Commit Graph

105 Commits

Author SHA1 Message Date
mix aab35f0679 fix(panel): P3 optional items — urlquery, aria-live, confirm-without-JS note
- Deliveries fragment/pagination links urlquery-encode the domain/app
  filters instead of splicing them into the query string raw.
- The four polled regions (deliveries rows, status, mail queue, system
  log) carry aria-live="polite" so a screen reader announces refreshes.
- security.md accepted risks note that data-confirm prompts are
  JavaScript-only and why that is acceptable.

docs/plans/code-review.md P3 fully checked off; CHANGELOG updated.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-13 22:54:31 +03:00
mix 0570608738 fix(panel): GUI defects from the 1.2.x layout pass (P3)
- .flash.error now renders on the danger surface instead of the success
  one; RateLimitErr previously showed as green with red text.
- User delete goes through a confirmation page (GET/POST
  /users/{uid}/delete), matching the domain-delete pattern, instead of a
  plain submit button next to Save with no confirmation.
- Extracted the repeated DNS Host/Type/Value markup on a domain's page and
  the duplicated Settings credentials form into shared partials. No
  behaviour change.

docs/plans/code-review.md P3 checked off; CHANGELOG updated.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-13 21:50:42 +03:00
mix 1cf8bfcbe2 docs: rewrite security/operator docs for the multi-user panel (P2)
test / test (push) Has been cancelled
The CSRF ADR, guide.md, architecture.md route table, the internal/backup
package comment, roadmap/dmarc-reports admin.dmarc_report_email references,
the e2e coverage summary, and the setupManager/store package comments still
described the pre-1.2.0 single-administrator panel or stale implementation
details. Closes P2 of docs/plans/code-review.md; no behaviour change.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-13 16:15:14 +03:00
mix 4761991dd5 panel,mail: fail closed on the rate-limit race, session create and app delete
test / test (push) Has been cancelled
The level-2 limiter counted stored plus in-flight messages and reserved its own slot in two critical sections, so SMTP sessions that overlapped could each take the last free slot; tryAdmit now does both under one lock. A session that cannot be written no longer yields a cookie the browser would carry while every request bounced to /login. Deleting an application clears its SASL account before its registry row, matching domain delete, so a saslpasswd2 failure leaves a retryable application rather than an account that still authenticates.

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-13 14:50:04 +03:00
mix 6216e430e9 test(e2e): follow send-log status badge markup in scrapers
test / test (push) Has been cancelled
The deliveries_rows template wraps status in badge spans, but the e2e gate still looked for bare td cells, so send_verify_dkim_and_status timed out even when mail was delivered and logged. Add a handler regression test so go test ./... catches this drift without Docker.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-13 14:19:31 +03:00
mix a1e7e05d26 ci: gofmt files that failed the formatting workflow check
test / test (push) Has been cancelled
Whitespace-only alignment from gofmt; removes a stray BOM in web.go.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-13 12:24:34 +03:00
mix fae0068c4a panel: scope the send log to a domain admin's own domains
test / test (push) Has been cancelled
The Deliveries list narrowed the journal only when exactly one domain was assigned, so an administrator with none or with two or more read every domain's rows. The domain scope is now an IN constraint the store query carries, a filter that states no scope matches nothing, and the domain/app query parameters are validated against the principal before the query runs.

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-13 12:20:51 +03:00
mix 5caca024c3 panel: restore natural Export and Danger card layout
test / test (push) Has been cancelled
Drop the shared-baseline flex pin on .split cards; mismatched body
lengths made Export / Danger look worse than the plain stack.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-13 01:02:15 +03:00
mix 8289ed3916 panel: align paired domain settings and export actions
test / test (push) Has been cancelled
Subgrid Domain settings rows, match Address mode and trusted-IP controls,
and pin Export/Danger buttons to a shared baseline in split cards.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-13 00:39:55 +03:00
mix 958d07fcdd panel: polish rate-limit form copy and field alignment
test / test (push) Has been cancelled
Drop the app L1 backstop line, move trusted-IP help under the IP field,
shorten the domain rate-limit title, and align field-pair labels with DMARC.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-13 00:26:17 +03:00
mix f0cd804cb3 panel: tighten rate-limit and address-mode copy
Restore muted L1 backstop line, move domain limit help above Save, and drop
the duplicate Address mode field label.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-13 00:13:34 +03:00
mix 584f8cbc1c panel: clearer L1 rate-limit display and status badges
test / test (push) Has been cancelled
release / prepare (push) Has been cancelled
release / build (amd64, ubuntu-latest) (push) Has been cancelled
release / build (arm64, ubuntu-24.04-arm) (push) Has been cancelled
release / merge (push) Has been cancelled
Show the level-1 backstop as its own line and code-row, use st badges for
active/inactive domain and app limits, and fold the polish into 1.2.4.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-12 23:37:12 +03:00
mix 00e36df553 rate limit: domain ceiling for all IPs, trusted app override
Invert level-2 semantics so domain limits apply to every client IP and
application limits with trusted IPs raise the ceiling above the domain
(still capped by level 1). Panel shows L1, validates maxima, and documents
the model on Settings.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-12 23:19:51 +03:00
mix b0ebe061b5 panel: match DNS Type TXT height to Host fields
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-12 23:06:09 +03:00
mix 601e183e0c release: 1.2.3
Close CHANGELOG [Unreleased] as 1.2.3; bump the compose pin and image references. Includes domain detail layout polish and Domains add-row.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-12 22:52:19 +03:00
mix f9e259a66d panel: refine domain detail layout and drop section index
test / test (push) Has been cancelled
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-12 22:16:03 +03:00
mix 44e79c4120 panel: pair domain detail cards like Status (SPF | DMARC)
test / test (push) Has been cancelled
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-12 15:33:41 +03:00
mix 1d30605533 panel: align page URLs, titles, and headings
test / test (push) Has been cancelled
Settings moves to /settings with a 308 redirect from /account; domains, Status, Users, and user forms get matching browser titles and h1 text; backup page title reflects domain import.

Co-Authored-By: Composer <noreply@cursor.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-12 15:24:14 +03:00
mix 93cf1de3b7 panel: denser Status layout with true two-column cards
test / test (push) Has been cancelled
Pair Machine|Processes, queue|cert, and sockets|hostname; fix .split
auto-margins so cards fill half the row; trim Status prose and machine
details; drop the page section index; note panel-docs on the roadmap.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-12 00:29:34 +03:00
mix 6b8658602d panel: place mail queue and TLS cert side by side on Status
test / test (push) Has been cancelled
Widen the status page and wrap the short queue/certificate cards in
.split so the stack is shorter; other checks stay full width.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-11 23:24:24 +03:00
mix 3a520d9ec7 panel: fix Assigned domains checkbox layout on user form
test / test (push) Has been cancelled
Form-wide block labels and full-width inputs stacked the box above the
domain name; checkbox rows now share label.check and fieldset spacing.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-11 23:15:37 +03:00
mix ad014ecdc1 panel: centre status badge text optically
test / test (push) Has been cancelled
IBM Plex Mono sits low in its em square; top-heavy badge padding left
ok/warn sunk below the adjacent heading. Bottom padding is now heavier.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-11 22:58:45 +03:00
mix de6f7a88da panel: disable demote and delete for the only global admin
test / test (push) Has been cancelled
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-11 22:42:01 +03:00
mix 5985977f21 panel: hide domain pick for global administrators on user form
test / test (push) Has been cancelled
Global administrators manage every domain; the assignment checkboxes are
now hidden when that role is selected.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-11 22:37:04 +03:00
mix 9ff7514621 panel: tidy the Users nav icon
test / test (push) Has been cancelled
Two full silhouettes with staggered baselines read lopsided at 16 px; the
rear person is now a right-side crescent behind an aligned front silhouette.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-11 22:31:07 +03:00
mix ae7f5258a6 panel: use a gear for the Settings nav icon
The icon was a sun-with-rays (circle plus spokes), not a cog, despite the
1.2.0 note that Settings used a gear.

Co-Authored-By: Cursor <cursoragent@cursor.com>
2026-08-11 22:13:29 +03:00
mix 5bd632c8e0 panel: place drill-down back links under the heading
test / test (push) Has been cancelled
The user form had Back to users at the bottom of the card; all drill-down
pages now use a shared back_link template with a structural test.

Co-Authored-By: Claude <Composer 2.5> <noreply@anthropic.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-11 21:58:08 +03:00
mix f1074eb526 panel: show Settings credentials and DMARC side by side
test / test (push) Has been cancelled
Global administrators get two cards in the .split layout; domain-scoped
users keep the single narrow form.

Co-Authored-By: Claude <Composer 2.5> <noreply@anthropic.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-11 18:40:59 +03:00
mix 4b2f3880ef panel: align heading with narrow cards on signed-in pages
Settings and the user form centred the title on the 48rem measure while
.card.narrow centred on 24rem, so their left edges drifted by 12rem. Cap every
direct child of main when a narrow card is present, without shrinking the
column, so navigation stays put and login/setup stay unchanged.

Co-Authored-By: Cursor <cursoragent@cursor.com>
2026-08-11 17:34:04 +03:00
mix fae930a37a panel: give Settings, Users, and the session user distinct nav icons
test / test (push) Has been cancelled
Settings had been sharing the account silhouette with Users and the signed-in user label, so three different concepts read as the same icon. Settings now uses a gear, the user line the single-user icon, and Users a two-person group mark.

Co-Authored-By: Cursor <cursoragent@cursor.com>
2026-08-11 16:06:38 +03:00
mix 7cc499d57c panel: show the send log's status as a badge
test / test (push) Has been cancelled
The send log was the one place in the panel where a status was bare text, next
to a delivery's own page where the same value is a badge, and a domain list
where the DNS verdict is one too — so a message's outcome looked like a
different kind of fact depending on which page you read it from.

The level travels on the row rather than being worked out in the template:
deliveryLevel is the one place that decides what a status means, the delivery
page already reads it, and a second mapping written into the template or the
stylesheet would have been free to drift from it. sent is ok, deferred a
warning, bounced and rejected errors, and queued unknown — nothing has gone
wrong, nothing has been reported yet.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-11 01:23:52 +03:00
mix aeba3f8db1 panel: put the narrow pages' column back, and centre the badge text
Two fixes in one file, both from looking at the result.

Settings and the user form were narrowed to their card's width so their heading
would stop floating beside it. The shell centres the navigation column and the
page as a pair, so narrowing the page moved the navigation with it — 296px
sideways between Settings and Domains, which is the jump the width rules at the
top of this file exist to prevent, arrived at from the other direction. Every
way of aligning the heading with the card moves something else, so the geometry
goes back to what it was before the restyle, rendered against the previous
stylesheet page by page to confirm it. Those two headings are still not aligned
with their cards; that is worth fixing on its own terms rather than by making
the chrome move on every page.

And the badge text sat above the middle of its box: the badge inherited the
body's 1.5 line-height, and a lowercase word with no descender — ok, warn,
unknown — sits high in a line box that tall, which inside a border reads as
text stuck to the top. The box now hugs its line and the padding does the
centring, uneven on purpose to pay for the descender space the words rarely
use. The one that does, queued, keeps the same box.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-11 01:23:37 +03:00
mix d6e67ceb61 panel: set Sign out like the entries it stands among
The compact button rule is written for controls that cluster — several beside a
value or inside a table cell — where 0.8rem/600 is what stops four of them
shouting at once. Sign out borrows that rule for its colours, and was taking
the type with it: in the navigation column it has no cluster to belong to, so
it stood under Settings among entries set 0.95rem/400 as the one smaller,
heavier word on the column, reading as a different kind of object rather than
as the last item of the list.

Type and padding go back to the entries'. The red, the border and the tinted
background stay — those are what say it acts, and the restyle only made the
mismatch easier to see.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-11 00:59:08 +03:00
mix f44f5333b3 panel: stop the send log breaking short words across lines
test / test (push) Has been cancelled
The last cell in a row is the one the automatic table layout squeezes first,
and in the send log it holds a fixed two-word link: "Details" was being split
after "Detail" on every row. Holding that cell on one line costs the row
nothing and hands the width back to the status column, which was breaking
"deferred" into "deferre" and "d" for the same reason — the status gets the
same nowrap the timestamp already had, through a class of its own since the
cell had nothing to select on.

Both predate the restyle; they surfaced while screenshotting the send log
against a seeded journal.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-11 00:35:05 +03:00
mix 652f1fe438 panel: restyle on the mark's own palette and type
The stamp was approved on its own sheet and the panel kept the blue-on-cool-grey
it shipped with, so the mark read as pasted onto someone else's page. Brick
becomes the accent, the greys warm to paper, and the corners square up towards
the stamp's own edge.

Brick is two tokens rather than one. #7A3B2E under white text is 8.4:1, but as
text on the dark scheme's background it is about 2:1 — a link nobody can read.
So --accent-fill carries controls and --accent-text carries links and the active
navigation entry; in the light scheme they coincide, in the dark one they do not.

IBM Plex ships with the panel instead of being named and hoped for. The mark is
Plex converted to outlines, so a system stack left the panel's own name as the
only Plex on the page — and ui-monospace resolves to Consolas, SF Mono or DejaVu
Sans Mono depending on the machine, which laid the send log and mail.log tables
out differently for every operator. Three WOFF2 files, 76 KB, served from the
panel's own origin so default-src 'self' still covers them.

Two things changed shape rather than colour. Links had no rule at all and ran on
the browser's blue, invisible while the accent was blue and wrong the moment it
was not. And the column-narrowing that login and setup had by name now keys off
the narrow card itself, so Settings and the user form stop splitting their
heading from the card it belongs to.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-11 00:24:17 +03:00
mix 15baa1e5d0 feat(panel): add domain-admin role with per-domain authorization
test / test (push) Has been cancelled
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-10 23:43:59 +03:00
mix 155b721438 Split internal/web into subpackages before domain-admin growth.
test / test (push) Has been cancelled
Lay out view, auth, validate, and handlers under internal/web while keeping
the cmd/panel API unchanged; update roadmap and changelog for web-split closure.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-10 23:19:09 +03:00
mix efaf016c5f Fix DMARC guidance for send-only relays with optional rua= settings.
test / test (push) Has been cancelled
The panel now suggests policy-only DMARC by default, lets operators configure a default and per-domain report address, and DNS-checks hub _report._dmarc records. Future in-panel report ingestion is tracked as dmarc-reports in the roadmap.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-10 22:47:34 +03:00
mix 6c8bf0d3b3 legal: close AGPL packaging gaps
test / test (push) Has been cancelled
Name the copyright holder, ship NOTICE with the image, serve the licence
from the panel footer on every page, and record the vendored htmx licence.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-10 21:56:51 +03:00
mix 10c41677bd web: give the embedded static assets a content ETag
test / test (push) Has been cancelled
The assets are baked into the binary, so their FS modification times are the
zero value and http.FileServer sent no Last-Modified. With no ETag either, a
static response carried no validator at all and the browser was free to guess
how long to keep it -- which is how the panel kept showing the previous favicon
in the tab well after the new mark was deployed.

Hash each asset once at startup and serve that as a strong ETag, with
Cache-Control: no-cache so the browser keeps its copy but revalidates. An
unchanged asset then costs a bodyless 304 and a changed one is picked up on the
next load.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-09 23:35:42 +03:00
mix 236cb07769 docs: translate security.md and the last Russian source comments
security.md is linked from the README documentation table and now from
SECURITY.md, so a reader following either link landed in a Russian document
while everything around it was English. Translated in full; the requirements,
the accepted risks, and the CSRF ADR are unchanged in substance.

The reviewing model is no longer named in the text — that the pre-release
review ran, and when, is what a reader needs; who ran it is process detail
kept in development.md.

extract-cert.sh keeps its spec 10.3 quotation, translated. In sasl.go the
quotation from the closed plan is dropped rather than translated: rendered in
English it restated the sentence it hung off.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-09 22:39:53 +03:00
mix 7eb168f418 feat(panel): label the nav username with "User:"
test / test (push) Has been cancelled
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-09 21:18:49 +03:00
mix a1b6209470 feat(panel): rename Account to Settings
The nav entry, page heading, and browser title now read Settings. The
route, template name, and Active key stay `account`, so existing links
and bookmarks keep working.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-09 21:17:11 +03:00
mixeme 18880a8286 docs: spell out .spbk and .spde extensions
SelfPost backup / SelfPost domain export — in the guide, security notes,
architecture, and Backup/Export panel copy.

Co-Authored-By: Composer <noreply@cursor.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-09 00:49:43 +03:00
mixeme 1f548dfc7a fix(logtail): keep mail.log in /data and reconcile stuck rows (v1.x closure phase 2)
Move the delivery log from the ephemeral /var/log to /data/log/mail.log so
the lines that resolve a queued send-log row survive a container recreate.
postlogd writes it as postfix, the panel reads it through the selfpost group
(dir 2750, file 0640, normalised every start); backups exclude log/.

Close the residual gap with a queue sweep: rows queued for over two minutes
whose id postqueue -p no longer lists are marked bounced. The sweep waits
until the tailer has read the log to its end and does nothing when the queue
cannot be listed, so a message in flight is never touched.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-08 11:35:27 +03:00
mixeme 7e4ecf1191 feat(panel): adaptive monitoring poll intervals (v1.x closure phase 1)
Replace fixed 5 s hx-trigger polling with data-poll markers and panel.js
scheduling: 5 s while active, 30 s when idle, none when tab is hidden.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-08 11:13:02 +03:00
mixeme 5a5b642eac docs: split README into overview and operator guide for release
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-08 10:36:24 +03:00
mixeme 43841790d4 feat(panel): lay a delivery's log lines out as a table
The lines came out as one block of preformatted text, which is what the
system log page does with a tail of mail.log — right there, where the
lines are unrelated to each other and the block is the log itself. Here
they are one message's six or seven lines, and what is read off them is
the pace: the second between the connection and the banner, the ten
between DATA and the reply. Run together, every line began with a
different-width stamp and none of those numbers lined up.

So they are two columns now, when and what, the same shape the send log
itself has. logtail.SplitTimestamp takes the stamp off the head of a
line: postlogd's format, which is what this server writes, and syslog's
traditional one for a deployment that routes the log through syslogd
instead. The stamp loses its microseconds and its offset — five decimal
places are the widest part of the column and the least worth reading —
but is not converted, so the page shows the log's own wall clock rather
than a claim about which zone it was in.

A line whose head is not a stamp either parser recognises keeps its whole
text in the second column and leaves the first empty. The format is the
log's, not ours; a line we cannot split is a line we must not drop, and
the test says so.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-08 10:22:29 +03:00
mixeme cf7587754f feat(panel): give a delivery its history and its own log lines
The delivery page was a list of the fields the send-log table has no
column for, stacked one per line down the reading measure. Six values of
a few characters each — domain, application, queue id, journal id and two
timestamps — came to a page of mostly empty rows, and none of them
answered the question the log raises when a row is opened: what actually
happened to this message.

So the page states that instead. The subject heads it and the sender,
recipient and outcome are the line under it, which puts what the message
was and how it ended on the first line. Below, two columns: what the
journal recorded on the left, as a grid of tiles rather than a stack, and
on the right the two timestamps stated as the steps they stand for —
accepted and queued, then delivered, deferred, bounced, or refused before
queueing. Each step carries its status in the panel's own
ok/warn/error/unknown vocabulary, so a colour means here what it means on
the status page. A message still queued shows the report it is waiting
for as a step that has not happened, rather than dating it with the
moment the row was written.

Under both, at full width, the mail.log lines for the message's queue id.
The queue id was printed on this page as something to go and search the
system log for by hand; logtail.QueueLines does that search. It scans a
bounded tail of the current file — finding one message's lines means
reading rather than seeking — and anchors the match on the character
before the id, since queue ids are hexadecimal runs and a shorter one is
regularly the tail of a longer one. Send-log rows outlive mail.log
(retention ninety days, rotation fourteen files), so a message with
nothing left to show says so; that is the normal end state, not a fault,
and only a log that cannot be read at all is reported as one.

Two cards abreast and a block of raw log lines do not fit the reading
measure, so the page now declares itself wide — the opposite of what it
did when the column width was unified, where it was the page that stayed
prose. The mechanism is unchanged and is why the reversal costs one line:
how wide a page needs to be is the page's own property, not the
navigation entry's.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-08 10:14:27 +03:00
mixeme 142c1defbb fix(panel): lay every page out in one column width
The page column was the 48rem reading measure, which the send log, the mail
queue and the system log widened to 64rem for their tables. The navigation and
the page are centred as a pair, so that difference did not only change the
page's width: it moved the navigation column and the left edge of every card
on the way between two pages. The column is now 64rem throughout and the
measure lives inside it — a page's heading, cards, back link and version footer
are held to 48rem and centred in the column, and the pages made of data opt out
and take the column whole.

Which pages those are is declared by the page (a "wide" block in its template,
the same mechanism as the section index) rather than derived from the
navigation entry: .Active cannot tell the send log from a single delivery's
page, which is prose and now keeps the measure instead of inheriting the log's
width.

Two rules follow from centring the children rather than the cards. The heading
takes its margins as longhands, since the shorthand re-zeroed the auto side
margins and pinned it a measure's width left of the card under it; and the back
link is a block, since auto margins centre a block and do nothing for an
inline-block.

The scrollbar's width is reserved on every page as well. Without it a short
page and a long one are laid out in viewports differing by that width, which
moved the same things again, in the same direction, for a second reason.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-08 09:17:13 +03:00