release: 0.5.0: Pre-1.0 security review, domain-admin role, doc consolidation

A bounce could be recorded as a successful delivery. The log-tailer's
Fixed:
  - A bounce could be recorded as a successful delivery. The log-tailer's
  - Log-tailer resumes where it stopped instead of jumping to end-of-file on
  - Level-2 rate limit no longer overshoots under concurrency: messages that
Changed:
  - The project has a single public home: `github.com/mixeme/selfpost`. Codeberg
  - Code comments no longer cite the archived specification. References like
  - `docs/code-review.md` is gone. Its plan is finished — phases 0 (bar the
  - `docs/architecture.md` gained a *Code layers* section: a diagram of
  - Phase 1 doc/code hygiene (`docs/code-review.md`): removed ~30 stale
  … (1 more in CHANGELOG)
Security:
  - Pre-release security review (plan § D, model Fable, 2026-08-06): full pass
  - `saslpasswd2` argv: the application login is now passed after a `--`
Added:
  - Optional password encryption for the two secret-bearing downloads (plan
  - Domain import accepts an encrypted export: the envelope is detected by its
  - `selfpost-backup` writes encrypted archives and reads them back:
  - `TestParseDelivery` covers the exotic mail.log shapes the review asked for
  - docs: README *Encrypting a backup or export*; `docs/security.md` §
  … (14 more in CHANGELOG)
Removed:
  - docs: `security.md` — accepted risk «restore old backup revives session rows»
Changed:
  - docs: `implementation-plan.md` trimmed to the sole open v1.x gate — pre-release
  - docs: `architecture.md` — sessions (SQLite, idle renew, password change),
  - docs: `development.md` — expanded e2e stack and `release.yml` matrix workflow.
  - docs: `security.md` — accepted risk for send-log rows stuck at `queued` after
  - docs: `roadmap.md` — optional send-log / `mail.log` follow-ups under v1.x tail.
  … (10 more in CHANGELOG)

Full detail: CHANGELOG.md (0.5.0).

internal/web/templates.go

@@ -9,26 +9,30 @@ import (
 
 // templates holds the parsed page and fragment templates. Each page is parsed
 // together with the shared base layout so {{ template "base" . }} works.
-// Fragments (HTMX polling targets, spec 7.1) are parsed standalone, without
-// the layout, so they can be swapped into an existing page as an HTML snippet
-// rather than a full document. Rendering always goes through html/template,
-// which auto-escapes all interpolated data regardless (spec 7.6.7).
+// Fragments (HTMX polling targets, architecture.md § Panel HTTP surface) are
+// parsed standalone, without the layout, so they can be swapped into an
+// existing page as an HTML snippet rather than a full document. Rendering
+// always goes through html/template, which auto-escapes all interpolated data
+// regardless (security.md).
 type templates struct {
 	pages     map[string]*template.Template
 	fragments map[string]*template.Template
 }
 
 // pageFiles maps a logical page name to its template files. Every page
-// composes with layout.html; pages that embed a polling fragment (spec 7.1)
-// list that fragment's file too, so the same {{define}} block renders both
-// the initial page and the fragment's own refresh responses identically.
+// composes with layout.html; pages that embed a polling fragment
+// (architecture.md § Panel HTTP surface) list that fragment's file too, so the
+// same {{define}} block renders both the initial page and the fragment's own
+// refresh responses identically. Pages sharing a block of markup (the
+// encryption fields on the two secret downloads) list that partial the same
+// way.
 var pageFiles = map[string][]string{
 	"setup":         {"templates/setup.html"},
 	"login":         {"templates/login.html"},
 	"dashboard":     {"templates/dashboard.html"},
 	"account":       {"templates/account.html"},
-	"backup":        {"templates/backup.html"},
-	"domain_detail": {"templates/domain_detail.html"},
+	"backup":        {"templates/backup.html", "templates/encrypt_fields.html"},
+	"domain_detail": {"templates/domain_detail.html", "templates/encrypt_fields.html"},
 	"domain_delete": {"templates/domain_delete.html"},
 	"deliveries":    {"templates/deliveries.html", "templates/deliveries_rows.html"},
 	"mail_queue":    {"templates/mail_queue.html", "templates/mail_queue_body.html"},
@@ -99,7 +103,8 @@ func (s *Server) render(w http.ResponseWriter, status int, page string, data any
 }
 
 // renderFragment writes an HTMX polling fragment as a bare HTML snippet, with
-// no surrounding layout (spec 7.1: fragment endpoints return HTML, not JSON).
+// no surrounding layout (architecture.md § Panel HTTP surface: fragment
+// endpoints return HTML, not JSON).
 func (s *Server) renderFragment(w http.ResponseWriter, status int, name string, data any) {
 	tmpl, ok := s.tmpl.fragments[name]
 	if !ok {