MQTT-FIX-T02: bound Docker logs and document production rollout

.gitignore

@@ -6,3 +6,4 @@ __pycache__/
 *.pyc
 data/
 review-notes/
+development-notes/

AGENTS.md

@@ -43,26 +43,27 @@
 - **(b) 完成整个 milestone**：仅当用户在提示词里**显式要求启用 sub-agent**时，才起 implementer / reviewer / fixer sub-agent（按下方**『默认能力档位』**选择模型，用户人工指定则覆盖），按任务依赖顺序跑完整条链。
 - **Sub-agent 纪律**：只在用户显式要求时才 spawn sub-agent；单步/小改动在主线内联完成。当前 harness 支持独立 sub-agent 时，使用其原生机制按下方**『默认能力档位』**派发；不支持时不得假装已创建 sub-agent，应明确说明限制，并仅在用户允许 fallback 时由主 agent 继续。
 
-### 默认能力档位（实现模式 sub-agent；可被人工指定覆盖）
+### 默认能力档位（编排器与实现模式 sub-agent；可被人工指定覆盖）
 
-起 implementer / reviewer / fixer sub-agent 时，**默认**按下列能力档位选择当前 harness 支持的模型，无需用户每次人工指定：
+每次开启编排模式时，**Orchestrator 使用开启时主线当前使用的模型**。起 implementer / reviewer / fixer sub-agent 时，**默认**按下列能力档位选择当前 harness 支持的模型，无需用户每次人工指定：
 
 | 角色 | 通用模型要求 | 推理档位 | Harness 示例（非强制） |
 | --- | --- | --- | --- |
-| **Implementer** | 平衡型代码实现模型 | `medium` 或等效档位 | Claude Code：Sonnet；Codex/OpenAI：GPT-5.6 Terra (`gpt-5.6-terra`) |
+| **Orchestrator**（编排器） | 每次开启编排模式时主线当前使用的模型 | 沿用主线当前设置 | 开启编排模式时的当前模型 |
-| **Fixer**（返工） | 平衡型代码实现模型 | `medium` 或等效档位 | Claude Code：Sonnet；Codex/OpenAI：GPT-5.6 Terra (`gpt-5.6-terra`) |
+| **Implementer** | 平衡型代码实现模型 | `medium` 或等效档位 | Claude Code：Sonnet；Codex/OpenAI：GPT-6.1-Luna (`gpt-6.1-luna`) |
-| **Reviewer** | 当前 harness 支持的最强通用推理 / 代码模型 | `extra-high` / `xhigh` 或等效档位 | Claude Code：Opus；Codex/OpenAI：GPT-5.6 Sol (`gpt-5.6-sol`) |
+| **Fixer**（返工） | 平衡型代码实现模型 | `medium` 或等效档位 | Claude Code：Sonnet；Codex/OpenAI：GPT-6.1-Luna (`gpt-6.1-luna`) |
+| **Reviewer** | 通用推理 / 代码评审模型 | `medium` 或等效档位 | Claude Code：Opus；Codex/OpenAI：GPT-6.1-Sol (`gpt-6.1-sol`) |
 
 - **示例非强制**：示例模型只表示当前推荐映射，不构成跨 harness 的硬性模型 ID；当前 harness 不支持时，选择最符合「通用模型要求」的可用模型。
 - **选择优先级**：用户显式指定 > 当前 harness 的原生角色配置 > 上表的 harness 示例 > 按通用模型要求自动选择。
-- **推理档位说明**：若 harness 提供独立的 reasoning-effort 设置，按上表设置；若不提供，在 spawn prompt 中明确 implementer/fixer 按平衡深度思考，reviewer 按对抗性外部审计强度复核。
+- **推理档位说明**：若 harness 提供独立的 reasoning-effort 设置，implementer / fixer / reviewer 均设为 `medium`；若不提供，在 spawn prompt 中明确按 medium 或等效的平衡深度思考，reviewer 仍须独立、对抗性复核。
 
 ### 角色（Orchestrator → Implementer → Reviewer → Fixer）
 
-- 我（主线）= **Orchestrator**：挑依赖已满足的下一个任务、派发、转述结果、维护任务 `Status`。
+- 我（主线）= **Orchestrator**（每次开启编排模式时主线当前使用的模型）：挑依赖已满足的下一个任务、派发、转述结果、维护任务 `Status`。
-- **Implementer**（平衡型代码实现模型，medium 或等效档位）：一次一个任务，严格按任务卡，不扩范围。
+- **Implementer**（默认 GPT-6.1-Luna，medium 或等效档位）：一次一个任务，严格按任务卡，不扩范围。
-- **Reviewer**（最强通用推理 / 代码模型，extra-high / xhigh 或等效档位）：实现完成后起 Reviewer sub-agent，按任务卡 `Acceptance criteria` + `Reviewer checklist` 复核、**独立重跑校验闸门**，驱动返工直到本轮 PASS。
+- **Reviewer**（默认 GPT-6.1-Sol，medium 或等效档位）：实现完成后起 Reviewer sub-agent，按任务卡 `Acceptance criteria` + `Reviewer checklist` 复核、**独立重跑校验闸门**，驱动返工直到本轮 PASS。
-- **Fixer**（平衡型代码实现模型，medium 或等效档位）：按 reviewer 的编号返工清单返工；**每轮返工起一个干净的 Fixer**（与首次实现的 Implementer 分开冷启动），先读对应 `review-notes/<task>-review-<n>.md` 再改。
+- **Fixer**（默认 GPT-6.1-Luna，medium 或等效档位）：按 reviewer 的编号返工清单返工；**每轮返工起一个干净的 Fixer**（与首次实现的 Implementer 分开冷启动），先读对应 `review-notes/<task>-review-<n>.md` 再改。
 
 #### Reviewer 盲审纪律（M1 教训）
 

README.md

@@ -345,6 +345,11 @@ CLI 工具为受控手工验证而设（设备需接市电），仅暴露读功
 - 每次轮询成功后推 state topic；连接成功或勾选变更时重发 retained discovery config
 - `POST /api/config/mqtt/test`：试连 broker 并发布一条测试消息（可用 MQTT Explorer 验证链路）
 
+主 MQTT 客户端由应用 lifespan 持有。相同配置下重复调用 connect 不会创建新客户端；Paho
+网络循环在短暂断线后负责自动重连，并在重连成功时恢复订阅。每分钟的 HA 发布任务会幂等地
+确保客户端存在。配置变更或应用关闭时，旧客户端先从管理器解绑，再断开并停止网络循环；旧
+客户端的迟到回调不会改变新连接状态或分发消息。DSMR source 使用各自独立的客户端生命周期。
+
 **Config 页配置流程**：
 1. 在 `/config` 的「MQTT」section 填写 broker host/port/username/password，启用 `MQTT_ENABLED`
 2. 点「发送测试消息」确认 broker 链路通
@@ -585,10 +590,155 @@ docker compose -f docker-compose.yml pull
 docker compose -f docker-compose.yml up -d
 ```
 
+### Docker 日志轮转与生产应用
+
+源码 Compose 为 `app` 和一次性 `migration` 服务配置 Docker `json-file` 日志轮转：单个
+日志文件最多约 10 MiB，最多保留 3 个文件。开发 override 继承这项设置。Docker 管理这些
+文件，通常位于宿主机
+`/var/lib/docker/containers/<完整容器ID>/<完整容器ID>-json.log`；路径取决于 Docker data
+root，`docker logs` / `docker compose logs` 是查看容器日志的接口。轮转会限制每个容器的
+日志保留量，较旧内容会被 Docker 轮转淘汰。不要手动删除或编辑 Docker 管理的日志文件。
+
+`docker restart` 只重启现有容器，不会更新容器创建时保存的 logging 配置；须重建容器。
+本机开发可重新执行上面的 Compose 命令。生产设备的 Compose 位于
+`/home/tianyu/.local/share/homeautomation`，与本仓库源码 Compose 分离。部署时只把两个
+服务的 `logging` 块合并到生产 Compose 对应服务中，并保留生产端已有的 `.env`、设备映射、
+`group_add`、volume、端口和其他部署设置；不要用完整源码 Compose 覆盖生产文件。
+
+要同步的配置块如下，分别放在生产文件的 `services.app` 和 `services.migration` 下：
+
+```yaml
+logging:
+  driver: json-file
+  options:
+    max-size: "10m"
+    max-file: "3"
+```
+
+生产变更只供人工维护窗口执行，需在生产目录操作。先备份生产 Compose（以及已有的环境文件），
+并且只把 `app`、`migration` 的 `logging` 块同步到生产文件；不要复制或覆盖整份生产 Compose。
+保留原有设备映射、`group_add`、volume、端口、环境变量和其他部署设置。编辑后用生产实际使用的
+Compose 文件组合及合成环境值运行 `docker compose ... config --quiet` 检查；后续所有 Compose 命令都要带上相同生产文件组合和
+`.mqtt-fix-image-pin.yml`，任何重建命令都带 `--pull never --no-build`；不要把展开后的配置
+（可能含凭据）打印或贴入报告。以下命令在生产目录执行，示例假设生产基础文件名为
+`docker-compose.yml`；若实际启动时显式使用其他 `-f` 文件，应在每条命令中原样保留该文件组合。
+
+先确定本次要走的镜像路径，并创建仅用于固定镜像的持久 override。该文件只设置两个服务的
+`image`，生产 Compose 仍负责其余设置。只应用日志配置时，不能假设本地 `latest` 标签仍指向
+正在运行的镜像：先从运行中的 app 容器读取不可变 image ID，将其记录并加上受控本地标签，
+然后固定这个标签。命令示例：
+
+```bash
+cd /home/tianyu/.local/share/homeautomation
+MQTT_FIX_BACKUP="compose.before-mqtt-fix-$(date +%Y%m%d-%H%M%S).yml"
+MQTT_FIX_ENV_BACKUP="env.before-mqtt-fix-$(date +%Y%m%d-%H%M%S).bak"
+MQTT_FIX_RECORD="mqtt-fix-maintenance-record.txt"
+MQTT_FIX_PIN_BACKUP="image-pin.before-mqtt-fix.yml"
+MQTT_FIX_APP_ID="$(docker inspect -f '{{.Image}}' home-automation-app)"
+MQTT_FIX_OLD_REPODIGESTS="$(docker image inspect -f '{{json .RepoDigests}}' "$MQTT_FIX_APP_ID")"
+printf 'previous app image ID: %s\nprevious app RepoDigests: %s\n' "$MQTT_FIX_APP_ID" "$MQTT_FIX_OLD_REPODIGESTS" | tee -a "$MQTT_FIX_RECORD"
+MQTT_FIX_APP_IMAGE="home-automation:prod-before-mqtt-fix"
+docker image tag "$MQTT_FIX_APP_ID" "$MQTT_FIX_APP_IMAGE"
+printf 'previous app local pin: %s\n' "$MQTT_FIX_APP_IMAGE" | tee -a "$MQTT_FIX_RECORD"
+cp docker-compose.yml "$MQTT_FIX_BACKUP"
+if [ -f .env ]; then cp .env "$MQTT_FIX_ENV_BACKUP"; fi
+if [ -f .mqtt-fix-image-pin.yml ]; then cp .mqtt-fix-image-pin.yml "$MQTT_FIX_PIN_BACKUP"; fi
+printf 'Compose backup: %s\n.env backup (if present): %s\nprevious image pin backup (if present): %s\n' "$MQTT_FIX_BACKUP" "$MQTT_FIX_ENV_BACKUP" "$MQTT_FIX_PIN_BACKUP" | tee -a "$MQTT_FIX_RECORD"
+cat > .mqtt-fix-image-pin.yml <<YAML
+services:
+  app:
+    image: ${MQTT_FIX_APP_IMAGE}
+  migration:
+    image: ${MQTT_FIX_APP_IMAGE}
+YAML
+```
+
+`.mqtt-fix-image-pin.yml` 保存已核验的镜像选择；不要删除它或在后续 Compose 操作中省略它。
+只有明确部署另一个已核验的镜像时才更新该文件。
+
+在编辑生产文件的 `logging` 块后，用同一镜像 pin 和合成环境变量静态检查配置，并通过显式
+override 固定镜像身份。`--env-file /dev/null` 可避免从部署 `.env` 取值；命令行变量只用于
+Compose 插值。不要输出 `config` 展开结果：
+
+```bash
+WARMTELINK_DEVICE_PATH=/dev/synthetic-device WARMTELINK_SERIAL_GID=12345 TZ=Europe/Amsterdam \
+  docker compose --env-file /dev/null -f docker-compose.yml -f .mqtt-fix-image-pin.yml config --quiet
+```
+
+若同时部署 MQTT 源码修复，须先确认修复已合入并发布。显式拉取已发布的版本 tag（不要用
+可变 `latest`），从本地镜像记录 registry digest，并在 override 中用 digest 固定目标；先核验
+该 tag/digest 对应包含修复的发布，再继续。示例中的 `<published-tag>` 应替换为已核验的版本：
+
+```bash
+MQTT_FIX_RELEASE_TAG='code.wanderingbadger.dev/tliu93/home-automation:REPLACE_WITH_VERIFIED_TAG'
+docker pull "$MQTT_FIX_RELEASE_TAG"
+MQTT_FIX_NEW_REPODIGESTS="$(docker image inspect -f '{{json .RepoDigests}}' "$MQTT_FIX_RELEASE_TAG")"
+printf 'target release tag: %s\ntarget RepoDigests: %s\n' "$MQTT_FIX_RELEASE_TAG" "$MQTT_FIX_NEW_REPODIGESTS" | tee -a "$MQTT_FIX_RECORD"
+MQTT_FIX_APP_IMAGE='code.wanderingbadger.dev/tliu93/home-automation@sha256:REPLACE_WITH_VERIFIED_DIGEST'
+cat > .mqtt-fix-image-pin.yml <<YAML
+services:
+  app:
+    image: ${MQTT_FIX_APP_IMAGE}
+  migration:
+    image: ${MQTT_FIX_APP_IMAGE}
+YAML
+printf 'selected fixed app image: %s\n' "$MQTT_FIX_APP_IMAGE" | tee -a "$MQTT_FIX_RECORD"
+```
+
+将镜像 digest 与发布记录中的目标源码提交对应关系核验后，把确认过的
+`MQTT_FIX_APP_IMAGE` 用于上述 override 和 `config --quiet` 检查。源码修复尚未发布时，
+只走前述运行中 image ID 固定路径，不执行 `docker pull`。纯应用代码修复不需要启动 migration；
+配置更新时可用 `create` 重建 migration 容器但不启动一次性迁移任务。
+
+容器必须重建才能采用新日志策略。重建 app 会造成短暂采集与 API 中断；安排维护窗口并确认
+设备采集可恢复。重建前如需留存旧 Docker 日志，可将 `docker logs --timestamps
+home-automation-app` 输出重定向到受控备份文件，并确认文件可读；此步骤只导出日志，不删除
+Docker 文件。Docker 可能在移除旧容器时一并移除其 json-file 日志，因此不要假设重建后旧
+日志仍可从新容器读取。
+
+确认配置、logging 块和固定镜像后，在生产目录应用容器配置（避免启动 migration）。每条重建
+命令都显式使用 image pin 并禁止隐式拉取，且保留生产基础 Compose 与原有部署设置：
+
+```bash
+docker compose -f docker-compose.yml -f .mqtt-fix-image-pin.yml create --pull never --no-build --force-recreate migration
+docker compose -f docker-compose.yml -f .mqtt-fix-image-pin.yml up -d --no-deps --pull never --no-build --force-recreate app
+docker inspect -f '{{.HostConfig.LogConfig.Type}} {{json .HostConfig.LogConfig.Config}}' home-automation-app
+docker inspect -f '{{.Image}}' home-automation-app
+docker compose -f docker-compose.yml -f .mqtt-fix-image-pin.yml ps
+docker compose -f docker-compose.yml -f .mqtt-fix-image-pin.yml logs --tail=100 app
+```
+
+检查 `inspect` 结果为 `json-file`、`max-size` 为 `10m`、`max-file` 为 `3`，app 为运行状态，
+近期日志无启动错误，之后确认 MQTT 与采集恢复。回退时恢复备份的生产 Compose（或恢复旧
+logging 块）。两种镜像路径都可用维护记录中的旧 app image ID 回退：确认本地旧镜像仍在后，
+将持久 pin 文件恢复为记录的旧本地 pin（或由记录的 image ID 重新打回该标签），并继续使用该文件：
+
+```bash
+docker image inspect home-automation:prod-before-mqtt-fix >/dev/null
+cat > .mqtt-fix-image-pin.yml <<'YAML'
+services:
+  app:
+    image: home-automation:prod-before-mqtt-fix
+  migration:
+    image: home-automation:prod-before-mqtt-fix
+YAML
+WARMTELINK_DEVICE_PATH=/dev/synthetic-device WARMTELINK_SERIAL_GID=12345 TZ=Europe/Amsterdam \
+  docker compose --env-file /dev/null -f docker-compose.yml -f .mqtt-fix-image-pin.yml config --quiet
+docker compose -f docker-compose.yml -f .mqtt-fix-image-pin.yml create --pull never --no-build --force-recreate migration
+docker compose -f docker-compose.yml -f .mqtt-fix-image-pin.yml up -d --no-deps --pull never --no-build --force-recreate app
+```
+
+源码更新路径也使用开头记录的旧 app image ID/pin 回退，无需依赖已变化的 `latest`。若本地
+旧 image ID 已不存在，则用维护记录中保存的旧 RepoDigest 显式拉取旧镜像，核对身份后打回原 pin
+标签，再按上面的回退步骤操作。记录本次和回退使用的 image ID/digest、固定 pin 文件内容、生产
+Compose 及 `.env` 备份文件名、logging inspect 结果及验证时间。回退同样会重建容器、造成短暂
+中断；重建前需另行导出想保留的当前容器日志。保留 `.mqtt-fix-image-pin.yml` 供后续 Compose
+操作继续使用；不要删除 Docker 日志、备份或其他生产文件。
+
 持续查看日志：
 
 ```bash
-docker compose logs -f app
+docker compose -f docker-compose.yml -f .mqtt-fix-image-pin.yml logs -f app
 ```
 
 ## Container Image CI

app/integrations/expose.py

@@ -1028,7 +1028,7 @@ def _m8_energy_provider(session: Session) -> list[ExposableEntity]:
         elif meter.commodity == "heating":
             unit, device_class = "GJ", "energy"
         else:
-            unit, device_class = "m³", "volume"
+            unit, device_class = "m³", "water"
         for suffix, getter in (
             ("total", _meter_total_getter(binding.id, source.id, channel.id)),
             ("today", _meter_today_getter(binding.id, source.id, channel.id)),
@@ -1230,7 +1230,24 @@ def _thermal_cost_getter(metric: str, window: str | None) -> Callable[[Session],
         if metric == "water_tax":
             return result["breakdown"]["hot_water_tax"]
         if metric == "hot_water_total":
-            return result["breakdown"]["hot_water_heating"] + result["breakdown"]["hot_water"]
+            # Keep the existing component entities variable-only, while making
+            # the two consumer-facing totals partition the all-in summary.
+            # Standing costs are assigned by their contractual commodity:
+            # hot-water network belongs to hot water; the remaining named
+            # standing fees belong to heating.
+            return (
+                result["breakdown"]["hot_water_heating"]
+                + result["breakdown"]["hot_water"]
+                + result["breakdown"]["hot_water_tax"]
+                + result["fixed_breakdown"]["hot_water_network"]
+            )
+        if metric == "heating":
+            return result["breakdown"]["heating"] + sum(
+                (result["fixed_breakdown"][key] for key in (
+                    "heating_network", "metering", "delivery_set", "other"
+                )),
+                0,
+            )
         return result["breakdown"][metric]
     return _getter
 

app/integrations/mqtt.py

@@ -94,6 +94,12 @@ class MqttManager:
     def __init__(self) -> None:
         self._client: mqtt.Client | None = None
         self._lock = threading.RLock()
+        # Serialize ownership changes without holding the callback lock while
+        # loop_stop() joins Paho's network thread.
+        self._lifecycle_lock = threading.Lock()
+        self._client_generation = 0
+        self._client_settings: tuple[object, ...] | None = None
+        self._client_loop_started = False
         # Source replacement/removal is serialized independently from callback
         # bookkeeping.  In particular, paho's loop_stop() joins its network
         # thread, whose callback completion also needs ``_lock``.
@@ -121,6 +127,7 @@ class MqttManager:
     @property
     def is_connected(self) -> bool:
         """True if the underlying paho client is currently connected."""
+        with self._lock:
             return self._connected
 
     # ------------------------------------------------------------------
@@ -141,15 +148,23 @@ class MqttManager:
             logger.debug("MQTT not configured or not enabled — skipping connect.")
             return
 
+        with self._lifecycle_lock:
             with self._lock:
-            self._start_client(settings)
+                if self._client is not None and self._client_settings == self._settings_key(settings):
+                    thread = getattr(self._client, "_thread", None)
+                    is_alive = getattr(thread, "is_alive", None)
+                    if thread is None and not self._client_loop_started:
+                        return
+                    if thread is not None and (not callable(is_alive) or is_alive()):
+                        return
+            self._replace_client(settings)
 
     def disconnect(self) -> None:
         """Disconnect from the broker and stop the background loop thread.
 
         No-op if no client is active.
         """
-        with self._lock:
+        with self._lifecycle_lock:
             self._stop_client()
             with self._source_lifecycle_lock:
                 with self._lock:
@@ -163,9 +178,23 @@ class MqttManager:
         Call this after saving updated MQTT configuration values.
         No-op if MQTT is not enabled or broker host is not set.
         """
-        with self._lock:
+        if not _is_configured(settings):
+            # A configuration update only owns the application-wide client.
+            # DSMR sources have independent settings and lifecycle; only app
+            # shutdown via disconnect() is allowed to stop them all.
+            with self._lifecycle_lock:
                 self._stop_client()
-        self.connect(settings)
+            return
+        with self._lifecycle_lock:
+            with self._lock:
+                if self._client is not None and self._client_settings == self._settings_key(settings):
+                    thread = getattr(self._client, "_thread", None)
+                    is_alive = getattr(thread, "is_alive", None)
+                    if thread is None and not self._client_loop_started:
+                        return
+                    if thread is not None and (not callable(is_alive) or is_alive()):
+                        return
+            self._replace_client(settings)
 
     def publish(
         self,
@@ -183,8 +212,9 @@ class MqttManager:
         """
         with self._lock:
             client = self._client
+            connected = self._connected
 
-        if client is None or not self._connected:
+        if client is None or not connected:
             logger.debug("MQTT publish skipped — not connected (topic=%s).", topic)
             return False
 
@@ -212,6 +242,7 @@ class MqttManager:
         Handler exceptions are swallowed by the ``on_message`` dispatcher so
         that a buggy handler can never crash the paho loop thread.
         """
+        with self._lock:
             self._subscriptions[topic] = handler
         # Grab the client reference outside the lock to avoid holding the lock
         # while calling back into paho (which may itself acquire internal locks).
@@ -235,8 +266,8 @@ class MqttManager:
         immediately; either way the handler is removed from the registry so it
         will not be re-subscribed on the next ``_on_connect``.
         """
-        self._subscriptions.pop(topic, None)
         with self._lock:
+            self._subscriptions.pop(topic, None)
             client = self._client
             connected = self._connected
 
@@ -388,12 +419,35 @@ class MqttManager:
     # Internal helpers
     # ------------------------------------------------------------------
 
+    @staticmethod
+    def _settings_key(settings: Settings) -> tuple[object, ...]:
+        return (
+            settings.mqtt_enabled,
+            settings.mqtt_broker_host,
+            settings.mqtt_broker_port,
+            settings.mqtt_username,
+            settings.mqtt_password,
+            settings.mqtt_tls_enabled,
+            settings.mqtt_client_id,
+        )
+
+    def _replace_client(self, settings: Settings) -> None:
+        self._stop_client()
+        self._start_client(settings)
+
     def _start_client(self, settings: Settings) -> None:
-        """Build a fresh paho Client, configure it, and call loop_start + connect."""
+        """Install one generation before starting Paho's reconnecting loop."""
+        with self._lock:
+            self._client_generation += 1
+            generation = self._client_generation
+        try:
             client = mqtt.Client(
                 callback_api_version=mqtt.CallbackAPIVersion.VERSION2,
                 client_id=settings.mqtt_client_id,
             )
+        except Exception:
+            logger.exception("MQTT client initialization failed.")
+            return
 
         # Callbacks — VERSION2 on_connect signature:
         # (client, userdata, connect_flags, reason_code, properties)
@@ -404,21 +458,21 @@ class MqttManager:
             reason_code: mqtt.ReasonCode,
             _properties: mqtt.Properties | None,
         ) -> None:
+            with self._lock:
+                if self._client is not _client or self._client_generation != generation:
+                    return
                 if reason_code.is_failure:
-                logger.warning("MQTT connection refused: %s", reason_code)
                     self._connected = False
-            else:
+                    logger.warning("MQTT connection refused: %s", reason_code)
-                logger.info("MQTT connected (reason_code=%s).", reason_code)
+                    return
                 self._connected = True
-                # Re-establish all registered subscriptions after (re-)connect.
+                topics = tuple(self._subscriptions)
-                for sub_topic in self._subscriptions:
+            logger.info("MQTT connected (reason_code=%s).", reason_code)
+            for sub_topic in topics:
                 try:
                     _client.subscribe(sub_topic)
-                        logger.debug("MQTT re-subscribed to topic=%s.", sub_topic)
                 except Exception:
-                        logger.exception(
+                    logger.exception("MQTT re-subscribe failed (topic=%s).", sub_topic)
-                            "MQTT re-subscribe failed (topic=%s).", sub_topic
-                        )
 
         # VERSION2 on_disconnect signature:
         # (client, userdata, disconnect_flags, reason_code, properties)
@@ -429,6 +483,9 @@ class MqttManager:
             reason_code: mqtt.ReasonCode,
             _properties: mqtt.Properties | None,
         ) -> None:
+            with self._lock:
+                if self._client is not _client or self._client_generation != generation:
+                    return
                 self._connected = False
             if reason_code.is_failure:
                 logger.warning("MQTT disconnected unexpectedly (reason_code=%s).", reason_code)
@@ -441,6 +498,9 @@ class MqttManager:
             _userdata: object,
             message: mqtt.MQTTMessage,
         ) -> None:
+            with self._lock:
+                if self._client is not _client or self._client_generation != generation:
+                    return
                 handler = self._subscriptions.get(message.topic)
             if handler is None:
                 logger.debug(
@@ -469,35 +529,57 @@ class MqttManager:
 
         # Credentials — never log the password
         if settings.mqtt_username:
+            try:
                 client.username_pw_set(
                     username=settings.mqtt_username,
                     password=settings.mqtt_password or None,
                 )
+            except Exception:
+                logger.exception("MQTT credentials setup failed.")
+                return
 
-        # Start background loop thread *before* connect so paho can handle
+        # Publish ownership before network processing/callbacks can begin.
-        # the connection handshake asynchronously.
+        with self._lock:
-        client.loop_start()
+            self._client = client
-
+            self._client_settings = self._settings_key(settings)
+            self._connected = False
+            self._client_loop_started = False
         try:
-            client.connect(
+            client.connect_async(
                 host=settings.mqtt_broker_host,
                 port=settings.mqtt_broker_port,
                 keepalive=60,
             )
+            result = client.loop_start()
+            if isinstance(result, int) and result != mqtt.MQTT_ERR_SUCCESS:
+                raise RuntimeError(f"MQTT loop_start failed (rc={result})")
+            with self._lock:
+                if self._client is client and self._client_generation == generation:
+                    self._client_loop_started = True
         except Exception:
+            # Remove ownership before joining the loop; callbacks from this
+            # generation become inert immediately.
+            with self._lock:
+                if self._client is client and self._client_generation == generation:
+                    self._client = None
+                    self._client_settings = None
+                    self._connected = False
+                    self._client_loop_started = False
             # Log without leaking the password
             logger.exception(
                 "MQTT connect failed (host=%s, port=%s). Stopping loop.",
                 settings.mqtt_broker_host,
                 settings.mqtt_broker_port,
             )
+            try:
+                client.disconnect()
+            except Exception:
+                pass
             try:
                 client.loop_stop()
             except Exception:
                 pass
             return
-
-        self._client = client
         logger.info(
             "MQTT client started (host=%s, port=%s).",
             settings.mqtt_broker_host,
@@ -506,11 +588,17 @@ class MqttManager:
 
     def _stop_client(self) -> None:
         """Disconnect and stop the background loop.  Idempotent."""
+        with self._lock:
             client = self._client
             if client is None:
+                self._connected = False
+                self._client_settings = None
                 return
             self._client = None
+            self._client_settings = None
             self._connected = False
+            self._client_loop_started = False
+            self._client_generation += 1
         try:
             client.disconnect()
         except Exception:

app/main.py

@@ -169,9 +169,12 @@ def _run_scheduled_ha_state_publish() -> None:
     session: Session = session_local()
     try:
         runtime_settings = build_runtime_settings(session, get_settings())
-        # Reconnect if MQTT is configured (in DB) but not yet connected.
+        # Ensure the configured MQTT client is installed; the manager avoids
-        if mqtt_manager.is_configured(runtime_settings) and not mqtt_manager.is_connected:
+        # replacing it while Paho is already retrying a transient disconnect.
-            logger.info("_run_scheduled_ha_state_publish: MQTT configured but not connected — attempting connect.")
+        if mqtt_manager.is_configured(runtime_settings):
+            # connect() is idempotent for the same settings and retains a Paho
+            # client while its own loop is retrying a transient disconnect.
+            logger.info("_run_scheduled_ha_state_publish: ensuring MQTT client is active.")
             mqtt_manager.connect(runtime_settings)
         publish_discovery(session)
         publish_states(session)

docker-compose.yml

@@ -5,6 +5,11 @@ services:
     user: "1000:1000"
     restart: "no"
     init: true
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "3"
     command: ["python", "-m", "scripts.run_migrations"]
     environment:
       TZ: "${TZ:-Europe/Amsterdam}"
@@ -19,6 +24,11 @@ services:
     user: "1000:1000"
     restart: unless-stopped
     init: true
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "3"
     environment:
       TZ: "${TZ:-Europe/Amsterdam}"
     depends_on:

docs/design/m8-warmtelink-energy.md

@@ -1214,9 +1214,25 @@ M8 收尾的前置条件。agent 不得执行、记录为已执行，或以 mock
 
 ## 14. Post-M8 lifecycle repair（M8-R08～R10）
 
+### M8-R16 — HA Water Energy Discovery metadata
+
+active `hot_water` Meter 的 total/today MQTT Discovery metadata 从通用 `volume` 修正为 Home
+Assistant Energy Water 所要求的 `water`；保留 `m³` 与 `total_increasing`。区域供暖继续使用合法的
+`energy + GJ` 组合，thermal EUR 成本实体以及既有 key、identity、unique_id 和 topic 均不变。
+
 ### M8-R15 — HA Discovery identity/topic repair
 
-修复 HA 将多值 `device.identifiers` 任一匹配合并的风险：Source、Meter、Modbus 与成本 epoch 均使用单一完整 namespaced identifier，内部 MQTT identity 独立保存。thermal 的既有点号 identity/key 保持兼容，node/object topic segment 单独规范化；仅对 v1.6.1 实际发布过的 dot topic 做可重试、成功后抑制的精确 retained cleanup。新增默认关闭的 `Thermal Hot Water Total/Today`，金额为 `hot_water_heating + hot_water`，不含 `hot_water_tax`。
+修复 HA 将多值 `device.identifiers` 任一匹配合并的风险：Source、Meter、Modbus 与成本 epoch 均使用单一完整 namespaced identifier，内部 MQTT identity 独立保存。thermal 的既有点号 identity/key 保持兼容，node/object topic segment 单独规范化；仅对 v1.6.1 实际发布过的 dot topic 做可重试、成功后抑制的精确 retained cleanup。新增默认关闭的 `Thermal Hot Water Total/Today`；其后由 R17 明确为 hot-water 的 all-in 分配值。
+
+### M8-R17 — Thermal HA standing-cost allocation
+
+保持全部 thermal HA entity key、unique_id 与名称不变，只调整 `Thermal Heating Total/Today` 与
+`Thermal Hot Water Total/Today` 的数值语义。Heating 为 `heating` variable 加上
+`heating_network`、`metering`、`delivery_set`、`other` 四项 fixed breakdown；Hot Water 为
+`hot_water_heating + hot_water + hot_water_tax` 加上 `hot_water_network`。因此两者之和精确等于
+`Thermal All-in Total/Today`，每项 standing 只分配一次。component 实体（hot-water heating、water、
+water tax）继续只显示 variable，`Fixed` 继续显示全部 standing；provider 只读取 `meter_cost.summarize`
+在 01:05 结算后的结果，不改 15 分钟 ledger、API/schema 或数据库。
 
 M8 交付后的 Meter lifecycle 修复链记录在本地 `review-notes/M8-meter-lifecycle-repair-plan.md`。
 它不新增 ORM / **数据库** schema 或 Alembic revision，不做启动自动修复、一次性数据脚本或历史删除；R08 虽然

docs/design/mqtt-reliability-fixes.md

@@ -0,0 +1,124 @@
+# MQTT 可靠性修复 — 2026-10-11
+
+本次范围为 MQTT-FIX-T01 → MQTT-FIX-T02，依赖顺序执行，两张卡自动继续。
+按 [AGENTS.md](../../AGENTS.md) 与 [协作契约](README.md) 实现、独立审查及返工。
+`done` 仅代表源码自动化技术验收完成；**源码修复完成后仍须人工部署与生产验证**。
+中文实现、审查及返工简报存放于已忽略的 `review-notes/`，不入库。
+
+## 证据与边界
+
+排查日期 2026-10-11，Europe/Amsterdam。以下生产观察由用户提供，未在本轮访问生产确认：
+
+1. 应用当天约 01:00 启动，故障前未自动重启、未发生 OOM。
+2. 16:50:43 起出现 `MQTT disconnected unexpectedly (reason_code=Unspecified error).`。
+3. 截至约 22:34 累计约 270 万条断线日志；22:34–22:35 一分钟内 15,283 次断线、101 次 publish rejected。
+4. 一个 uvicorn 进程、284 个总线程；并非已经确认 284 个 MQTT 客户端。
+5. 主 client ID 为 `home-automation`；配置最后更新时间为 2026-08-28，当天未观察到变更。
+6. Modbus、WarmteLink 串口及独立 DSMR MQTT source 仍有新数据，不能描述为 broker 整体停止服务。
+7. 生产镜像的 `app/main.py`、`app/integrations/mqtt.py` SHA256 与源码一致。
+8. 用户在 broker 日志中看到大量新连接及 `session taken over`。
+9. 22:37 用户授权重启应用后，观察超过一分钟未见新异常断线或发布失败，各采集源恢复；仅属临时恢复。
+10. 首次断线触发原因未知，不能将网络故障或 broker 重启写成事实。
+
+待独立核实的链路：60 秒 HA 发布任务在未连接时调用 `connect()`；它无条件创建同 ID Paho
+client/线程、覆盖引用但未停旧 client；旧回调能覆盖共享连接状态。已有离线 fake 复现只是
+排查线索，不能代替本轮回归测试。
+
+部署背景：生产日志配置为 `{"Type":"json-file","Config":{}}`；约 276 万行日志，按内容
+估算 JSON 文件约 353 MiB（非 stat 精确大小），当时约 666 GB 空闲，无即时容量危机。
+生产 Compose 在 `/home/tianyu/.local/share/homeautomation`，与源码 Compose 是两个文件。
+
+**本轮禁止**：push、tag、改写已推送历史、修改生产配置、重启/重建生产容器、连接真实
+MQTT broker（包括 `10.238.75.82:1883`）、访问真实串口、改动生产数据库或日志；禁止
+清空历史日志、删除 Docker 文件、prune、变更全局 Docker daemon。仅提供部署步骤。
+允许源码/测试/部署文档修改、本地 commit、fixup 及整理本轮尚未推送提交。保留已有无关改动。
+
+### MQTT-FIX-T01 — 修复主 MQTT 客户端生命周期
+
+- **Status**: `done`
+- **Depends**: none
+- **Context**: 防止短暂断线后定时任务创建同 ID 客户端累积，避免旧回调污染新连接。
+
+**Files**
+- `modify app/integrations/mqtt.py`
+- `modify app/main.py`
+- `modify tests/test_mqtt_client.py`
+- `modify tests/test_mqtt_subscribe.py`
+- `create tests/test_mqtt_scheduler.py`（必要的调度任务回归）
+- `modify README.md`（MQTT 生命周期说明）
+- `modify .gitignore`（编排过程报告目录保护）
+- `create docs/design/mqtt-reliability-fixes.md`（主线维护任务与 Status）
+
+**Steps**
+1. 独立核实当前生命周期、回调及调度代码，结合安装的 Paho 2.1.0 源码核对启动顺序和失败清理。
+2. 使同配置 `connect()` 幂等，区分正在连接、等待自动重连、无客户端；现有 client 能自动重连时不再创建额外 client。
+3. 初始连接失败、初始化失败、后台循环失效均须可恢复，失败对象/循环清理，不能永久跳过重试。
+4. 配置变更安全停止、清理旧 client 后替换，受管理的主 client 只有一个。
+5. connect/disconnect/message 回调核验身份或 generation，拒绝旧状态及过期消息。
+6. 处理创建、替换、关闭与回调并发；不能持有回调需要的锁调用等待网络线程退出的 `loop_stop()`。
+7. 保持独立 DSMR source、订阅恢复、MQTT 测试身份及现有 publish 行为兼容。
+8. 增加离线故障与并发回归，更新生命周期说明，运行适用闸门并保存中文实现简报。
+
+**Out of scope / 不要碰**
+- 不使用随机 ID、单纯换 ID 或降低日志级别掩盖问题。
+- 不改变 HTTP 路由/schema/docstring；如确有必要变更，须同步 OpenAPI 和前端类型。
+- 不改变旧 milestone 完成状态；不访问生产或真实设备；不处理已有 Compose 串口改动。
+
+**Acceptance criteria**
+- [x] 同配置重复 connect 及断线后多轮定时任务不累积 client 或后台循环。
+- [x] 初次连接/初始化失败后能重试，失败对象和循环被清理，循环失效也有恢复路径。
+- [x] 配置重连后旧 client 停止，旧 connect/disconnect/message 回调不能影响新状态或处理过期消息。
+- [x] 当前 client 重连成功后恢复订阅与发布。
+- [x] shutdown、reconnect 与回调交错时能完成、不死锁。
+- [x] 新测试使用 mock/fake 及合成配置，不连接生产 broker 或真实串口；覆盖行为与并发边界。
+- [x] DSMR source、测试 client ID 及现有 publish 行为兼容。
+- [x] pytest、ruff 全绿，独立 Reviewer 重跑；如适用同步契约/检查构建上下文。
+
+**Reviewer checklist**
+- 独立核查 Paho 2.1.0 生命周期顺序、线程泄漏、状态污染、死锁及失败恢复，不仅断言内部实现细节。
+- 核查调度触发路径、多轮断线自动重连、配置替换与关闭交错，以及旧消息拒绝。
+- 核查 DSMR 独立客户端及订阅/publish/test identity 回归风险。
+- 先读对应实现/返工简报，独立重跑闸门；报告 PASS 或编号返工清单，不改实现或 Git。
+
+### MQTT-FIX-T02 — 为 Docker 日志配置轮转
+
+- **Status**: `done`
+- **Depends**: MQTT-FIX-T01
+- **Context**: 为本项目容器限定日志保留，明确源码修改与生产容器应用配置是两个操作。
+
+**Files**
+- `modify docker-compose.yml`
+- `modify docker-compose.dev.yml`（仅必要时）
+- `modify README.md`（部署说明）
+- `modify tests/test_deployment.py`（必要的静态检查）
+- `modify docs/design/mqtt-reliability-fixes.md`（主线维护 Status）
+
+**Steps**
+1. 为 app 与 migration 均配置 `logging.driver: json-file`，字符串 options `max-size: "10m"`、`max-file: "3"`。
+2. 验证开发 override 合并后保留相同合理的轮转配置，不修改全局 daemon 或其他项目。
+3. 用 `docker compose config --quiet` 或等效静态检查验证基础与合并配置；不输出含凭据的完整配置。
+4. 说明宿主机日志路径 `/var/lib/docker/containers/<完整ID>/<完整ID>-json.log`、`docker logs`、保留策略。
+5. 明确仅 `docker restart` 不应用 logging 配置，需要重建容器。
+6. 给出生产目录 `/home/tianyu/.local/share/homeautomation` 中的最小配置同步、重建、验证与回退步骤。
+7. 写清发布源码修复镜像与仅应用日志配置各自前提，以及短暂采集中断；不覆盖生产设备/volume/env 等配置。
+8. 保存中文简报，跑 pytest / ruff 和配置验证，独立 Reviewer 核查可执行性。
+
+**Out of scope / 不要碰**
+- 不自动部署，不清空或删除日志，不 prune，不触碰设备历史数据。
+- 不修改全局 Docker daemon；不把源码配置变更描述为生产已生效。
+- 不纳入用户已有的串口映射/group_add 改动。
+
+**Acceptance criteria**
+- [x] app、migration 最终 Compose 均含指定字符串 logging options。
+- [x] 开发 override 合并后日志配置正确。
+- [x] Compose 经 config --quiet 或等效静态检查，不输出凭据。
+- [x] 文档说明日志路径、docker logs、保留策略、restart 无效而须重建。
+- [x] 文档明确生产路径、最小同步、镜像更新前提、采集中断、验证与回退；区分镜像发布和日志配置应用。
+- [x] 无生产操作、数据/日志删除，已有无关改动保留。
+- [x] pytest、ruff 全绿，独立 Reviewer 重跑并核查合并及部署可执行性。
+
+**Reviewer checklist**
+- 核查 logging options 类型及基础/开发配置合并；静态配置检查的范围和凭据保护。
+- 核查生产/source Compose 分离，镜像构建发布前提与 logging 重建步骤是否明确。
+- 核查只涉及 app/migration，不变更串口、volume、生产 DB、全局 daemon；说明旧日志在重建时的 Docker 生命周期影响及可回退方式。
+- 先读对应实现/返工简报，独立重跑闸门，给 PASS 或编号返工清单。

docs/warmtelink-energy.md

@@ -77,7 +77,13 @@ docker compose -f docker-compose.yml run --rm migration
 
 成本页的 15 分钟 ledger 分开显示 heating 与 hot-water 三项 variable breakdown；fixed 费只在合同级 summary 按本地自然日计提一次，all-in = variable + fixed。用显式 recompute 来验证测试时间窗时，应手算并核对 Decimal 金额，保留原有 electricity 合同和数字不变。
 
-在 Config 的 HA Expose 中只开启需要的 source、Meter 与 thermal entities。核对 unit、state class、availability、today reset 和换表后 identity；关闭 toggle 后应用会清理 retained discovery。不要把 source secret、设备 identity 或合同金额放进 HA entity 名称、日志或截图。
+在 Config 的 HA Expose 中只开启需要的 source、Meter 与 thermal entities。`Thermal Heating Total/Today`
+显示 heating variable 加上 heating network、metering、delivery set 与 other 固定费；`Thermal Hot Water
+Total/Today` 显示 hot-water heating、water、water tax variable 加上 hot-water network 固定费。两条合计
+恰好等于 `Thermal All-in Total/Today`；component entities 仍仅显示各自 variable，`Fixed` 仍显示全部
+standing，避免重复计费。数值仍来自在 01:05 后结算的 summary。核对 unit、state class、availability、today
+reset 和换表后 identity；关闭 toggle 后应用会清理 retained discovery。不要把 source secret、设备 identity
+或合同金额放进 HA entity 名称、日志或截图。
 
 ## 安全回滚
 

frontend/package-lock.json

@@ -22,13 +22,14 @@
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         "react-feather": "^2.0.10",
         "react-leaflet": "^4.2.1",
-        "react-router-dom": "^6.30.4",
+        "react-router-dom": "^7.18.3",
         "recharts": "^3.8.1"
       },
       "devDependencies": {
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-        "@testing-library/react": "^14.3.1",
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       "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/puzrin"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/nodeca"
+        }
+      ],
       "license": "MIT",
       "dependencies": {
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-        "call-bind": "^1.0.7",
-        "define-properties": "^1.2.1"
-      },
-      "engines": {
-        "node": ">= 0.4"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/ljharb"
-      }
-    },
     "node_modules/object-keys": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.1.1.tgz",
@@ -5842,9 +5708,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.5.15",
+      "version": "8.5.26",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.15.tgz",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.26.tgz",
-      "integrity": "sha512-FfR8sjd4em2T6fb3I2MwAJU7HWVMr9zba+enmQeeWFfCbm+UOC/0X4DS8XtpUTMwWMGbjKYP7xjfNekzyGmB3A==",
+      "integrity": "sha512-u82N74LFzG8ca+dD8puPnplTXoGH4fTPpVGuIbt36G3qvNlkvfD0lEAZSxaly3KX8TS/L1A1gsCEmvKmBcVbkQ==",
       "dev": true,
       "funding": [
         {
@@ -5862,7 +5728,7 @@
       ],
       "license": "MIT",
       "dependencies": {
-        "nanoid": "^3.3.12",
+        "nanoid": "^3.3.17",
         "picocolors": "^1.1.1",
         "source-map-js": "^1.2.1"
       },
@@ -6092,35 +5958,41 @@
       }
     },
     "node_modules/react-router": {
-      "version": "6.30.4",
+      "version": "7.18.3",
-      "resolved": "https://registry.npmjs.org/react-router/-/react-router-6.30.4.tgz",
+      "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.18.3.tgz",
-      "integrity": "sha512-SVUsDe+DybHM/WmYKIVYhZh1o5Dcuf16yM6WjG02Q9XVFMZIJyHYhwrr6bFBXZkVP6z69kNkMyBCujt8FaFLJA==",
+      "integrity": "sha512-gyXgtdr5uACJ5b1Q4udzjVV+tb/rlHIMJKuJ0e89R4Kzgz47z/rgP0dIKxktqIEUhDHluGTPJJH/wRha7CyqsA==",
       "license": "MIT",
       "dependencies": {
-        "@remix-run/router": "1.23.3"
+        "cookie": "^1.0.1",
+        "set-cookie-parser": "^2.6.0"
       },
       "engines": {
-        "node": ">=14.0.0"
+        "node": ">=20.0.0"
       },
       "peerDependencies": {
-        "react": ">=16.8"
+        "react": ">=18",
+        "react-dom": ">=18"
+      },
+      "peerDependenciesMeta": {
+        "react-dom": {
+          "optional": true
+        }
       }
     },
     "node_modules/react-router-dom": {
-      "version": "6.30.4",
+      "version": "7.18.3",
-      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-6.30.4.tgz",
+      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-7.18.3.tgz",
-      "integrity": "sha512-q4HvNl+mmDdkS0g+MqiBZNteQJCuimWoOyHMy4T/RQLAn9Z29+E91QXRaxOujeMl2HTzRSS0KFPd7lxX3PjV0Q==",
+      "integrity": "sha512-ytVbyBBM7vMfRCam25r0WMhSVSom909A8p+8m0/f1w853dz/xfFu6etAT2SEbVoSnI+ZoPRDqIsQXVT89gp7kg==",
       "license": "MIT",
       "dependencies": {
-        "@remix-run/router": "1.23.3",
+        "react-router": "7.18.3"
-        "react-router": "6.30.4"
       },
       "engines": {
-        "node": ">=14.0.0"
+        "node": ">=20.0.0"
       },
       "peerDependencies": {
-        "react": ">=16.8",
+        "react": ">=18",
-        "react-dom": ">=16.8"
+        "react-dom": ">=18"
       }
     },
     "node_modules/react-style-singleton": {
@@ -6447,6 +6319,12 @@
         "semver": "bin/semver.js"
       }
     },
+    "node_modules/set-cookie-parser": {
+      "version": "2.7.2",
+      "resolved": "https://registry.npmjs.org/set-cookie-parser/-/set-cookie-parser-2.7.2.tgz",
+      "integrity": "sha512-oeM1lpU/UvhTxw+g3cIfxXHyJRc/uidd3yK1P242gzHds0udQBYzs3y8j4gCCW+ZJ7ad0yctld8RYO+bdurlvw==",
+      "license": "MIT"
+    },
     "node_modules/set-function-length": {
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/set-function-length/-/set-function-length-1.2.2.tgz",
@@ -7080,9 +6958,9 @@
       }
     },
     "node_modules/undici": {
-      "version": "7.27.2",
+      "version": "7.29.0",
-      "resolved": "https://registry.npmjs.org/undici/-/undici-7.27.2.tgz",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-7.29.0.tgz",
-      "integrity": "sha512-uZsKNuzQxDMUY6M3pIMvy5tvlGmtq8XJ2oLAkfRKGNu+1VQAIvLy2xIVG5ATZl5wDXl/tddByAWCizRbOme+TA==",
+      "integrity": "sha512-IDxfleLmmbSskfWSUATiN1nfn2rDuvnMOqb5CWR92iIfojA0Ud+ulOAAEQ57LPr9rWmsreUyf5lwyao+7GNNVw==",
       "dev": true,
       "license": "MIT",
       "engines": {

frontend/package.json

@@ -27,13 +27,14 @@
     "react-dom": "^18.3.1",
     "react-feather": "^2.0.10",
     "react-leaflet": "^4.2.1",
-    "react-router-dom": "^6.30.4",
+    "react-router-dom": "^7.18.3",
     "recharts": "^3.8.1"
   },
   "devDependencies": {
     "@eslint/js": "^9.39.4",
+    "@testing-library/dom": "10.4.1",
     "@testing-library/jest-dom": "^6.9.1",
-    "@testing-library/react": "^14.3.1",
+    "@testing-library/react": "16.3.0",
     "@testing-library/user-event": "^14.6.1",
     "@types/react": "^18.3.31",
     "@types/react-dom": "^18.3.7",

frontend/src/energy/CostView.test.tsx

@@ -462,12 +462,17 @@ describe('CostView', () => {
 
   it('paginates the complete thermal ledger and resets offset when its range or scope changes', async () => {
     const user = userEvent.setup()
-    const lastRow = { ...THERMAL_ROW, period_start: '2026-06-22T12:00:00Z', quantity: '501' }
+    const firstPageRows = Array.from({ length: 500 }, (_, index) => {
+      const periodStart = new Date(Date.UTC(2026, 5, 22, 10, index * 15))
+      const periodEnd = new Date(Date.UTC(2026, 5, 22, 10, (index + 1) * 15))
+      return { ...THERMAL_ROW, period_start: periodStart.toISOString(), period_end: periodEnd.toISOString() }
+    })
+    const lastRow = { ...THERMAL_ROW, period_start: '2026-06-27T15:00:00Z', period_end: '2026-06-27T15:15:00Z', quantity: '501' }
     mockGet.mockImplementation((path: string, options?: { params?: { query?: { offset?: number } } }) => {
       if (path === '/api/energy/meters') return Promise.resolve({ data: { items: [ACTIVE_HEATING_METER, ACTIVE_HOT_WATER_METER], total: 2 } })
       if (path === '/api/energy/meter-costs') {
         const offset = options?.params?.query?.offset ?? 0
-        return Promise.resolve({ data: offset === 0 ? { items: Array.from({ length: 500 }, () => THERMAL_ROW), total: 501 } : { items: [lastRow], total: 501 } })
+        return Promise.resolve({ data: offset === 0 ? { items: firstPageRows, total: 501 } : { items: [lastRow], total: 501 } })
       }
       if (path === '/api/energy/meter-costs/summary') return Promise.resolve({ data: THERMAL_SUMMARY })
       if (path === '/api/energy/costs/summary') return Promise.resolve({ data: SUMMARY })

frontend/src/energy/MeterManager.test.tsx

@@ -15,7 +15,7 @@
  */
 
 import { describe, it, expect, vi, beforeEach } from 'vitest'
-import { screen, waitFor } from '@testing-library/react'
+import { screen, waitFor, waitForElementToBeRemoved } from '@testing-library/react'
 import userEvent from '@testing-library/user-event'
 import { renderWithProviders } from '../test-utils'
 import { MeterManager } from './MeterManager'
@@ -1197,20 +1197,24 @@ describe('MeterManager — lifecycle modal submissions', () => {
 
       let input: HTMLInputElement
       let submit: HTMLElement
+      let modal: HTMLElement
       if (entry === 'close') {
         await user.click(await screen.findByRole('button', { name: 'Close meter' }))
-        input = screen.getByTestId(`close-meter-modal-${ACTIVE_METER.id}`).querySelector('input[type="datetime-local"]')!
+        modal = screen.getByTestId(`close-meter-modal-${ACTIVE_METER.id}`)
+        input = modal.querySelector('input[type="datetime-local"]')!
         submit = screen.getAllByRole('button', { name: 'Close meter' })[1]
       } else if (entry === 'unbind') {
         await user.click(await screen.findByRole('button', { name: 'Unbind' }))
-        input = screen.getByTestId('unbind-modal-pending-source').querySelector('input[type="datetime-local"]')!
+        modal = screen.getByTestId('unbind-modal-pending-source')
+        input = modal.querySelector('input[type="datetime-local"]')!
         submit = screen.getAllByRole('button', { name: 'Unbind' })[1]
       } else {
         await user.click(await screen.findByRole('button', { name: entry === 'direct bind' ? 'Bind source' : entry === 'same-meter transfer' ? 'Transfer source' : 'Recover binding' }))
         await chooseChannel(user)
-        input = entry === 'direct bind'
+        modal = entry === 'direct bind'
-          ? screen.getByTestId(`direct-bind-modal-${ACTIVE_METER.id}`).querySelector('input[type="datetime-local"]')!
+          ? screen.getByTestId(`direct-bind-modal-${ACTIVE_METER.id}`)
-          : screen.getByTestId('transfer-effective-at')
+          : screen.getByTestId('transfer-modal-pending-source')
+        input = entry === 'direct bind' ? modal.querySelector('input[type="datetime-local"]')! : screen.getByTestId('transfer-effective-at')
         const submitButtons = screen.getAllByRole('button', { name: entry === 'direct bind' ? 'Bind source' : 'Transfer binding' })
         submit = submitButtons[submitButtons.length - 1]
       }
@@ -1224,6 +1228,7 @@ describe('MeterManager — lifecycle modal submissions', () => {
       await user.type(input, '{Enter}')
       expect(entry === 'unbind' ? mockPatch : mockPost).toHaveBeenCalledTimes(1)
       release()
+      await waitForElementToBeRemoved(modal)
     },
   )
 

frontend/src/pages/HomePage.test.tsx

@@ -10,7 +10,7 @@
  */
 
 import { describe, it, expect, vi, beforeEach } from 'vitest'
-import { render, screen, fireEvent, waitFor } from '@testing-library/react'
+import { act, render, screen, fireEvent, waitFor } from '@testing-library/react'
 import { MantineProvider } from '@mantine/core'
 import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
 import { MemoryRouter } from 'react-router-dom'
@@ -199,7 +199,7 @@ describe('HomePage', () => {
       altitude: null,
     }
     expect(capturedOnSelectLocation).toBeDefined()
-    capturedOnSelectLocation!(record)
+    act(() => capturedOnSelectLocation!(record))
 
     // EditLocationModal should appear
     await waitFor(() => screen.getByTestId('edit-location-modal'))
@@ -216,7 +216,7 @@ describe('HomePage', () => {
       longitude: 116.41,
     }
     expect(capturedOnSelectPoo).toBeDefined()
-    capturedOnSelectPoo!(record)
+    act(() => capturedOnSelectPoo!(record))
 
     await waitFor(() => screen.getByTestId('edit-poo-modal'))
     expect(screen.getByTestId('edit-poo-modal')).toBeTruthy()
@@ -232,7 +232,7 @@ describe('HomePage', () => {
       longitude: 116.4,
       altitude: null,
     }
-    capturedOnSelectLocation!(record)
+    act(() => capturedOnSelectLocation!(record))
     await waitFor(() => screen.getByTestId('edit-location-modal'))
 
     fireEvent.click(screen.getByTestId('edit-location-cancel'))
@@ -248,7 +248,7 @@ describe('HomePage', () => {
       latitude: 39.91,
       longitude: 116.41,
     }
-    capturedOnSelectPoo!(record)
+    act(() => capturedOnSelectPoo!(record))
     await waitFor(() => screen.getByTestId('edit-poo-modal'))
 
     fireEvent.click(screen.getByTestId('edit-poo-cancel'))

frontend/src/test-setup.ts

@@ -7,6 +7,28 @@
  * - ResizeObserver (Mantine uses it for responsive components)
  */
 import '@testing-library/jest-dom'
+// Import RTL here so its automatic cleanup hook is registered before the
+// warning assertion below; later test imports reuse the same module instance.
+import { cleanup } from '@testing-library/react'
+import { afterEach, beforeEach } from 'vitest'
+import { assertNoReactTestWarnings, createReactWarningGuard } from './test-warning-guard'
+
+const originalConsoleError = console.error
+const reactTestWarnings: unknown[][] = []
+
+console.error = createReactWarningGuard(originalConsoleError, reactTestWarnings)
+
+beforeEach(() => {
+  reactTestWarnings.length = 0
+})
+
+afterEach(() => {
+  // Run teardown before checking the guard. RTL's automatic cleanup is also
+  // registered, but cleanup is idempotent and this ordering keeps a guard
+  // failure from preventing a later test from starting with stale portals.
+  cleanup()
+  assertNoReactTestWarnings(reactTestWarnings)
+})
 
 // ---------------------------------------------------------------------------
 // window.matchMedia polyfill (jsdom does not implement this)

frontend/src/test-utils.test.tsx

@@ -0,0 +1,16 @@
+import { screen } from '@testing-library/react'
+import { useMantineEnv } from '@mantine/core'
+import { describe, expect, it } from 'vitest'
+import { renderWithProviders } from './test-utils'
+
+function MantineEnvironmentProbe() {
+  return <output>{useMantineEnv()}</output>
+}
+
+describe('renderWithProviders', () => {
+  it('uses Mantine test environment', () => {
+    renderWithProviders(<MantineEnvironmentProbe />)
+
+    expect(screen.getByText('test')).toBeInTheDocument()
+  })
+})

frontend/src/test-utils.tsx

@@ -51,7 +51,7 @@ export function renderWithProviders(ui: ReactNode, options: RenderOptions = {})
 
   function Wrapper() {
     return (
-      <MantineProvider>
+      <MantineProvider env="test">
         <QueryClientProvider client={queryClient}>
           <MemoryRouter initialEntries={entries}>
             <Routes>

frontend/src/test-warning-guard.test.ts

@@ -0,0 +1,40 @@
+import { describe, expect, it, vi } from 'vitest'
+import {
+  assertNoReactTestWarnings,
+  createReactWarningGuard,
+  formatReactTestWarnings,
+  isReactTestWarning,
+} from './test-warning-guard'
+
+describe('React test warning guard', () => {
+  it('recognizes React act and duplicate-key warnings only', () => {
+    expect(isReactTestWarning(['Warning: An update to Example inside a test was not wrapped in act(...).'])).toBe(true)
+    expect(isReactTestWarning(['Warning: Each child in a list should have a unique "key" prop.'])).toBe(true)
+    expect(isReactTestWarning(['Warning: Encountered two children with the same key, `duplicate`.'])).toBe(true)
+    expect(isReactTestWarning(['network request failed'])).toBe(false)
+  })
+
+  it('collects target warnings for one compact diagnostic and forwards unrelated errors', () => {
+    const originalConsoleError = vi.fn()
+    const warnings: unknown[][] = []
+    const guardedConsoleError = createReactWarningGuard(originalConsoleError, warnings)
+
+    guardedConsoleError('Warning: An update to Example inside a test was not wrapped in act(...)')
+    guardedConsoleError('Warning: An update to Other inside a test was not wrapped in act(...)')
+    guardedConsoleError('Warning: Encountered two children with the same key, `duplicate`.')
+    guardedConsoleError('network request failed', { status: 500 })
+
+    expect(originalConsoleError).toHaveBeenCalledTimes(1)
+    expect(originalConsoleError).toHaveBeenCalledWith('network request failed', { status: 500 })
+    expect(formatReactTestWarnings(warnings)).toBe(
+      'React act warning: 2, React duplicate-key warning: 1 (Example, Other)',
+    )
+    expect(() => assertNoReactTestWarnings(warnings)).toThrow(
+      'React test warning guard: React act warning: 2, React duplicate-key warning: 1 (Example, Other).',
+    )
+  })
+
+  it('passes only when no target warnings were captured', () => {
+    expect(() => assertNoReactTestWarnings([])).not.toThrow()
+  })
+})

frontend/src/test-warning-guard.ts

@@ -0,0 +1,55 @@
+/**
+ * Fail tests that emit React warnings which otherwise only reach console.error.
+ *
+ * The guard intentionally forwards every unrelated console error unchanged.
+ * It collects only the two warnings that make React test results unreliable and
+ * reports one compact error per test instead of flooding CI logs with stacks.
+ */
+export function isReactTestWarning(args: unknown[]): boolean {
+  const message = args.map((arg) => String(arg)).join(' ')
+  return (
+    message.includes('not wrapped in act(...)') ||
+    message.includes('Each child in a list should have a unique "key"') ||
+    message.includes('Encountered two children with the same key')
+  )
+}
+
+export function createReactWarningGuard(
+  originalConsoleError: (...args: unknown[]) => void,
+  warnings: unknown[][],
+): (...args: unknown[]) => void {
+  return (...args: unknown[]) => {
+    if (isReactTestWarning(args)) {
+      warnings.push(args)
+      return
+    }
+    originalConsoleError(...args)
+  }
+}
+
+export function formatReactTestWarnings(warnings: unknown[][]): string {
+  const kinds = new Map<string, number>()
+  for (const args of warnings) {
+    const kind = args.map((arg) => String(arg)).join(' ').includes('not wrapped in act(...)')
+      ? 'React act warning'
+      : 'React duplicate-key warning'
+    kinds.set(kind, (kinds.get(kind) ?? 0) + 1)
+  }
+  const summaries = [...kinds.entries()].map(([kind, count]) => `${kind}: ${count}`).join(', ')
+  const components = [...new Set(warnings
+    .map((args) => {
+      const message = String(args[0])
+      return message.includes('An update to %s inside a test') ? String(args[1]) : message.match(/An update to (.+?) inside a test/)?.[1]
+    })
+    .filter((component): component is string => Boolean(component)))].slice(0, 3)
+  return components.length > 0 ? `${summaries} (${components.join(', ')})` : summaries
+}
+
+export function assertNoReactTestWarnings(warnings: unknown[][]): void {
+  if (warnings.length > 0) {
+    throw new Error(
+      `React test warning guard: ${formatReactTestWarnings(warnings)}. ` +
+      'Await the observable update, close/removal, or query settlement that caused it.',
+    )
+  }
+}

frontend/vite.config.ts

@@ -19,6 +19,13 @@ export default defineConfig({
   test: {
     environment: 'jsdom',
     globals: true,
+    // Keep test output identical in interactive, agent, and CI environments.
+    // Vitest otherwise selects its minimal agent reporter when CODEX_CI is set,
+    // which hides console output from passing tests.
+    reporters: ['default'],
+    // Mantine-heavy UI tests allocate substantial jsdom resources. Keep the
+    // worker pool bounded so concurrent CI jobs remain reliable.
+    maxWorkers: 2,
     setupFiles: ['./src/test-setup.ts'],
     env: {
       // Lock the test timezone to UTC so that date-formatting assertions

tests/test_deployment.py

@@ -87,6 +87,23 @@ def test_compose_defaults_business_timezone_and_dev_inherits_it() -> None:
         assert "TZ" not in dev["services"].get(service_name, {}).get("environment", {})
 
 
+def test_compose_log_rotation_is_string_typed_and_dev_inherits_it() -> None:
+    """Both services use bounded json-file logs; dev layering keeps base policy."""
+    base = _read_yaml("docker-compose.yml")
+    dev = _read_yaml("docker-compose.dev.yml")
+    expected = {
+        "driver": "json-file",
+        "options": {"max-size": "10m", "max-file": "3"},
+    }
+
+    for service_name in ("migration", "app"):
+        base_logging = base["services"][service_name]["logging"]
+        assert base_logging == expected
+        assert all(isinstance(value, str) for value in base_logging["options"].values())
+        # The override does not define logging, so Compose retains the base value.
+        assert "logging" not in dev["services"].get(service_name, {})
+
+
 def test_compose_keeps_app_non_root_and_maps_minimal_warmtelink_serial_access() -> None:
     """Base Compose maps the configured device with only pyserial's required access.
 

tests/test_energy_expose.py

@@ -2788,7 +2788,11 @@ def test_m8_catalog_has_source_meter_and_thermal_entities_disabled(energy_db) ->
     assert entries[f"meter.{heating.uuid}.total"].entity.unit == "GJ"
     assert entries[f"meter.{heating.uuid}.total"].entity.device_class == "energy"
     assert entries[f"meter.{water.uuid}.total"].entity.unit == "m³"
-    assert entries[f"meter.{water.uuid}.total"].entity.device_class == "volume"
+    for suffix in ("total", "today"):
+        water_entity = entries[f"meter.{water.uuid}.{suffix}"].entity
+        assert water_entity.device_class == "water"
+        assert water_entity.unit == "m³"
+        assert water_entity.state_class == "total_increasing"
     assert entries[f"meter.{electricity.uuid}.total"].entity.unit == "kWh"
     assert entries[f"meter.{electricity.uuid}.total"].entity.device_class == "energy"
     assert entries[f"meter.{electricity.uuid}.today"].entity.state_class == "total_increasing"
@@ -2812,6 +2816,31 @@ def test_m8_catalog_has_source_meter_and_thermal_entities_disabled(energy_db) ->
     assert all(entry.entity.unit == "EUR" and entry.entity.device_class == "monetary" for entry in thermal)
 
 
+def test_m8_hot_water_discovery_payload_is_ha_energy_compatible(energy_db) -> None:
+    """Hot-water Meter discovery exposes the exact HA Energy Water metadata."""
+    from app.integrations.expose import build_catalog
+    from app.services.ha_discovery import build_discovery_payload
+
+    now = datetime.now(timezone.utc)
+    with Session(energy_db) as session:
+        _source, _channel, meter = _make_thermal_source_and_meter(session, "hot_water", now)
+        session.commit()
+        entries = {item.entity.key: item.entity for item in build_catalog(session)}
+
+    for suffix in ("total", "today"):
+        entity = entries[f"meter.{meter.uuid}.{suffix}"]
+        topic, payload = build_discovery_payload(entity, "homeassistant")
+        assert payload["device_class"] == "water"
+        assert payload["unit_of_measurement"] == "m³"
+        assert payload["state_class"] == "total_increasing"
+        assert payload["unique_id"] == f"{meter.uuid}_meter_{meter.uuid}_{suffix}"
+        assert payload["device"]["identifiers"] == [f"home-automation:meter:{meter.uuid}"]
+        assert topic == (
+            f"homeassistant/sensor/{meter.uuid.replace('-', '_')}/"
+            f"meter_{meter.uuid.replace('-', '_')}_{suffix}/config"
+        )
+
+
 def test_m8_meter_getter_hides_stale_or_offline_source(energy_db) -> None:
     from app.integrations.expose import build_catalog
 
@@ -2973,6 +3002,11 @@ def test_m8_thermal_today_summary_ends_at_frozen_now(energy_db) -> None:
             "heating": Decimal("0"), "hot_water_heating": Decimal("1.25"),
             "hot_water": Decimal("2.75"), "hot_water_tax": Decimal("9.99"),
         },
+        "fixed_breakdown": {
+            "heating_network": Decimal("0"), "metering": Decimal("0"),
+            "delivery_set": Decimal("0"), "hot_water_network": Decimal("0"),
+            "other": Decimal("0"),
+        },
     }
 
     def summarize_spy(_session: Session, start: datetime, end: datetime, *, now: datetime) -> dict:
@@ -2994,5 +3028,53 @@ def test_m8_thermal_today_summary_ends_at_frozen_now(energy_db) -> None:
             assert entity.value_getter(session) == Decimal("0")
             hot_water_total = next(item.entity for item in build_catalog(session)
                                    if item.entity.key.endswith(".hot_water_total_today"))
-            assert hot_water_total.value_getter(session) == Decimal("4.00")
+            assert hot_water_total.value_getter(session) == Decimal("13.99")
     assert captured["end"] == now
+
+
+@pytest.mark.parametrize("suffix", ("total", "today"))
+def test_m8_thermal_totals_allocate_standing_costs_and_match_all_in(energy_db, suffix: str) -> None:
+    """Heating and hot water each receive their assigned costs, without overlap."""
+    from app.integrations.expose import build_catalog
+    from app.services import timezone as tz
+
+    now = datetime(2026, 1, 15, 10, tzinfo=timezone.utc)
+    summary = {
+        "period_count": 2,
+        "fixed_cost": Decimal("35"),
+        "total_cost": Decimal("54"),
+        "breakdown": {
+            "heating": Decimal("10"), "hot_water_heating": Decimal("2"),
+            "hot_water": Decimal("3"), "hot_water_tax": Decimal("4"),
+        },
+        "fixed_breakdown": {
+            "heating_network": Decimal("5"), "metering": Decimal("6"),
+            "delivery_set": Decimal("7"), "hot_water_network": Decimal("9"),
+            "other": Decimal("8"),
+        },
+    }
+
+    with Session(energy_db) as session:
+        _make_thermal_source_and_meter(session, "heating", now)
+        _make_thermal_source_and_meter(session, "hot_water", now)
+        session.commit()
+        with (
+            patch("app.integrations.expose._utc_now", return_value=now),
+            patch.object(tz, "local_tz", return_value=ZoneInfo("Europe/Amsterdam")),
+            patch.object(tz, "local_now", return_value=now.astimezone(ZoneInfo("Europe/Amsterdam"))),
+            patch("app.services.meter_cost.summarize", return_value=summary),
+        ):
+            entities = {item.entity.key.rsplit(".", 1)[-1]: item.entity
+                        for item in build_catalog(session) if item.entity.key.startswith("thermal_cost.")}
+            heating = entities[f"heating_{suffix}"].value_getter(session)
+            hot_water = entities[f"hot_water_total_{suffix}"].value_getter(session)
+
+            assert heating == Decimal("36")  # 10 + heating_network + metering + delivery_set + other
+            assert hot_water == Decimal("18")  # 2 + 3 + 4 + hot_water_network
+            assert entities[f"fixed_{suffix}"].value_getter(session) == Decimal("35")
+            assert entities[f"all_in_{suffix}"].value_getter(session) == Decimal("54")
+            assert heating + hot_water == entities[f"all_in_{suffix}"].value_getter(session)
+            # Component entities deliberately remain variable-only.
+            assert entities[f"hot_water_heating_{suffix}"].value_getter(session) == Decimal("2")
+            assert entities[f"water_{suffix}"].value_getter(session) == Decimal("3")
+            assert entities[f"water_tax_{suffix}"].value_getter(session) == Decimal("4")

tests/test_mqtt_client.py

@@ -4,6 +4,7 @@ All paho interaction is mocked — no real broker is required.
 """
 from __future__ import annotations
 
+import threading
 from unittest.mock import MagicMock, patch
 
 import pytest
@@ -103,7 +104,7 @@ def test_connect_creates_paho_client_with_version2() -> None:
     settings = _make_settings()
 
     mock_client = MagicMock()
-    mock_client.connect.return_value = None
+    mock_client.connect_async.return_value = None
 
     with patch("app.integrations.mqtt.mqtt.Client", return_value=mock_client) as mock_cls:
         with patch("app.integrations.mqtt.mqtt.CallbackAPIVersion"):
@@ -117,7 +118,7 @@ def test_connect_creates_paho_client_with_version2() -> None:
     # loop_start must have been called
     mock_client.loop_start.assert_called_once()
     # connect must have been called with the right host/port
-    mock_client.connect.assert_called_once_with(
+    mock_client.connect_async.assert_called_once_with(
         host="broker.test", port=1883, keepalive=60
     )
 
@@ -133,6 +134,220 @@ def test_connect_uses_configured_client_id() -> None:
     assert mock_cls.call_args.kwargs["client_id"] == "home-automation-dev"
 
 
+def test_connect_same_settings_is_idempotent_even_when_disconnected() -> None:
+    manager = MqttManager()
+    settings = _make_settings()
+    client = MagicMock()
+    with patch("app.integrations.mqtt.mqtt.Client", return_value=client) as cls:
+        manager.connect(settings)
+        manager.connect(settings)
+    cls.assert_called_once()
+    client.loop_start.assert_called_once()
+    client.connect_async.assert_called_once()
+
+
+def test_connect_replaces_client_when_paho_loop_thread_has_exited() -> None:
+    manager = MqttManager()
+    settings = _make_settings()
+    old_client, recovered_client = MagicMock(), MagicMock()
+    with patch("app.integrations.mqtt.mqtt.Client", side_effect=[old_client, recovered_client]):
+        manager.connect(settings)
+        old_client._thread = None
+        manager._client_loop_started = True
+        manager.connect(settings)
+
+    old_client.disconnect.assert_called_once()
+    old_client.loop_stop.assert_called_once()
+    recovered_client.loop_start.assert_called_once()
+
+
+def test_loop_start_failure_cleans_installed_client_for_retry() -> None:
+    manager = MqttManager()
+    failed_client = MagicMock()
+    failed_client.loop_start.return_value = -1
+    recovered_client = MagicMock()
+    with patch("app.integrations.mqtt.mqtt.Client", side_effect=[failed_client, recovered_client]):
+        manager.connect(_make_settings())
+        assert manager._client is None
+        manager.connect(_make_settings())
+
+    failed_client.disconnect.assert_called_once()
+    failed_client.loop_stop.assert_called_once()
+    assert manager._client is recovered_client
+
+
+def test_concurrent_same_config_connect_creates_one_client() -> None:
+    manager = MqttManager()
+    settings = _make_settings()
+    client = MagicMock()
+    barrier = threading.Barrier(3)
+
+    def connect() -> None:
+        barrier.wait(timeout=1)
+        manager.connect(settings)
+
+    with patch("app.integrations.mqtt.mqtt.Client", return_value=client) as cls:
+        workers = [threading.Thread(target=connect) for _ in range(2)]
+        for worker in workers:
+            worker.start()
+        barrier.wait(timeout=1)
+        for worker in workers:
+            worker.join(timeout=2)
+
+    assert all(not worker.is_alive() for worker in workers)
+    cls.assert_called_once()
+    client.loop_start.assert_called_once()
+
+
+@pytest.mark.parametrize("operation", ["disconnect", "reconnect"])
+def test_teardown_can_join_loop_while_disconnect_callback_runs(operation: str) -> None:
+    """A real callback thread must finish while teardown joins the fake loop."""
+    manager = MqttManager()
+    callback_go = threading.Event()
+    callback_entered = threading.Event()
+    callback_done = threading.Event()
+    clients: list[object] = []
+
+    class LoopClient:
+        def __init__(self) -> None:
+            self._thread: threading.Thread | None = None
+            self.on_disconnect = None
+            self.loop_joined = threading.Event()
+
+        def connect_async(self, **_kwargs: object) -> None:
+            pass
+
+        def loop_start(self) -> int:
+            def network_callback() -> None:
+                callback_go.wait(timeout=2)
+                callback_entered.set()
+                try:
+                    self.on_disconnect(self, None, None, MagicMock(is_failure=True), None)
+                finally:
+                    callback_done.set()
+
+            self._thread = threading.Thread(target=network_callback, daemon=True)
+            self._thread.start()
+            return 0
+
+        def disconnect(self) -> None:
+            callback_go.set()
+
+        def loop_stop(self) -> None:
+            assert callback_entered.wait(timeout=1), "callback thread did not start"
+            assert self._thread is not None
+            self._thread.join(timeout=1)
+            assert not self._thread.is_alive(), "callback thread did not exit before loop_stop returned"
+            self.loop_joined.set()
+
+        def cleanup(self) -> None:
+            callback_go.set()
+            if self._thread is not None:
+                self._thread.join(timeout=1)
+
+    def make_client(**_kwargs: object) -> LoopClient:
+        client = LoopClient()
+        clients.append(client)
+        return client
+
+    try:
+        with patch("app.integrations.mqtt.mqtt.Client", side_effect=make_client):
+            manager.connect(_make_settings())
+            old_client = clients[0]
+            if operation == "disconnect":
+                manager.disconnect()
+                assert manager._client is None
+            else:
+                manager.reconnect(_make_settings(mqtt_client_id="replacement"))
+                assert manager._client is clients[1]
+            assert callback_done.is_set()
+            assert old_client.loop_joined.is_set()
+            assert old_client._thread is not None and not old_client._thread.is_alive()
+    finally:
+        for client in clients:
+            client.cleanup()
+
+
+@pytest.mark.parametrize("failure", ["constructor", "tls", "credentials", "connect_async", "loop_start"])
+def test_initialization_failure_is_cleaned_and_next_connect_recovers(failure: str) -> None:
+    manager = MqttManager()
+    broken, recovered = MagicMock(), MagicMock()
+    broken.connect_async.return_value = None
+    if failure == "tls":
+        broken.tls_set.side_effect = OSError("synthetic TLS failure")
+    elif failure == "credentials":
+        broken.username_pw_set.side_effect = OSError("synthetic credential failure")
+    elif failure == "connect_async":
+        broken.connect_async.side_effect = OSError("synthetic connect setup failure")
+    elif failure == "loop_start":
+        broken.loop_start.side_effect = OSError("synthetic loop failure")
+
+    settings = _make_settings(
+        mqtt_tls_enabled=failure == "tls",
+        mqtt_username="user" if failure == "credentials" else "",
+        mqtt_password="synthetic",
+    )
+    first = (
+        [RuntimeError("synthetic constructor failure"), recovered]
+        if failure == "constructor"
+        else [broken, recovered]
+    )
+    with patch("app.integrations.mqtt.mqtt.Client", side_effect=first):
+        manager.connect(settings)
+        assert manager._client is None
+        manager.connect(settings)
+
+    assert manager._client is recovered
+    recovered.loop_start.assert_called_once()
+    recovered.connect_async.assert_called_once()
+    if failure in {"connect_async", "loop_start"}:
+        broken.disconnect.assert_called_once()
+        broken.loop_stop.assert_called_once()
+    elif failure in {"tls", "credentials"}:
+        broken.loop_start.assert_not_called()
+
+
+@pytest.mark.parametrize("old_is_failure", [False, True])
+def test_old_connect_success_and_failure_callbacks_cannot_change_replacement(
+    old_is_failure: bool,
+) -> None:
+    manager = MqttManager()
+    old_client, new_client = MagicMock(), MagicMock()
+    with patch("app.integrations.mqtt.mqtt.Client", side_effect=[old_client, new_client]):
+        manager.connect(_make_settings())
+        manager.reconnect(_make_settings(mqtt_client_id="replacement"))
+
+    manager._connected = True
+    old_client.on_connect(
+        old_client, None, None, MagicMock(is_failure=old_is_failure), None
+    )
+    assert manager._client is new_client
+    assert manager.is_connected
+    new_client.subscribe.assert_not_called()
+
+
+def test_old_client_callbacks_cannot_change_replacement_state_or_dispatch() -> None:
+    manager = MqttManager()
+    settings = _make_settings()
+    old_client, new_client = MagicMock(), MagicMock()
+    received: list[bytes] = []
+    manager.subscribe("sensor/state", received.append)
+    with patch("app.integrations.mqtt.mqtt.Client", side_effect=[old_client, new_client]):
+        manager.connect(settings)
+        manager.reconnect(_make_settings(mqtt_client_id="replacement"))
+
+    manager._connected = True
+    failed = MagicMock()
+    failed.is_failure = True
+    old_client.on_disconnect(old_client, None, None, failed, None)
+    old_client.on_message(old_client, None, MagicMock(topic="sensor/state", payload=b"stale"))
+    assert manager.is_connected
+    assert received == []
+
+    new_client.on_message(new_client, None, MagicMock(topic="sensor/state", payload=b"fresh"))
+    assert received == [b"fresh"]
+
+
 def test_deployment_client_id_variants_are_distinct() -> None:
     production_ids = {
         "home-automation",
@@ -155,7 +370,7 @@ def test_connect_sets_credentials_when_username_provided() -> None:
     settings = _make_settings(mqtt_username="user", mqtt_password="s3cr3t")
 
     mock_client = MagicMock()
-    mock_client.connect.return_value = None
+    mock_client.connect_async.return_value = None
 
     with patch("app.integrations.mqtt.mqtt.Client", return_value=mock_client):
         manager.connect(settings)
@@ -170,7 +385,7 @@ def test_connect_skips_credentials_when_username_empty() -> None:
     settings = _make_settings(mqtt_username="", mqtt_password="")
 
     mock_client = MagicMock()
-    mock_client.connect.return_value = None
+    mock_client.connect_async.return_value = None
 
     with patch("app.integrations.mqtt.mqtt.Client", return_value=mock_client):
         manager.connect(settings)
@@ -183,7 +398,7 @@ def test_connect_calls_tls_set_when_tls_enabled() -> None:
     settings = _make_settings(mqtt_tls_enabled=True)
 
     mock_client = MagicMock()
-    mock_client.connect.return_value = None
+    mock_client.connect_async.return_value = None
 
     with patch("app.integrations.mqtt.mqtt.Client", return_value=mock_client):
         manager.connect(settings)
@@ -200,7 +415,7 @@ def test_connect_does_not_raise_on_connection_failure() -> None:
     settings = _make_settings()
 
     mock_client = MagicMock()
-    mock_client.connect.side_effect = OSError("Connection refused")
+    mock_client.connect_async.side_effect = OSError("Connection refused")
 
     with patch("app.integrations.mqtt.mqtt.Client", return_value=mock_client):
         # Must not raise — failures are caught and logged
@@ -221,7 +436,7 @@ def test_disconnect_stops_loop_and_clears_client() -> None:
     settings = _make_settings()
 
     mock_client = MagicMock()
-    mock_client.connect.return_value = None
+    mock_client.connect_async.return_value = None
 
     with patch("app.integrations.mqtt.mqtt.Client", return_value=mock_client):
         manager.connect(settings)
@@ -249,7 +464,7 @@ def test_publish_passes_topic_payload_retain_to_paho() -> None:
     settings = _make_settings()
 
     mock_client = MagicMock()
-    mock_client.connect.return_value = None
+    mock_client.connect_async.return_value = None
 
     with patch("app.integrations.mqtt.mqtt.Client", return_value=mock_client):
         manager.connect(settings)
@@ -306,7 +521,7 @@ def test_reconnect_stops_old_client_and_starts_new_one() -> None:
     manager._connected = True
 
     new_client = MagicMock()
-    new_client.connect.return_value = None
+    new_client.connect_async.return_value = None
 
     with patch("app.integrations.mqtt.mqtt.Client", return_value=new_client):
         manager.reconnect(settings)
@@ -317,11 +532,60 @@ def test_reconnect_stops_old_client_and_starts_new_one() -> None:
 
     # New client must have been connected
     new_client.loop_start.assert_called_once()
-    new_client.connect.assert_called_once_with(
+    new_client.connect_async.assert_called_once_with(
         host="broker.test", port=1883, keepalive=60
     )
 
 
+@pytest.mark.parametrize(
+    "settings",
+    [
+        _make_settings(mqtt_enabled=False),
+        _make_settings(mqtt_broker_host=""),
+    ],
+    ids=["disabled", "empty-host"],
+)
+def test_unconfigured_reconnect_stops_main_client_but_keeps_dsmr_source(settings) -> None:
+    """Changing main MQTT config must not interrupt independent DSMR clients."""
+    manager = MqttManager()
+    main_client = MagicMock()
+    source_client = MagicMock()
+    received: list[bytes] = []
+
+    with patch(
+        "app.integrations.mqtt.mqtt.Client",
+        side_effect=[main_client, source_client],
+    ):
+        manager.connect(_make_settings())
+        assert manager.replace_source(
+            17,
+            host="source.test",
+            port=1883,
+            username="",
+            password="",
+            tls_enabled=False,
+            subscriptions={"meter/17": received.append},
+        )
+
+    manager.reconnect(settings)
+
+    assert manager._client is None
+    main_client.disconnect.assert_called_once()
+    main_client.loop_stop.assert_called_once()
+    assert manager._source_clients[17] is source_client
+    assert manager.source_is_active(17)
+    source_client.disconnect.assert_not_called()
+    source_client.loop_stop.assert_not_called()
+
+    message = MagicMock()
+    message.topic = "meter/17"
+    message.payload = b"reading"
+    source_client.on_message(source_client, None, message)
+    assert received == [b"reading"]
+
+    manager.disconnect()
+
+
 # ---------------------------------------------------------------------------
 # POST /api/config/mqtt/test — session + CSRF guards
 # ---------------------------------------------------------------------------

tests/test_mqtt_scheduler.py

@@ -0,0 +1,68 @@
+"""Offline regression coverage for scheduler-driven MQTT recovery."""
+from __future__ import annotations
+
+from unittest.mock import MagicMock, patch
+
+from app.integrations.mqtt import MqttManager
+from app.main import _run_scheduled_ha_state_publish
+
+
+def test_scheduler_reuses_manager_across_disconnects_then_subscribes_and_publishes() -> None:
+    session = MagicMock()
+    session_local = MagicMock(return_value=session)
+    settings = MagicMock(
+        mqtt_enabled=True,
+        mqtt_broker_host="synthetic-broker",
+        mqtt_broker_port=1883,
+        mqtt_username="",
+        mqtt_password="",
+        mqtt_tls_enabled=False,
+        mqtt_client_id="offline-test",
+    )
+    manager = MqttManager()
+    clients: list[MagicMock] = []
+
+    def make_client(*_args: object, **_kwargs: object) -> MagicMock:
+        client = MagicMock()
+        clients.append(client)
+        return client
+
+    manager.subscribe("homeassistant/status", lambda _payload: None)
+
+    def publish_states(_session: object) -> None:
+        manager.publish("homeassistant/state", b"state", retain=True)
+
+    with (
+        patch("app.main.get_session_local", return_value=session_local),
+        patch("app.main.build_runtime_settings", return_value=settings),
+        patch("app.main.get_settings", return_value=MagicMock()),
+        patch("app.main.mqtt_manager", manager),
+        patch("app.main.publish_discovery") as publish_discovery,
+        patch("app.main.publish_states", side_effect=publish_states),
+        patch("app.integrations.mqtt.mqtt.Client", side_effect=make_client),
+    ):
+        for _ in range(3):
+            _run_scheduled_ha_state_publish()
+            assert len(clients) == 1
+            assert clients[0].loop_start.call_count == 1
+            clients[0].on_disconnect(
+                clients[0], None, None, MagicMock(is_failure=True), None
+            )
+            assert not manager.is_connected
+
+        # A subsequent scheduler turn sees Paho's existing loop retrying; it
+        # must not replace that client. Simulate the successful CONNACK.
+        _run_scheduled_ha_state_publish()
+        assert len(clients) == 1
+        clients[0].on_connect(clients[0], None, None, MagicMock(is_failure=False), None)
+
+        assert manager.is_connected
+        clients[0].subscribe.assert_called_with("homeassistant/status")
+        _run_scheduled_ha_state_publish()
+        assert len(clients) == 1
+        clients[0].publish.assert_called_once_with(
+            "homeassistant/state", payload=b"state", qos=0, retain=True
+        )
+        assert publish_discovery.call_count == 5
+        assert session.close.call_count == 5
+        manager.disconnect()

tests/test_mqtt_subscribe.py

@@ -143,7 +143,7 @@ def test_unsubscribe_unknown_topic_is_noop() -> None:
 # ---------------------------------------------------------------------------
 
 
-def _extract_on_message(manager: MqttManager, settings) -> object:
+def _extract_on_message(manager: MqttManager, settings) -> tuple[object, MagicMock]:
     """Connect with a mocked paho client and return the on_message callback that
     was registered on the client mock."""
     mock_client = MagicMock()
@@ -153,7 +153,7 @@ def _extract_on_message(manager: MqttManager, settings) -> object:
         manager.connect(settings)
 
     # The callback was assigned as: client.on_message = _on_message
-    return mock_client.on_message
+    return mock_client.on_message, mock_client
 
 
 def test_on_message_dispatches_to_registered_handler() -> None:
@@ -168,10 +168,10 @@ def test_on_message_dispatches_to_registered_handler() -> None:
 
     manager.subscribe("dsmr/json", handler)
 
-    on_message = _extract_on_message(manager, settings)
+    on_message, client = _extract_on_message(manager, settings)
 
     msg = _make_mqtt_message("dsmr/json", b'{"id": 1}')
-    on_message(MagicMock(), None, msg)  # simulate paho calling the callback
+    on_message(client, None, msg)  # simulate paho calling the callback
 
     assert received_payloads == [b'{"id": 1}']
 
@@ -183,11 +183,11 @@ def test_on_message_ignores_unknown_topic() -> None:
     handler = MagicMock()
     manager.subscribe("other/topic", handler)
 
-    on_message = _extract_on_message(manager, settings)
+    on_message, client = _extract_on_message(manager, settings)
 
     msg = _make_mqtt_message("unknown/topic", b"data")
     # Must not raise
-    on_message(MagicMock(), None, msg)
+    on_message(client, None, msg)
 
     handler.assert_not_called()
 
@@ -201,11 +201,11 @@ def test_on_message_swallows_handler_exception() -> None:
         raise RuntimeError("handler exploded")
 
     manager.subscribe("dsmr/json", bad_handler)
-    on_message = _extract_on_message(manager, settings)
+    on_message, client = _extract_on_message(manager, settings)
 
     msg = _make_mqtt_message("dsmr/json", b"{}")
     # This must not raise
-    on_message(MagicMock(), None, msg)
+    on_message(client, None, msg)
 
 
 def test_on_message_does_not_crash_on_handler_exception_multiple_calls() -> None:
@@ -221,13 +221,13 @@ def test_on_message_does_not_crash_on_handler_exception_multiple_calls() -> None
             raise ValueError("first call fails")
 
     manager.subscribe("dsmr/json", flaky_handler)
-    on_message = _extract_on_message(manager, settings)
+    on_message, client = _extract_on_message(manager, settings)
 
     msg1 = _make_mqtt_message("dsmr/json", b"first")
     msg2 = _make_mqtt_message("dsmr/json", b"second")
 
-    on_message(MagicMock(), None, msg1)  # should not raise despite exception in handler
+    on_message(client, None, msg1)  # should not raise despite exception in handler
-    on_message(MagicMock(), None, msg2)  # handler called again
+    on_message(client, None, msg2)  # handler called again
 
     assert call_count[0] == 2