docs(deploy): bake Stage 18 prod-deploy decisions into the live docs

- ARCHITECTURE §13 prod bullet -> the realized mechanism: registry transport,
  two-host, rolling + auto-rollback, migration maintenance window, node_exporter,
  the undersized launch; the contour paragraph notes node_exporter + the
  telegram-local profile.
- deploy/README gains a prod rollout runbook (how to run, migrations/restore, cert
  rotation, sizing/monitoring, the full PROD_ set) + node_exporter row, the
  telegram-local profile note, and the soft AWG_CONF note.
- PLAN Stage 18 records the resolved open details and the remaining live cutover
  (pending erudit-game.ru DNS); the tracker reads 'machinery built; cutover pending DNS'.
- PRERELEASE TX/AG note the prod wiring is built.

PLAN.md

@@ -51,7 +51,7 @@ independent (see ARCHITECTURE §9.1).
 | 15 | Dual Telegram bots & language-gated variants | **done** |
 | 16 | Deploy infra & test contour (Dockerfiles, gateway static UI, compose, observability) | **done** |
 | 17 | Test-contour verification & defect fixes | **done** |
-| 18 | Prod contour deploy (SSH export/import, manual after merge) | todo |
+| 18 | Prod contour deploy (registry, two-host, rolling + auto-rollback; manual after merge) | machinery built; first cutover pending DNS |
 | 19 | User feedback (in-app submit + attachment, admin review/reply, account roles) | **done** |
 
 Scaffolding is incremental: `go.work` lists only existing modules; each stage
@@ -413,18 +413,28 @@ raw list is kept here as the record of what the first contour run surfaced.
   "что-то пошло не так". при этом "new -> эрудит" работает. Попробуй посмотреть в логах сейчас, может что-то есть. Или как-то иначе проанализируй, или давай вместе будем смотреть, если не получится.
 
 ### Stage 18 — Prod contour deploy
-Scope: the **production contour** on a remote host over SSH. Deploy by **container export/import**
-(`docker save` → `scp`/ssh → `docker load` → `docker compose up` on the remote), the SSH key + host IP
-in Gitea secrets; **strictly manual** (`workflow_dispatch`) after `development` is merged to `master`
-(the Stage 16 branch model: `feature/* → development → master`, merge gated green). Two-contour config
-uses **`TEST_`/`PROD_` secret/variable prefixes** — Gitea 1.26 has no deployment environments (verified:
-the `environments` API 404s), so a flat prefixed namespace is the convention.
-Reuses the Stage 16 `deploy/docker-compose.yml` as-is, mapping the **`PROD_`** set onto the same
-unprefixed compose vars. **No host caddy on prod**, so the contour's own caddy terminates TLS — set
-`CADDY_SITE_ADDRESS` to the prod domain so caddy does its own ACME (the Caddyfile is already
-parameterised for this; the test contour leaves it `:80` behind the host caddy).
-Open details (re-interview): export/import vs a registry trade-off; prod domain/cert source (ACME vs a
-provided cert) at the contour caddy; prod VPN; rollback.
+Scope: the **production contour** on **two remote hosts** over SSH — main (full stack, `erudit-game.ru`)
+and tg (the bot only). Resolved open details (re-interviewed):
+- **Transport: a registry** (not export/import) — build + push to `docker.iliadenisov.ru`, the hosts pull by tag.
+- **Cert: ACME** at the contour caddy (`CADDY_SITE_ADDRESS=erudit-game.ru www.erudit-game.ru`, no host caddy).
+- **No prod VPN** — the bot host has native Bot API egress (verified `api.telegram.org` → 200).
+- **Rollback** — rolling per-service deploy (least → most dependent), health-gated, auto-rollback to the
+  previous image tag; a maintenance window + consistent `pg_dump` only on a schema migration
+  (expand-contract keeps the auto-rollback image-only; the dump is a manual safety net).
+
+**Strictly manual** (`workflow_dispatch` from `master`, `confirm=deploy`) after `development → master`
+is merged green. `TEST_`/`PROD_` prefixed Gitea secrets/variables (Gitea 1.26 has no deployment
+environments — the `environments` API 404s). Hosts are provisioned by **`deploy/ansible/`** (docker, a
+non-sudo `deploy` user with the CI key, key-only sshd, ufw, fail2ban). The main host is **launch-sized**
+(2 vCPU / 1.9 GiB): `docker-compose.prod.yml` trims the R7 limits (`GOMAXPROCS=2`, smaller caps, 7d
+Prometheus retention) and adds `node_exporter` for host-memory monitoring (launch undersized, resize at
+Selectel reactively). `vpn`+`bot` are gated to a `telegram-local` compose profile (test only); the prod
+bot runs standalone from `docker-compose.bot.yml`. `GATEWAY_ABUSE_BAN_ENABLED=true`.
+
+**Built:** `deploy/ansible/` (both hosts provisioned + verified), the compose split + `node_exporter`,
+`.gitea/workflows/prod-deploy.yaml` + `deploy/prod-deploy.sh`, the full `PROD_` secret/variable set.
+**Remaining (acceptance):** the **first live cutover** — waits on the `erudit-game.ru` DNS delegation
+(`A`/`www` → the main host) that ACME requires; then run the workflow and verify the public site end-to-end.
 
 ### Stage 19 — User feedback *(done)*
 A user→operator feedback channel, sequenced after the numbered stages but shipped **before** the Stage 18

PRERELEASE.md

@@ -39,8 +39,8 @@ the edge before prod. Each phase maps back to the owner's raw pre-release TODO l
 | FM | First-move tile draw (official rules): each seated player draws a tile, the one closest to "A" leads (a blank beats every letter), ties re-drawing until a single leader; **honest per-draw `crypto/rand` entropy**, not the bag seed, so the **record** (`game_setup_draws`, migration `00013`) — not a seed — is the only account of the outcome, kept for future **tournaments** (designed as a discrete per-tile "player N draws" step). Friend/AI draws at create; **auto-match draws at *open*** against a synthetic `uuid.Nil` opponent whose draw rows are back-filled on join, so the opener's seat is fixed up front and the existing open-game pre-move is preserved (no reseating, no play-gating). Admin `/_gm/games/:id` gains the recorded draw list + a simple **step-by-step board replay** (`ReplayTimeline`). | owner ad-hoc | **done** |
 | SB | Single Telegram bot + per-user variant preferences: the two per-language bots collapse into **one** (drop `accounts.service_language`, `supported_languages`, the `*_EN`/`*_RU` env vars and game-language push routing — the single bot renders in the recipient's `preferred_language`); New Game variant gating moves to a profile **`variant_preferences`** set (default Erudit only, Erudit-first, server-enforced on the caller's auto-match/vs-AI/invitation-create paths, an invited friend may accept any variant); env vars collapse to unsuffixed `TELEGRAM_BOT_TOKEN`/`TELEGRAM_GAME_CHANNEL_ID`/`VITE_TELEGRAM_LINK`/`VITE_TELEGRAM_GAME_CHANNEL_NAME` and `GATEWAY_DEFAULT_SUPPORTED_LANGUAGES` is removed; wire drops `service_language`/`supported_languages` (Session, ValidateInitDataResponse) + the push `language` routing field and adds `variant_preferences` to Profile/UpdateProfile. | owner ad-hoc | **done** |
 | DV | Dictionary version hygiene: CI + image/compose seed track the current release (`v1.2.1`); a **seed-drift guard** records the flat dir's seed in an authoritative `.seed_version` marker so a bumped build seed on a live volume is ignored (it can't relabel live bytes — which would mis-serve the dictionary + void games pinned to the prior label); `DICT_VERSION` is the fresh-volume seed only, a live contour migrates through the admin console | owner ad-hoc | **done** |
-| TX | Telegram egress off the main host: split the connector into a home **validator** (Mini App / Login-Widget HMAC, no VPN, no Bot API — so game login no longer depends on Telegram being reachable) and a remote **bot** (Bot API long-poll + `sendMessage`) that holds **no inbound port** and dials the gateway over a reverse **mTLS bot-link** (`pkg/proto/botlink/v1`); the gateway funnels out-of-app push (fire-and-forget, at-most-once) and the backend admin broadcasts (a relay that awaits the bot's ack) down the link. The bot is Telegram-rate-limited; **one bot now**, with seams (a bot registry + `owns_updates` + command ids) for N later; **no webhook** (rejected: one URL per token, adds inbound + a static address). The **unified test contour** runs the split (the bot keeps its VPN sidecar and dials the gateway by its internal name; certs from `deploy/gen-certs.sh`). The **prod** wiring — the bot on a separate host (no VPN), the gateway bot-link port published, `PROD_` certs with scheduled rotation, an SSH deploy of both hosts together — is the **deferred final stage** (Stage 18). | owner ad-hoc | **done** (code + test contour; prod wiring → Stage 18) |
-| AG | Anti-abuse IP ban + honeypot/honeytoken (prod-only): a fail2ban-style in-memory `ratelimit.Banlist` keyed by client IP, fed by sustained rate-limiter rejections (the IP-keyed public/email/admin classes — the user class stays the soft-flag's concern), a **honeypot** decoy path (the contour caddy tags `/.env`, `/.git`, `/wp-*`, … with `X-Scrabble-Honeypot` and routes them to the gateway), and a **honeytoken** (`GATEWAY_HONEYTOKEN`, a planted bearer). The `abuseGuard` edge middleware refuses a banned IP with **429** before any work — closing the R3 gap that the static SPA/landing was outside the token bucket. Off by default — it keys by the real client IP the shared-NAT test contour does not expose (detection still logs there); enabled in prod via `GATEWAY_ABUSE_BAN_ENABLED`. Operators see + lift bans on the console **Throttled** page; the gateway syncs its active set to the backend (`/api/v1/internal/bans/sync`, `internal/banview`) every 30 s and applies operator unbans. | owner ad-hoc | **done** (code + test contour; ban enabled in prod → Stage 18) |
+| TX | Telegram egress off the main host: split the connector into a home **validator** (Mini App / Login-Widget HMAC, no VPN, no Bot API — so game login no longer depends on Telegram being reachable) and a remote **bot** (Bot API long-poll + `sendMessage`) that holds **no inbound port** and dials the gateway over a reverse **mTLS bot-link** (`pkg/proto/botlink/v1`); the gateway funnels out-of-app push (fire-and-forget, at-most-once) and the backend admin broadcasts (a relay that awaits the bot's ack) down the link. The bot is Telegram-rate-limited; **one bot now**, with seams (a bot registry + `owns_updates` + command ids) for N later; **no webhook** (rejected: one URL per token, adds inbound + a static address). The **unified test contour** runs the split (the bot keeps its VPN sidecar and dials the gateway by its internal name; certs from `deploy/gen-certs.sh`). The **prod** wiring — the bot on a separate host (no VPN), the gateway bot-link port published, `PROD_` certs, an SSH deploy of both hosts together — is **built in Stage 18** (the two-host registry rollout; first cutover pending the `erudit-game.ru` DNS). | owner ad-hoc | **done** (code + test contour; prod wiring built — Stage 18) |
+| AG | Anti-abuse IP ban + honeypot/honeytoken (prod-only): a fail2ban-style in-memory `ratelimit.Banlist` keyed by client IP, fed by sustained rate-limiter rejections (the IP-keyed public/email/admin classes — the user class stays the soft-flag's concern), a **honeypot** decoy path (the contour caddy tags `/.env`, `/.git`, `/wp-*`, … with `X-Scrabble-Honeypot` and routes them to the gateway), and a **honeytoken** (`GATEWAY_HONEYTOKEN`, a planted bearer). The `abuseGuard` edge middleware refuses a banned IP with **429** before any work — closing the R3 gap that the static SPA/landing was outside the token bucket. Off by default — it keys by the real client IP the shared-NAT test contour does not expose (detection still logs there); enabled in prod via `GATEWAY_ABUSE_BAN_ENABLED`. Operators see + lift bans on the console **Throttled** page; the gateway syncs its active set to the backend (`/api/v1/internal/bans/sync`, `internal/banview`) every 30 s and applies operator unbans. | owner ad-hoc | **done** (code + test contour; ban on in prod via Stage 18 — machinery built, cutover pending DNS) |
 | CM | Channel-chat moderation + promo bot: a second standalone bot in the bot container answers `/start` with a localized message + a **URL** button into the **main** bot's Mini App (`?startapp`; a `web_app` button would sign initData with the promo token, which the main validator rejects). The **main** bot gates write access in a channel's linked discussion chat. The chat **allows sending by default** and the bot only restricts (Telegram intersects the chat default with the per-user permission, so a per-user grant cannot exceed a deny-by-default group): it **mutes** a member who is not registered or is admin-suspended or holding a new **`chat_muted`** role, and **un-mutes** an eligible one it had muted, for a member currently in the chat (a `getChatMember` guard, since bots cannot list members). Eligibility = `registered AND NOT suspended AND NOT chat_muted` (the game suspension dominates), resolved once in the backend and reached two ways: the bot's `ResolveChatEligibility` on a `chat_member` event over the existing mTLS bot-link, and a backend `chat_access_changed` event → gateway → `ChatGate` command (emitted on block/unblock, a `chat_muted` change, a first registration, or a temporary-block expiry via a sweeper; idempotent). No schema change — `chat_muted` reuses `account_roles`. | owner ad-hoc | **done** |
 | → | Stage 18 — prod contour deploy | — | see [`PLAN.md`](PLAN.md) |
 

deploy/README.md

@@ -17,11 +17,12 @@ operational reference for **every environment variable**.
 | `backend` | built (`backend/Dockerfile`) | Domain service; bakes in the DAWG dictionaries; runs migrations at boot. |
 | `postgres` | `postgres:17-alpine` | Database (named volume, `pg_isready` healthcheck). |
 | `validator` | built (`platform/telegram/Dockerfile`, target `validator`) | Telegram HMAC validator (no VPN, no Bot API); internal gRPC at `validator:9091`. Game login depends only on this. |
-| `vpn` + `bot` | sidecar + built (`platform/telegram/Dockerfile`, target `bot`) | Telegram bot; egresses through the AmneziaWG sidecar; holds no inbound port — dials the gateway bot-link (mTLS) at `gateway:9443`. |
+| `vpn` + `bot` | sidecar + built (`platform/telegram/Dockerfile`, target `bot`) | Telegram bot, gated to the **`telegram-local`** profile; egresses through the AmneziaWG sidecar and dials the gateway bot-link (mTLS) at `gateway:9443`. The test contour activates the profile; the prod **main** host omits it and runs the bot standalone on its **own host** (`docker-compose.bot.yml`, no VPN — native Bot API egress). |
 | `otelcol` | `otel/opentelemetry-collector-contrib` | OTLP/gRPC `:4317` → Prometheus scrape (`:9464`) + Tempo. |
-| `prometheus` | `prom/prometheus` | Metrics, 15d retention. |
+| `prometheus` | `prom/prometheus` | Metrics, 15d retention (7d in prod). |
 | `tempo` | `grafana/tempo` | Traces, 72h retention. |
 | `grafana` | `grafana/grafana` | Dashboards (provisioned), anonymous-admin behind caddy's `/_gm/grafana`. |
+| `node_exporter` | `quay.io/prometheus/node-exporter` | Host CPU/memory/disk metrics (Prometheus job `node`); the OOM signal on the tight prod main host (2 vCPU / 1.9 GiB). |
 
 Networking: inter-service traffic is on the private `internal` network
 (project-scoped DNS); only `caddy` joins the shared external `edge` network so the
@@ -59,7 +60,6 @@ compose binds from this directory.
 | Variable | Gitea kind | Purpose |
 | --- | --- | --- |
 | `POSTGRES_PASSWORD` | secret | Postgres password (also embedded in `BACKEND_POSTGRES_DSN`). |
-| `AWG_CONF` | secret | AmneziaWG config for the VPN sidecar (the bot's only Telegram egress in the test contour). **Must not contain a `DNS=` line** — it hijacks the shared netns's resolv.conf and breaks the bot resolving `otelcol` / `gateway`. Without it, Docker's resolver handles `otelcol`, `gateway` and `api.telegram.org`. |
 | `GM_BASICAUTH_HASH` | secret | bcrypt hash gating `/_gm` (admin console + Grafana). Generate with `docker run --rm caddy:2-alpine caddy hash-password --plaintext '<pw>'`. |
 | `TELEGRAM_MINIAPP_URL` | variable | The Mini App URL the bot hands out in deep links / buttons. |
 
@@ -67,6 +67,13 @@ compose binds from this directory.
 secret) and the bot (Bot API). It defaults to empty in compose, but both **fail at
 boot** when it is empty.
 
+**Conditionally — `AWG_CONF`** (secret): the AmneziaWG config for the VPN sidecar, needed
+only when the `telegram-local` profile runs (the test contour and local runs with the
+bot). It is **not** `:?`-guarded — compose interpolates profiled-out services too, so the
+prod main host (no VPN) must not require it. It **must not contain a `DNS=` line** — that
+hijacks the shared netns's resolv.conf and breaks the bot resolving `otelcol` / `gateway`;
+without it Docker's resolver handles `otelcol`, `gateway` and `api.telegram.org`.
+
 ## Optional variables (with defaults)
 
 | Variable | Gitea kind | Default | Purpose |
@@ -110,6 +117,47 @@ collector's / gateway's internal IP is fine (connected route), but its `AWG_CONF
 which resolves `otelcol`, `gateway` and `api.telegram.org`. `GATEWAY_ADMIN_*` is
 intentionally **unset** — caddy owns `/_gm` in the contour.
 
+## Production rollout
+
+Prod runs on **two hosts** (main = full stack + ACME on the domain; tg = the bot only,
+native Bot API, no VPN), one-time provisioned by **[`ansible/`](ansible/)** (docker, a
+non-sudo `deploy` user holding the CI key, key-only sshd, default-deny ufw, fail2ban).
+Re-run `ansible/` after a host resize — it is idempotent.
+
+**To roll out:** merge `development → master` (CI green), then run the **`prod-deploy`**
+workflow manually (Gitea → Actions → prod-deploy → run from `master`, input
+`confirm=deploy`). It builds + pushes the images to the registry, ships the
+compose/config/certs/env over SSH, deploys the main host with `prod-deploy.sh` (rolling,
+health-gated, **auto-rollback to the previous tag**), then the bot host, then probes the
+public site. After `master` is green this workflow is the **only** thing that touches
+prod — nothing auto-deploys there.
+
+**Migrations** must be **expand-contract** (backward-compatible; goose is forward-only):
+the automatic rollback is image-only and never restores the DB. A deploy that changes
+`backend/internal/postgres/migrations/` opens a maintenance window — the backend (sole
+writer) is stopped for a consistent `pg_dump` into `/opt/scrabble/dumps` before the new
+backend migrates. **Manual DB restore** (only if a migration was destructive):
+`docker exec -i scrabble-postgres psql -U scrabble -d scrabble -c 'DROP SCHEMA backend CASCADE'`,
+then pipe the dump into the same `psql`, and redeploy the matching old tag.
+
+**bot-link cert rotation:** regenerate (`deploy/gen-certs.sh /tmp/c --force`), reset the
+five `PROD_BOTLINK_*` secrets from `/tmp/c`, and re-run the workflow — both hosts redeploy
+together with the fresh CA.
+
+**Sizing / monitoring:** the main host launches undersized (2 vCPU / 1.9 GiB); the prod
+overlay trims limits + `GOMAXPROCS=2` + 7d Prometheus retention, and `node_exporter` feeds
+host memory to Grafana (`/_gm/grafana/`). Watch host memory and resize at Selectel when
+players arrive.
+
+**`PROD_` Gitea set** (mirrors `TEST_`, mapped onto the unprefixed names above) — secrets:
+`PROD_{POSTGRES_PASSWORD, GM_BASICAUTH_HASH, GRAFANA_ADMIN_PASSWORD, TELEGRAM_BOT_TOKEN,
+TELEGRAM_PROMO_BOT_TOKEN, REGISTRY_PASSWORD, SSH_KEY, SSH_KNOWN_HOSTS, BOTLINK_CA,
+BOTLINK_GATEWAY_CERT, BOTLINK_GATEWAY_KEY, BOTLINK_BOT_CERT, BOTLINK_BOT_KEY}`; variables:
+`PROD_{REGISTRY_USER, MAIN_HOST, TG_HOST, CADDY_SITE_ADDRESS, GM_BASICAUTH_USER,
+GRAFANA_ROOT_URL, LOG_LEVEL, DICT_VERSION, TELEGRAM_MINIAPP_URL, TELEGRAM_GAME_CHANNEL_ID,
+TELEGRAM_CHAT_ID, TELEGRAM_BOT_USERNAME, VITE_TELEGRAM_BOT_ID, VITE_TELEGRAM_LINK,
+VITE_TELEGRAM_GAME_CHANNEL_NAME}`.
+
 ## Host-side setup (outside this repo)
 
 - **`edge` network** must exist on the host (`docker network create edge`).

docs/ARCHITECTURE.md

@@ -1056,8 +1056,10 @@ plaintext relay (`GATEWAY_BOTLINK_RELAY_ADDR`) the backend admin console calls.
 
 The full contour (`deploy/docker-compose.yml`) runs one `gateway`, one `backend`,
 one Postgres, the static `landing`, the Telegram `validator` and `bot` (+ the bot's VPN
-sidecar) and the **observability stack** —
-OTel Collector (OTLP/gRPC ingest → Prometheus metrics + Tempo traces) and Grafana
+sidecar — the `bot`+`vpn` pair is gated to a `telegram-local` compose profile so the prod
+main host can omit them) and the **observability stack** —
+OTel Collector (OTLP/gRPC ingest → Prometheus metrics + Tempo traces), a `node_exporter`
+for host CPU/memory (the prod main host's OOM signal), and Grafana
 with provisioned datasources and dashboards. All services export OTLP to the
 collector; the bot shares the VPN sidecar's netns, so its `AWG_CONF` must not
 carry a `DNS=` directive (that would hijack resolv.conf and stop it resolving
@@ -1081,16 +1083,30 @@ Two contours, two secret/variable prefixes (`TEST_` / `PROD_`):
   generated by `deploy/gen-certs.sh` before `compose up`; the bot keeps its VPN sidecar
   for Telegram egress and dials the gateway by its internal name, so the bot-link stays
   on the internal network.
-- **Prod**: a manual SSH deploy after `development → master`. There is no
-  host caddy, so the contour ships its own caddy terminating TLS — set
-  `CADDY_SITE_ADDRESS` to the domain and the caddy does its own ACME. The **bot runs
-  on a separate host** with native Telegram access (no VPN), deployed by SSH alongside
-  the main app (rolled together so the bot-link protocol versions never skew); the
-  gateway **publishes** the bot-link port and the certificates come from `PROD_`
-  secrets — a long-lived CA with leaves rotated by a scheduled job. The bot dials the
-  gateway's public bot-link endpoint and holds no inbound port; login is unaffected if
-  that host or the link is down. *(This prod wiring is the deferred final stage; the
-  code and the unified test contour land first — see `PRERELEASE.md`.)*
+- **Prod**: a **manual** rollout — `.gitea/workflows/prod-deploy.yaml`, `workflow_dispatch`
+  only (from `master`, `confirm=deploy`), run after `development → master` is merged green.
+  It builds and pushes the images to the registry (`docker.iliadenisov.ru`), then deploys
+  over SSH onto **two hosts** provisioned by `deploy/ansible/` (docker, a non-sudo `deploy`
+  service account holding a dedicated CI key, key-only sshd, default-deny ufw, fail2ban):
+  the **main host** runs the full stack (`docker-compose.yml` + `docker-compose.prod.yml`),
+  the **bot host** runs only the bot (`docker-compose.bot.yml`, no VPN — native Bot API
+  egress, telemetry off). There is no host caddy, so the contour caddy terminates TLS —
+  `CADDY_SITE_ADDRESS` is the domain and caddy does its own ACME. The gateway **publishes**
+  the bot-link `:9443`; the remote bot dials it over mTLS (certs from `PROD_BOTLINK_*`,
+  ServerName `gateway`, so TLS validation is independent of the public dial address), holds
+  no inbound port, and login is unaffected if that host or the link is down.
+  `deploy/prod-deploy.sh` rolls the main stack **one service at a time in dependency order**
+  (postgres → backend → gateway → landing → validator → caddy), health-checking after each;
+  any failure **rolls the whole stack back to the previous image tag**. A **schema migration**
+  adds a maintenance window: the backend (the sole writer) is stopped for a consistent
+  `pg_dump` before the new backend migrates forward — image rollback stays DB-safe under the
+  expand-contract migration rule, and the dump is kept for a manual restore. The main host is
+  intentionally **launch-sized** (2 vCPU / 1.9 GiB): the prod overlay trims the R7 limits
+  (`GOMAXPROCS=2`, smaller caps, 7d Prometheus retention) and a **node_exporter** feeds
+  host-memory metrics to Grafana so it can be resized reactively as players arrive.
+  `GATEWAY_ABUSE_BAN_ENABLED=true` in prod (the per-IP ban is meaningful only with real
+  client IPs). The `vpn`+`bot` pair is gated to a `telegram-local` compose profile the test
+  contour activates; the prod main host omits it.
 
 ## 14. CI & branches