bg-amber-950 text-amber-300'}`}>Bridge: {state.bridgeOnline ? state.mode : 'offline'}</span>
+          <span className="max-w-sm truncate rounded-full bg-slate-800 px-3 py-1.5 text-slate-300">{state.bridgeError ?? message}</span>
+        </div>
+      </header>
+
+      <div className="mx-auto grid max-w-[1600px] gap-4 xl:grid-cols-[minmax(600px,1fr)_420px]">
+        <div className="grid gap-4">
+          <div className="flex gap-2">
+            {(['RMC1', 'RMC2'] as RobotId[]).map((id) => (
+              <button key={id} onClick={() => { setSelected(id); setPoseForm(state.robots[id].pose) }} className={`flex-1 rounded-xl border px-4 py-3 text-left ${selected === id ? 'border-cyan-500 bg-cyan-950/60' : 'border-slate-700 bg-slate-900'}`}>
+                <span className="font-bold">{id}</span>
+                <span className={`ml-3 text-xs ${state.robots[id].online ? 'text-emerald-400' : 'text-red-400'}`}>{state.robots[id].online ? 'ROS online' : 'нет данных'}</span>
+              </button>
+            ))}
+          </div>
+          <FieldMap state={state} selected={selected} />
+          <Card title="Состояние двух роверов">
+            <div className="grid grid-cols-2 gap-3 text-sm lg:grid-cols-4">
+              {(['RMC1', 'RMC2'] as RobotId[]).map((id) => <div key={id} className="rounded-lg bg-slate-950 p-3"><strong>{id}</strong><div className="mt-1 text-slate-400">x {format(state.robots[id].pose.x)} · y {format(state.robots[id].pose.y)}</div><div className="text-slate-400">yaw {format(state.robots[id].pose.yaw)} rad</div></div>)}
+              <div className="rounded-lg bg-slate-950 p-3"><strong>Карта</strong><div className="mt-1 text-slate-400">{state.map ? `${state.map.width} × ${state.map.height}` : 'нет /map'}</div></div>
+              <div className="rounded-lg bg-slate-950 p-3"><strong>Обновление</strong><div className="mt-1 text-slate-400">{state.timestamp ? new Date(state.timestamp).toLocaleTimeString() : '—'}</div></div>
+            </div>
+          </Card>
+        </div>
+
+        <aside className="grid content-start gap-4">
+          <Card title={`Ручное управление ${selected}`}>
+            <ManualControls robot={selected} emergency={rover.emergency} send={send} />
+            <p className="mt-2 text-xs text-slate-500">Клавиши: W/S — ход, A/D — поворот, Q/E — боковой ход RMC1. При отпускании отправляется STOP.</p>
+          </Card>
+
+          <button onClick={() => send({ type: 'emergency', robot: selected, active: !rover.emergency })} className={`rounded-xl border-2 px-5 py-5 text-lg font-black tracking-wide ${rover.emergency ? 'border-emerald-500 bg-emerald-950 text-emerald-300' : 'border-red-500 bg-red-950 text-red-200'}`}>
+            {rover.emergency ? 'СНЯТЬ АВАРИЙНЫЙ СТОП' : 'АВАРИЙНЫЙ СТОП'}
+          </button>
+
+          <Card title="Телеметрия">
+            <dl className="grid grid-cols-2 gap-x-4 gap-y-2 text-sm">
+              <dt className="text-slate-400">Позиция</dt><dd>x {format(rover.pose.x)} · y {format(rover.pose.y)}</dd>
+              <dt className="text-slate-400">Ориентация</dt><dd>{format(rover.pose.yaw)} rad</dd>
+              <dt className="text-slate-400">Скорость</dt><dd>{format(rover.velocity.x)} м/с</dd>
+              <dt className="text-slate-400">Лидар</dt><dd>{rover.lidar.length} точек</dd>
+              <dt className="text-slate-400">Аккумулятор</dt><dd>{rover.battery == null ? 'нет топика' : `${format(rover.battery)} В`}</dd>
+              <dt className="text-slate-400">ArUco</dt><dd>{rover.arucoId ?? '—'}</dd>
+              <dt className="text-slate-400">Инструмент</dt><dd>{selected === 'RMC1' ? rover.gripper : (rover.liftStatus ?? '—')}</dd>
+              <dt className="text-slate-400">Возраст данных</dt><dd>{rover.lastMessageMs == null ? '—' : `${rover.lastMessageMs} мс`}</dd>
+            </dl>
+          </Card>
+
+          <Card title="Установить текущее положение">
+            <div className="grid grid-cols-3 gap-2">
+              <NumberField label="X, м" value={poseForm.x} onChange={(value) => setForm(setPoseForm, 'x', value)} />
+              <NumberField label="Y, м" value={poseForm.y} onChange={(value) => setForm(setPoseForm, 'y', value)} />
+              <NumberField label="Yaw, рад" value={poseForm.yaw} onChange={(value) => setForm(setPoseForm, 'yaw', value)} />
+            </div>
+            <button onClick={() => send({ type: 'set_pose', robot: selected, pose: poseForm })} className="mt-3 w-full rounded-lg bg-slate-700 px-4 py-2 font-semibold hover:bg-slate-600">Применить без движения</button>
+          </Card>
+
+          <Card title="Автономная цель Nav2">
+            <div className="grid grid-cols-3 gap-2">
+              <NumberField label="X, м" value={goalForm.x} onChange={(value) => setForm(setGoalForm, 'x', value)} />
+              <NumberField label="Y, м" value={goalForm.y} onChange={(value) => setForm(setGoalForm, 'y', value)} />
+              <NumberField label="Yaw, рад" value={goalForm.yaw} onChange={(value) => setForm(setGoalForm, 'yaw', value)} />
+            </div>
+            <div className="mt-3 grid grid-cols-2 gap-2">
+              <button disabled={rover.emergency} onClick={() => send({ type: 'set_goal', robot: selected, pose: goalForm })} className="rounded-lg bg-violet-700 px-3 py-2 font-semibold hover:bg-violet-600 disabled:opacity-40">Ехать к точке</button>
+              <button onClick={() => send({ type: 'cancel_goal', robot: selected })} className="rounded-lg bg-slate-700 px-3 py-2 font-semibold hover:bg-slate-600">Отменить</button>
+            </div>
+          </Card>
+
+          <Card title="Рабочий инструмент">
+            {selected === 'RMC1' ? (
+              <div className="grid grid-cols-2 gap-2"><button disabled={rover.emergency} onClick={() => send({ type: 'gripper', robot: 'RMC1', state: 'open' })} className="rounded-lg bg-cyan-800 px-3 py-2 disabled:opacity-40">Открыть схват</button><button disabled={rover.emergency} onClick={() => send({ type: 'gripper', robot: 'RMC1', state: 'closed' })} className="rounded-lg bg-cyan-800 px-3 py-2 disabled:opacity-40">Закрыть схват</button></div>
+            ) : (
+              <div className="grid grid-cols-2 gap-2"><button disabled={rover.emergency} onClick={() => send({ type: 'lift', robot: 'RMC2', height: 0.1 })} className="rounded-lg bg-amber-800 px-3 py-2 disabled:opacity-40">Поднять лифт</button><button disabled={rover.emergency} onClick={() => send({ type: 'lift', robot: 'RMC2', height: 0 })} className="rounded-lg bg-amber-800 px-3 py-2 disabled:opacity-40">Опустить лифт</button></div>
+            )}
+          </Card>
+        </aside>
+      </div>
+    </main>
+  )
+}
diff --git a/module4/src/index.css b/module4/src/index.css
new file mode 100644
index 0000000..02de586
--- /dev/null
+++ b/module4/src/index.css
@@ -0,0 +1,12 @@
+@import "tailwindcss";
+
+:root {
+  color: #e2e8f0;
+  background: #020617;
+  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+}
+
+button, input { font: inherit; }
+button { touch-action: manipulation; }
diff --git a/module4/src/main.tsx b/module4/src/main.tsx
new file mode 100644
index 0000000..db032b7
--- /dev/null
+++ b/module4/src/main.tsx
@@ -0,0 +1,10 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import './index.css'
+import App from './App'
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+)
diff --git a/module4/src/types.ts b/module4/src/types.ts
new file mode 100644
index 0000000..0e08e90
--- /dev/null
+++ b/module4/src/types.ts
@@ -0,0 +1,48 @@
+export type RobotId = 'RMC1' | 'RMC2'
+
+export type Point = { x: number; y: number }
+export type Pose = Point & { yaw: number }
+
+export type RobotState = {
+  online: boolean
+  lastMessageMs: number | null
+  pose: Pose
+  velocity: { x: number; y: number; yaw: number }
+  battery: number | null
+  lidar: Point[]
+  trail: Point[]
+  plan: Point[]
+  goal: Pose | null
+  emergency: boolean
+  arucoId: string | null
+  liftStatus: string | null
+  gripper: 'open' | 'closed' | 'unknown'
+}
+
+export type MapState = {
+  width: number
+  height: number
+  resolution: number
+  origin: Point
+  data: number[]
+}
+
+export type FmsState = {
+  type: 'state'
+  timestamp: number
+  mode: 'ros' | 'mock'
+  bridgeOnline: boolean
+  bridgeError: string | null
+  map: MapState | null
+  robots: Record<RobotId, RobotState>
+}
+
+export type Command =
+  | { type: 'manual'; robot: RobotId; x: number; y: number; yaw: number }
+  | { type: 'stop'; robot: RobotId }
+  | { type: 'emergency'; robot: RobotId; active: boolean }
+  | { type: 'set_pose'; robot: RobotId; pose: Pose }
+  | { type: 'set_goal'; robot: RobotId; pose: Pose }
+  | { type: 'cancel_goal'; robot: RobotId }
+  | { type: 'lift'; robot: 'RMC2'; height: 0 | 0.1 }
+  | { type: 'gripper'; robot: 'RMC1'; state: 'open' | 'closed' }
diff --git a/module4/tsconfig.app.json b/module4/tsconfig.app.json
new file mode 100644
index 0000000..e935337
--- /dev/null
+++ b/module4/tsconfig.app.json
@@ -0,0 +1,20 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "useDefineForClassFields": true,
+    "lib": ["ES2022", "DOM", "DOM.Iterable"],
+    "allowJs": false,
+    "skipLibCheck": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "module": "ESNext",
+    "moduleResolution": "Bundler",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react-jsx"
+  },
+  "include": ["src"]
+}
diff --git a/module4/tsconfig.json b/module4/tsconfig.json
new file mode 100644
index 0000000..1ffef60
--- /dev/null
+++ b/module4/tsconfig.json
@@ -0,0 +1,7 @@
+{
+  "files": [],
+  "references": [
+    { "path": "./tsconfig.app.json" },
+    { "path": "./tsconfig.node.json" }
+  ]
+}
diff --git a/module4/tsconfig.node.json b/module4/tsconfig.node.json
new file mode 100644
index 0000000..1114f5c
--- /dev/null
+++ b/module4/tsconfig.node.json
@@ -0,0 +1,15 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "lib": ["ES2022"],
+    "module": "ESNext",
+    "moduleResolution": "Bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "strict": true,
+    "skipLibCheck": true,
+    "noEmit": true,
+    "types": ["bun"]
+  },
+  "include": ["vite.config.ts", "server", "scripts"]
+}
diff --git a/module4/vite.config.ts b/module4/vite.config.ts
new file mode 100644
index 0000000..7a4fbe7
--- /dev/null
+++ b/module4/vite.config.ts
@@ -0,0 +1,15 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react-swc'
+import tailwindcss from '@tailwindcss/vite'
+
+export default defineConfig({
+  plugins: [react(), tailwindcss()],
+  server: {
+    host: '0.0.0.0',
+    port: 5173,
+    proxy: {
+      '/api': 'http://127.0.0.1:3001',
+      '/ws': { target: 'ws://127.0.0.1:3001', ws: true },
+    },
+  },
+})
diff --git a/module5/README.md b/module5/README.md
new file mode 100644
index 0000000..aa47704
--- /dev/null
+++ b/module5/README.md
@@ -0,0 +1,130 @@
+# Модуль Д — складской кейс RMC1 + RMC2
+
+Один запускаемый скрипт координирует два ровера в сценарии из конкурсного
+задания:
+
+1. RMC2 едет к стеллажу, поднимает его и отвозит в точку комплектации.
+2. RMC2 опускает стеллаж и отъезжает на соседнюю свободную точку.
+3. RMC1 подъезжает к стеллажу, YOLO находит заданную деталь, ARM95 берёт её.
+4. RMC1 отвозит деталь к полке сдачи и кладёт её.
+5. RMC2 возвращается под стеллаж и отвозит его на хранение.
+6. Оба ровера последовательно возвращаются на свои стартовые точки.
+7. В терминал и JSONL-лог выводится `MISSION_FINISHED`.
+
+Решение специально последовательное: это медленнее параллельного управления,
+зато уменьшает риск столкновения RMC1 и RMC2. Маршруты строятся BFS по графу
+ArUco 6 × 6, занятые клетки исключаются. Движение замыкается по odometry,
+`scan_front` вызывает остановку перед препятствием, команды скорости сглаживаются.
+Соседняя парковочная точка RMC2 автоматически берётся из построенного пути к
+комплектации, отдельный параметр для неё не нужен.
+
+## Учебный сценарий симулятора
+
+Дефолты образуют тренировочный сценарий на штатной геометрии `module5.launch.py`.
+Стартовые позиции, стеллаж и стол взяты из сцены; свободная точка комплектации
+выбрана нами для теста:
+
+| Объект | ArUco ID | Координата поля |
+| --- | ---: | --- |
+| старт RMC2 | 0 | `(0, 0)` |
+| старт RMC1 | 15 | `(-2, 3)` |
+| выбранный стеллаж | 34 | `(-5, 4)` |
+| комплектация | 16 | `(-2, 4)` |
+| подход RMC1 к стеллажу | 10 | `(-1, 4)` |
+| полка сдачи | 5 | `(0, 5)` |
+| подход RMC1 к полке | 4 | `(0, 4)` |
+| другие стеллажи | 31, 35 | занятые клетки |
+
+Это только удобный тренировочный пресет. На зачётной попытке ID точек сообщает
+эксперт — передайте их аргументами, не редактируя код. Подход RMC1 должен быть
+соседней свободной клеткой с рабочей стороны стеллажа/полки.
+
+## Запуск
+
+Терминал 1:
+
+```bash
+source /opt/ros/jazzy/setup.bash
+source ~/ros2_ws/install/setup.bash
+ros2 launch ar_webots_fms_ros2 module5.launch.py
+```
+
+Терминал 2. Используется уже настроенная venv модуля В с YOLO и `numpy<2`:
+
+```bash
+cd ~/scripts/mvch
+git pull --ff-only
+source /opt/ros/jazzy/setup.bash
+source ~/ros2_ws/install/setup.bash
+source module3/.venv/bin/activate
+python3 module5/module5.py --target 1
+```
+
+Перед движением программа показывает все точки и маршруты. После проверки
+нажмите Enter. Классы цели: `1=hammer`, `2=wrench`, `3=pliers`.
+
+Пример с точками эксперта:
+
+```bash
+python3 module5/module5.py --target wrench \
+  --rmc1-start 15 --rmc2-start 0 \
+  --rack 34 --assembly 16 --assembly-approach 10 \
+  --delivery 5 --delivery-approach 4 --blocked 31,35
+```
+
+Только маршруты, без ROS и движения:
+
+```bash
+python3 module5/module5.py --dry-run --target pliers
+```
+
+Тест платформ и лифта без YOLO/MoveIt:
+
+```bash
+python3 module5/module5.py --target hammer --skip-arm
+```
+
+`--auto` убирает только начальное подтверждение. На первой тренировке его не
+использовать.
+
+## Аварийная остановка
+
+В терминале скрипта доступны `stop`, `resume`, `abort`. Внешнее управление:
+
+```bash
+ros2 topic pub /mvch/module5/emergency_stop std_msgs/msg/Bool '{data: true}' --once
+ros2 topic pub /mvch/module5/emergency_stop std_msgs/msg/Bool '{data: false}' --once
+ros2 topic pub /mvch/module5/command std_msgs/msg/String '{data: abort}' --once
+```
+
+Ctrl+C и `abort` публикуют нулевую скорость обоим роверам. Штатный драйвер
+Webots не имеет аппаратного watchdog: после SIGKILL дополнительно остановите
+симуляцию вручную.
+
+## Калибровка ARM95
+
+Захват переиспользует проверенный код `module3/module3.py` и веса
+`module3/models/latest.pt`. При подходе к полке RMC1 разворачивается к её центру,
+а точка выкладки задаётся относительно `Base_link`:
+
+```text
+--drop-arm-x 0.55
+--drop-arm-y 0.0
+--drop-arm-z 0.220
+--drop-arm-yaw 1.5708
+```
+
+Эти четыре значения обязательно проверить в симуляторе и затем на реальном
+поле: геометрия полки может отличаться. Если ARM95 пока не откалиброван,
+`--skip-arm` позволяет отдельно проверить всю логистику RMC1/RMC2.
+
+## Логи и критерии
+
+Логи сохраняются в `module5/logs/module5_*.jsonl` и не попадают в Git. В них
+есть старт/конец, маршруты, достигнутые маркеры, остановки по лидару, команды
+лифта, класс/confidence YOLO и этапы манипулятора.
+
+Практически закрываются: все перемещения двух РМК, подъём/возврат стеллажа,
+захват/сдача детали, один запускаемый скрипт, безопасность, логирование, Git и
+README. Результат физического захвата, отсутствие падения детали и время до
+трёх минут подтверждаются только контрольным заездом.
diff --git a/module5/logs/.gitignore b/module5/logs/.gitignore
new file mode 100644
index 0000000..d6b7ef3
--- /dev/null
+++ b/module5/logs/.gitignore
@@ -0,0 +1,2 @@
+*
+!.gitignore
diff --git a/module5/module5.py b/module5/module5.py
new file mode 100644
index 0000000..631ee59
--- /dev/null
+++ b/module5/module5.py
@@ -0,0 +1,921 @@
+#!/usr/bin/env python3
+"""Модуль Д: один скрипт для складского кейса RMC1 + RMC2."""
+
+import argparse
+import json
+import math
+import os
+import sys
+import threading
+import time
+from collections import deque
+from dataclasses import dataclass
+from datetime import datetime
+from pathlib import Path
+from tempfile import NamedTemporaryFile
+from types import SimpleNamespace
+
+
+HERE = Path(__file__).resolve().parent
+ROOT = HERE.parent
+ROWS = 6
+COLS = 6
+MARKER_SPACING = 1.0
+ROBOT_NAMES = ("RMC1", "RMC2")
+
+
+def clamp(value, limit):
+    return max(-limit, min(limit, value))
+
+
+def wrap_angle(value):
+    return math.atan2(math.sin(value), math.cos(value))
+
+
+def marker_xy(marker_id):
+    """Координаты поля: 0=(0,0), 6=(-1,0), 1=(0,1)."""
+    row, column = divmod(marker_id, COLS)
+    return -row * MARKER_SPACING, column * MARKER_SPACING
+
+
+def neighbours(marker_id):
+    row, column = divmod(marker_id, COLS)
+    result = []
+    for dr, dc in ((-1, 0), (0, -1), (0, 1), (1, 0)):
+        nr, nc = row + dr, column + dc
+        if 0 <= nr < ROWS and 0 <= nc < COLS:
+            result.append(nr * COLS + nc)
+    return result
+
+
+def shortest_path(start, goal, blocked=()):
+    """BFS по регулярному графу ArUco."""
+    forbidden = set(blocked) - {start, goal}
+    queue = deque([start])
+    previous = {start: None}
+    while queue:
+        current = queue.popleft()
+        if current == goal:
+            break
+        for candidate in neighbours(current):
+            if candidate not in forbidden and candidate not in previous:
+                previous[candidate] = current
+                queue.append(candidate)
+    if goal not in previous:
+        raise ValueError(f"Нет маршрута {start} -> {goal}; занято: {sorted(forbidden)}")
+    route = []
+    current = goal
+    while current is not None:
+        route.append(current)
+        current = previous[current]
+    return list(reversed(route))
+
+
+def face_marker(position, target):
+    x1, y1 = marker_xy(position)
+    x2, y2 = marker_xy(target)
+    return math.atan2(y2 - y1, x2 - x1)
+
+
+def parse_markers(value):
+    if not value.strip():
+        return set()
+    try:
+        return {int(item.strip()) for item in value.split(",")}
+    except ValueError as error:
+        raise argparse.ArgumentTypeError("Нужны ID через запятую, например 31,35") from error
+
+
+class EventLog:
+    def __init__(self):
+        directory = HERE / "logs"
+        directory.mkdir(parents=True, exist_ok=True)
+        self.path = directory / f"module5_{datetime.now():%Y%m%d_%H%M%S}.jsonl"
+        self.lock = threading.Lock()
+
+    def write(self, event, **fields):
+        record = {"time": datetime.now().isoformat(timespec="milliseconds"), "event": event}
+        record.update(fields)
+        line = json.dumps(record, ensure_ascii=False)
+        with self.lock:
+            print(line, flush=True)
+            with self.path.open("a", encoding="utf-8") as stream:
+                stream.write(line + "\n")
+                stream.flush()
+                os.fsync(stream.fileno())
+
+
+@dataclass
+class Scenario:
+    rmc1_start: int
+    rmc2_start: int
+    rack: int
+    assembly: int
+    assembly_approach: int
+    delivery: int
+    delivery_approach: int
+    blocked: set
+
+    def validate(self):
+        points = {
+            "rmc1-start": self.rmc1_start,
+            "rmc2-start": self.rmc2_start,
+            "rack": self.rack,
+            "assembly": self.assembly,
+            "assembly-approach": self.assembly_approach,
+            "delivery": self.delivery,
+            "delivery-approach": self.delivery_approach,
+        }
+        for name, marker in points.items():
+            if marker not in range(ROWS * COLS):
+                raise ValueError(f"{name}: ID {marker} вне диапазона 0..35")
+        if self.assembly_approach not in neighbours(self.assembly):
+            raise ValueError("assembly-approach должен быть соседней ячейкой")
+        if self.delivery_approach not in neighbours(self.delivery):
+            raise ValueError("delivery-approach должен быть соседней ячейкой")
+        if self.assembly in self.blocked or self.rack in self.blocked:
+            raise ValueError("Активный стеллаж и точка комплектации не должны быть в --blocked")
+        if self.rack == self.assembly:
+            raise ValueError("Стеллаж и точка комплектации должны отличаться")
+
+    def routes(self):
+        # Полка сдачи и чужие стеллажи считаются препятствиями для RMC2.
+        rmc2_blocked = self.blocked | {self.delivery}
+        # Для RMC1 стеллаж уже стоит в комплектации, а полка занята физически.
+        rmc1_blocked = self.blocked | {self.assembly, self.delivery}
+        to_assembly = shortest_path(self.rack, self.assembly, rmc2_blocked)
+        parking = to_assembly[-2]
+        return {
+            "rmc2_to_rack": shortest_path(self.rmc2_start, self.rack, rmc2_blocked),
+            "rmc2_to_assembly": to_assembly,
+            "rmc2_clear_assembly": [self.assembly, parking],
+            "rmc2_back_to_assembly": [parking, self.assembly],
+            "rmc1_to_assembly": shortest_path(
+                self.rmc1_start, self.assembly_approach, rmc1_blocked
+            ),
+            "rmc1_to_delivery": shortest_path(
+                self.assembly_approach, self.delivery_approach, rmc1_blocked
+            ),
+            "rmc2_return_rack": shortest_path(self.assembly, self.rack, rmc2_blocked),
+            "rmc1_return": shortest_path(
+                self.delivery_approach, self.rmc1_start, rmc1_blocked
+            ),
+            "rmc2_return": shortest_path(self.rack, self.rmc2_start, rmc2_blocked),
+        }
+
+
+@dataclass
+class Anchor:
+    world_x: float
+    world_y: float
+    world_yaw: float
+    odom_x: float
+    odom_y: float
+    odom_yaw: float
+
+    def to_odom(self, world_x, world_y, world_yaw):
+        dx, dy = world_x - self.world_x, world_y - self.world_y
+        rotation = self.odom_yaw - self.world_yaw
+        cosine, sine = math.cos(rotation), math.sin(rotation)
+        return (
+            self.odom_x + cosine * dx - sine * dy,
+            self.odom_y + sine * dx + cosine * dy,
+            wrap_angle(self.odom_yaw + world_yaw - self.world_yaw),
+        )
+
+
+def arguments():
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--target", help="1/hammer, 2/wrench, 3/pliers")
+    parser.add_argument("--rmc1-start", type=int, default=15)
+    parser.add_argument("--rmc2-start", type=int, default=0)
+    parser.add_argument("--rack", type=int, default=34)
+    parser.add_argument("--assembly", type=int, default=16)
+    parser.add_argument("--assembly-approach", type=int, default=10)
+    parser.add_argument("--delivery", type=int, default=5)
+    parser.add_argument("--delivery-approach", type=int, default=4)
+    parser.add_argument("--blocked", type=parse_markers, default={31, 35})
+    parser.add_argument("--rmc1-start-yaw", type=float, default=math.pi)
+    parser.add_argument("--rmc2-start-yaw", type=float, default=math.pi)
+    parser.add_argument("--rack-yaw", type=float, default=math.pi)
+    parser.add_argument("--auto", action="store_true", help="Не ждать Enter перед стартом")
+    parser.add_argument("--dry-run", action="store_true", help="Показать сценарий без ROS")
+    parser.add_argument("--skip-arm", action="store_true", help="Только роверы и лифт")
+    parser.add_argument("--weights", default="module3/models/latest.pt")
+    parser.add_argument(
+        "--camera-topic", default="/RMC1/arm95/camera_gripper/image_color"
+    )
+    parser.add_argument("--conf", type=float, default=0.20)
+    parser.add_argument("--vision-timeout", type=float, default=60.0)
+    parser.add_argument("--plane-z", type=float, default=0.128)
+    parser.add_argument("--pick-z", type=float, default=0.210)
+    parser.add_argument("--approach-z", type=float, default=0.38)
+    parser.add_argument("--drop-arm-x", type=float, default=0.55)
+    parser.add_argument("--drop-arm-y", type=float, default=0.0)
+    parser.add_argument("--drop-arm-z", type=float, default=0.220)
+    parser.add_argument("--drop-arm-yaw", type=float, default=math.pi / 2)
+    parser.add_argument("--sensor-timeout", type=float, default=3.0)
+    parser.add_argument("--waypoint-timeout", type=float, default=35.0)
+    args = parser.parse_args()
+    if not 0.0 <= args.conf <= 1.0:
+        parser.error("--conf должен быть от 0 до 1")
+    if args.approach_z <= max(args.pick_z, args.drop_arm_z):
+        parser.error("--approach-z должен быть выше pick/drop")
+    if min(args.sensor_timeout, args.waypoint_timeout, args.vision_timeout) <= 0:
+        parser.error("таймауты должны быть положительными")
+    return args
+
+
+def make_scenario(args):
+    scenario = Scenario(
+        args.rmc1_start,
+        args.rmc2_start,
+        args.rack,
+        args.assembly,
+        args.assembly_approach,
+        args.delivery,
+        args.delivery_approach,
+        set(args.blocked),
+    )
+    scenario.validate()
+    return scenario
+
+
+def print_plan(scenario, routes, target):
+    print("\n=== МОДУЛЬ Д: ПЛАН ДО ЗАПУСКА ===")
+    print(f"Целевая деталь: {target}")
+    print(
+        f"RMC2: {scenario.rmc2_start} -> стеллаж {scenario.rack} -> "
+        f"комплектация {scenario.assembly} -> {scenario.rack} -> {scenario.rmc2_start}"
+    )
+    print(
+        f"RMC1: {scenario.rmc1_start} -> подход {scenario.assembly_approach} -> "
+        f"сдача через {scenario.delivery_approach} -> {scenario.rmc1_start}"
+    )
+    for name, route in routes.items():
+        print(f"{name}: {route}")
+    print("Приоритет: STOP -> безопасность -> точность -> скорость")
+    print("Команды: stop, resume, abort. Внешний стоп: /mvch/module5/emergency_stop")
+    print("====================================\n")
+
+
+def build_ros_node(args, event_log):
+    import rclpy
+    from geometry_msgs.msg import Twist
+    from nav_msgs.msg import Odometry
+    from rclpy.executors import MultiThreadedExecutor
+    from rclpy.node import Node
+    from rclpy.qos import qos_profile_sensor_data
+    from sensor_msgs.msg import LaserScan
+    from std_msgs.msg import Bool, Float64, String
+
+    if not rclpy.ok():
+        rclpy.init()
+
+    class WarehouseNode(Node):
+        def __init__(self):
+            super().__init__("mvch_module5")
+            self.lock = threading.Lock()
+            self.poses = {name: None for name in ROBOT_NAMES}
+            self.odom_seen = {name: 0.0 for name in ROBOT_NAMES}
+            self.front_distance = {name: math.inf for name in ROBOT_NAMES}
+            self.scan_seen = {name: 0.0 for name in ROBOT_NAMES}
+            self.last_command = {name: (0.0, 0.0, 0.0, time.monotonic()) for name in ROBOT_NAMES}
+            self.emergency = threading.Event()
+            self.abort = threading.Event()
+            self.lift_status = "unknown"
+            self.lift_updates = 0
+            self.cmd_publishers = {
+                name: self.create_publisher(Twist, f"/{name}/cmd_vel", 10)
+                for name in ROBOT_NAMES
+            }
+            self.lift_publisher = self.create_publisher(Float64, "/RMC2/lift", 10)
+            for name in ROBOT_NAMES:
+                self.create_subscription(
+                    Odometry,
+                    f"/{name}/odometry",
+                    lambda message, robot=name: self.on_odom(robot, message),
+                    qos_profile_sensor_data,
+                )
+                self.create_subscription(
+                    LaserScan,
+                    f"/{name}/scan_front",
+                    lambda message, robot=name: self.on_scan(robot, message),
+                    qos_profile_sensor_data,
+                )
+            self.create_subscription(String, "/RMC2/lift_status", self.on_lift, 10)
+            self.create_subscription(Bool, "/mvch/module5/emergency_stop", self.on_stop, 10)
+            self.create_subscription(String, "/mvch/module5/command", self.on_command, 10)
+
+        def on_odom(self, robot, message):
+            orientation = message.pose.pose.orientation
+            siny = 2.0 * (orientation.w * orientation.z + orientation.x * orientation.y)
+            cosy = 1.0 - 2.0 * (orientation.y**2 + orientation.z**2)
+            pose = (
+                float(message.pose.pose.position.x),
+                float(message.pose.pose.position.y),
+                math.atan2(siny, cosy),
+            )
+            with self.lock:
+                self.poses[robot] = pose
+                self.odom_seen[robot] = time.monotonic()
+
+        def on_scan(self, robot, message):
+            distances = []
+            for index, distance in enumerate(message.ranges):
+                angle = message.angle_min + index * message.angle_increment
+                if abs(angle) <= math.radians(24) and math.isfinite(distance):
+                    if message.range_min <= distance <= message.range_max:
+                        distances.append(float(distance))
+            with self.lock:
+                self.front_distance[robot] = min(distances, default=math.inf)
+                self.scan_seen[robot] = time.monotonic()
+
+        def on_lift(self, message):
+            with self.lock:
+                self.lift_status = str(message.data)
+                self.lift_updates += 1
+
+        def on_stop(self, message):
+            if message.data:
+                self.emergency.set()
+                event_log.write("EMERGENCY_STOP", source="topic")
+            else:
+                self.emergency.clear()
+                event_log.write("RESUME", source="topic")
+
+        def on_command(self, message):
+            command = message.data.strip().lower()
+            if command == "stop":
+                self.emergency.set()
+                event_log.write("EMERGENCY_STOP", source="command")
+            elif command == "resume":
+                self.emergency.clear()
+                event_log.write("RESUME", source="command")
+            elif command in {"abort", "quit"}:
+                self.abort.set()
+
+        def pose(self, robot):
+            with self.lock:
+                return self.poses[robot], self.odom_seen[robot]
+
+        def scan(self, robot):
+            with self.lock:
+                return self.front_distance[robot], self.scan_seen[robot]
+
+        def command(self, robot, x=0.0, y=0.0, yaw=0.0, immediate=False):
+            now = time.monotonic()
+            old_x, old_y, old_yaw, old_time = self.last_command[robot]
+            if immediate:
+                next_x, next_y, next_yaw = x, y, yaw
+            else:
+                dt = min(0.15, max(0.02, now - old_time))
+                linear_step, angular_step = 0.65 * dt, 1.2 * dt
+                next_x = old_x + clamp(x - old_x, linear_step)
+                next_y = old_y + clamp(y - old_y, linear_step)
+                next_yaw = old_yaw + clamp(yaw - old_yaw, angular_step)
+            message = Twist()
+            message.linear.x = next_x
+            message.linear.y = next_y if robot == "RMC1" else 0.0
+            message.angular.z = next_yaw
+            self.cmd_publishers[robot].publish(message)
+            self.last_command[robot] = (next_x, next_y, next_yaw, now)
+
+        def stop_all(self):
+            for _ in range(3):
+                for robot in ROBOT_NAMES:
+                    self.command(robot, immediate=True)
+                time.sleep(0.04)
+
+        def set_lift(self, raised, allow_already=False):
+            height = 0.1 if raised else 0.0
+            event_log.write("LIFT_COMMAND", state="up" if raised else "down", height=height)
+            with self.lock:
+                updates_before = self.lift_updates
+            for _ in range(5):
+                self.lift_publisher.publish(Float64(data=height))
+                time.sleep(0.1)
+            started = time.monotonic()
+            success = False
+            while time.monotonic() - started < 6.0:
+                with self.lock:
+                    status = self.lift_status
+                    received_update = self.lift_updates > updates_before
+                # Драйвер публикует status только при его изменении. Если лифт уже
+                # был внизу до нашей подписки, команда down не создаст сообщения.
+                if time.monotonic() - started >= 1.1 and received_update and "success" in status.lower():
+                    success = True
+                    break
+                if time.monotonic() - started >= 1.3 and allow_already and not received_update:
+                    event_log.write(
+                        "LIFT_ALREADY_AT_TARGET",
+                        state="up" if raised else "down",
+                        status=status,
+                    )
+                    success = True
+                    break
+                time.sleep(0.1)
+            if not success:
+                raise RuntimeError(f"RMC2: лифт не завершил движение, status={status}")
+            event_log.write("LIFT_DONE", state="up" if raised else "down", status=status)
+
+    return WarehouseNode(), rclpy, MultiThreadedExecutor
+
+
+class Motion:
+    def __init__(self, node, args, event_log, anchors):
+        self.node = node
+        self.args = args
+        self.log = event_log
+        self.anchors = anchors
+
+    def wait_ready(self):
+        deadline = time.monotonic() + 20.0
+        while time.monotonic() < deadline:
+            odometry_ready = all(
+                self.node.pose(robot)[0] is not None for robot in ROBOT_NAMES
+            )
+            lidar_ready = all(self.node.scan(robot)[1] > 0.0 for robot in ROBOT_NAMES)
+            if odometry_ready and lidar_ready:
+                return
+            time.sleep(0.1)
+        missing_odom = [robot for robot in ROBOT_NAMES if self.node.pose(robot)[0] is None]
+        missing_lidar = [robot for robot in ROBOT_NAMES if self.node.scan(robot)[1] == 0.0]
+        raise RuntimeError(
+            f"Датчики не готовы; odometry={missing_odom or 'ok'}, "
+            f"scan_front={missing_lidar or 'ok'}"
+        )
+
+    def wait_if_stopped(self):
+        announced = False
+        while self.node.emergency.is_set():
+            self.node.stop_all()
+            if not announced:
+                self.log.write("PAUSED")
+                announced = True
+            if self.node.abort.is_set():
+                raise RuntimeError("Остановлено оператором")
+            time.sleep(0.1)
+
+    def drive_route(
+        self, robot, name, route, final_world_yaw, carrying=False,
+        rack_entry=False, rack_exit=False,
+    ):
+        self.log.write("ROUTE", robot=robot, stage=name, markers=route, carrying=carrying)
+        for index, marker in enumerate(route[1:], start=1):
+            x, y = marker_xy(marker)
+            if index == len(route) - 1:
+                world_yaw = final_world_yaw
+            else:
+                nx, ny = marker_xy(route[index + 1])
+                world_yaw = math.atan2(ny - y, nx - x)
+            target = self.anchors[robot].to_odom(x, y, world_yaw)
+            self.drive_to(
+                robot,
+                marker,
+                target,
+                carrying=carrying,
+                allow_rack_entry=(rack_entry and index == len(route) - 1)
+                or (rack_exit and index == 1),
+            )
+        self.log.write("ROUTE_DONE", robot=robot, stage=name, marker=route[-1])
+
+    def drive_to(self, robot, marker, target, carrying=False, allow_rack_entry=False):
+        started = time.monotonic()
+        obstacle_since = None
+        while time.monotonic() - started < self.args.waypoint_timeout:
+            if self.node.abort.is_set():
+                raise RuntimeError("Остановлено оператором")
+            self.wait_if_stopped()
+            pose, seen = self.node.pose(robot)
+            if pose is None or time.monotonic() - seen > self.args.sensor_timeout:
+                self.node.command(robot, immediate=True)
+                raise RuntimeError(f"{robot}: потеря odometry")
+            x, y, yaw = pose
+            tx, ty, target_yaw = target
+            dx, dy = tx - x, ty - y
+            distance = math.hypot(dx, dy)
+            front, scan_seen = self.node.scan(robot)
+            fresh_scan = time.monotonic() - scan_seen <= self.args.sensor_timeout
+            stop_distance = 0.34 if robot == "RMC2" else 0.30
+            # Стеллаж имеет размер около 0.95 м и стоит центром на ArUco.
+            # На финальном въезде RMC2 штатно едет под его платформу.
+            rack_zone = allow_rack_entry and distance < 1.10
+            blocked = fresh_scan and front < stop_distance and not rack_zone
+            if blocked:
+                self.node.command(robot, immediate=True)
+                if obstacle_since is None:
+                    obstacle_since = time.monotonic()
+                    self.log.write(
+                        "OBSTACLE_STOP", robot=robot, marker=marker, distance=round(front, 3)
+                    )
+                if time.monotonic() - obstacle_since > 12.0:
+                    raise RuntimeError(f"{robot}: препятствие не освободило путь")
+                time.sleep(0.08)
+                continue
+            obstacle_since = None
+
+            yaw_error = wrap_angle(target_yaw - yaw)
+            if distance < 0.09:
+                if abs(yaw_error) < 0.10:
+                    self.node.command(robot, immediate=True)
+                    self.log.write(
+                        "WAYPOINT", robot=robot, marker=marker, error=round(distance, 3)
+                    )
+                    return
+                self.node.command(robot, yaw=clamp(yaw_error * 1.5, 0.42 if carrying else 0.55))
+                time.sleep(0.05)
+                continue
+
+            if robot == "RMC1":
+                cosine, sine = math.cos(yaw), math.sin(yaw)
+                body_x = cosine * dx + sine * dy
+                body_y = -sine * dx + cosine * dy
+                speed = 0.23 if carrying else 0.32
+                self.node.command(
+                    robot,
+                    x=clamp(body_x * 0.75, speed),
+                    y=clamp(body_y * 0.75, speed),
+                    yaw=clamp(yaw_error * 1.2, 0.40),
+                )
+            else:
+                heading_error = wrap_angle(math.atan2(dy, dx) - yaw)
+                if abs(heading_error) > 0.18:
+                    self.node.command(
+                        robot, yaw=clamp(heading_error * 1.45, 0.42 if carrying else 0.58)
+                    )
+                else:
+                    maximum = 0.18 if carrying else 0.27
+                    self.node.command(
+                        robot,
+                        x=min(maximum, max(0.07, distance * 0.55)),
+                        yaw=clamp(heading_error * 1.2, 0.30),
+                    )
+            time.sleep(0.05)
+        self.node.command(robot, immediate=True)
+        raise RuntimeError(f"{robot}: таймаут движения к marker {marker}")
+
+
+class ArmWorkflow:
+    """Тонкая обвязка проверенного зрения и MoveIt из модуля В."""
+
+    def __init__(self, args, event_log, executor, target):
+        if str(ROOT) not in sys.path:
+            sys.path.insert(0, str(ROOT))
+        try:
+            import cv2
+            import numpy as np
+            import yaml
+            from ament_index_python.packages import get_package_share_directory
+            from cv_bridge import CvBridge
+            from geometry_msgs.msg import PoseStamped
+            from moveit.planning import MoveItPy
+            from moveit_configs_utils import MoveItConfigsBuilder
+            from rclpy.duration import Duration
+            from rclpy.node import Node
+            from rclpy.qos import qos_profile_sensor_data
+            from rclpy.time import Time
+            from sensor_msgs.msg import CameraInfo, Image
+            from tf2_ros import Buffer, TransformListener
+            from tf_transformations import quaternion_from_euler
+            from ultralytics import YOLO
+            from module3.module3 import (
+                Arm,
+                build_vision_node,
+                card_near_center,
+                choose_target,
+                estimate_pose,
+                find_targets,
+            )
+        except ImportError as error:
+            raise RuntimeError(
+                f"Нет зависимости {error.name}: запустите из module3/.venv "
+                "после source ROS или используйте --skip-arm"
+            ) from error
+
+        if int(np.__version__.split(".", 1)[0]) >= 2:
+            raise RuntimeError("Для cv_bridge нужен numpy<2 в module3/.venv")
+        weights = Path(args.weights).expanduser()
+        if not weights.is_absolute():
+            weights = ROOT / weights
+        if not weights.is_file():
+            raise RuntimeError(f"Не найдены веса YOLO: {weights}")
+
+        self.args = args
+        self.log = event_log
+        self.executor = executor
+        self.target = target
+        self.cv2 = cv2
+        self.np = np
+        self.find_targets = find_targets
+        self.choose_target = choose_target
+        self.estimate_pose = estimate_pose
+        self.card_near_center = card_near_center
+        imports = (
+            Node,
+            CvBridge,
+            Image,
+            CameraInfo,
+            qos_profile_sensor_data,
+            Buffer,
+            TransformListener,
+            Duration,
+            Time,
+        )
+        self.vision = build_vision_node(SimpleNamespace(topic=args.camera_topic), imports)
+        executor.add_node(self.vision)
+        self.model = YOLO(str(weights))
+        self.log.write("VISION_READY", target=target, weights=str(weights))
+
+        package_dir = Path(get_package_share_directory("ar_webots_fms_ros2"))
+        moveit_config = (
+            MoveItConfigsBuilder("arm95")
+            .robot_description(file_path=str(package_dir / "resource/urdf/arm95_webots.urdf"))
+            .trajectory_execution(
+                file_path=str(package_dir / "resource/config/moveit_controllers.yaml")
+            )
+            .moveit_cpp(file_path=str(package_dir / "resource/config/moveit_cpp.yaml"))
+            .to_moveit_configs()
+            .to_dict()
+        )
+        moveit_config["use_sim_time"] = True
+        with NamedTemporaryFile("w", suffix=".yaml", delete=False) as stream:
+            yaml.safe_dump({"/**": {"ros__parameters": moveit_config}}, stream)
+            params_file = stream.name
+        try:
+            self.arm = Arm(
+                MoveItPy,
+                params_file,
+                PoseStamped,
+                quaternion_from_euler,
+                event_log,
+            )
+        finally:
+            Path(params_file).unlink(missing_ok=True)
+        self.log.write("MOVEIT_READY")
+
+    def detect(self):
+        started = time.monotonic()
+        last_report = 0.0
+        seen = {}
+        while time.monotonic() - started < self.args.vision_timeout:
+            frame = self.vision.latest_frame()
+            if frame is None:
+                time.sleep(0.05)
+                continue
+            result = self.model.predict(
+                source=frame,
+                conf=self.args.conf,
+                imgsz=512,
+                device="cpu",
+                verbose=False,
+            )[0]
+            if result.boxes is not None:
+                for box in result.boxes:
+                    name = str(result.names[int(box.cls.item())]).lower()
+                    seen[name] = max(seen.get(name, 0.0), float(box.conf.item()))
+            detections = self.find_targets(
+                result, frame, self.target, self.cv2, self.np
+            )
+            detection = self.choose_target(self.vision, detections, self.args.plane_z)
+            if detection is not None:
+                self.log.write(
+                    "DETECTION",
+                    target=self.target,
+                    confidence=round(detection.confidence, 4),
+                )
+                return detection
+            if time.monotonic() - last_report > 5.0:
+                self.log.write(
+                    "VISION_WAIT",
+                    target=self.target,
+                    seen={key: round(value, 3) for key, value in seen.items()},
+                )
+                last_report = time.monotonic()
+        raise RuntimeError(
+            f"Класс {self.target} не найден за {self.args.vision_timeout:.0f} с; "
+            f"видел: {seen or 'ничего'}"
+        )
+
+    def pick(self):
+        self.log.write("ARM_STAGE", stage="pick_start")
+        self.arm.open()
+        self.arm.initial("транспортировочное положение перед захватом")
+        detection = self.detect()
+        x, y, yaw = self.estimate_pose(self.vision, detection, self.args.plane_z)
+        self.log.write("PICK_TARGET", x=round(x, 4), y=round(y, 4), yaw=round(yaw, 4))
+        self.arm.pose(x, y, self.args.approach_z, yaw, "подход над деталью")
+
+        # Камера приблизилась: уточняем положение по контуру карточки.
+        time.sleep(0.6)
+        frame = self.vision.latest_frame()
+        if frame is not None:
+            try:
+                close = self.card_near_center(frame, self.target, self.cv2, self.np)
+                refined_x, refined_y, refined_yaw = self.estimate_pose(
+                    self.vision, close, self.args.plane_z
+                )
+                correction = math.hypot(refined_x - x, refined_y - y)
+                if correction <= 0.12:
+                    x, y, yaw = refined_x, refined_y, refined_yaw
+                    self.log.write("PICK_REFINED", correction=round(correction, 4))
+            except Exception as error:
+                self.log.write("PICK_REFINE_SKIPPED", reason=str(error))
+
+        self.arm.pose(x, y, self.args.approach_z, yaw, "точный подход")
+        self.arm.pose(x, y, self.args.pick_z, yaw, "опустить схват")
+        self.arm.close()
+        self.arm.pose(x, y, self.args.approach_z, yaw, "поднять деталь")
+        self.arm.initial("транспортировочное положение с деталью")
+        self.log.write("DETAIL_PICKED", target=self.target)
+
+    def place(self):
+        self.log.write("ARM_STAGE", stage="place_start")
+        x, y = self.args.drop_arm_x, self.args.drop_arm_y
+        yaw = self.args.drop_arm_yaw
+        self.arm.pose(x, y, self.args.approach_z, yaw, "подход к полке сдачи")
+        self.arm.pose(x, y, self.args.drop_arm_z, yaw, "опустить деталь на полку")
+        self.arm.open()
+        self.arm.pose(x, y, self.args.approach_z, yaw, "отойти от детали")
+        self.arm.initial("транспортировочное положение без детали")
+        self.log.write("DETAIL_PLACED", target=self.target)
+
+    def close(self):
+        try:
+            self.executor.remove_node(self.vision)
+            self.vision.destroy_node()
+        except Exception:
+            pass
+
+
+def terminal_commands(node):
+    while not node.abort.is_set():
+        try:
+            command = input().strip().lower()
+        except EOFError:
+            return
+        if command == "stop":
+            node.emergency.set()
+        elif command == "resume":
+            node.emergency.clear()
+        elif command in {"abort", "quit"}:
+            node.abort.set()
+            return
+
+
+def resolve_target(value):
+    names = {"1": "hammer", "2": "wrench", "3": "pliers"}
+    value = (value or "").strip().lower()
+    return names.get(value, value)
+
+
+def run(args):
+    target = resolve_target(args.target)
+    if not target and not args.dry_run:
+        target = resolve_target(input("Цель (1 hammer, 2 wrench, 3 pliers): "))
+    if not target:
+        target = "hammer"
+    if target not in {"hammer", "wrench", "pliers"}:
+        raise ValueError(f"Неизвестная цель: {target}")
+
+    scenario = make_scenario(args)
+    routes = scenario.routes()
+    print_plan(scenario, routes, target)
+    if args.dry_run:
+        return 0
+    if not args.auto:
+        input("Проверьте точки и маршруты. Enter — начать: ")
+
+    event_log = EventLog()
+    event_log.write("MISSION_START", target=target, log=str(event_log.path))
+    mission_started = time.monotonic()
+    node, rclpy, MultiThreadedExecutor = build_ros_node(args, event_log)
+    executor = MultiThreadedExecutor(num_threads=3)
+    executor.add_node(node)
+    spin_thread = threading.Thread(target=executor.spin, daemon=True)
+    spin_thread.start()
+    exit_code = 0
+    arm_workflow = None
+    try:
+        initial_motion = Motion(node, args, event_log, {})
+        initial_motion.wait_ready()
+        anchors = {}
+        for robot, start_marker, start_yaw in (
+            ("RMC1", scenario.rmc1_start, args.rmc1_start_yaw),
+            ("RMC2", scenario.rmc2_start, args.rmc2_start_yaw),
+        ):
+            pose, _ = node.pose(robot)
+            world_x, world_y = marker_xy(start_marker)
+            anchors[robot] = Anchor(world_x, world_y, start_yaw, *pose)
+            event_log.write("LOCALIZED", robot=robot, marker=start_marker, odom=pose)
+        motion = Motion(node, args, event_log, anchors)
+        threading.Thread(target=terminal_commands, args=(node,), daemon=True).start()
+        parking = routes["rmc2_clear_assembly"][-1]
+        assembly_entry_yaw = face_marker(parking, scenario.assembly)
+
+        node.set_lift(False, allow_already=True)
+        motion.drive_route(
+            "RMC2", "to_rack", routes["rmc2_to_rack"], args.rack_yaw, rack_entry=True
+        )
+        node.set_lift(True)
+        motion.drive_route(
+            "RMC2",
+            "rack_to_assembly",
+            routes["rmc2_to_assembly"],
+            assembly_entry_yaw,
+            carrying=True,
+            rack_exit=True,
+        )
+        node.set_lift(False)
+        motion.drive_route(
+            "RMC2",
+            "clear_assembly",
+            routes["rmc2_clear_assembly"],
+            face_marker(parking, scenario.assembly),
+            rack_exit=True,
+        )
+
+        assembly_yaw = face_marker(scenario.assembly_approach, scenario.assembly)
+        motion.drive_route(
+            "RMC1", "to_assembly", routes["rmc1_to_assembly"], assembly_yaw
+        )
+        if args.skip_arm:
+            event_log.write("ARM_SKIPPED", stage="pick", reason="--skip-arm")
+        else:
+            arm_workflow = ArmWorkflow(args, event_log, executor, target)
+            arm_workflow.pick()
+
+        delivery_yaw = face_marker(scenario.delivery_approach, scenario.delivery)
+        motion.drive_route(
+            "RMC1",
+            "to_delivery",
+            routes["rmc1_to_delivery"],
+            delivery_yaw,
+            carrying=not args.skip_arm,
+        )
+        if args.skip_arm:
+            event_log.write("ARM_SKIPPED", stage="place", reason="--skip-arm")
+        else:
+            arm_workflow.place()
+
+        motion.drive_route(
+            "RMC2",
+            "back_to_assembly",
+            routes["rmc2_back_to_assembly"],
+            assembly_entry_yaw,
+            rack_entry=True,
+        )
+        node.set_lift(True)
+        motion.drive_route(
+            "RMC2",
+            "assembly_to_rack",
+            routes["rmc2_return_rack"],
+            args.rack_yaw,
+            carrying=True,
+            rack_entry=True,
+            rack_exit=True,
+        )
+        node.set_lift(False)
+        motion.drive_route(
+            "RMC1", "return_start", routes["rmc1_return"], args.rmc1_start_yaw
+        )
+        motion.drive_route(
+            "RMC2", "return_start", routes["rmc2_return"], args.rmc2_start_yaw,
+            rack_exit=True,
+        )
+        event_log.write(
+            "MISSION_FINISHED",
+            target=target,
+            elapsed_seconds=round(time.monotonic() - mission_started, 2),
+        )
+        print("\nMISSION FINISHED: оба РМК вернулись на старт")
+    except KeyboardInterrupt:
+        event_log.write("MISSION_ABORTED", reason="Ctrl+C")
+        exit_code = 130
+    except Exception as error:
+        event_log.write("MISSION_FAILED", reason=str(error))
+        exit_code = 1
+    finally:
+        node.abort.set()
+        node.stop_all()
+        if arm_workflow is not None:
+            arm_workflow.close()
+        if not executor.shutdown(timeout_sec=2.0):
+            event_log.write("SHUTDOWN_TIMEOUT", component="ROS executor")
+        # rclpy/MoveItPy Jazzy иногда зависают или падают в C++-деструкторах.
+        # Нулевые скорости и логи уже отправлены; ОС безопасно освободит ресурсы.
+        sys.stdout.flush()
+        sys.stderr.flush()
+        os._exit(exit_code)
+    return exit_code
+
+
+def main():
+    try:
+        raise SystemExit(run(arguments()))
+    except (ValueError, ImportError) as error:
+        raise SystemExit(str(error)) from error
+
+
+if __name__ == "__main__":
+    main()
diff --git a/tools/.gitkeep b/tools/.gitkeep
new file mode 100644
index 0000000..e69de29