feat(status): раздел «Статус» — контейнеры, карточка, проверки (#14)

- docker-socket-proxy в Compose (только GET /containers/*), сокет только у него
- app/runtime/docker.py: read-only клиент; видны только контейнеры с меткой
  tgit.managed=true, чужие id отклоняются до запроса
- app/runtime/checks.py: running, health, рестарты за окно, CPU/RAM, ошибки
  в логе, HTTP-проба; у каждой проверки свой таймаут, отчёт всегда полный
- app/runtime/snapshots.py: снапшоты раз в 15 с в container_snapshots
- бот: список с 🟢🟡🔴⚪, карточка, «🩺 Запустить проверки», «🔄 Обновить»
- деплой ставит метки tgit.sha / tgit.deployed_at на контейнер бота
- имя джоба CD без неотрисованного выражения

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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()