diff --git a/.env.example b/.env.example
index 37c887f..cdade95 100644
--- a/.env.example
+++ b/.env.example
@@ -24,6 +24,11 @@ GIT_SSH_KEY_B64=                # (secret) для Docker: тот же ключ 
 GIT_UPLOADS_URL=git@ssh.sourcecraft.dev:rogachevegorushka/tgit-uploads.git
 # GIT_CLONE_DIR=data/uploads   # локальный клон репозитория загрузок (в Docker — volume /data/uploads)
 
+# --- Docker: раздел «Статус» (#14) ---
+# В Compose задан сам: http://docker-proxy:2375. Без него (make run) «Статус» отвечает «Docker недоступен».
+# DOCKER_URL=
+# DOCKER_LABEL=tgit.managed=true
+
 # --- LLM (#17) ---
 LLM_PROVIDER=mock              # mock | openai_compat
 LLM_BASE_URL=
diff --git a/.gitea/workflows/deploy.yml b/.gitea/workflows/deploy.yml
index d3c9f5f..ca898f0 100644
--- a/.gitea/workflows/deploy.yml
+++ b/.gitea/workflows/deploy.yml
@@ -15,7 +15,7 @@ concurrency:
 
 jobs:
   deploy:
-    name: deploy → ${{ github.ref_name == 'main' && 'prod' || 'dev' }}
+    name: deploy  # Gitea doesn't render expressions in job names
     runs-on: ubuntu-latest
     env:
       DEPLOY_ENV: ${{ github.ref_name == 'main' && 'prod' || 'dev' }}
diff --git a/app/bot/routers/commit.py b/app/bot/routers/commit.py
index 3374947..3466f33 100644
--- a/app/bot/routers/commit.py
+++ b/app/bot/routers/commit.py
@@ -99,8 +99,8 @@ class Row:
 
 def human_size(n: int) -> str:
     size = float(n)
-    for unit in ("Б", "КБ", "МБ"):
-        if size < 1024 or unit == "МБ":
+    for unit in ("Б", "КБ", "МБ", "ГБ"):
+        if size < 1024 or unit == "ГБ":
             return f"{size:.0f} {unit}" if unit == "Б" else f"{size:.1f} {unit}"
         size /= 1024
     raise AssertionError("unreachable")
diff --git a/app/bot/routers/common.py b/app/bot/routers/common.py
index 809fc1a..439a03f 100644
--- a/app/bot/routers/common.py
+++ b/app/bot/routers/common.py
@@ -16,7 +16,6 @@ def build_router(texts: Texts, access: AccessService) -> Router:
     router = Router(name="common")
     sections = section_by_button(texts)
     section_text = {
-        Section.STATUS: texts.section.status,
         Section.LOGS: texts.section.logs,
         Section.ALERTS: texts.section.alerts,
     }
diff --git a/app/bot/routers/status.py b/app/bot/routers/status.py
new file mode 100644
index 0000000..c18cf81
--- /dev/null
+++ b/app/bot/routers/status.py
@@ -0,0 +1,216 @@
+"""«🩺 Статус»: managed containers, a card per container, on-demand checks (SPEC S-1…S-4)."""
+
+import logging
+from datetime import datetime
+from enum import StrEnum
+
+from aiogram import F, Router
+from aiogram.exceptions import TelegramBadRequest
+from aiogram.filters.callback_data import CallbackData
+from aiogram.fsm.context import FSMContext
+from aiogram.types import CallbackQuery, InlineKeyboardMarkup, Message
+from aiogram.utils.keyboard import InlineKeyboardBuilder
+
+from app.bot.menu import Nav, NavAction
+from app.bot.routers.commit import human_size
+from app.db.models import utcnow
+from app.runtime.checks import Checker, CheckName, ContainerReport
+from app.runtime.docker import Container, Details, DockerClient, DockerError, Stats
+from app.texts import StatusTexts, Texts
+
+log = logging.getLogger(__name__)
+
+MAX_TEXT = 4000  # Telegram's limit is 4096
+
+
+class StatusAct(StrEnum):
+    LIST = "l"
+    CARD = "c"
+    CHECK = "k"
+
+
+class StatusCb(CallbackData, prefix="s"):
+    a: StatusAct
+    id: str = ""  # 12-char container id prefix: callback data is limited to 64 bytes
+
+
+def duration(t: StatusTexts, seconds: float) -> str:
+    s = int(max(seconds, 0))
+    d, s = divmod(s, 86400)
+    h, s = divmod(s, 3600)
+    m, s = divmod(s, 60)
+    if d:
+        return f"{d} {t.days} {h} {t.hours}"
+    if h:
+        return f"{h} {t.hours} {m} {t.minutes}"
+    if m:
+        return f"{m} {t.minutes}"
+    return f"{s} {t.seconds}"
+
+
+def _clip(text: str) -> str:
+    return text if len(text) <= MAX_TEXT else text[: MAX_TEXT - 1] + "…"
+
+
+def _fmt_time(dt: datetime | None, none: str) -> str:
+    return dt.strftime("%d.%m %H:%M") if dt else none
+
+
+def render_list(texts: Texts, containers: list[Container], now: datetime) -> tuple[str, InlineKeyboardMarkup]:
+    t = texts.status
+    lines = [t.title.format(count=len(containers), time=now.strftime("%H:%M:%S")), ""]
+    if not containers:
+        lines.append(t.empty)
+    for c in containers:
+        state = c.state if c.health is None else f"{c.state}, {c.health}"
+        lines.append(t.line.format(light=c.light.value, name=c.name, state=state))
+    kb = InlineKeyboardBuilder()
+    for c in containers:
+        kb.button(text=f"{c.light.value} {c.name}", callback_data=StatusCb(a=StatusAct.CARD, id=c.short_id))
+    if containers:
+        kb.button(text=t.check_button, callback_data=StatusCb(a=StatusAct.CHECK))
+    kb.button(text=t.refresh, callback_data=StatusCb(a=StatusAct.LIST))
+    kb.button(text=texts.menu.back, callback_data=Nav(action=NavAction.BACK))
+    kb.adjust(1)
+    return _clip("\n".join(lines)), kb.as_markup()
+
+
+def render_card(texts: Texts, d: Details, stats: Stats | None, now: datetime) -> tuple[str, InlineKeyboardMarkup]:
+    t = texts.status
+    running = d.state == "running"
+    uptime = duration(t, (now - d.started_at).total_seconds()) if running and d.started_at else t.none
+    if stats is None:
+        cpu = mem = limit = mem_pct = t.none
+    else:
+        cpu = f"{stats.cpu_pct:.1f}%"
+        mem = human_size(stats.mem_bytes)
+        limit = human_size(stats.mem_limit) if stats.mem_limit else t.no_limit
+        mem_pct = f"{stats.mem_pct:.0f}%"
+    text = t.card.format(
+        light=d.light.value,
+        name=d.name,
+        service=d.service or t.none,
+        image=d.image or t.none,
+        state=d.state if running else f"{d.state} (exit {d.exit_code}{', OOM' if d.oom_killed else ''})",
+        health=d.health or t.none,
+        uptime=uptime,
+        restarts=d.restart_count,
+        cpu=cpu,
+        mem=mem,
+        limit=limit,
+        mem_pct=mem_pct,
+        sha=(d.sha or t.none)[:12],
+        deployed=_fmt_time(d.deployed_at, t.none),
+    )
+    kb = InlineKeyboardBuilder()
+    kb.button(text=t.check_button, callback_data=StatusCb(a=StatusAct.CHECK, id=d.id[:12]))
+    kb.button(text=t.refresh, callback_data=StatusCb(a=StatusAct.CARD, id=d.id[:12]))
+    kb.button(text=t.to_list, callback_data=StatusCb(a=StatusAct.LIST))
+    kb.adjust(2, 1)
+    return text, kb.as_markup()
+
+
+def render_report(
+    texts: Texts, reports: list[ContainerReport], now: datetime, back_id: str = ""
+) -> tuple[str, InlineKeyboardMarkup]:
+    """back_id: the report was run from a card — offer the way back to it."""
+    t = texts.status
+    titles = {
+        CheckName.RUNNING: t.check_running,
+        CheckName.HEALTH: t.check_health,
+        CheckName.RESTARTS: t.check_restarts,
+        CheckName.CPU: t.check_cpu,
+        CheckName.MEM: t.check_mem,
+        CheckName.LOG_ERRORS: t.check_log_errors,
+        CheckName.HTTP: t.check_http,
+    }
+    ok = sum(r.ok for r in reports)
+    lines = [t.report_title.format(ok=ok, total=len(reports), time=now.strftime("%H:%M:%S"))]
+    for report in reports:
+        lines.append("")
+        lines.append(t.report_container.format(light="✅" if report.ok else "❌", name=report.details.name))
+        for r in report.results:
+            detail = f" · {r.detail}" if r.detail else ""
+            lines.append(t.report_line.format(verdict=r.verdict.value, title=titles[r.name], detail=detail))
+    kb = InlineKeyboardBuilder()
+    kb.button(text=t.refresh, callback_data=StatusCb(a=StatusAct.CHECK, id=back_id))
+    if back_id:
+        kb.button(text=t.to_card, callback_data=StatusCb(a=StatusAct.CARD, id=back_id))
+    kb.button(text=t.to_list, callback_data=StatusCb(a=StatusAct.LIST))
+    kb.adjust(1)
+    return _clip("\n".join(lines)), kb.as_markup()
+
+
+def build_router(texts: Texts, docker: DockerClient | None, checker: Checker | None) -> Router:
+    router = Router(name="status")
+    t = texts.status
+
+    async def list_screen() -> tuple[str, InlineKeyboardMarkup]:
+        if docker is None:
+            raise DockerError("docker is not configured (DOCKER_URL)")
+        return render_list(texts, await docker.containers(), utcnow())
+
+    async def card_screen(short_id: str) -> tuple[str, InlineKeyboardMarkup]:
+        if docker is None:
+            raise DockerError("docker is not configured (DOCKER_URL)")
+        cid = await docker.resolve(short_id)
+        details = await docker.inspect(cid)
+        stats = None
+        if details.state == "running":
+            try:
+                stats = await docker.stats(cid)
+            except DockerError:
+                log.warning("stats %s unavailable", short_id)
+        return render_card(texts, details, stats, utcnow())
+
+    @router.message(F.text == texts.menu.status)
+    async def open_status(message: Message, state: FSMContext) -> None:
+        await state.clear()
+        try:
+            text, kb = await list_screen()
+        except DockerError as e:
+            log.warning("status: %s", e)
+            await message.answer(t.unavailable)
+            return
+        await message.answer(text, reply_markup=kb)
+
+    @router.callback_query(StatusCb.filter())
+    async def on_action(query: CallbackQuery, callback_data: StatusCb) -> None:
+        if not isinstance(query.message, Message):
+            await query.answer()
+            return
+        msg = query.message
+        try:
+            match callback_data.a:
+                case StatusAct.LIST:
+                    text, kb = await list_screen()
+                case StatusAct.CARD:
+                    text, kb = await card_screen(callback_data.id)
+                case StatusAct.CHECK:
+                    if docker is None or checker is None:
+                        raise DockerError("docker is not configured (DOCKER_URL)")
+                    await query.answer(t.checking)
+                    if callback_data.id:
+                        reports = [await checker.check(await docker.resolve(callback_data.id))]
+                    else:
+                        reports = await checker.check_all()
+                    text, kb = render_report(texts, reports, utcnow(), callback_data.id)
+                    await _edit(msg, text, kb)
+                    return
+        except DockerError as e:
+            log.warning("status: %s", e)
+            await query.answer(t.unavailable, show_alert=True)
+            return
+        await _edit(msg, text, kb)
+        await query.answer()
+
+    return router
+
+
+async def _edit(msg: Message, text: str, kb: InlineKeyboardMarkup) -> None:
+    # «🔄 Обновить» with nothing changed: Telegram rejects an identical edit — not an error for the user
+    try:
+        await msg.edit_text(text, reply_markup=kb)
+    except TelegramBadRequest as e:
+        if "message is not modified" not in str(e):
+            raise
diff --git a/app/config.py b/app/config.py
index 15f52b4..35122bd 100644
--- a/app/config.py
+++ b/app/config.py
@@ -84,6 +84,18 @@ class GitSettings(BaseSettings):
     timeout: float = Field(default=60.0, gt=0)
 
 
+class DockerSettings(BaseSettings):
+    model_config = SettingsConfigDict(**_ENV, env_prefix="DOCKER_")
+
+    # docker-socket-proxy (GET only, ADR-006); empty — the «Статус» section reports Docker as unavailable
+    url: str = ""
+    # Only containers with this label are shown: the host runs other projects too
+    label: str = "tgit.managed=true"
+    timeout: float = Field(default=10.0, gt=0)
+    snapshot_interval: float = Field(default=15.0, gt=0)
+    max_log_bytes: int = Field(default=5 * 1024 * 1024, gt=0)
+
+
 class RuntimeSettings(BaseSettings):
     model_config = _ENV
 
@@ -105,4 +117,5 @@ class Settings(BaseSettings):
     llm: LLMSettings = Field(default_factory=LLMSettings)
     sourcecraft: SourceCraftSettings = Field(default_factory=SourceCraftSettings)
     git: GitSettings = Field(default_factory=GitSettings)
+    docker: DockerSettings = Field(default_factory=DockerSettings)
     runtime: RuntimeSettings = Field(default_factory=RuntimeSettings)
diff --git a/app/main.py b/app/main.py
index 4b47d8c..352714d 100644
--- a/app/main.py
+++ b/app/main.py
@@ -11,7 +11,7 @@ from app import __version__
 from app.access.service import AccessService
 from app.bot.fsm import make_storage
 from app.bot.middlewares.access import AccessMiddleware
-from app.bot.routers import commit, common, members
+from app.bot.routers import commit, common, members, status
 from app.config import Settings
 from app.db.maintenance import cleanup_loop
 from app.db.migrate import upgrade
@@ -21,13 +21,22 @@ from app.logs_setup import setup_logging
 from app.repo.drafts import DraftService
 from app.repo.git import UploadsRepo
 from app.repo.publisher import Publisher
+from app.runtime.checks import Checker, load_checks
+from app.runtime.docker import DockerClient
+from app.runtime.snapshots import SnapshotStore, snapshot_loop
 from app.texts import Texts, load_texts
 
 log = logging.getLogger("tgit")
 
 
 def build_dispatcher(
-    texts: Texts, sessions: SessionMaker, access: AccessService, repo: UploadsRepo, commit_url_template: str = ""
+    texts: Texts,
+    sessions: SessionMaker,
+    access: AccessService,
+    repo: UploadsRepo,
+    commit_url_template: str = "",
+    docker: DockerClient | None = None,
+    checker: Checker | None = None,
 ) -> Dispatcher:
     dp = Dispatcher(storage=make_storage(sessions))
     gate = AccessMiddleware(access, texts)
@@ -38,31 +47,42 @@ def build_dispatcher(
     dp.include_router(
         commit.build_router(texts, repo, DraftService(sessions), Publisher(repo, sessions), commit_url_template)
     )
+    dp.include_router(status.build_router(texts, docker, checker))
     dp.include_router(common.build_router(texts, access))
     return dp
 
 
 async def run(settings: Settings) -> None:
     texts = load_texts(settings.runtime.config_dir)
+    checks_cfg = load_checks(settings.runtime.config_dir)
     engine = make_engine(settings.database.url)
     await upgrade(engine)
     sessions = make_sessionmaker(engine)
     access = AccessService(sessions, settings.access)
     await access.bootstrap_admins()
-    dp = build_dispatcher(texts, sessions, access, UploadsRepo(settings.git), settings.git.commit_url_template)
+    # No DOCKER_URL (e.g. `make run` without Docker): «Статус» answers «Docker недоступен», the rest works
+    docker = DockerClient(settings.docker) if settings.docker.url else None
+    store = SnapshotStore(sessions)
+    checker = Checker(docker, store, checks_cfg) if docker else None
+    dp = build_dispatcher(
+        texts, sessions, access, UploadsRepo(settings.git), settings.git.commit_url_template, docker, checker
+    )
     rt = settings.runtime
     background = [
         asyncio.create_task(heartbeat(rt.heartbeat_file, rt.heartbeat_interval)),
         asyncio.create_task(cleanup_loop(sessions)),
     ]
+    if docker:
+        background.append(asyncio.create_task(snapshot_loop(docker, store, settings.docker.snapshot_interval)))
     proxy = settings.telegram.proxy_url
     session = AiohttpSession(proxy=proxy.get_secret_value()) if proxy else None
     bot = Bot(settings.telegram.bot_token.get_secret_value(), session=session)
     log.info(
-        "tgit %s starting, %d bootstrap admin(s), telegram %s",
+        "tgit %s starting, %d bootstrap admin(s), telegram %s, docker %s",
         __version__,
         len(settings.access.admin_ids),
         "via proxy" if proxy else "direct",
+        "on" if docker else "off",
     )
     try:
         await dp.start_polling(bot, handle_signals=True)
@@ -73,6 +93,10 @@ async def run(settings: Settings) -> None:
             with contextlib.suppress(asyncio.CancelledError):
                 await task
         await bot.session.close()
+        if docker:
+            await docker.aclose()
+        if checker:
+            await checker.aclose()
         await engine.dispose()
         log.info("tgit stopped")
 
diff --git a/app/runtime/__init__.py b/app/runtime/__init__.py
new file mode 100644
index 0000000..2d28b56
--- /dev/null
+++ b/app/runtime/__init__.py
@@ -0,0 +1 @@
+"""Containers: read-only Docker API via docker-socket-proxy, checks and snapshots (ARCHITECTURE §2.6)."""
diff --git a/app/runtime/checks.py b/app/runtime/checks.py
new file mode 100644
index 0000000..fcb6b8b
--- /dev/null
+++ b/app/runtime/checks.py
@@ -0,0 +1,223 @@
+"""«🩺 Запустить проверки» (SPEC S-3): independent checks per container, each with its own timeout.
+
+A check that raises or hangs becomes ❌ with the reason; the others still run and the report is always complete.
+Details are short and language-neutral (numbers, codes); the titles live in `config/texts.yaml`.
+"""
+
+import asyncio
+from collections.abc import Awaitable, Callable
+from dataclasses import dataclass
+from datetime import datetime, timedelta
+from enum import StrEnum
+from pathlib import Path
+
+import httpx
+import regex
+import yaml
+from pydantic import BaseModel, ConfigDict, Field, field_validator
+
+from app.db.models import utcnow
+from app.runtime.docker import Details, DockerClient, Stats
+from app.runtime.snapshots import SnapshotStore
+
+REGEX_TIMEOUT = 1.0  # seconds per log line: a pathological pattern can't stall the bot
+
+
+class ChecksConfig(BaseModel):
+    model_config = ConfigDict(extra="forbid", frozen=True)
+
+    window: int = Field(default=300, gt=0)
+    cpu_pct: float = Field(default=90, gt=0)
+    mem_pct: float = Field(default=90, gt=0, le=100)
+    error_pattern: str
+    http_timeout: float = Field(default=5, gt=0)
+    check_timeout: float = Field(default=15, gt=0)
+
+    @field_validator("error_pattern")
+    @classmethod
+    def _compiles(cls, value: str) -> str:
+        try:
+            regex.compile(value)
+        except regex.error as e:  # not a ValueError: pydantic wouldn't turn it into a validation error
+            raise ValueError(f"error_pattern: {e}") from e
+        return value
+
+
+def load_checks(config_dir: Path) -> ChecksConfig:
+    with (config_dir / "checks.yaml").open(encoding="utf-8") as f:
+        return ChecksConfig.model_validate(yaml.safe_load(f))
+
+
+class CheckName(StrEnum):
+    RUNNING = "running"
+    HEALTH = "health"
+    RESTARTS = "restarts"
+    CPU = "cpu"
+    MEM = "mem"
+    LOG_ERRORS = "log_errors"
+    HTTP = "http"
+
+
+class Verdict(StrEnum):
+    OK = "✅"
+    FAIL = "❌"
+    SKIP = "➖"  # not applicable: no healthcheck, not running, no health_url
+
+
+@dataclass(frozen=True)
+class CheckResult:
+    name: CheckName
+    verdict: Verdict
+    detail: str = ""
+
+
+@dataclass(frozen=True)
+class ContainerReport:
+    details: Details
+    results: list[CheckResult]
+
+    @property
+    def ok(self) -> bool:
+        return all(r.verdict is not Verdict.FAIL for r in self.results)
+
+
+@dataclass(frozen=True)
+class Context:
+    details: Details
+    docker: DockerClient
+    store: SnapshotStore
+    cfg: ChecksConfig
+    http: httpx.AsyncClient
+    now: datetime
+    stats: Stats | None  # None when not running
+
+    @property
+    def since(self) -> datetime:
+        return self.now - timedelta(seconds=self.cfg.window)
+
+
+async def check_running(ctx: Context) -> CheckResult:
+    d = ctx.details
+    if d.state == "running":
+        return CheckResult(CheckName.RUNNING, Verdict.OK, d.state)
+    detail = f"{d.state}, exit {d.exit_code}" + (", OOM" if d.oom_killed else "")
+    return CheckResult(CheckName.RUNNING, Verdict.FAIL, detail)
+
+
+async def check_health(ctx: Context) -> CheckResult:
+    health = ctx.details.health
+    if health is None:
+        return CheckResult(CheckName.HEALTH, Verdict.SKIP, "no healthcheck")
+    return CheckResult(CheckName.HEALTH, Verdict.OK if health == "healthy" else Verdict.FAIL, health)
+
+
+async def check_restarts(ctx: Context) -> CheckResult:
+    now_count = ctx.details.restart_count
+    before = await ctx.store.oldest_since(ctx.details.name, ctx.since)
+    if before is None:
+        return CheckResult(CheckName.RESTARTS, Verdict.SKIP, f"{now_count}, no history")
+    grown = now_count - before.restart_count
+    if grown > 0:
+        return CheckResult(CheckName.RESTARTS, Verdict.FAIL, f"{before.restart_count} → {now_count}")
+    return CheckResult(CheckName.RESTARTS, Verdict.OK, str(now_count))
+
+
+async def check_cpu(ctx: Context) -> CheckResult:
+    if ctx.stats is None:
+        return CheckResult(CheckName.CPU, Verdict.SKIP)
+    pct = ctx.stats.cpu_pct
+    verdict = Verdict.OK if pct < ctx.cfg.cpu_pct else Verdict.FAIL
+    return CheckResult(CheckName.CPU, verdict, f"{pct:.1f}% / {ctx.cfg.cpu_pct:g}%")
+
+
+async def check_mem(ctx: Context) -> CheckResult:
+    if ctx.stats is None:
+        return CheckResult(CheckName.MEM, Verdict.SKIP)
+    pct = ctx.stats.mem_pct
+    verdict = Verdict.OK if pct < ctx.cfg.mem_pct else Verdict.FAIL
+    return CheckResult(CheckName.MEM, verdict, f"{pct:.1f}% / {ctx.cfg.mem_pct:g}%")
+
+
+def count_errors(text: str, pattern: str) -> tuple[int, str]:
+    """Matching lines and the first of them (trimmed)."""
+    compiled = regex.compile(pattern)
+    hits, first = 0, ""
+    for line in text.splitlines():
+        try:
+            matched = compiled.search(line, timeout=REGEX_TIMEOUT) is not None
+        except TimeoutError:
+            matched = False
+        if matched:
+            hits += 1
+            first = first or line.strip()[:120]
+    return hits, first
+
+
+async def check_log_errors(ctx: Context) -> CheckResult:
+    text = await ctx.docker.logs(ctx.details.id, since=ctx.since)
+    hits, first = await asyncio.to_thread(count_errors, text, ctx.cfg.error_pattern)
+    if hits:
+        return CheckResult(CheckName.LOG_ERRORS, Verdict.FAIL, f"{hits}: {first}")
+    return CheckResult(CheckName.LOG_ERRORS, Verdict.OK, "0")
+
+
+async def check_http(ctx: Context) -> CheckResult:
+    url = ctx.details.health_url
+    if url is None:
+        return CheckResult(CheckName.HTTP, Verdict.SKIP, "no health_url")
+    try:
+        response = await ctx.http.get(url, timeout=ctx.cfg.http_timeout)
+    except httpx.HTTPError as e:
+        return CheckResult(CheckName.HTTP, Verdict.FAIL, type(e).__name__)
+    ok = response.status_code < 400
+    return CheckResult(CheckName.HTTP, Verdict.OK if ok else Verdict.FAIL, f"HTTP {response.status_code}")
+
+
+Check = Callable[[Context], Awaitable[CheckResult]]
+CHECKS: list[tuple[CheckName, Check]] = [
+    (CheckName.RUNNING, check_running),
+    (CheckName.HEALTH, check_health),
+    (CheckName.RESTARTS, check_restarts),
+    (CheckName.CPU, check_cpu),
+    (CheckName.MEM, check_mem),
+    (CheckName.LOG_ERRORS, check_log_errors),
+    (CheckName.HTTP, check_http),
+]
+
+
+async def _guarded(name: CheckName, check: Check, ctx: Context) -> CheckResult:
+    try:
+        return await asyncio.wait_for(check(ctx), timeout=ctx.cfg.check_timeout)
+    except TimeoutError:
+        return CheckResult(name, Verdict.FAIL, "timeout")
+    except Exception as e:  # one broken check must not spoil the report
+        return CheckResult(name, Verdict.FAIL, f"{type(e).__name__}: {str(e)[:80]}")
+
+
+class Checker:
+    def __init__(
+        self, docker: DockerClient, store: SnapshotStore, cfg: ChecksConfig, http: httpx.AsyncClient | None = None
+    ) -> None:
+        self._docker = docker
+        self._store = store
+        self._cfg = cfg
+        self._http = http or httpx.AsyncClient(follow_redirects=False)
+
+    async def check(self, container_id: str, now: datetime | None = None) -> ContainerReport:
+        details = await self._docker.inspect(container_id)
+        stats = None
+        if details.state == "running":
+            try:
+                stats = await asyncio.wait_for(self._docker.stats(container_id), timeout=self._cfg.check_timeout)
+            except Exception:  # cpu/mem become ➖, the rest still runs
+                stats = None
+        ctx = Context(details, self._docker, self._store, self._cfg, self._http, now or utcnow(), stats)
+        results = await asyncio.gather(*(_guarded(name, fn, ctx) for name, fn in CHECKS))
+        return ContainerReport(details, list(results))
+
+    async def check_all(self, now: datetime | None = None) -> list[ContainerReport]:
+        containers = await self._docker.containers()
+        return list(await asyncio.gather(*(self.check(c.id, now) for c in containers)))
+
+    async def aclose(self) -> None:
+        await self._http.aclose()
diff --git a/app/runtime/docker.py b/app/runtime/docker.py
new file mode 100644
index 0000000..3fcaa7b
--- /dev/null
+++ b/app/runtime/docker.py
@@ -0,0 +1,283 @@
+"""Read-only Docker Engine API client. The bot talks to docker-socket-proxy (GET only), never to the socket itself.
+
+Only containers carrying the managed label are visible: the host also runs other projects (Vobot, meditron),
+and an id outside the list is refused before any request goes out.
+"""
+
+import json
+import re
+import struct
+from dataclasses import dataclass
+from datetime import UTC, datetime
+from enum import StrEnum
+from types import TracebackType
+from typing import Any, Self
+
+import httpx
+
+from app.config import DockerSettings
+
+SHA_LABEL = "tgit.sha"
+DEPLOYED_LABEL = "tgit.deployed_at"
+HEALTH_URL_LABEL = "tgit.health_url"
+SERVICE_LABEL = "com.docker.compose.service"
+
+_FRACTION = re.compile(r"(\.\d{6})\d+")  # Docker gives nanoseconds, datetime takes microseconds
+
+
+class DockerError(Exception):
+    pass
+
+
+class Light(StrEnum):
+    """S-1: 🟢 healthy / 🟡 starting / 🔴 unhealthy or crashed / ⚪ stopped."""
+
+    GREEN = "🟢"
+    YELLOW = "🟡"
+    RED = "🔴"
+    WHITE = "⚪"
+
+
+def parse_time(value: str | None) -> datetime | None:
+    if not value or value.startswith("0001-"):  # Docker's zero time: never started / no deploy label
+        return None
+    try:
+        return datetime.fromisoformat(_FRACTION.sub(r"\1", value).replace("Z", "+00:00")).astimezone(UTC)
+    except ValueError:
+        return None
+
+
+def light(state: str, health: str | None, exit_code: int = 0) -> Light:
+    if state == "running":
+        if health == "unhealthy":
+            return Light.RED
+        if health == "starting":
+            return Light.YELLOW
+        return Light.GREEN
+    if state in ("restarting", "dead") or (state == "exited" and exit_code != 0):
+        return Light.RED
+    if state == "created":
+        return Light.YELLOW
+    return Light.WHITE
+
+
+@dataclass(frozen=True)
+class Container:
+    """A list entry (GET /containers/json): enough for the overview, no extra request per container."""
+
+    id: str
+    name: str
+    service: str
+    image: str
+    state: str  # created | running | paused | restarting | removing | exited | dead
+    health: str | None  # starting | healthy | unhealthy | None — no healthcheck
+    exit_code: int
+    labels: dict[str, str]
+
+    @property
+    def short_id(self) -> str:
+        return self.id[:12]
+
+    @property
+    def light(self) -> Light:
+        return light(self.state, self.health, self.exit_code)
+
+
+_HEALTH_IN_STATUS = re.compile(r"\((healthy|unhealthy|health: starting)\)")
+_EXIT_IN_STATUS = re.compile(r"^Exited \((-?\d+)\)")
+
+
+def _health_from_status(status: str) -> str | None:
+    """`Up 2 hours (healthy)` → healthy. The list endpoint has no structured health field."""
+    m = _HEALTH_IN_STATUS.search(status)
+    if m is None:
+        return None
+    return "starting" if m.group(1) == "health: starting" else m.group(1)
+
+
+@dataclass(frozen=True)
+class Details:
+    """GET /containers/{id}/json — the card (S-2) and most checks."""
+
+    id: str
+    name: str
+    service: str
+    image: str
+    state: str
+    health: str | None
+    exit_code: int
+    restart_count: int
+    started_at: datetime | None
+    finished_at: datetime | None
+    oom_killed: bool
+    labels: dict[str, str]
+
+    @property
+    def light(self) -> Light:
+        return light(self.state, self.health, self.exit_code)
+
+    @property
+    def sha(self) -> str | None:
+        return self.labels.get(SHA_LABEL) or None
+
+    @property
+    def deployed_at(self) -> datetime | None:
+        return parse_time(self.labels.get(DEPLOYED_LABEL))
+
+    @property
+    def health_url(self) -> str | None:
+        return self.labels.get(HEALTH_URL_LABEL) or None
+
+
+@dataclass(frozen=True)
+class Stats:
+    cpu_pct: float  # of one CPU × online CPUs, as `docker stats` shows it
+    mem_bytes: int
+    mem_limit: int  # the cgroup limit; the host's RAM when the container has none
+
+    @property
+    def mem_pct(self) -> float:
+        return 100.0 * self.mem_bytes / self.mem_limit if self.mem_limit else 0.0
+
+
+def parse_stats(data: dict[str, Any]) -> Stats:
+    cpu, pre = data.get("cpu_stats") or {}, data.get("precpu_stats") or {}
+    cpu_delta = (cpu.get("cpu_usage") or {}).get("total_usage", 0) - (pre.get("cpu_usage") or {}).get("total_usage", 0)
+    sys_delta = cpu.get("system_cpu_usage", 0) - pre.get("system_cpu_usage", 0)
+    cpus = cpu.get("online_cpus") or len((cpu.get("cpu_usage") or {}).get("percpu_usage") or []) or 1
+    cpu_pct = 100.0 * cpu_delta / sys_delta * cpus if cpu_delta > 0 and sys_delta > 0 else 0.0
+    mem = data.get("memory_stats") or {}
+    extra = mem.get("stats") or {}
+    # Page cache isn't pressure: cgroup v2 reports inactive_file, v1 total_inactive_file (docker CLI does the same)
+    cache = extra.get("inactive_file", extra.get("total_inactive_file", 0))
+    usage = max(int(mem.get("usage", 0)) - int(cache), 0)
+    return Stats(cpu_pct=round(cpu_pct, 1), mem_bytes=usage, mem_limit=int(mem.get("limit", 0)))
+
+
+def demux_logs(raw: bytes) -> str:
+    """Split Docker's multiplexed stream (8-byte header per frame) — containers without a TTY send it this way."""
+    if raw[:1] not in (b"\x00", b"\x01", b"\x02") or len(raw) < 8 or raw[1:4] != b"\x00\x00\x00":
+        return raw.decode(errors="replace")  # TTY container: plain bytes
+    out: list[bytes] = []
+    pos = 0
+    while pos + 8 <= len(raw):
+        (size,) = struct.unpack(">I", raw[pos + 4 : pos + 8])
+        out.append(raw[pos + 8 : pos + 8 + size])
+        pos += 8 + size
+    return b"".join(out).decode(errors="replace")
+
+
+class DockerClient:
+    def __init__(self, settings: DockerSettings, transport: httpx.AsyncBaseTransport | None = None) -> None:
+        self._s = settings
+        self._http = httpx.AsyncClient(base_url=settings.url, timeout=settings.timeout, transport=transport)
+        self._known: set[str] = set()  # ids from the last listing: the only ones card/logs/stats may touch
+
+    async def __aenter__(self) -> Self:
+        return self
+
+    async def __aexit__(
+        self, exc_type: type[BaseException] | None, exc: BaseException | None, tb: TracebackType | None
+    ) -> None:
+        await self.aclose()
+
+    async def aclose(self) -> None:
+        await self._http.aclose()
+
+    async def containers(self) -> list[Container]:
+        """All managed containers, stopped ones too, sorted by name."""
+        filters = json.dumps({"label": [self._s.label]})
+        data = await self._get_json("/containers/json", params={"all": "1", "filters": filters})
+        result = []
+        for c in data:
+            labels = c.get("Labels") or {}
+            names = c.get("Names") or [c["Id"][:12]]
+            result.append(
+                Container(
+                    id=c["Id"],
+                    name=names[0].lstrip("/"),
+                    service=labels.get(SERVICE_LABEL, ""),
+                    image=c.get("Image", ""),
+                    state=c.get("State", ""),
+                    health=_health_from_status(c.get("Status", "")),
+                    exit_code=int(m.group(1)) if (m := _EXIT_IN_STATUS.match(c.get("Status", ""))) else 0,
+                    labels=labels,
+                )
+            )
+        self._known = {c.id for c in result}
+        return sorted(result, key=lambda c: c.name)
+
+    async def resolve(self, short_id: str) -> str:
+        """Full id of a managed container by its 12-char prefix (callback data carries only that)."""
+        if not self._known:
+            await self.containers()
+        for full in self._known:
+            if full.startswith(short_id):
+                return full
+        await self.containers()  # maybe recreated since the last listing
+        for full in self._known:
+            if full.startswith(short_id):
+                return full
+        raise DockerError(f"container {short_id} is not managed by tgit")
+
+    async def inspect(self, container_id: str) -> Details:
+        self._guard(container_id)
+        d = await self._get_json(f"/containers/{container_id}/json")
+        state = d.get("State") or {}
+        labels = (d.get("Config") or {}).get("Labels") or {}
+        return Details(
+            id=d["Id"],
+            name=d.get("Name", "").lstrip("/"),
+            service=labels.get(SERVICE_LABEL, ""),
+            image=(d.get("Config") or {}).get("Image", ""),
+            state=state.get("Status", ""),
+            health=(state.get("Health") or {}).get("Status"),
+            exit_code=int(state.get("ExitCode", 0)),
+            restart_count=int(d.get("RestartCount", 0)),
+            started_at=parse_time(state.get("StartedAt")),
+            finished_at=parse_time(state.get("FinishedAt")),
+            oom_killed=bool(state.get("OOMKilled", False)),
+            labels=labels,
+        )
+
+    async def stats(self, container_id: str) -> Stats:
+        """One sample with a previous one to diff against (stream=false waits ~1 s for it)."""
+        self._guard(container_id)
+        return parse_stats(await self._get_json(f"/containers/{container_id}/stats", params={"stream": "false"}))
+
+    async def logs(self, container_id: str, since: datetime | None = None, tail: int | None = None) -> str:
+        self._guard(container_id)
+        params = {"stdout": "1", "stderr": "1"}
+        if since is not None:
+            params["since"] = str(int(since.timestamp()))
+        if tail is not None:
+            params["tail"] = str(tail)
+        response = await self._request(f"/containers/{container_id}/logs", params)
+        raw = response.content[: self._s.max_log_bytes]
+        return demux_logs(raw)
+
+    async def ping(self) -> bool:
+        try:
+            return (await self._request("/_ping", {})).text == "OK"
+        except DockerError:
+            return False
+
+    def _guard(self, container_id: str) -> None:
+        if container_id not in self._known:
+            raise DockerError(f"container {container_id[:12]} is not managed by tgit")
+
+    async def _get_json(self, path: str, params: dict[str, str] | None = None) -> Any:
+        response = await self._request(path, params or {})
+        try:
+            return response.json()
+        except ValueError as e:
+            raise DockerError(f"{path}: not JSON") from e
+
+    async def _request(self, path: str, params: dict[str, str]) -> httpx.Response:
+        try:
+            response = await self._http.get(path, params=params)
+        except httpx.TransportError as e:  # timeouts included
+            raise DockerError(f"docker unreachable: {type(e).__name__}") from e
+        if response.status_code >= 400:
+            raise DockerError(f"{path}: HTTP {response.status_code} {response.text[:200]}")
+        return response
diff --git a/app/runtime/snapshots.py b/app/runtime/snapshots.py
new file mode 100644
index 0000000..509aa7d
--- /dev/null
+++ b/app/runtime/snapshots.py
@@ -0,0 +1,87 @@
+"""Every 15 s: restart count, CPU and RAM of each running managed container → `container_snapshots`.
+
+The history answers «are restarts growing over the last 5 minutes» (S-3) and feeds alerts (#15).
+Old rows are removed by `app.db.maintenance`.
+"""
+
+import asyncio
+import logging
+from datetime import datetime
+
+from sqlalchemy import select
+
+from app.db.models import ContainerSnapshot, utcnow
+from app.db.session import SessionMaker
+from app.runtime.docker import DockerClient, DockerError
+
+log = logging.getLogger(__name__)
+
+
+class SnapshotStore:
+    def __init__(self, sessions: SessionMaker) -> None:
+        self._sessions = sessions
+
+    async def add(self, rows: list[ContainerSnapshot]) -> None:
+        if rows:
+            async with self._sessions.begin() as session:
+                session.add_all(rows)
+
+    async def oldest_since(self, container: str, since: datetime) -> ContainerSnapshot | None:
+        async with self._sessions() as session:
+            return await session.scalar(
+                select(ContainerSnapshot)
+                .where(ContainerSnapshot.container == container, ContainerSnapshot.at >= since)
+                .order_by(ContainerSnapshot.at)
+                .limit(1)
+            )
+
+    async def latest(self, container: str) -> ContainerSnapshot | None:
+        async with self._sessions() as session:
+            return await session.scalar(
+                select(ContainerSnapshot)
+                .where(ContainerSnapshot.container == container)
+                .order_by(ContainerSnapshot.at.desc())
+                .limit(1)
+            )
+
+
+async def _snapshot(docker: DockerClient, container_id: str, at: datetime) -> ContainerSnapshot | None:
+    try:
+        details, stats = await asyncio.gather(docker.inspect(container_id), docker.stats(container_id))
+    except DockerError as e:
+        log.warning("snapshot %s: %s", container_id[:12], e)
+        return None
+    return ContainerSnapshot(
+        container=details.name,
+        at=at,
+        restart_count=details.restart_count,
+        cpu_pct=stats.cpu_pct,
+        mem_pct=round(stats.mem_pct, 1),
+        health=details.health,
+    )
+
+
+async def collect_once(docker: DockerClient, store: SnapshotStore, now: datetime | None = None) -> int:
+    at = now or utcnow()
+    running = [c for c in await docker.containers() if c.state == "running"]
+    rows = await asyncio.gather(*(_snapshot(docker, c.id, at) for c in running))
+    snapshots = [r for r in rows if r is not None]
+    await store.add(snapshots)
+    return len(snapshots)
+
+
+async def snapshot_loop(docker: DockerClient, store: SnapshotStore, interval: float) -> None:
+    failing = False
+    while True:
+        try:
+            await collect_once(docker, store)
+            if failing:
+                log.info("snapshots: docker reachable again")
+            failing = False
+        except DockerError as e:
+            if not failing:  # one line per outage, not one every 15 s
+                log.warning("snapshots: %s", e)
+            failing = True
+        except Exception:  # a broken round must not kill the bot
+            log.exception("snapshots failed")
+        await asyncio.sleep(interval)
diff --git a/app/texts.py b/app/texts.py
index f6ad02d..fd30dbc 100644
--- a/app/texts.py
+++ b/app/texts.py
@@ -33,7 +33,6 @@ class HelpTexts(_Strict):
 
 class SectionTexts(_Strict):
     commit: str
-    status: str
     logs: str
     alerts: str
     members: str
@@ -124,6 +123,35 @@ class CommitTexts(_Strict):
     push_failed: str
 
 
+class StatusTexts(_Strict):
+    title: str
+    line: str
+    empty: str
+    unavailable: str
+    card: str
+    none: str
+    no_limit: str
+    check_button: str
+    refresh: str
+    to_list: str
+    to_card: str
+    checking: str
+    report_title: str
+    report_container: str
+    report_line: str
+    check_running: str
+    check_health: str
+    check_restarts: str
+    check_cpu: str
+    check_mem: str
+    check_log_errors: str
+    check_http: str
+    days: str
+    hours: str
+    minutes: str
+    seconds: str
+
+
 class Texts(_Strict):
     menu: MenuTexts
     start: StartTexts
@@ -131,6 +159,7 @@ class Texts(_Strict):
     section: SectionTexts
     members: MembersTexts
     commit: CommitTexts
+    status: StatusTexts
 
 
 def load_texts(config_dir: Path) -> Texts:
diff --git a/config/checks.yaml b/config/checks.yaml
new file mode 100644
index 0000000..4dd66e7
--- /dev/null
+++ b/config/checks.yaml
@@ -0,0 +1,13 @@
+# Проверки раздела «🩺 Статус» (SPEC S-3). Читает app/runtime/checks.py; неизвестный ключ — ошибка при старте.
+
+# Окно для «рестарты не растут» и «нет ошибок в логе», секунды
+window: 300
+# Пороги, % от лимита контейнера (CPU — от числа доступных ядер × 100)
+cpu_pct: 90
+mem_pct: 90
+# Строка лога считается ошибкой, если совпала с шаблоном (синтаксис модуля regex)
+error_pattern: '(?i)\b(error|exception|traceback|critical|fatal|panic)\b|"level":\s*"(ERROR|CRITICAL)"'
+# HTTP-проба health_url (метка tgit.health_url): таймаут, секунды
+http_timeout: 5
+# Таймаут одной проверки — упавшая или зависшая проверка не роняет отчёт
+check_timeout: 15
diff --git a/config/texts.yaml b/config/texts.yaml
index c4ba489..f8e30fa 100644
--- a/config/texts.yaml
+++ b/config/texts.yaml
@@ -30,7 +30,6 @@ help:
 
 section:
   commit: "📝 Коммит\n\nРаздел в разработке."
-  status: "🩺 Статус\n\nРаздел в разработке."
   logs: "📜 Логи\n\nРаздел в разработке."
   alerts: "🚨 Алерты\n\nРаздел в разработке."
   members: "👥 Участники\n\nРаздел в разработке."
@@ -134,3 +133,37 @@ commit:
   push_empty: "В main уже всё так же — коммитить нечего. Черновик очищен."
   push_limit: "Лимит — 20 пушей в час. Попробуйте позже."
   push_failed: "Не удалось запушить: репозиторий недоступен. Черновик сохранён — попробуйте позже."
+
+status:
+  title: "🩺 Статус · {count} конт. · {time} UTC"
+  line: "{light} {name} · {state}"
+  empty: "Контейнеров tgit не найдено."
+  unavailable: "Docker недоступен, попробуйте через минуту."
+  card: |-
+    {light} {name}
+    Сервис: {service} · образ: {image}
+    Состояние: {state} · health: {health}
+    Аптайм: {uptime} · рестартов: {restarts}
+    CPU: {cpu} · RAM: {mem} из {limit} ({mem_pct})
+    Ревизия: {sha} · деплой: {deployed}
+  none: "—"
+  no_limit: "без лимита"
+  check_button: "🩺 Запустить проверки"
+  refresh: "🔄 Обновить"
+  to_list: "⬅️ К списку"
+  to_card: "⬅️ К контейнеру"
+  checking: "🩺 Проверяю контейнеры…"
+  report_title: "🩺 Проверки · без ошибок {ok} из {total} · {time} UTC"
+  report_container: "{light} {name}"
+  report_line: "  {verdict} {title}{detail}"
+  check_running: "запущен"
+  check_health: "Docker health"
+  check_restarts: "рестарты за 5 мин не растут"
+  check_cpu: "CPU ниже порога"
+  check_mem: "RAM ниже порога"
+  check_log_errors: "нет ошибок в логе за 5 мин"
+  check_http: "HTTP-проба"
+  days: "д"
+  hours: "ч"
+  minutes: "мин"
+  seconds: "с"
diff --git a/docker-compose.yml b/docker-compose.yml
index f4158fd..6cb565e 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -6,15 +6,21 @@ services:
     environment:
       DATABASE_URL: postgresql+asyncpg://tgit:${POSTGRES_PASSWORD:-tgit}@postgres:5432/tgit
       GIT_CLONE_DIR: /data/uploads
+      DOCKER_URL: http://docker-proxy:2375
     volumes:
       - uploads:/data
     depends_on:
       postgres:
         condition: service_healthy
+      docker-proxy:
+        condition: service_started
     restart: unless-stopped
     mem_limit: 384m  # ~190 MB idle; git clone/push and aiogram spikes need headroom
     labels:
       tgit.managed: "true"
+      # Shown on the «Статус» card; infra/deploy/remote.sh sets both, a local `make up` leaves them empty
+      tgit.sha: ${TGIT_SHA:-}
+      tgit.deployed_at: ${TGIT_DEPLOYED_AT:-}
     logging:
       options: { max-size: "10m", max-file: "3" }
 
@@ -38,6 +44,21 @@ services:
     logging:
       options: { max-size: "10m", max-file: "3" }
 
+  # The only holder of the Docker socket: GET on /containers/* and nothing else (ADR-006). The bot never sees the socket.
+  docker-proxy:
+    image: tecnativa/docker-socket-proxy:0.3.0
+    environment:
+      CONTAINERS: 1  # list, inspect, stats, logs
+      POST: 0        # no create/start/stop/exec — restarts go through tgit-runner (#13)
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+    restart: unless-stopped
+    mem_limit: 64m
+    labels:
+      tgit.managed: "true"
+    logging:
+      options: { max-size: "10m", max-file: "3" }
+
 volumes:
   pgdata:
   uploads:
diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md
index 46aaca6..d1d27f4 100644
--- a/docs/ARCHITECTURE.md
+++ b/docs/ARCHITECTURE.md
@@ -84,8 +84,11 @@ pydantic-модели ответов. Методы: `list_runs`, `get_run`, `get
 - **Карточка** — `inspect` (state, health, restart count, started_at, метки `tgit.sha`, `tgit.deployed_at`) + `stats`.
 - **Проверки** (`runtime/checks.py`) — набор независимых функций `Check -> CheckResult(ok, detail)`:
   `running`, `docker_health`, `restarts_stable` (сравнение с 5 мин назад, история из БД), `cpu_ok`, `mem_ok`,
-  `no_errors_in_logs` (5 мин, шаблон из `config/checks.yaml`), `http_probe` (если в `services/<name>/tgit.yaml`
-  объявлен `health_url`; проба из сети сервиса через runner). Результат — отчёт-таблица.
+  `no_errors_in_logs` (5 мин, шаблон из `config/checks.yaml`), `http_probe` (если у контейнера есть метка
+  `tgit.health_url`; пока нет runner (#13) — проба из сети бота). Каждая проверка — со своим таймаутом: упавшая или
+  зависшая даёт ❌ с причиной, остальные выполняются. Пороги и окно — в `config/checks.yaml`.
+- **Изоляция** — прокси отдаёт контейнеры всего хоста, поэтому бот сам фильтрует по метке `tgit.managed=true` и
+  отказывает в `inspect`/`stats`/`logs` по id не из этого списка ещё до запроса.
 - **Мониторинг** — поток `events` (`die`, `oom`, `health_status`, `restart`) и опрос `stats` раз в 15 с → события для `alerts`.
 
 ### 2.7 `app/logs` — grep-движок
diff --git a/infra/deploy/remote.sh b/infra/deploy/remote.sh
index a715110..aa8627d 100755
--- a/infra/deploy/remote.sh
+++ b/infra/deploy/remote.sh
@@ -17,6 +17,9 @@ if [ -f "release-$SHA.tgz" ]; then
 fi
 
 cd app
+# Labels on the bot container, shown on its «Статус» card
+export TGIT_SHA=$SHA TGIT_DEPLOYED_AT
+TGIT_DEPLOYED_AT=$(date -u +%Y-%m-%dT%H:%M:%SZ)
 docker compose -p "$PROJECT" up -d --build --remove-orphans </dev/null
 
 status=""
diff --git a/pyproject.toml b/pyproject.toml
index 10243bf..6d40617 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,6 +27,7 @@ dev = [
     "pytest-cov>=5.0",
     "respx>=0.21",
     "aiosqlite>=0.20",
+    "types-regex>=2026.9.29.20261017",
 ]
 
 [build-system]
diff --git a/tests/bot/test_common.py b/tests/bot/test_common.py
index 1ceb285..cf28242 100644
--- a/tests/bot/test_common.py
+++ b/tests/bot/test_common.py
@@ -46,7 +46,7 @@ async def test_outsider_stale_button_is_swallowed(tg: TgClient) -> None:
     assert len(tg.session.sent(AnswerCallbackQuery)) == 1
 
 
-@pytest.mark.parametrize("section", ["status", "logs", "alerts"])
+@pytest.mark.parametrize("section", ["logs", "alerts"])
 async def test_menu_button_opens_section_with_nav(tg: TgClient, texts: Texts, section: str) -> None:
     await tg.send(ADMIN, getattr(texts.menu, section))
 
diff --git a/tests/bot/test_status.py b/tests/bot/test_status.py
new file mode 100644
index 0000000..438478f
--- /dev/null
+++ b/tests/bot/test_status.py
@@ -0,0 +1,143 @@
+from collections.abc import AsyncIterator
+
+import httpx
+import pytest
+from aiogram.methods import AnswerCallbackQuery, EditMessageText, SendMessage
+
+from app.access.service import AccessService
+from app.bot.routers.status import StatusAct, StatusCb, duration
+from app.db.session import SessionMaker
+from app.main import build_dispatcher
+from app.repo.git import UploadsRepo
+from app.runtime.checks import Checker, load_checks
+from app.runtime.docker import DockerClient
+from app.runtime.snapshots import SnapshotStore
+from app.texts import Texts
+from tests.conftest import ADMIN, ROOT
+from tests.fakes import TgClient
+from tests.runtime.fake_docker import FakeDocker
+
+
+@pytest.fixture
+def fake() -> FakeDocker:
+    fake = FakeDocker()
+    fake.add("tgit-dev-bot-1", service="bot", labels={"tgit.sha": "22d9f0c5abcdef0123"})
+    fake.add("unhealthy", service="unhealthy", health="unhealthy")
+    fake.add("vobot-api-1", managed=False)
+    return fake
+
+
+@pytest.fixture
+async def docker(fake: FakeDocker) -> AsyncIterator[DockerClient]:
+    async with fake.client() as client:
+        yield client
+
+
+@pytest.fixture
+def tg(
+    texts: Texts, sessions: SessionMaker, access: AccessService, repo: UploadsRepo, docker: DockerClient
+) -> TgClient:
+    checker = Checker(
+        docker,
+        SnapshotStore(sessions),
+        load_checks(ROOT / "config"),
+        httpx.AsyncClient(transport=httpx.MockTransport(lambda r: httpx.Response(200))),
+    )
+    return TgClient(build_dispatcher(texts, sessions, access, repo, docker=docker, checker=checker))
+
+
+def short(fake: FakeDocker, name: str) -> str:
+    return next(c.id[:12] for c in fake.containers.values() if c.name == name)
+
+
+async def test_list_shows_managed_containers_with_lights(tg: TgClient, texts: Texts) -> None:
+    await tg.send(ADMIN, texts.menu.status)
+
+    [reply] = tg.session.sent(SendMessage)
+    assert "🟢 tgit-dev-bot-1 · running, healthy" in reply.text
+    assert "🔴 unhealthy · running, unhealthy" in reply.text
+    assert "vobot" not in reply.text
+    labels = [b.text for row in reply.reply_markup.inline_keyboard for b in row]
+    assert texts.status.check_button in labels and texts.status.refresh in labels
+
+
+async def test_card(tg: TgClient, texts: Texts, fake: FakeDocker) -> None:
+    await tg.send(ADMIN, texts.menu.status)
+    await tg.press(ADMIN, StatusCb(a=StatusAct.CARD, id=short(fake, "tgit-dev-bot-1")).pack())
+
+    [card] = tg.session.sent(EditMessageText)
+    assert card.text.startswith("🟢 tgit-dev-bot-1")
+    assert "Ревизия: 22d9f0c5abcd" in card.text
+    assert "CPU: 5.0% · RAM: 64.0 МБ из 256.0 МБ (25%)" in card.text
+    assert "рестартов: 0" in card.text
+
+
+async def test_card_of_stopped_container(tg: TgClient, texts: Texts, fake: FakeDocker) -> None:
+    fake.add("stopped", state="exited", health=None, exit_code=1)
+    await tg.press(ADMIN, StatusCb(a=StatusAct.CARD, id=short(fake, "stopped")).pack())
+
+    [card] = tg.session.sent(EditMessageText)
+    assert card.text.startswith("🔴 stopped")
+    assert "exited (exit 1)" in card.text
+    assert f"CPU: {texts.status.none}" in card.text
+
+
+async def test_run_all_checks(tg: TgClient, texts: Texts) -> None:
+    await tg.press(ADMIN, StatusCb(a=StatusAct.CHECK).pack())
+
+    [report] = tg.session.sent(EditMessageText)
+    assert report.text.startswith("🩺 Проверки · без ошибок 1 из 2")
+    assert "✅ tgit-dev-bot-1" in report.text
+    assert "❌ unhealthy" in report.text
+    assert f"❌ {texts.status.check_health} · unhealthy" in report.text
+    [ack, *_] = tg.session.sent(AnswerCallbackQuery)
+    assert ack.text == texts.status.checking
+
+
+async def test_checks_of_one_container_offer_way_back(tg: TgClient, texts: Texts, fake: FakeDocker) -> None:
+    await tg.press(ADMIN, StatusCb(a=StatusAct.CHECK, id=short(fake, "unhealthy")).pack())
+
+    [report] = tg.session.sent(EditMessageText)
+    assert "без ошибок 0 из 1" in report.text
+    labels = [b.text for row in report.reply_markup.inline_keyboard for b in row]
+    assert texts.status.to_card in labels
+
+
+async def test_foreign_or_vanished_container_is_refused(tg: TgClient, texts: Texts, fake: FakeDocker) -> None:
+    await tg.press(ADMIN, StatusCb(a=StatusAct.CARD, id=short(fake, "vobot-api-1")).pack())
+
+    assert not tg.session.sent(EditMessageText)
+    [alert] = tg.session.sent(AnswerCallbackQuery)
+    assert alert.text == texts.status.unavailable and alert.show_alert
+
+
+async def test_docker_down(tg: TgClient, texts: Texts, fake: FakeDocker) -> None:
+    fake.down = True
+    await tg.send(ADMIN, texts.menu.status)
+
+    assert [r.text for r in tg.session.sent(SendMessage)] == [texts.status.unavailable]
+
+
+async def test_without_docker_configured(
+    texts: Texts, sessions: SessionMaker, access: AccessService, repo: UploadsRepo
+) -> None:
+    tg = TgClient(build_dispatcher(texts, sessions, access, repo))
+    await tg.send(ADMIN, texts.menu.status)
+    await tg.press(ADMIN, StatusCb(a=StatusAct.CHECK).pack())
+
+    assert [r.text for r in tg.session.sent(SendMessage)] == [texts.status.unavailable]
+    assert tg.session.sent(AnswerCallbackQuery)[0].text == texts.status.unavailable
+
+
+async def test_refresh_list(tg: TgClient, texts: Texts) -> None:
+    await tg.press(ADMIN, StatusCb(a=StatusAct.LIST).pack())
+
+    [edit] = tg.session.sent(EditMessageText)
+    assert edit.text.startswith("🩺 Статус · 2 конт.")
+
+
+@pytest.mark.parametrize(
+    ("seconds", "expected"), [(5, "5 с"), (125, "2 мин"), (3 * 3600 + 120, "3 ч 2 мин"), (2 * 86400 + 3600, "2 д 1 ч")]
+)
+def test_duration(texts: Texts, seconds: float, expected: str) -> None:
+    assert duration(texts.status, seconds) == expected
diff --git a/tests/runtime/__init__.py b/tests/runtime/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/runtime/fake_docker.py b/tests/runtime/fake_docker.py
new file mode 100644
index 0000000..bd5f9ed
--- /dev/null
+++ b/tests/runtime/fake_docker.py
@@ -0,0 +1,160 @@
+"""An in-memory Docker Engine API behind httpx.MockTransport, GET-only like docker-socket-proxy."""
+
+import hashlib
+import json
+import struct
+from dataclasses import dataclass, field
+from datetime import UTC, datetime, timedelta
+from typing import Any
+from urllib.parse import parse_qs
+
+import httpx
+
+from app.config import DockerSettings
+from app.runtime.docker import DockerClient
+
+STARTED = datetime(2026, 10, 17, 8, 0, tzinfo=UTC)
+MiB = 1024 * 1024
+
+
+def frame(text: str, stream: int = 1) -> bytes:
+    data = text.encode()
+    return struct.pack(">BxxxI", stream, len(data)) + data
+
+
+@dataclass
+class FakeContainer:
+    id: str
+    name: str
+    service: str = ""
+    state: str = "running"
+    health: str | None = "healthy"
+    exit_code: int = 0
+    restart_count: int = 0
+    oom: bool = False
+    managed: bool = True
+    labels: dict[str, str] = field(default_factory=dict)
+    logs: list[tuple[datetime, str]] = field(default_factory=list)  # (when, line)
+    cpu_pct: float = 5.0
+    mem_bytes: int = 64 * MiB
+    mem_limit: int = 256 * MiB
+    stats_status: int = 200
+
+    def all_labels(self) -> dict[str, str]:
+        base = {"com.docker.compose.service": self.service} if self.service else {}
+        return {**base, **({"tgit.managed": "true"} if self.managed else {}), **self.labels}
+
+    def status_line(self) -> str:
+        if self.state == "running":
+            return "Up 2 hours" + {
+                "healthy": " (healthy)",
+                "unhealthy": " (unhealthy)",
+                "starting": " (health: starting)",
+            }.get(self.health or "", "")
+        if self.state == "exited":
+            return f"Exited ({self.exit_code}) 5 minutes ago"
+        return self.state.capitalize()
+
+
+class FakeDocker:
+    def __init__(self) -> None:
+        self.containers: dict[str, FakeContainer] = {}
+        self.requests: list[httpx.Request] = []
+        self.down = False
+
+    def add(self, name: str, **kw: Any) -> FakeContainer:
+        cid = hashlib.sha256(name.encode()).hexdigest()
+        c = FakeContainer(id=cid, name=name, **kw)
+        self.containers[cid] = c
+        return c
+
+    def client(self, **settings: Any) -> DockerClient:
+        return DockerClient(
+            DockerSettings(url="http://docker-proxy:2375", **settings), transport=httpx.MockTransport(self)
+        )
+
+    def __call__(self, request: httpx.Request) -> httpx.Response:
+        self.requests.append(request)
+        if self.down:
+            raise httpx.ConnectError("connection refused", request=request)
+        if request.method != "GET":
+            return httpx.Response(403, text="forbidden by proxy")
+        path = request.url.path
+        q = {k: v[0] for k, v in parse_qs(request.url.query.decode()).items()}
+        if path == "/_ping":
+            return httpx.Response(200, text="OK")
+        if path == "/containers/json":
+            return httpx.Response(200, json=self._list(q))
+        parts = path.strip("/").split("/")
+        if len(parts) == 3 and parts[0] == "containers" and parts[1] in self.containers:
+            c = self.containers[parts[1]]
+            match parts[2]:
+                case "json":
+                    return httpx.Response(200, json=self._inspect(c))
+                case "stats":
+                    if c.stats_status != 200:
+                        return httpx.Response(c.stats_status, text="stats broken")
+                    return httpx.Response(200, json=self._stats(c))
+                case "logs":
+                    since = datetime.fromtimestamp(int(q.get("since", "0")), UTC)
+                    body = b"".join(frame(line + "\n", 2 if "ERR" in line else 1) for at, line in c.logs if at >= since)
+                    return httpx.Response(200, content=body)
+        return httpx.Response(404, json={"message": "No such container"})
+
+    def _list(self, q: dict[str, str]) -> list[dict[str, Any]]:
+        wanted = json.loads(q.get("filters", "{}")).get("label", [])
+        out = []
+        for c in self.containers.values():
+            labels = c.all_labels()
+            if all(labels.get(k) == v for k, _, v in (w.partition("=") for w in wanted)):
+                out.append(
+                    {
+                        "Id": c.id,
+                        "Names": [f"/{c.name}"],
+                        "Image": f"{c.name}:latest",
+                        "State": c.state,
+                        "Status": c.status_line(),
+                        "Labels": labels,
+                    }
+                )
+        return out
+
+    def _inspect(self, c: FakeContainer) -> dict[str, Any]:
+        state: dict[str, Any] = {
+            "Status": c.state,
+            "ExitCode": c.exit_code,
+            "OOMKilled": c.oom,
+            "StartedAt": STARTED.strftime("%Y-%m-%dT%H:%M:%S.123456789Z"),
+            "FinishedAt": "0001-01-01T00:00:00Z",
+        }
+        if c.health is not None:
+            state["Health"] = {"Status": c.health}
+        return {
+            "Id": c.id,
+            "Name": f"/{c.name}",
+            "RestartCount": c.restart_count,
+            "State": state,
+            "Config": {"Image": f"{c.name}:latest", "Labels": c.all_labels()},
+        }
+
+    @staticmethod
+    def _stats(c: FakeContainer) -> dict[str, Any]:
+        # 2 CPUs, system delta 1e9 → cpu_pct = delta/1e9*2*100
+        delta = int(c.cpu_pct / 200 * 1e9)
+        return {
+            "cpu_stats": {
+                "cpu_usage": {"total_usage": 10_000 + delta},
+                "system_cpu_usage": 2_000_000_000,
+                "online_cpus": 2,
+            },
+            "precpu_stats": {"cpu_usage": {"total_usage": 10_000}, "system_cpu_usage": 1_000_000_000},
+            "memory_stats": {
+                "usage": c.mem_bytes + 10 * MiB,
+                "limit": c.mem_limit,
+                "stats": {"inactive_file": 10 * MiB},
+            },
+        }
+
+
+def now_minus(minutes: float) -> datetime:
+    return datetime.now(UTC) - timedelta(minutes=minutes)
diff --git a/tests/runtime/test_checks.py b/tests/runtime/test_checks.py
new file mode 100644
index 0000000..fb4f478
--- /dev/null
+++ b/tests/runtime/test_checks.py
@@ -0,0 +1,203 @@
+import asyncio
+import contextlib
+from collections.abc import AsyncIterator
+from datetime import UTC, datetime, timedelta
+
+import httpx
+import pytest
+
+from app.db.models import ContainerSnapshot
+from app.db.session import SessionMaker
+from app.runtime import checks
+from app.runtime.checks import Checker, CheckName, ChecksConfig, Verdict, count_errors, load_checks
+from app.runtime.docker import DockerClient, Light
+from app.runtime.snapshots import SnapshotStore, collect_once, snapshot_loop
+from tests.conftest import ROOT
+from tests.runtime.fake_docker import FakeDocker, now_minus
+
+CFG = load_checks(ROOT / "config")
+
+
+def probe(request: httpx.Request) -> httpx.Response:
+    if request.url.host == "broken":
+        raise httpx.ConnectError("refused", request=request)
+    return httpx.Response(200 if request.url.path == "/health" else 503)
+
+
+@pytest.fixture
+def fake() -> FakeDocker:
+    fake = FakeDocker()
+    fake.add("hello", service="hello", labels={"tgit.health_url": "http://hello:8000/health"})
+    fake.add(
+        "unhealthy", service="unhealthy", health="unhealthy", labels={"tgit.health_url": "http://unhealthy:8000/x"}
+    )
+    fake.add("crashed", state="exited", health=None, exit_code=137, oom=True)
+    return fake
+
+
+@pytest.fixture
+async def docker(fake: FakeDocker) -> AsyncIterator[DockerClient]:
+    async with fake.client() as client:
+        await client.containers()  # the bot always lists before it inspects
+        yield client
+
+
+@pytest.fixture
+def store(sessions: SessionMaker) -> SnapshotStore:
+    return SnapshotStore(sessions)
+
+
+@pytest.fixture
+def checker(docker: DockerClient, store: SnapshotStore) -> Checker:
+    return Checker(docker, store, CFG, httpx.AsyncClient(transport=httpx.MockTransport(probe)))
+
+
+def verdicts(report: checks.ContainerReport) -> dict[CheckName, Verdict]:
+    return {r.name: r.verdict for r in report.results}
+
+
+async def test_config_loads_and_bad_pattern_rejected() -> None:
+    assert CFG.window == 300
+    with pytest.raises(ValueError):
+        ChecksConfig(error_pattern="(unclosed")
+
+
+async def test_healthy_vs_unhealthy_vs_crashed(checker: Checker) -> None:
+    reports = {r.details.name: r for r in await checker.check_all()}
+
+    hello = verdicts(reports["hello"])
+    assert hello[CheckName.RUNNING] is Verdict.OK
+    assert hello[CheckName.HEALTH] is Verdict.OK
+    assert hello[CheckName.HTTP] is Verdict.OK
+    assert hello[CheckName.RESTARTS] is Verdict.SKIP  # no history yet
+    assert reports["hello"].ok
+
+    bad = verdicts(reports["unhealthy"])
+    assert bad[CheckName.HEALTH] is Verdict.FAIL
+    assert bad[CheckName.HTTP] is Verdict.FAIL
+    assert not reports["unhealthy"].ok
+
+    crashed = reports["crashed"]
+    assert verdicts(crashed)[CheckName.RUNNING] is Verdict.FAIL
+    assert "exit 137, OOM" in crashed.results[0].detail
+    assert verdicts(crashed)[CheckName.CPU] is Verdict.SKIP
+    assert crashed.details.light is Light.RED
+
+
+async def test_restarts_compared_with_history(
+    checker: Checker, fake: FakeDocker, docker: DockerClient, store: SnapshotStore
+) -> None:
+    hello = next(c for c in fake.containers.values() if c.name == "hello")
+    assert await collect_once(docker, store, now=datetime.now(UTC) - timedelta(minutes=3)) == 2  # running ones only
+    hello.restart_count = 2
+
+    report = await checker.check(hello.id)
+
+    result = next(r for r in report.results if r.name is CheckName.RESTARTS)
+    assert result.verdict is Verdict.FAIL
+    assert result.detail == "0 → 2"
+
+
+async def test_old_history_outside_window_is_ignored(
+    checker: Checker, fake: FakeDocker, sessions: SessionMaker
+) -> None:
+    hello = next(c for c in fake.containers.values() if c.name == "hello")
+    async with sessions.begin() as s:
+        s.add(
+            ContainerSnapshot(container="hello", at=now_minus(30), restart_count=0, cpu_pct=1, mem_pct=1, health=None)
+        )
+    hello.restart_count = 5
+
+    report = await checker.check(hello.id)
+
+    assert verdicts(report)[CheckName.RESTARTS] is Verdict.SKIP
+
+
+async def test_thresholds_and_log_errors(checker: Checker, fake: FakeDocker) -> None:
+    hello = next(c for c in fake.containers.values() if c.name == "hello")
+    hello.cpu_pct, hello.mem_bytes = 150.0, 250 * 1024 * 1024
+    hello.logs = [
+        (now_minus(20), "Traceback from long ago"),
+        (now_minus(1), "all good"),
+        (now_minus(1), '{"level": "ERROR", "msg": "boom"}'),
+    ]
+
+    report = await checker.check(hello.id)
+
+    v = verdicts(report)
+    assert v[CheckName.CPU] is Verdict.FAIL
+    assert v[CheckName.MEM] is Verdict.FAIL
+    log_result = next(r for r in report.results if r.name is CheckName.LOG_ERRORS)
+    assert log_result.verdict is Verdict.FAIL
+    assert log_result.detail.startswith("1: ")  # the old Traceback is outside the window
+
+
+async def test_broken_or_slow_check_does_not_spoil_report(
+    checker: Checker, fake: FakeDocker, monkeypatch: pytest.MonkeyPatch
+) -> None:
+    async def boom(ctx: checks.Context) -> checks.CheckResult:
+        raise RuntimeError("kaputt")
+
+    async def slow(ctx: checks.Context) -> checks.CheckResult:
+        await asyncio.sleep(10)
+        raise AssertionError
+
+    monkeypatch.setattr(checks, "CHECKS", [(CheckName.HEALTH, boom), (CheckName.HTTP, slow), *checks.CHECKS[:1]])
+    fast = Checker(checker._docker, checker._store, CFG.model_copy(update={"check_timeout": 0.05}), checker._http)
+    hello = next(c for c in fake.containers.values() if c.name == "hello")
+
+    report = await fast.check(hello.id)
+
+    by_name = {r.name: r for r in report.results}
+    assert by_name[CheckName.HEALTH].detail == "RuntimeError: kaputt"
+    assert by_name[CheckName.HTTP].detail == "timeout"
+    assert by_name[CheckName.RUNNING].verdict is Verdict.OK
+
+
+async def test_stats_failure_skips_cpu_and_mem(checker: Checker, fake: FakeDocker) -> None:
+    hello = next(c for c in fake.containers.values() if c.name == "hello")
+    hello.stats_status = 500
+
+    report = await checker.check(hello.id)
+
+    assert verdicts(report)[CheckName.CPU] is Verdict.SKIP
+    assert verdicts(report)[CheckName.RUNNING] is Verdict.OK
+
+
+async def test_http_probe_connection_error(fake: FakeDocker, checker: Checker) -> None:
+    hello = next(c for c in fake.containers.values() if c.name == "hello")
+    hello.labels["tgit.health_url"] = "http://broken/health"
+
+    report = await checker.check(hello.id)
+
+    result = next(r for r in report.results if r.name is CheckName.HTTP)
+    assert (result.verdict, result.detail) == (Verdict.FAIL, "ConnectError")
+
+
+async def test_snapshot_store_latest(docker: DockerClient, store: SnapshotStore) -> None:
+    await collect_once(docker, store, now=now_minus(1))
+    await collect_once(docker, store)
+
+    latest = await store.latest("hello")
+
+    assert latest is not None and latest.cpu_pct == 5.0 and latest.health == "healthy"
+
+
+def test_count_errors_reports_first_hit() -> None:
+    hits, first = count_errors("ok\nERROR one\nERROR two\n", r"ERROR")
+    assert (hits, first) == (2, "ERROR one")
+
+
+async def test_snapshot_loop_survives_docker_outage(
+    fake: FakeDocker, docker: DockerClient, store: SnapshotStore
+) -> None:
+    fake.down = True
+    task = asyncio.create_task(snapshot_loop(docker, store, interval=0.01))
+    await asyncio.sleep(0.05)
+    fake.down = False
+    await asyncio.sleep(0.05)
+    task.cancel()
+    with contextlib.suppress(asyncio.CancelledError):
+        await task
+
+    assert await store.latest("hello") is not None
diff --git a/tests/runtime/test_docker.py b/tests/runtime/test_docker.py
new file mode 100644
index 0000000..298fc35
--- /dev/null
+++ b/tests/runtime/test_docker.py
@@ -0,0 +1,110 @@
+import pytest
+
+from app.runtime.docker import DockerError, Light, demux_logs, light, parse_stats, parse_time
+from tests.runtime.fake_docker import FakeDocker, MiB, frame, now_minus
+
+
+@pytest.fixture
+def fake() -> FakeDocker:
+    fake = FakeDocker()
+    fake.add(
+        "tgit-dev-bot-1", service="bot", labels={"tgit.sha": "526eb56aa", "tgit.deployed_at": "2026-10-17T07:52:00Z"}
+    )
+    fake.add("tgit-dev-postgres-1", service="postgres")
+    fake.add("vobot-api-1", managed=False)  # someone else's project on the same host
+    return fake
+
+
+async def test_lists_only_managed_containers(fake: FakeDocker) -> None:
+    async with fake.client() as docker:
+        names = [c.name for c in await docker.containers()]
+
+    assert names == ["tgit-dev-bot-1", "tgit-dev-postgres-1"]
+    assert all(r.method == "GET" for r in fake.requests)
+
+
+async def test_foreign_container_is_refused_without_a_request(fake: FakeDocker) -> None:
+    foreign = next(c for c in fake.containers.values() if not c.managed)
+    async with fake.client() as docker:
+        await docker.containers()
+        fake.requests.clear()
+        with pytest.raises(DockerError):
+            await docker.inspect(foreign.id)
+        with pytest.raises(DockerError):
+            await docker.logs(foreign.id)
+        with pytest.raises(DockerError):
+            await docker.resolve(foreign.id[:12])
+
+    assert all("/containers/json" in str(r.url) for r in fake.requests)  # only re-listings, never the foreign id
+
+
+async def test_inspect_and_stats(fake: FakeDocker) -> None:
+    async with fake.client() as docker:
+        bot = next(c for c in await docker.containers() if c.service == "bot")
+        details = await docker.inspect(await docker.resolve(bot.short_id))
+        stats = await docker.stats(bot.id)
+
+    assert details.light is Light.GREEN
+    assert details.sha == "526eb56aa"
+    assert details.deployed_at is not None and details.deployed_at.hour == 7
+    assert details.started_at is not None and details.started_at.microsecond == 123456  # nanoseconds trimmed
+    assert stats.cpu_pct == 5.0
+    assert stats.mem_bytes == 64 * MiB  # page cache subtracted
+    assert stats.mem_pct == 25.0
+
+
+async def test_logs_are_demultiplexed_and_since_filtered(fake: FakeDocker) -> None:
+    bot = next(c for c in fake.containers.values() if c.service == "bot")
+    bot.logs = [(now_minus(10), "old line"), (now_minus(1), "fresh line"), (now_minus(0.5), "ERR on stderr")]
+    async with fake.client() as docker:
+        await docker.containers()
+        text = await docker.logs(bot.id, since=now_minus(5))
+
+    assert text == "fresh line\nERR on stderr\n"
+
+
+async def test_unreachable_docker_is_a_docker_error(fake: FakeDocker) -> None:
+    fake.down = True
+    async with fake.client() as docker:
+        assert not await docker.ping()
+        with pytest.raises(DockerError, match="unreachable"):
+            await docker.containers()
+
+
+async def test_ping(fake: FakeDocker) -> None:
+    async with fake.client() as docker:
+        assert await docker.ping()
+
+
+def test_demux_plain_tty_stream_passes_through() -> None:
+    assert demux_logs(b"plain text\n") == "plain text\n"
+    assert demux_logs(frame("a\n") + frame("b\n", 2)) == "a\nb\n"
+
+
+@pytest.mark.parametrize(
+    ("state", "health", "code", "expected"),
+    [
+        ("running", "healthy", 0, Light.GREEN),
+        ("running", None, 0, Light.GREEN),
+        ("running", "starting", 0, Light.YELLOW),
+        ("running", "unhealthy", 0, Light.RED),
+        ("restarting", None, 0, Light.RED),
+        ("exited", None, 137, Light.RED),
+        ("exited", None, 0, Light.WHITE),
+        ("created", None, 0, Light.YELLOW),
+    ],
+)
+def test_light(state: str, health: str | None, code: int, expected: Light) -> None:
+    assert light(state, health, code) is expected
+
+
+def test_parse_time_edge_cases() -> None:
+    assert parse_time(None) is None
+    assert parse_time("0001-01-01T00:00:00Z") is None
+    assert parse_time("garbage") is None
+
+
+def test_parse_stats_without_previous_sample() -> None:
+    stats = parse_stats({"cpu_stats": {"cpu_usage": {"total_usage": 5}}, "memory_stats": {}})
+    assert stats.cpu_pct == 0.0
+    assert stats.mem_pct == 0.0
diff --git a/uv.lock b/uv.lock
index 036ecf3..8b50e6e 100644
--- a/uv.lock
+++ b/uv.lock
@@ -807,6 +807,7 @@ dev = [
     { name = "respx" },
     { name = "ruff" },
     { name = "types-pyyaml" },
+    { name = "types-regex" },
 ]
 
 [package.metadata]
@@ -834,6 +835,7 @@ dev = [
     { name = "respx", specifier = ">=0.21" },
     { name = "ruff", specifier = ">=0.6" },
     { name = "types-pyyaml", specifier = ">=6.0" },
+    { name = "types-regex", specifier = ">=2026.9.29.20261017" },
 ]
 
 [[package]]
@@ -845,6 +847,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/15/c0/fc0644b7ddcfb969e95845837143cb5173ddd6e06ee4ba5fc493cd9329b7/types_pyyaml-6.0.12.20260906-py3-none-any.whl", hash = "sha256:bca893ff0d51df5c9053137d5d0e6ccd36e939a196356f1d5c16372422f5137b", size = 21282, upload-time = "2026-09-06T06:35:34.372Z" },
 ]
 
+[[package]]
+name = "types-regex"
+version = "2026.9.29.20261017"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/a2/bb/15d3c5f2f21ebf040430970e57bf8c438701e21ecd155607860e1dcff4f2/types_regex-2026.9.29.20261017.tar.gz", hash = "sha256:1eb0d21f77331e0f87268eeb1a75c4ac8025665a211c6e2e8ba084504b1c299f", size = 13971, upload-time = "2026-10-17T06:20:04.659Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/bd/2d/4a7cde6131caf872b33d25a66ffd938ebd10758e84527eb3c456cb558e77/types_regex-2026.9.29.20261017-py3-none-any.whl", hash = "sha256:d0bc5d8f44d2039f40f52b272e672266ba6cc1710956c6c7f5045000fea433b8", size = 11194, upload-time = "2026-10-17T06:20:03.623Z" },
+]
+
 [[package]]
 name = "typing-extensions"
 version = "4.16.0"