design: local-time - times without UTC, the zone on Settings

Agreed with the owner on 2026-10-13 (the panel in a chosen zone, "today"
that zone's day, the UTC labels gone) and settled on 2026-10-16/17: the
container runs in his zone ("Контейнер в моем поясе") - TZ in .env, read
by every program at its start - so the zone is shown on Settings, not
chosen there ("Да"), as the level-1 limit is.

Every mockup loses "UTC": the column heads are Time, Received, Held,
Arrived; a stamp is a date and a time. Settings gets box 05, Time zone,
read-only: the zone, its offset, where it is set, and that every time and
day of the panel is that zone's, as are mail.log's stamps. The help's
Settings topic says so. outlines.json: settings gains the box. check.py: 0
violations.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/assets/panel-redesign/panel/in-log.html

@@ -86,7 +86,7 @@
         <a class="sp-help" href="help.html#inbound-log" title="What the decisions mean"><i class="ti ti-help-circle"></i></a>
       </div>
       <div class="table-container"><table class="table is-fullwidth is-hoverable">
-        <thead><tr><th>Time, UTC</th><th>From</th><th>To</th><th>Subject</th><th>Decision</th><th>Upstream</th><th></th></tr></thead>
+        <thead><tr><th>Time</th><th>From</th><th>To</th><th>Subject</th><th>Decision</th><th>Upstream</th><th></th></tr></thead>
         <tbody>
           <tr><td class="sp-mono sp-muted sp-nowrap sp-small">09-21 14:00:31</td><td>ci@<wbr>builds.example<br><span class="sp-mono sp-muted sp-small">192.0.2.90</span></td><td>dev@<wbr>lists.example.org</td><td class="sp-clip">[ci] nightly build passed</td><td><button type="button" class="tag is-success is-light" popovertarget="why-7">accept</button><div class="sp-sheet" id="why-7" popover><div class="sp-sheet-in"><div class="sp-sheet-head"><span class="tag is-success is-light">accept</span><h2>Why</h2><button type="button" popovertarget="why-7" popovertargetaction="hide" aria-label="Close"><i class="ti ti-x"></i></button></div><div class="sp-sheet-body"><div class="table-container"><table class="table is-fullwidth"><tbody><tr><th>Decided by</th><td>rspamd</td></tr><tr><th>Verdict</th><td>no action, score 1.10 / 15.00</td></tr><tr><th>Subject</th><td>[ci] nightly build passed</td></tr></tbody></table></div></div></div></div></td><td><span class="tag is-light">queued</span></td><td class="sp-actions"><a href="in-filter-lists.html">Deny sender</a></td></tr>
           <tr><td class="sp-mono sp-muted sp-nowrap sp-small">09-21 14:00:18</td><td>t.berg@<wbr>uni.example<br><span class="sp-mono sp-muted sp-small">192.0.2.77</span></td><td>dev@<wbr>lists.example.org</td><td class="sp-clip">Re: [dev] patch series v3</td><td><button type="button" class="tag is-success is-light" popovertarget="why-1">accept</button><div class="sp-sheet" id="why-1" popover><div class="sp-sheet-in"><div class="sp-sheet-head"><span class="tag is-success is-light">accept</span><h2>Why</h2><button type="button" popovertarget="why-1" popovertargetaction="hide" aria-label="Close"><i class="ti ti-x"></i></button></div><div class="sp-sheet-body"><div class="table-container"><table class="table is-fullwidth"><tbody><tr><th>Decided by</th><td>rspamd</td></tr><tr><th>Verdict</th><td>no action, score 0.40 / 15.00</td></tr><tr><th>Subject</th><td>Re: [dev] patch series v3</td></tr></tbody></table></div></div></div></div></td><td><button type="button" class="tag is-success is-light" popovertarget="up-1">sent</button><div class="sp-sheet" id="up-1" popover><div class="sp-sheet-in"><div class="sp-sheet-head"><span class="tag is-success is-light">sent</span><h2>Upstream</h2><button type="button" popovertarget="up-1" popovertargetaction="hide" aria-label="Close"><i class="ti ti-x"></i></button></div><div class="sp-sheet-body"><div class="table-container"><table class="table is-fullwidth"><tbody><tr><th>Host</th><td class="sp-mono sp-small">mx.upstream.example[198.51.100.5]:25</td></tr><tr><th>Reply</th><td class="sp-mono sp-small">250 2.0.0 Ok: queued as CE05D10261D</td></tr><tr><th>At</th><td class="sp-mono sp-small">09-21 14:00:19</td></tr></tbody></table></div></div></div></div></td><td class="sp-actions"><a href="in-filter-lists.html">Deny sender</a></td></tr>