diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b64c5c9..36f0c7c 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -7,7 +7,7 @@ name: release
 # can never drift apart (the invariant restore's version check in spec 7.5.A
 # depends on).
 #
-# Native per-architecture builds (plan implementation-plan.md C.4), not qemu:
+# Native per-architecture builds (see docs/development.md), not qemu:
 # running the full Postfix/OpenDKIM stack under emulation for the e2e gate
 # below is impractically slow. Each arch builds, e2e-gates and pushes its own
 # tag on its own native runner; a merge job then combines them into the one
@@ -68,7 +68,7 @@ jobs:
           go-version: "1.26"
           cache-dependency-path: test/e2e/go.sum
 
-      - name: e2e (gates publishing — see docs/implementation-plan.md C.4)
+      - name: e2e (gates publishing — see docs/development.md)
         run: cd test/e2e && go test -v -timeout 20m ./...
 
       - name: Log in to ghcr.io
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 18f9b51..e9cfc56 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ Format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/); version
 
 ## [Unreleased]
 
+## [1.0.0] - 2026-08-09
+
 ### Added
 
 - A **Delivery log** on each delivery's page (`/deliveries/{id}`): the
@@ -30,6 +32,28 @@ Format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/); version
 
 ### Fixed
 
+- Postfix config: copy TLS cert/key from the (often `:ro`, host-owned) mount
+  into `/etc/postfix/tls-internal` as `root:root` before `postconf` /
+  `postfix check`. Bind-mounted keys owned by the CI/host UID made
+  `postfix check` fail and the container exit before supervisord started.
+- Postfix config: allow `maillog_file` under `/data` via
+  `maillog_file_prefixes=/var,/dev/stdout,/data`, and pin the `postlog`
+  master.cf service. After mail.log moved to `/data/log`, `postfix check`
+  fatally rejected the path (default prefixes are only `/var` and
+  `/dev/stdout`) and often left stderr/mail.log empty.
+- E2e: read `/data/setup-token` via `docker compose exec` (file is `0600`
+  panel-owned; host `ReadFile` got permission denied on CI). Reclaim `/data`
+  ownership before TempDir/stage cleanup so panel/postfix UIDs do not fail
+  Go's `RemoveAll`.
+- Entrypoint: check `SELFPOST_HOSTNAME` before `/data` setup (so a bad identity
+  fails with the FATAL text, not an earlier `set -e` abort), and `chmod 755
+  /data` after chown so OpenDKIM/Postfix can traverse bind mounts that arrive
+  as mode `0700` (Go `TempDir`, some host umasks) — otherwise KeyTable is
+  unreachable and the container crash-loops. E2e stand uses `restart: "no"` and
+  surfaces selfpost logs from the supervisor readiness check.
+- E2e gate: wait for host-published `/healthz` before panel setup, and stop
+  ordered `TestE2E` subtests after a failure so a nil panel client cannot panic
+  and mask the real error (release CI on both amd64 and arm64).
 - A send-log row could stay `queued` forever after the container was recreated.
   `mail.log` moved from the ephemeral `/var/log` into the data volume
   (`/data/log/mail.log`, `./data/log/` on the host), so the delivery lines that
@@ -61,10 +85,10 @@ Format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/); version
   layering and route table match `web`→`store` and `POST /domains/import`;
   OpenDKIM drops to `opendkim` via `UserID`; guide drops the archived
   "spec 7.5" pointer, clarifies `POSTFIX_SENDER_LOGIN_MAPS` vs panel writes,
-  and states logrotate keeps 14 daily files. Intermediate CHANGELOG cuts vs
-  the still-pinned compose `0.1.0` image are called out in the guide and
-  `development.md`. Roadmap / implementation-plan point at CHANGELOG
-  `[0.5.0]` Security and refreshed `internal/web` size / symbol links.
+  and states logrotate keeps 14 daily files. Intermediate CHANGELOG cuts from
+  before the published `1.0.0` image are called out in the guide and
+  `development.md`. Roadmap points at CHANGELOG `[0.5.0]` Security and
+  refreshed `internal/web` size / symbol links.
 - Full backups no longer carry `/data/log`. It is Postfix's raw log plus its
   fourteen rotated copies — diagnostic output rather than state to restore, and
   otherwise by far the largest thing in the archive.
@@ -94,6 +118,11 @@ Format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/); version
   dev-host-specific workflow and `example.com` references removed from docs.
 - `docs/development.md` and `.cursor/rules/agent-rules.mdc` translated to
   English; `roadmap.md` remains Russian (internal tracker).
+- Deploy pin and local-trial image tag set to `ghcr.io/mixeme/selfpost:1.0.0`
+  (compose and git tag `v1.0.0` cut together). Retired
+  `docs/implementation-plan.md` and `docs/v1.x-closure-plan.md`; Makefile,
+  `release.yml`, and e2e comments point at `docs/development.md`. Roadmap
+  v1.x documentation/deploy tail closed.
 
 ## [0.6.0] - 2026-08-08
 
diff --git a/Makefile b/Makefile
index 491605c..f8ab028 100644
--- a/Makefile
+++ b/Makefile
@@ -30,7 +30,7 @@ test:
 clean:
 	rm -rf bin
 
-# Hermetic container e2e (plan implementation-plan.md C.4): separate Go module
+# Hermetic container e2e (see docs/development.md): separate Go module
 # under test/e2e so its test-only dependencies (DKIM verification) never enter
 # this module's build graph. Builds the image fresh from this checkout, brings
 # up deploy/docker-compose.yml plus a test-only override on high ports and an
diff --git a/README.md b/README.md
index b7e1639..65e36e7 100644
--- a/README.md
+++ b/README.md
@@ -92,7 +92,7 @@ docker run --rm -d --name selfpost-try \
   -e SELFPOST_HOSTNAME=mail.local.test \
   -e PANEL_COOKIE_SECURE=false \
   -v selfpost-try-data:/data \
-  ghcr.io/mixeme/selfpost:0.1.0
+  ghcr.io/mixeme/selfpost:1.0.0
 ```
 
 **Get the setup URL** (pick one):
diff --git a/build/entrypoint.sh b/build/entrypoint.sh
index b0087a5..c24179f 100644
--- a/build/entrypoint.sh
+++ b/build/entrypoint.sh
@@ -1,14 +1,69 @@
 #!/bin/sh
 # Container entrypoint (runs as root, PID 1 until it execs supervisord).
 #
+# SELFPOST_HOSTNAME is checked first (plan B.3): it must fail fast with a clear
+# message before /data normalisation or Postfix config, so a bad identity never
+# looks like a permissions or packaging problem (and so the e2e hostname-gate
+# tests see the FATAL text rather than an earlier set -e abort).
+set -e
+
+# SELFPOST_HOSTNAME is an identity, not a setting with a safe default: it must
+# simultaneously match the PTR/rDNS record, the certificate CN/SAN, and the
+# Cyrus SASL realm (spec 5.2 p.3, 8). The panel (main.go saslRealm()) and
+# postfix-config.sh each fall back independently when it's unset — to
+# `localhost` and to the container hostname respectively — so accounts get
+# written under one realm and looked up under another and authentication
+# silently fails for every application, while HELO also stops matching the
+# PTR record and mail that does go out lands in spam. No fallback can be
+# correct, so fail loudly here, before either side of that split has a chance
+# to run, rather than leave a green panel with broken mail.
+if [ -z "$SELFPOST_HOSTNAME" ]; then
+	cat >&2 <<'EOF'
+FATAL: SELFPOST_HOSTNAME is not set.
+
+This is the mail server's identity: it becomes the Postfix HELO/EHLO name,
+the Cyrus SASL realm that application passwords are looked up under, and it
+must match the TLS certificate's CN/SAN as well as this server's PTR (reverse
+DNS) record. There is no safe default — guessing any one of these wrong
+breaks authentication for every application or sends outgoing mail to spam,
+silently.
+
+Set it to the mail server's fully-qualified domain name, e.g.:
+
+    SELFPOST_HOSTNAME=mail.example.com
+
+in the .env file next to your docker-compose.yml (see deploy/.env.example).
+EOF
+	exit 1
+fi
+
+case "$SELFPOST_HOSTNAME" in
+	*[\ \	]* | *://* | *:* )
+		echo "FATAL: SELFPOST_HOSTNAME must be a bare hostname (no scheme, port, or spaces): \"$SELFPOST_HOSTNAME\"" >&2
+		echo 'Example: SELFPOST_HOSTNAME=mail.example.com' >&2
+		exit 1
+		;;
+	*.*)
+		;;
+	*)
+		echo "FATAL: SELFPOST_HOSTNAME must be a fully-qualified domain name (at least one dot): \"$SELFPOST_HOSTNAME\"" >&2
+		echo 'Example: SELFPOST_HOSTNAME=mail.example.com' >&2
+		exit 1
+		;;
+esac
+
 # The persistent root /data is a host bind mount (spec 9), so it arrives owned
 # by the host user (typically root), not by the unprivileged panel user that
 # actually writes the SQLite database, setup token and DKIM keys (spec 7.6.8).
 # Fix its ownership here — the one place still running as root — before handing
 # off to supervisord, which starts the panel as the panel user.
-set -e
-
+#
+# Mode must stay world-traversable (0755): OpenDKIM and Postfix reach their
+# trees under /data as other users. Go's testing.TempDir is 0700, and a bare
+# chown would leave that mode in place — opendkim then cannot read KeyTable and
+# the container crash-loops (e2e TestHostnameGate/valid_hostname_starts).
 chown panel:panel /data
+chmod 755 /data
 # Restored backups or previously-created state may contain panel-owned files
 # under /data; make sure they stay writable without disturbing anything that a
 # later phase deliberately hands to another service. /data/log is exempt: it is
@@ -83,51 +138,6 @@ chown opendkim:selfpost /run/opendkim
 chown panel:selfpost /run/selfpost
 chmod 2750 /run/opendkim /run/selfpost
 
-# SELFPOST_HOSTNAME is an identity, not a setting with a safe default: it must
-# simultaneously match the PTR/rDNS record, the certificate CN/SAN, and the
-# Cyrus SASL realm (spec 5.2 p.3, 8). The panel (main.go saslRealm()) and
-# postfix-config.sh each fall back independently when it's unset — to
-# `localhost` and to the container hostname respectively — so accounts get
-# written under one realm and looked up under another and authentication
-# silently fails for every application, while HELO also stops matching the
-# PTR record and mail that does go out lands in spam. No fallback can be
-# correct, so fail loudly here, before either side of that split has a chance
-# to run, rather than leave a green panel with broken mail.
-if [ -z "$SELFPOST_HOSTNAME" ]; then
-	cat >&2 <<'EOF'
-FATAL: SELFPOST_HOSTNAME is not set.
-
-This is the mail server's identity: it becomes the Postfix HELO/EHLO name,
-the Cyrus SASL realm that application passwords are looked up under, and it
-must match the TLS certificate's CN/SAN as well as this server's PTR (reverse
-DNS) record. There is no safe default — guessing any one of these wrong
-breaks authentication for every application or sends outgoing mail to spam,
-silently.
-
-Set it to the mail server's fully-qualified domain name, e.g.:
-
-    SELFPOST_HOSTNAME=mail.example.com
-
-in the .env file next to your docker-compose.yml (see deploy/.env.example).
-EOF
-	exit 1
-fi
-
-case "$SELFPOST_HOSTNAME" in
-	*[\ \	]* | *://* | *:* )
-		echo "FATAL: SELFPOST_HOSTNAME must be a bare hostname (no scheme, port, or spaces): \"$SELFPOST_HOSTNAME\"" >&2
-		echo 'Example: SELFPOST_HOSTNAME=mail.example.com' >&2
-		exit 1
-		;;
-	*.*)
-		;;
-	*)
-		echo "FATAL: SELFPOST_HOSTNAME must be a fully-qualified domain name (at least one dot): \"$SELFPOST_HOSTNAME\"" >&2
-		echo 'Example: SELFPOST_HOSTNAME=mail.example.com' >&2
-		exit 1
-		;;
-esac
-
 # Generate the outbound-relay Postfix configuration from the environment (spec
 # 5). Kept out of the image build so cert paths, rate limits, hostname and the
 # optional 587 service are all driven by env at run time, and re-derived on every
diff --git a/build/postfix-config.sh b/build/postfix-config.sh
index 3bd634e..a595c96 100644
--- a/build/postfix-config.sh
+++ b/build/postfix-config.sh
@@ -23,8 +23,26 @@ HOSTNAME_VALUE="${SELFPOST_HOSTNAME:-$(hostname -f 2>/dev/null || hostname)}"
 # TLS material supplied by the reverse-proxy through a read-only bind mount
 # (spec 5.2). The relay requires TLS on 465; if these files are absent the
 # master still starts but TLS handshakes on 465 fail until they appear.
-TLS_CERT="${TLS_CERT_FILE:-/etc/postfix/tls/fullchain.pem}"
-TLS_KEY="${TLS_KEY_FILE:-/etc/postfix/tls/privkey.pem}"
+#
+# Postfix insists the private key is root-owned and mode 0600. The bind mount
+# is often :ro and owned by the host user (e2e TempDir / CI runner UID), so
+# copy into a writable internal dir and normalise ownership before postconf
+# and `postfix check`.
+TLS_CERT_SRC="${TLS_CERT_FILE:-/etc/postfix/tls/fullchain.pem}"
+TLS_KEY_SRC="${TLS_KEY_FILE:-/etc/postfix/tls/privkey.pem}"
+TLS_INTERNAL_DIR=/etc/postfix/tls-internal
+TLS_CERT="$TLS_CERT_SRC"
+TLS_KEY="$TLS_KEY_SRC"
+if [ -f "$TLS_CERT_SRC" ] && [ -f "$TLS_KEY_SRC" ]; then
+	mkdir -p "$TLS_INTERNAL_DIR"
+	cp -f "$TLS_CERT_SRC" "$TLS_INTERNAL_DIR/fullchain.pem"
+	cp -f "$TLS_KEY_SRC" "$TLS_INTERNAL_DIR/privkey.pem"
+	chown root:root "$TLS_INTERNAL_DIR/fullchain.pem" "$TLS_INTERNAL_DIR/privkey.pem"
+	chmod 0644 "$TLS_INTERNAL_DIR/fullchain.pem"
+	chmod 0600 "$TLS_INTERNAL_DIR/privkey.pem"
+	TLS_CERT="$TLS_INTERNAL_DIR/fullchain.pem"
+	TLS_KEY="$TLS_INTERNAL_DIR/privkey.pem"
+fi
 
 # Level-1 rate limit (native Postfix anvil, spec 5 p.5 / 7.4). Conservative
 # defaults, sensible during IP warm-up (spec 10).
@@ -54,14 +72,23 @@ SUBMISSION_ENABLE="${SUBMISSION_ENABLE:-false}"
 MAIL_LOG_PATH="${MAIL_LOG:-/data/log/mail.log}"
 
 # --- main.cf -----------------------------------------------------------------
+# maillog_file lives under the persistent /data bind mount (architecture.md §
+# Log tailer). Postfix's default maillog_file_prefixes are only /var and
+# /dev/stdout — without /data, `postfix check` rejects the path.
 postconf -e \
 	"myhostname=${HOSTNAME_VALUE}" \
 	"maillog_file=${MAIL_LOG_PATH}" \
+	"maillog_file_prefixes=/var,/dev/stdout,/data" \
 	"mydestination=" \
 	"relayhost=" \
 	"inet_interfaces=all" \
 	"inet_protocols=all"
 
+# postlogd is mandatory whenever maillog_file is set (MAILLOG_README). Debian's
+# stock master.cf usually has it; pin it explicitly so a stripped/upgraded
+# image cannot lose the service.
+postconf -M "postlog/unix-dgram=postlog unix-dgram n - n - 1 postlogd"
+
 # This is an outbound relay: no local delivery, no per-user aliases. Empty
 # these so a misfiled recipient never gets delivered locally.
 postconf -e \
@@ -189,4 +216,12 @@ EOF
 
 # Validate the generated configuration; fail loudly if postconf produced
 # anything Postfix rejects, before the wrapper tries to start it.
-postfix check
+set +e
+check_out=$(postfix check 2>&1)
+ec=$?
+set -e
+if [ "$ec" -ne 0 ]; then
+	echo "postfix-config: postfix check failed exit $ec" >&2
+	printf '%s\n' "$check_out" >&2
+	exit "$ec"
+fi
diff --git a/deploy/docker-compose.yml b/deploy/docker-compose.yml
index dca15a1..813b3f3 100644
--- a/deploy/docker-compose.yml
+++ b/deploy/docker-compose.yml
@@ -22,7 +22,7 @@
 
 services:
   selfpost:
-    image: ghcr.io/mixeme/selfpost:0.1.0
+    image: ghcr.io/mixeme/selfpost:1.0.0
     restart: unless-stopped
     environment:
       SELFPOST_HOSTNAME: "${SELFPOST_HOSTNAME:?set the mail/panel hostname, e.g. mail.example.com}"
diff --git a/docs/development.md b/docs/development.md
index 42b2b83..d98a8f9 100644
--- a/docs/development.md
+++ b/docs/development.md
@@ -1,8 +1,7 @@
 # SelfPost — development
 
 **What this file is.** How to build, test, document, and ship changes. Open
-work for v1.x and 2.x lives in [roadmap.md](roadmap.md) (and, until the tag,
-[v1.x-closure-plan.md](v1.x-closure-plan.md)). Product boundaries:
+work for 2.x lives in [roadmap.md](roadmap.md). Product boundaries:
 [product.md](product.md). As-built layout: [architecture.md](architecture.md).
 
 ---
@@ -12,10 +11,8 @@ work for v1.x and 2.x lives in [roadmap.md](roadmap.md) (and, until the tag,
 After `/clear` or a fresh chat:
 
 1. Read this file (process, docs rules, model routing).
-2. Open [roadmap.md](roadmap.md) for open work; until `v1.0.0`, also
-   [v1.x-closure-plan.md](v1.x-closure-plan.md) for the remaining closure
-   checklist. Accepted risks — [security.md](security.md); as-built —
-   [architecture.md](architecture.md).
+2. Open [roadmap.md](roadmap.md) for open work. Accepted risks —
+   [security.md](security.md); as-built — [architecture.md](architecture.md).
 3. Skim [product.md](product.md) if scope is in doubt.
 4. Continue from the next unchecked step in the active plan.
 
@@ -31,7 +28,7 @@ not duplicated here.
 | Security, infra, file permissions, Postfix/`postqueue`, open-relay risk | **Opus** | `mail.log` under `/data`, entrypoint permissions, queue reconcile |
 | UI / JS / CSS, templates, documentation (English), README | **Sonnet** | adaptive polling, this file's Documentation section |
 | Trivial mechanics: retarget links, grep, compose bump, CHANGELOG cut | **Haiku** | Makefile / release.yml comment fixes, deleting closed plan files |
-| Security **review** (not authorship) | **Fable** | pre-release checklist pass ([implementation-plan.md](implementation-plan.md) § D — done) |
+| Security **review** (not authorship) | **Fable** | pre-release checklist (CHANGELOG `[0.5.0]` Security / [security.md](security.md) — done) |
 
 Default rule: risk-critical → Opus; UI / docs / boilerplate → Sonnet; trivial
 mechanics → Haiku. Reviewers must not be the author of the code under review.
@@ -154,20 +151,16 @@ The release image is published **only on tag** `vX.Y.Z` (not on every push to
 
 **Steps (on explicit request):**
 
-1. Close `[Unreleased]` in [CHANGELOG.md](../CHANGELOG.md).
-2. Create and push git tag `vX.Y.Z`.
+1. Close `[Unreleased]` in [CHANGELOG.md](../CHANGELOG.md) and bump the pinned
+   tag in [deploy/docker-compose.yml](../deploy/docker-compose.yml) (and any
+   local-trial image references) in the **same** release commit.
+2. Create and push git tag `vX.Y.Z` on that commit.
 3. Workflow [release.yml](../.github/workflows/release.yml) builds, e2e-gates,
    and publishes `ghcr.io/mixeme/selfpost:X.Y.Z`.
-4. Update the pinned tag in
-   [deploy/docker-compose.yml](../deploy/docker-compose.yml) in the **same**
-   commit as the tag (see [roadmap.md](roadmap.md) § «v1.x — documentation and
-   deploy tail»).
 
-Ordinary commits **do not** publish an image. Intermediate CHANGELOG version
-cuts (`0.2.0`…`0.6.0`) document history on `main`; the compose pin and the only
-git release tag may lag until an explicit image publish (today: compose
-`0.1.0`, tag `v0.0.1` — see [roadmap.md](roadmap.md) § «v1.x — documentation
-and deploy tail»).
+Ordinary commits **do not** publish an image. The compose pin and the git tag
+must match (`1.0.0` / `v1.0.0` for the first published release). Intermediate
+CHANGELOG sections (`0.2.0`…`0.6.0`) record development history before that cut.
 
 ---
 
@@ -280,13 +273,9 @@ There is no `docs/archive/` directory.
 | As-built design | [architecture.md](architecture.md) |
 | Development process (this file) | [development.md](development.md) |
 | Security requirements and accepted risks | [security.md](security.md) |
-| Internal roadmap (v1.x tail, 2.x) | [roadmap.md](roadmap.md) |
+| Internal roadmap (2.x) | [roadmap.md](roadmap.md) |
 | Release history | [CHANGELOG.md](../CHANGELOG.md) |
 
-`implementation-plan.md` remains only until the release cut (describes the
-closed release gate); delete it in the release commit. Temporary
-[v1.x-closure-plan.md](v1.x-closure-plan.md) goes away with that cut too.
-
 ### User-facing deliverables
 
 | Artefact | Role |
diff --git a/docs/guide.md b/docs/guide.md
index d06b043..e95a720 100644
--- a/docs/guide.md
+++ b/docs/guide.md
@@ -375,12 +375,11 @@ but it can look like an open port in external scans.
 ## Fixed image tag
 
 `deploy/docker-compose.yml` pins an explicit version (`ghcr.io/mixeme/selfpost:X.Y.Z`),
-deliberately never `:latest`. Until the `v1.0.0` cut the shipped pin is still
-`0.1.0` — intermediate CHANGELOG sections (`0.2.0`…`0.6.0`) record development
-cuts and do not imply a published image of that tag. Pinning matters because of
-the backup version check above: the panel binary's embedded version and the
-image tag that produced it are the same value by construction (the release CI
-stamps both from one git tag — see `.github/workflows/release.yml`), so the
-pin is what makes "restore into the same version" a checkable fact rather than
-a guess. Upgrade by bumping the tag deliberately, not by riding a moving
-target.
+deliberately never `:latest`. The current pin is `1.0.0`. Intermediate
+CHANGELOG sections (`0.2.0`…`0.6.0`) record development cuts from before that
+image was published. Pinning matters because of the backup version check above:
+the panel binary's embedded version and the image tag that produced it are the
+same value by construction (the release CI stamps both from one git tag — see
+`.github/workflows/release.yml`), so the pin is what makes "restore into the
+same version" a checkable fact rather than a guess. Upgrade by bumping the tag
+deliberately, not by riding a moving target.
diff --git a/docs/implementation-plan.md b/docs/implementation-plan.md
deleted file mode 100644
index 6a58b58..0000000
--- a/docs/implementation-plan.md
+++ /dev/null
@@ -1,32 +0,0 @@
-# План реализации: SelfPost
-
-**Статус:** линия v1.0/v1.x до тега релиза **закрыта** — предрелизная ревизия
-безопасности (§ D) выполнена 2026-08-06, релизный гейт (e2e + ревизия) открыт.
-B.1–B.3 и C.4 закрыты — as-built в [architecture.md](architecture.md),
-e2e/CI в [development.md](development.md), принятые риски в
-[security.md](security.md). Текущее состояние и следующий шаг:
-[roadmap.md](roadmap.md) и [v1.x-closure-plan.md](v1.x-closure-plan.md).
-Объём 2.x.x — [roadmap.md](roadmap.md).
-
-**Основа:** [product.md](product.md) v1.0.
-
----
-
-## D. Предрелизная ревизия безопасности — ВЫПОЛНЕНО (2026-08-06)
-
-**Проверка моделью Fable** по дифу от аудита v1.0 (Фаза 11, `bd64e80` — тега
-`v1.0.0` в репозитории нет, это его фактический эквивалент) до HEAD, плюс
-полный повторный проход по чек-листу безопасности (бывшее ТЗ 7.6, теперь
-[security.md](security.md)). Приоритеты из плана покрыты: аутентификация и
-сессии, валидация ввода, запись в конфиги/map-файлы, `os/exec`, права в
-`/data`, секреты.
-
-**Результат.** Эксплуатируемых уязвимостей (high/medium) не найдено. Одна
-находка defence-in-depth закрыта правкой до тега: логин приложения передаётся
-в `saslpasswd2` после `--`, чтобы значение, начинающееся с `-` (допустимо
-whitelist'ом), не могло быть разобрано getopt как флаг
-([internal/app/sasl.go](../internal/app/sasl.go)). Принятые риски в
-[security.md](security.md) не пополнились — существующие записи (origin-check
-fallback, отсутствие CSRF-токенов, ложно-отрицательный `bounced` при сверке
-с `postqueue`) покрывают всё найденное.
-Сводка ревизии — в записи `Security` CHANGELOG `[0.5.0]`.
diff --git a/docs/roadmap.md b/docs/roadmap.md
index 746debd..950fc52 100644
--- a/docs/roadmap.md
+++ b/docs/roadmap.md
@@ -11,84 +11,25 @@
 решением.
 
 **Основа:** [product.md](product.md) v1.0. Процесс и правила документации —
-[development.md](development.md). Несделанное для v1.0/v1.x до тега — в
-[implementation-plan.md](implementation-plan.md) и
-[v1.x-closure-plan.md](v1.x-closure-plan.md). Хвост закрытого
-документационного прохода (D1–D9) — в секции ниже.
+[development.md](development.md). История закрытых фаз v1.x — в `git log` и
+[CHANGELOG.md](../CHANGELOG.md).
 
 ---
 
 ## v1.x — хвост документации и деплоя
 
-**Статус:** не блокирует релизный тег; бывший хвост закрытого
-документационного прохода (D1–D9). Делать по желанию или в релизном коммите,
-где указано. Сводка чек-листов до тега —
-[v1.x-closure-plan.md](v1.x-closure-plan.md).
+**Статус: закрыто** в релизе `1.0.0` / git-тег `v1.0.0`
+(`ghcr.io/mixeme/selfpost:1.0.0`). План закрытия и `implementation-plan.md`
+удалены — история в git и CHANGELOG; `docs/archive/` не храним.
 
-**Тег образа в compose + git tag — один релизный коммит (R1).** В
-[deploy/docker-compose.yml](../deploy/docker-compose.yml) поле `image:` бампить
-до версии релиза **в том же коммите**, что и git-тег `vX.Y.Z` — не раньше.
-Сейчас там `0.1.0`, то есть отстаёт от целевой версии; несовпадение мешает
-только до первого выката по тегу. Сам тег — последний шаг релизного гейта:
-содержательная часть (e2e C.4, ревизия § D) закрыта, режется по явной команде
-оператора ([development.md](development.md) § Commits and release build). После
-тега `release.yml` собирает и публикует `ghcr.io/mixeme/selfpost:X.Y.Z`,
-поэтому compose с новым тегом и сам тег обязаны появиться вместе — иначе
-compose неделю ссылается на несуществующий образ.
+| Тема | Итог |
+|---|---|
+| Адаптивный опрос мониторинга | 5 с / 30 с / 0 (скрытая вкладка) в `panel.js` |
+| `mail.log` + reconcile | `/data/log/mail.log`; сверка с `postqueue -p` |
+| Docs consolidation | процесс в [development.md](development.md); README Documentation |
+| Compose pin + git tag | `1.0.0` / `v1.0.0` в одном релизном коммите |
 
-**Убрать `implementation-plan.md` — в релизном коммите.** Документ закрыт:
-уникального содержания в нём нет, § D (предрелизная ревизия безопасности)
-продублирован в [security.md](security.md) и CHANGELOG `[0.5.0]/Security`,
-а разделы B.1–B.3 и C.4 вырезаны ещё в `22f86d1`. Держится до тега только
-потому, что описывает релизный гейт, пока тот формально не закрыт. При резке
-версии:
-
-1. Удалить файл (история § D — в git и CHANGELOG; `docs/archive/` не храним).
-2. Перецелить ссылки из кода и CI ([Makefile](../Makefile),
-   [.github/workflows/release.yml](../.github/workflows/release.yml),
-   [test/e2e/main_test.go](../test/e2e/main_test.go)) — они ссылаются на «план
-   C.4», секцию, которой в файле уже нет; актуальное описание e2e — в
-   [development.md](development.md).
-3. Перецелить оставшиеся ссылки из документации на
-   [development.md](development.md) / [security.md](security.md) /
-   [roadmap.md](roadmap.md).
-4. Удалить [v1.x-closure-plan.md](v1.x-closure-plan.md) в том же или следующем
-   коммите.
-
-**Готово, когда:** тег образа в compose совпадает с релизом и рядом стоит
-git-тег `vX.Y.Z`; `implementation-plan.md` и `v1.x-closure-plan.md` удалены,
-ссылок на них в активных документах и в коде/CI не осталось.
-
-(Закрыто и действия не требует: `docs/logo` как каталога нет — критерию «либо
-содержит файлы, либо отсутствует» удовлетворяет; Quick start в
-[README.md](../README.md) тянет `docker-compose.yml` и `.env.example` с
-`raw.githubusercontent.com` — это и есть единственная площадка проекта, зеркал
-больше нет.)
-
-**Сводный индекс документации в README.** ~~Ссылки на `docs/` разбросаны по
-тексту README…~~ **Закрыто (v1.x-closure Фаза 3):** секция Documentation в
-[README.md](../README.md) — единый список operator docs + roadmap.
-
-**Опрос мониторинга у открытой, но незанятой вкладки.** ~~Скрытая вкладка уже не
-опрашивает сервер (фильтр на `htmx:beforeRequest` в
-[panel.js](../internal/web/static/panel.js)). Остаток: вкладка на переднем
-плане, с которой не работают, всё равно ходит раз в 5 с. Кандидат — адаптивный
-интервал (5 с при активности, 30 с при простое) по `htmx:afterRequest` без
-изменения `hx-trigger`. Ценность низкая: нагрузка — один SQL-запрос и рендер
-фрагмента, так что это скорее гигиена, чем экономия. Допустимый исход —
-осознанно не делать.~~ **Закрыто (v1.x-closure Фаза 1):** адаптивный интервал
-5 с / 30 с / 0 (скрытая вкладка) в `panel.js` через `data-poll`.
-
-**Send-log vs `mail.log`.** ~~Persist позиции чтения сделан (таблица
-`logtail_state`, миграция `0003`): после рестарта панели log-tailer дочитывает
-пропущенный хвост. Остаётся пересоздание контейнера — `mail.log` не в `/data` и
-теряется вместе с ним, такие строки навсегда останутся `queued`. Кандидаты, если
-станет больно: volume для лога, сверка зависших строк через `postqueue`.~~
-**Закрыто (v1.x-closure Фаза 2):** сделаны оба кандидата — `mail.log` переехал в
-`/data/log/`, а строки, чьи delivery-строки потеряны безвозвратно, закрываются
-сверкой с `postqueue -p` (grace 2 мин → `bounced`). As-built и оставшийся риск
-(ложный `bounced`): [architecture.md](architecture.md) § Log tailer,
-[security.md](security.md).
+Открытая работа дальше — только секции 2.x ниже.
 
 ---
 
diff --git a/docs/security.md b/docs/security.md
index e5e964a..dba4d94 100644
--- a/docs/security.md
+++ b/docs/security.md
@@ -94,8 +94,8 @@ Hardening сверх обязательного (security-заголовки, п
 
 ## Принятые риски
 
-Здесь, а не в [implementation-plan.md](implementation-plan.md): план — про
-несделанную работу, принятый риск — решение с условием возврата.
+Принятый риск — решение с условием возврата, а не отложенная задача из
+дорожной карты.
 
 - **`POST` без `Sec-Fetch-Site` и без `Origin` пропускается.**
   Клиент, не посылающий ни одного из двух — по-настоящему старый браузер или
@@ -171,7 +171,7 @@ Origin-проверка закрывает это без изменения ни
 
 ## Как этот список пополняется
 
-Предрелизная проверка на уязвимости ([implementation-plan.md](implementation-plan.md)
-§ D, модель Fable) закрывает каждую находку одним из двух способов: правка до
+Предрелизная проверка на уязвимости (модель Fable; история — CHANGELOG
+`[0.5.0]` Security) закрывает каждую находку одним из двух способов: правка до
 тега — либо запись сюда, с обоснованием и условием возврата, как у пунктов выше.
 Третьего варианта («посмотрели и ладно») нет.
diff --git a/docs/v1.x-closure-plan.md b/docs/v1.x-closure-plan.md
deleted file mode 100644
index 45a3958..0000000
--- a/docs/v1.x-closure-plan.md
+++ /dev/null
@@ -1,209 +0,0 @@
-# План закрытия хвоста v1.x
-
-**Статус:** в работе. **Целевой релиз:** `v1.0.0` / `ghcr.io/mixeme/selfpost:1.0.0`.
-
-**Временный файл:** после закрытия v1.x удалить (история — git + CHANGELOG). Не часть постоянного пакета docs.
-
-**Контекст:** релизный гейт по коду закрыт (B.1–B.3, C.4 e2e, § D Fable). Остаток — [roadmap.md](roadmap.md) § «v1.x — хвост документации и деплоя» + код из того же секции.
-
-**Политика docs:** `docs/archive/` не храним; устаревшие планы удаляем после переноса полезного в [development.md](development.md).
-
----
-
-## Рекомендация по модели
-
-Общее правило (переносится в development.md):
-
-| Тип работы | Модель | Примеры в этом плане |
-|------------|--------|---------------------|
-| Безопасность, инфра, права файлов, postfix/postqueue, open-relay-риски | **Opus** | mail.log в `/data`, entrypoint permissions, postqueue reconcile |
-| UI/JS/CSS, шаблоны, документация (English), README | **Sonnet** | adaptive polling, development.md § Documentation, README index |
-| Тривиальная механика: retarget ссылок, grep, compose bump, CHANGELOG cut | **Haiku** | Makefile/release.yml комментарии, удаление файлов |
-| Ревизия безопасности (**review**, не authorship) | **Fable** | не в этом плане (§ D уже выполнен) |
-
-| Фаза / коммит | Модель | Почему |
-|---------------|--------|--------|
-| 1. Polling | Sonnet | panel.js + HTMX, CSP |
-| 2. mail.log + reconcile | Opus (+ Sonnet на unit-тесты) | postfix path, logrotate, entrypoint, postqueue |
-| 3. Docs consolidation | Sonnet | development.md, README, agent-rules |
-| 4. Release `1.0.0` | Haiku / Sonnet | механика релиза, без новой логики |
-| 5. Tag / push | **Оператор** | явная команда |
-
-Сообщение коммита: трейлер `Co-Authored-By: Claude <модель> <noreply@anthropic.com>` с моделью, которая делала шаг.
-
----
-
-## Общий чек-лист прогресса
-
-- [x] **Фаза 1** — адаптивный опрос мониторинга
-- [x] **Фаза 2** — mail.log в `/data` + postqueue reconcile
-- [x] **Фаза 3** — docs: development.md, README, удаление планов и `docs/archive/`
-- [ ] **Фаза 4** — релизный коммит `1.0.0` (по явной команде)
-- [ ] **Фаза 5** — tag `v1.0.0` + push (по явной команде)
-- [ ] **Фаза 6** — выкат на прод (оператор)
-
-**Гейт перед тегом:**
-
-- [ ] `gofmt -l .` чистый
-- [ ] `go vet ./...` чистый
-- [ ] `go test ./...` чистый (Windows-падения domain/logtail — известны, не блокер)
-- [ ] `make e2e` зелёный (если Docker доступен)
-- [ ] grep: нет ссылок на удалённые docs в живых файлах
-
----
-
-## Фаза 1 — Адаптивный опрос мониторинга
-
-**Модель:** Sonnet.
-
-**Цель:** 5 s при активности, 30 s при простое; скрытая вкладка — 0 запросов. Без `hx-trigger="every 5s [expr]"` (CSP / `unsafe-eval`).
-
-### Чек-лист
-
-- [x] `status_body.html`, `mail_queue_body.html`, `system_log_body.html`, `deliveries_rows.html` — `hx-trigger="load"` + маркер polling
-- [x] `panel.js` — `lastActivity`, schedule после `htmx:afterRequest` (5s / 30s)
-- [x] `htmx:afterSwap` — реинициализация polling-элементов
-- [x] `beforeRequest` для hidden tab — оставлен
-- [x] `architecture.md` — одна строка про polling
-- [x] CHANGELOG `[Unreleased]`
-- [ ] Стенд (опционально): idle → ~30s; активность → ~5s; hidden → 0 запросов
-
----
-
-## Фаза 2 — Send-log vs `mail.log`
-
-**Модель:** Opus (infra); Sonnet (тесты).
-
-### 2.1 `mail.log` → `/data/log/mail.log`
-
-- [x] `build/postfix-config.sh` — `maillog_file` из `MAIL_LOG`
-- [x] `build/logrotate-mail.conf` — путь + `create 0640 postfix selfpost`
-- [x] `build/entrypoint.sh` — `mkdir`, права (`2750 postfix:selfpost`, файл `0640`),
-      исключение `/data/log` из общего `chown` на `panel`
-- [x] `cmd/panel/main.go` — default `MAIL_LOG`
-- [x] `internal/backup` — исключить `log/` из архива (+ тест)
-- [x] `test/e2e/mail_helpers.go` — путь в контейнере
-- [x] `guide.md` — `MAIL_LOG`, System log, бэкап `./data`; README — рост диска
-- [x] `envdoc_test` — `MAIL_LOG` в `buildScriptKeys`
-
-### 2.2 Postqueue reconcile
-
-- [x] `internal/postfix` — `QueueIDs` / парсер queue-id из `postqueue -p` + тест
-- [x] `internal/store` — `ListQueuedOlderThan(cutoff)`
-- [x] `internal/logtail` — periodic sweep (5 min), grace 2 min → `bounced`,
-      старт только после того, как tailer дочитал лог до конца
-- [x] Тесты reconcile
-
-### 2.3 Документация и риски
-
-- [x] `architecture.md` — `/data/log`, reconcile; gap «container recreate» убран
-- [x] `security.md` — риск «вечный queued» снят; на его месте — ложный `bounced`
-      и права на лог
-- [x] CHANGELOG `[Unreleased]`
-
-**Стенд (остаток, для оператора):** Docker на машине разработки недоступен —
-сборка образа и старт контейнера не проверены. Проверить при выкате: `/data/log`
-создаётся с нужными правами, панель читает `mail.log`, logrotate проворачивает
-файл, `postqueue -p` читается из-под `panel`.
-
----
-
-## Фаза 3 — Документация
-
-**Модель:** Sonnet.
-
-### 3.1 `documentation-plan.md` → development.md, затем delete
-
-- [x] development.md § **Documentation**:
-  - [x] Documentation map (без archive; история = git + CHANGELOG)
-  - [x] User-facing deliverables
-  - [x] Maintaining documentation (§3 правила)
-  - [x] Verifying docs against code (полная таблица §2)
-- [x] `architecture.md` шапка → development.md
-- [x] Удалить `documentation-plan.md`
-- [x] Retarget `roadmap.md`
-
-### 3.2 `progress.md` → development.md, затем delete
-
-- [x] development.md § **Resuming work**
-- [x] development.md § **Model routing**
-- [x] development.md § **Commits** (слить с Release build)
-- [x] development.md § **Phase closure** (roadmap, не progress)
-- [x] `agent-rules.mdc` → development.md
-- [x] Удалить `progress.md`
-- [x] Retarget все ссылки
-
-### 3.3 Удалить `docs/archive/`
-
-- [x] Удалить `docs/archive/specification-v1.0.md`
-- [x] Удалить каталог `docs/archive/`
-- [x] Убрать ссылки на archive из живых docs (CHANGELOG историю ниже 0.6.0 не трогать)
-
-### 3.4 README
-
-- [x] § Documentation: operator docs + roadmap (internal, Russian)
-- [x] Без секции Archive
-
-### 3.5 Проверка
-
-- [x] `gofmt` / `vet` / `test`
-- [x] grep живых ссылок на удалённые файлы
-
----
-
-## Фаза 4 — Релизный коммит R1
-
-**Модель:** Haiku / Sonnet. **Только по явной команде оператора.**
-
-- [ ] CHANGELOG: `[Unreleased]` → `[1.0.0] - дата`, новая `[Unreleased]`
-- [ ] `deploy/docker-compose.yml` → `ghcr.io/mixeme/selfpost:1.0.0`
-- [ ] Удалить `implementation-plan.md` (если ещё есть)
-- [ ] Makefile, `.github/workflows/release.yml`, `test/e2e/main_test.go` → development.md
-- [ ] `roadmap.md` — секция v1.x **закрыта**; убрать «переместить в archive»
-- [ ] Финальный grep ссылок
-- [ ] Удалить этот файл (`v1.x-closure-plan.md`) в том же или следующем коммите
-
----
-
-## Фаза 5 — Tag и push
-
-**Оператор.** Явная команда.
-
-```sh
-git tag v1.0.0
-git push origin v1.0.0
-```
-
-- [ ] `release.yml` — build amd64+arm64, e2e gate, push GHCR `1.0.0`
-- [ ] compose tag и git tag совпадают
-
----
-
-## Фаза 6 — Прод (оператор)
-
-- [ ] `docker compose pull` → `1.0.0`
-- [ ] Разлогин (cookie `__Host-`)
-- [ ] Reverse-proxy передаёт `Host`
-- [ ] `./data/log/` создался после upgrade
-
----
-
-## Критерий «хвост v1.x закрыт»
-
-- [ ] Все чек-листы фаз 1–4 отмечены
-- [ ] `compose` = `1.0.0`, тег `v1.0.0` в репо
-- [ ] Нет `implementation-plan.md`, `documentation-plan.md`, `progress.md`, `docs/archive/`, `v1.x-closure-plan.md`
-- [ ] Нет активных ссылок на удалённые пути
-- [ ] `development.md` — процесс + Documentation + model routing
-- [ ] `roadmap.md` — единственный internal tracker
-- [ ] Polling 5s/30s; mail.log в `/data`; reconcile; риск security снят
-
----
-
-## Разбивка коммитов
-
-1. **Polling** — panel.js, templates, architecture (+ CHANGELOG)
-2. **mail.log + reconcile** — build, logtail, store, postfix, docs (+ CHANGELOG)
-3. **Docs** — development.md, README, agent-rules; delete documentation-plan, progress, archive; retarget (+ CHANGELOG)
-4. **Release 1.0.0** — CHANGELOG cut, compose, delete implementation-plan, roadmap closure, delete `v1.x-closure-plan.md`
-5. **Tag/push** — оператор
diff --git a/test/e2e/compose.override.yml b/test/e2e/compose.override.yml
index ee6de56..6b5c38c 100644
--- a/test/e2e/compose.override.yml
+++ b/test/e2e/compose.override.yml
@@ -16,6 +16,10 @@
 
 services:
   selfpost:
+    # Crash-looping with unless-stopped makes `compose exec` fail with
+    # "Container is restarting" and hides the entrypoint/supervisord exit
+    # reason; keep the stand exited so logs stay attached to one attempt.
+    restart: "no"
     build:
       # Resolved relative to --project-directory (.stage), NOT this file's own
       # directory — compose build.context paths follow the project directory,
diff --git a/test/e2e/hostname_gate_test.go b/test/e2e/hostname_gate_test.go
index f44b0e3..b060949 100644
--- a/test/e2e/hostname_gate_test.go
+++ b/test/e2e/hostname_gate_test.go
@@ -16,6 +16,11 @@ import (
 func runEntrypoint(t *testing.T, hostnameEnv string) (output string, exitedZero bool) {
 	t.Helper()
 	dataDir := t.TempDir()
+	// Entrypoint also chmod 755 /data; mirror that here so a pre-fix image
+	// still gets a traversable bind mount under Go's 0700 TempDir.
+	if err := os.Chmod(dataDir, 0o755); err != nil {
+		t.Fatalf("chmod data dir: %v", err)
+	}
 
 	args := []string{
 		"run", "--rm",
@@ -72,13 +77,22 @@ func TestHostnameGate(t *testing.T) {
 func runEntrypointBackground(t *testing.T, hostnameEnv string) (output string, started bool) {
 	t.Helper()
 	dataDir := t.TempDir()
+	if err := os.Chmod(dataDir, 0o755); err != nil {
+		t.Fatalf("chmod data dir: %v", err)
+	}
 	certDir := t.TempDir()
 	if err := writeSelfSignedCert(certDir+"/fullchain.pem", certDir+"/privkey.pem"); err != nil {
 		t.Fatalf("generate throwaway TLS cert: %v", err)
 	}
 	name := "selfpost-e2e-hostname-check"
 	_ = exec.Command("docker", "rm", "-f", name).Run()
-	defer exec.Command("docker", "rm", "-f", name).Run()
+	defer func() {
+		// Make bind-mounted /data deletable by Go's TempDir cleanup: the panel
+		// leaves setup-token/db/opendkim owned by container UIDs.
+		_ = exec.Command("docker", "exec", name, "sh", "-c",
+			"chown -R root:root /data && chmod -R a+rwX /data").Run()
+		_ = exec.Command("docker", "rm", "-f", name).Run()
+	}()
 
 	up := exec.Command("docker", "run", "-d", "--name", name,
 		"-e", "SELFPOST_HOSTNAME="+hostnameEnv,
diff --git a/test/e2e/main_test.go b/test/e2e/main_test.go
index 2eb58ba..4135598 100644
--- a/test/e2e/main_test.go
+++ b/test/e2e/main_test.go
@@ -1,13 +1,13 @@
-// Package e2e is the hermetic container e2e gate (plan C.4): it drives the
-// shipped deploy/docker-compose.yml (plus a test-only override) exactly as an
+// Package e2e is the hermetic container e2e gate: it drives the shipped
+// deploy/docker-compose.yml (plus a test-only override) exactly as an
 // administrator and their applications would, so the class of failure unit
 // tests cannot see — broken container wiring — has one place to be caught
 // before an image is published.
 //
-// It is a separate module on purpose (see ../../docs/implementation-plan.md,
-// item C.4): `go test ./...` in the main module never pulls this in, and its
-// test-only dependencies (DKIM verification) never enter the shipped
-// binaries' build graph.
+// It is a separate module on purpose (see ../../docs/development.md):
+// `go test ./...` in the main module never pulls this in, and its test-only
+// dependencies (DKIM verification) never enter the shipped binaries' build
+// graph.
 package e2e
 
 import (
@@ -54,6 +54,10 @@ func TestMain(m *testing.M) {
 			fmt.Fprintf(os.Stderr, "\n==== logs: %s ====\n%s\n", svc, s.logs(svc))
 		}
 	}
+	// Panel/postfix-owned files under the /data bind mount outlive the
+	// container; reclaim ownership while selfpost is still up so a later
+	// prepareStage RemoveAll (or a local re-run) is not stuck on EACCES.
+	s.reclaimData()
 	s.down()
 	os.Exit(code)
 }
@@ -87,14 +91,27 @@ type scenario struct {
 func TestE2E(t *testing.T) {
 	sc := &scenario{}
 
-	t.Run("startup_processes_running", func(t *testing.T) {
+	// Ordered scenario: each step needs state from earlier ones. A failed
+	// subtest must stop the rest — otherwise sc.panel stays nil and the next
+	// step panics, masking the real failure (as seen on the v1.0.0 release CI).
+	run := func(name string, fn func(*testing.T)) {
+		if t.Failed() {
+			return
+		}
+		t.Run(name, fn)
+	}
+
+	run("startup_processes_running", func(t *testing.T) {
 		if err := checkSupervisorProcesses(h); err != nil {
 			t.Fatal(err)
 		}
+		if err := waitForPanelReady(); err != nil {
+			t.Fatal(err)
+		}
 	})
 
-	t.Run("setup_and_login", func(t *testing.T) {
-		token, err := readSetupToken(h.stageDir)
+	run("setup_and_login", func(t *testing.T) {
+		token, err := readSetupToken(h)
 		if err != nil {
 			t.Fatalf("read setup token: %v", err)
 		}
@@ -111,7 +128,7 @@ func TestE2E(t *testing.T) {
 		sc.panel = p
 	})
 
-	t.Run("add_domain_and_publish_dkim", func(t *testing.T) {
+	run("add_domain_and_publish_dkim", func(t *testing.T) {
 		id, err := sc.panel.addDomain(senderDomain)
 		if err != nil {
 			t.Fatalf("add domain: %v", err)
@@ -137,7 +154,7 @@ func TestE2E(t *testing.T) {
 		sc.zoneRecords = records
 	})
 
-	t.Run("add_application", func(t *testing.T) {
+	run("add_application", func(t *testing.T) {
 		login, password, err := sc.panel.addApplication(sc.domainID, "app1", "wildcard", "")
 		if err != nil {
 			t.Fatalf("add application: %v", err)
@@ -145,7 +162,7 @@ func TestE2E(t *testing.T) {
 		sc.appLogin, sc.appPassword = login, password
 	})
 
-	t.Run("send_verify_dkim_and_status", func(t *testing.T) {
+	run("send_verify_dkim_and_status", func(t *testing.T) {
 		token := uniqueToken("positive")
 		res := attemptSend(sendAttempt{
 			authLogin: sc.appLogin, authPassword: sc.appPassword,
@@ -179,25 +196,25 @@ func TestE2E(t *testing.T) {
 		}
 	})
 
-	t.Run("negative_level2_ratelimit_via_panel", func(t *testing.T) {
+	run("negative_level2_ratelimit_via_panel", func(t *testing.T) {
 		testLevel2RateLimit(t, sc)
 	})
-	t.Run("negative_sender_login_mismatch", func(t *testing.T) {
+	run("negative_sender_login_mismatch", func(t *testing.T) {
 		testSenderLoginMismatch(t, sc)
 	})
-	t.Run("negative_no_auth_rejected", func(t *testing.T) {
+	run("negative_no_auth_rejected", func(t *testing.T) {
 		testNoAuthRejected(t, sc)
 	})
-	t.Run("negative_foreign_relay_rejected", func(t *testing.T) {
+	run("negative_foreign_relay_rejected", func(t *testing.T) {
 		testForeignRelayRejected(t, sc)
 	})
-	t.Run("negative_journal_milter_fail_open", func(t *testing.T) {
+	run("negative_journal_milter_fail_open", func(t *testing.T) {
 		testJournalMilterFailOpen(t, sc)
 	})
-	t.Run("session_survives_restart", func(t *testing.T) {
+	run("session_survives_restart", func(t *testing.T) {
 		testSessionSurvivesRestart(t, sc)
 	})
-	t.Run("negative_level1_ratelimit", func(t *testing.T) {
+	run("negative_level1_ratelimit", func(t *testing.T) {
 		testLevel1RateLimit(t, sc)
 	})
 }
diff --git a/test/e2e/panel_client.go b/test/e2e/panel_client.go
index a42ab54..2b16495 100644
--- a/test/e2e/panel_client.go
+++ b/test/e2e/panel_client.go
@@ -7,8 +7,6 @@ import (
 	"net/http"
 	"net/http/cookiejar"
 	"net/url"
-	"os"
-	"path/filepath"
 	"regexp"
 	"strings"
 	"time"
@@ -39,22 +37,48 @@ func newPanelClient() (*panelClient, error) {
 	}}, nil
 }
 
-// readSetupToken reads the one-time setup URL SelfPost wrote to /data (bind
-// mounted at stageDir/data/setup-token) and returns just the token.
-func readSetupToken(stageDir string) (string, error) {
-	var raw []byte
-	err := waitFor("setup-token to appear", 30*time.Second, 300*time.Millisecond, func() (bool, error) {
-		b, err := os.ReadFile(filepath.Join(stageDir, "data", "setup-token"))
+// waitForPanelReady polls the host-published panel port until /healthz
+// returns 200. Supervisor reporting the panel process RUNNING is not enough:
+// the setup-token file is written in Start() before ListenAndServe, and
+// Docker's host-port publish can lag the in-container bind — either race
+// makes the first setup POST fail and leaves sc.panel nil for later steps.
+func waitForPanelReady() error {
+	client := &http.Client{Timeout: 2 * time.Second}
+	return waitFor("panel /healthz on "+panelBaseURL, 60*time.Second, 200*time.Millisecond, func() (bool, error) {
+		resp, err := client.Get(panelBaseURL + "/healthz")
 		if err != nil {
 			return false, err
 		}
-		raw = b
-		return len(b) > 0, nil
+		defer resp.Body.Close()
+		_, _ = io.Copy(io.Discard, resp.Body)
+		if resp.StatusCode != http.StatusOK {
+			return false, fmt.Errorf("status %d", resp.StatusCode)
+		}
+		return true, nil
+	})
+}
+
+// readSetupToken reads the one-time setup URL from /data/setup-token inside
+// the running selfpost container. The file is mode 0600 owned by the panel
+// UID (security.md / setup.go); on a typical CI bind mount that is not the
+// host runner's UID, so a host-side os.ReadFile returns permission denied
+// even though the panel already wrote the token (CI: setup_and_login).
+// Reading via compose exec matches docs/guide.md ("docker compose exec
+// selfpost cat /data/setup-token").
+func readSetupToken(s *stack) (string, error) {
+	var raw string
+	err := waitFor("setup-token to appear", 30*time.Second, 300*time.Millisecond, func() (bool, error) {
+		out, err := s.execIn("selfpost", "cat", "/data/setup-token")
+		if err != nil {
+			return false, err
+		}
+		raw = out
+		return strings.TrimSpace(out) != "", nil
 	})
 	if err != nil {
 		return "", err
 	}
-	u, err := url.Parse(strings.TrimSpace(string(raw)))
+	u, err := url.Parse(strings.TrimSpace(raw))
 	if err != nil {
 		return "", fmt.Errorf("parse setup token file: %w", err)
 	}
diff --git a/test/e2e/process_check.go b/test/e2e/process_check.go
index 4b8ff05..399a234 100644
--- a/test/e2e/process_check.go
+++ b/test/e2e/process_check.go
@@ -45,7 +45,10 @@ func checkSupervisorProcesses(s *stack) error {
 		}
 		return true, nil
 	})
-	return err
+	if err != nil {
+		return fmt.Errorf("%w\n==== selfpost logs ====\n%s", err, s.logs("selfpost"))
+	}
+	return nil
 }
 
 func parseSupervisorStatus(out string) map[string]string {
diff --git a/test/e2e/stack.go b/test/e2e/stack.go
index f39bb06..879af14 100644
--- a/test/e2e/stack.go
+++ b/test/e2e/stack.go
@@ -106,6 +106,14 @@ func (s *stack) down() {
 	_, _ = s.compose("down", "-v", "--remove-orphans")
 }
 
+// reclaimData chowns/chmods the /data bind mount from inside the still-running
+// selfpost container so the host test user can delete it afterwards. Files
+// written as panel/postfix (setup-token 0600, opendkim tree, sqlite) otherwise
+// leave EACCES on TempDir/stage cleanup (CI hostname-gate + prepareStage).
+func (s *stack) reclaimData() {
+	_, _ = s.execIn("selfpost", "sh", "-c", "chown -R root:root /data && chmod -R a+rwX /data")
+}
+
 // logs returns a service's combined stdout/stderr, for failure diagnostics.
 func (s *stack) logs(service string) string {
 	out, _ := s.compose("logs", "--no-color", service)
diff --git a/test/e2e/stage.go b/test/e2e/stage.go
index c036a75..3f51391 100644
--- a/test/e2e/stage.go
+++ b/test/e2e/stage.go
@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"math/big"
 	"os"
+	"os/exec"
 	"path/filepath"
 	"time"
 )
@@ -23,7 +24,7 @@ const selfpostHostname = "mail.e2e.test"
 // CoreDNS is authoritative for, and the sink-MX's dump directory. Called once
 // per run before `docker compose up`, so every run starts from a clean slate.
 func prepareStage(s *stack) error {
-	if err := os.RemoveAll(s.stageDir); err != nil {
+	if err := removeAllBestEffort(s.stageDir); err != nil {
 		return fmt.Errorf("clean stage dir: %w", err)
 	}
 	dirs := []string{"data", "certs", "dns-stage", "mail-stage"}
@@ -48,6 +49,17 @@ func prepareStage(s *stack) error {
 	return writeZone(s.stageDir, nil)
 }
 
+// removeAllBestEffort deletes path; if a previous run left container-UID files
+// on the bind mount, a root alpine one-shot removes them first.
+func removeAllBestEffort(path string) error {
+	if err := os.RemoveAll(path); err == nil {
+		return nil
+	}
+	_ = exec.Command("docker", "run", "--rm", "-v", path+":/wipe", "alpine:3.20",
+		"sh", "-c", "rm -rf /wipe/..?* /wipe/.[!.]* /wipe/*").Run()
+	return os.RemoveAll(path)
+}
+
 // writeSelfSignedCert generates a throwaway RSA key + self-signed certificate
 // for selfpostHostname, valid for a day — this stand never outlives that.
 // Postfix's smtpd_tls_security_level is "may" (opportunistic), not enforced,