Show server reception time before the message time

- Store a 'received' field (server clock) with every message
- New first column with the reception time
- Settings: time zone (browser, UTC, ~80 zones) and reception time
  format (YYYY-MM-DD - HH:MM:SS:mmm by default, ISO 8601, 12h, epoch...)
- The chosen time zone applies to every date shown

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

web/style.css

@@ -210,7 +210,7 @@ body.busy .progress::after {
 
 .row {
   display: grid;
-  grid-template-columns: 8.4rem 4.6rem minmax(5rem, 9rem) minmax(4rem, 8rem) 1fr;
+  grid-template-columns: max-content max-content 4.6rem minmax(5rem, 9rem) minmax(4rem, 8rem) 1fr;
   gap: 0 12px; align-items: baseline;
   padding: 5px 14px 5px 11px;
   border-left: 3px solid transparent;
@@ -225,6 +225,7 @@ body.busy .progress::after {
 @keyframes flash { from { background: var(--accent-soft); } to { background: transparent; } }
 
 .row time { color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
+.row time.rcv { color: var(--text); }
 .row time .ms { opacity: .6; }
 .row .host, .row .app { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .row .host { font-weight: 600; }
@@ -292,6 +293,7 @@ mark.hit { background: var(--hit); color: inherit; border-radius: 3px; padding:
   background: var(--panel); border-top: 1px solid var(--border);
   font-variant-numeric: tabular-nums;
 }
+.conn { white-space: nowrap; }
 .conn::before { content: "●"; margin-right: 6px; color: var(--muted); }
 .conn.ok::before { color: var(--sev-info); }
 .conn.ko::before { color: var(--sev-err); }
@@ -317,6 +319,19 @@ dialog::backdrop { background: rgba(10, 12, 16, .45); backdrop-filter: blur(2px)
 .set-section + .set-section { padding-top: 16px; border-top: 1px solid var(--border); }
 .set-section h3 { margin: 0 0 8px; font-size: 13px; font-weight: 650; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
 .set-section p { margin: 0; }
+.field-grid { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 8px 12px; align-items: center; }
+.field-grid label { font-size: 13px; font-weight: 550; }
+select.field {
+  height: 34px; padding: 0 30px 0 10px; min-width: 0; width: 100%;
+  border: 1px solid var(--border); border-radius: 8px;
+  background: var(--panel) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b93a1' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 9px center / 14px;
+  appearance: none; -webkit-appearance: none; font-size: 13px;
+}
+select.field:focus { outline: 0; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
+.time-preview {
+  margin: 10px 0 6px !important; padding: 8px 12px; border-radius: 8px;
+  background: var(--panel-2); font-family: var(--mono); font-size: 12.5px;
+}
 .set-section footer { display: flex; flex-wrap: wrap; gap: 8px; justify-content: space-between; margin-top: 14px; }
 
 .seg { display: inline-flex; padding: 3px; gap: 3px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; }
@@ -373,10 +388,11 @@ dialog::backdrop { background: rgba(10, 12, 16, .45); backdrop-filter: blur(2px)
   .list, .error-banner { margin-left: 16px; margin-right: 16px; }
   .row {
     grid-template-columns: auto auto 1fr;
-    grid-template-areas: "time sev host" "msg msg msg";
+    grid-template-areas: "rcv sev host" "msg msg msg";
     gap: 3px 8px; padding: 8px 12px 8px 10px;
   }
-  .row time { grid-area: time; }
+  .row time.rcv { grid-area: rcv; }
+  .row time.mt { display: none; } /* still shown in the details panel */
   .row .sev { grid-area: sev; }
   .row .host { grid-area: host; justify-self: end; max-width: 100%; }
   .row .app { display: none; }
@@ -384,6 +400,8 @@ dialog::backdrop { background: rgba(10, 12, 16, .45); backdrop-filter: blur(2px)
   .details { grid-column: 1 / -1; }
   .details dl { grid-template-columns: 1fr; }
   .details dt { margin-top: 4px; }
+  .field-grid { grid-template-columns: 1fr; gap: 4px; }
+  .field-grid select { margin-bottom: 6px; }
   .status { padding: 6px 16px; }
   .tag-row { grid-template-columns: 38px 1fr 36px; }
   .tag-row .preview { display: none; }