release: 1.0.0: Public 1.0 image; delivery log; docs and SECURITY.md (incl. 1.0.1)

[1.0.0]
Added:
  - A **Delivery log** on each delivery's page (`/deliveries/{id}`): the
  - A **History** block on the same page: the journal's two timestamps stated as
Fixed:
  - Postfix config: copy TLS cert/key from the (often `:ro`, host-owned) mount
  - Postfix config: allow `maillog_file` under `/data` via
  - E2e: read `/data/setup-token` via `docker compose exec` (file is `0600`
  - Entrypoint: check `SELFPOST_HOSTNAME` before `/data` setup (so a bad identity
  - E2e gate: wait for host-published `/healthz` before panel setup, and stop
  … (3 more in CHANGELOG)
Changed:
  - Document what `.spbk` and `.spde` stand for (SelfPost backup / SelfPost domain
  - Docs aligned with the code: setup URL is `/setup/<token>` (README and
  - Full backups no longer carry `/data/log`. It is Postfix's raw log plus its
  - Monitoring screens (status, mail queue, system log, deliveries) use adaptive
  - Documentation package consolidated into `docs/development.md`: Documentation
  … (4 more in CHANGELOG)
[1.0.1]
A documentation and packaging release: no change to the mail path, the database, or the on-disk layout. Upgrading is a tag bump.
Added:
  - `SECURITY.md` — how to report a vulnerability privately (GitHub private
  - [docs/plans/](docs/plans/) — one document per agreed extension: the optional
Changed:
  - The panel's **Account** entry is now called **Settings** — nav link, page
  - The signed-in name in the panel's nav is now labelled `User:`, so it reads as
  - [docs/product.md](docs/product.md) reframes the future line: the inbound
  - [docs/security.md](docs/security.md) is now in English, matching the rest of
  - The README documentation table now points at `SECURITY.md` for reporting a
  … (2 more in CHANGELOG)
Fixed:
  - The panel's static assets are served with a content ETag and

Squashed CHANGELOG sections: [1.0.0], [1.0.1].

Full detail: CHANGELOG.md (1.0.0, 1.0.1).

internal/postfix/queue.go

@@ -3,6 +3,7 @@ package postfix
 import (
 	"fmt"
 	"os/exec"
+	"regexp"
 	"strings"
 )
 
@@ -20,3 +21,43 @@ func Queue() (string, error) {
 	}
 	return string(out), nil
 }
+
+// QueueIDs returns the set of queue ids Postfix is still holding — everything
+// in the maildrop, incoming, active, deferred and hold queues. It answers the
+// one question the log-tailer's reconcile sweep asks about a send-log row stuck
+// at "queued": is Postfix still working on this message, or has it left the
+// queue without the panel ever seeing a delivery line for it (architecture.md §
+// Log tailer)?
+//
+// An error means the queue could not be listed and therefore says nothing about
+// any message; the caller must treat it as "no information", never as an empty
+// queue.
+func QueueIDs() (map[string]struct{}, error) {
+	out, err := Queue()
+	if err != nil {
+		return nil, err
+	}
+	return parseQueueIDs(out), nil
+}
+
+// queueEntryRe matches the first line of a `postqueue -p` entry, e.g.
+//
+//	3C5B04E6C1*     446 Thu Aug  7 10:12:31  app@example.com
+//
+// The id is at the start of the line, optionally flagged '*' (in the active
+// queue) or '!' (on hold), and is followed by the message size. Requiring the
+// size is what separates an entry from the listing's other left-margin lines:
+// the '-Queue ID-' header, the '-- 5 Kbytes in 2 Requests.' trailer, a deferred
+// entry's '(connect timed out)' reason, and 'Mail queue is empty'. Recipient
+// lines are indented and never match.
+var queueEntryRe = regexp.MustCompile(`^([0-9A-Za-z]+)[*!]?\s+\d+\s`)
+
+func parseQueueIDs(listing string) map[string]struct{} {
+	ids := make(map[string]struct{})
+	for _, line := range strings.Split(listing, "\n") {
+		if m := queueEntryRe.FindStringSubmatch(line); m != nil {
+			ids[m[1]] = struct{}{}
+		}
+	}
+	return ids
+}