Card layout for tables on phones and tablets; fit terminal bar

Sideways-scrolling tables only showed a few of the 11 columns at a time on
a phone or iPad. Below 1100px (where the nav already collapses) each row
now renders as a card: the device as the title and every other column as
a labelled line, one card per row on phones and two or more on tablets.

- web/mobile.js copies column names onto cells (data-label) for the cards
  and re-applies them as the dashboard re-renders; no-op on wide screens
- Column filters fold behind a "Show filters" button with an active count
- Custom View keeps its sort/filter header as a strip of chips
- Terminal: Follow and the "your actions (simulated)" legend move into the
  terminal window's title bar; tabs read "Server" / "Worker" on phones, so
  LIVE, the legend and Follow are all visible on small screens

web/mobile.css

@@ -1,9 +1,117 @@
 /*
- * Small-screen layout for the dashboard (phones, small tablets, split windows).
+ * Small-screen layout for the dashboard (phones, tablets, narrow windows).
  * Loaded after the page's own <style> block. Desktop layouts are untouched: every rule
  * here is inside a max-width media query.
  */
 
+/* ---------------------------------------------------------------------------------------
+ *  Card view for data tables (phones and tablets)
+ *
+ *  An 11-column table can't be read on a phone or an iPad in portrait, and sideways
+ *  scrolling only ever shows a few columns. Below 1100px (where the nav also collapses)
+ *  each row becomes a card: the device name as its title and every other column as a
+ *  "label: value" line. mobile.js copies the column names onto the cells. Cards flow one
+ *  per row on phones and two or more on tablets. The column filter row becomes a filter
+ *  panel above the cards.
+ * ------------------------------------------------------------------------------------- */
+@media (max-width: 1100px) {
+    .table-wrapper { overflow-x: visible !important; }
+
+    table.master-table {
+        display: block; width: 100% !important; min-width: 0 !important; max-width: none !important;
+        table-layout: auto; font-size: 0.9em;
+    }
+    table.master-table colgroup { display: none; }
+    table.master-table thead { display: block; }
+    table.master-table thead tr.card-label-row,
+    table.master-table thead tr.card-aux-row { display: none; }
+
+    /* Filters: a wrapping panel of labeled controls */
+    table.master-table thead tr.filter-row {
+        display: flex; flex-wrap: wrap; gap: 8px 10px; padding: 10px 12px;
+        background: rgba(0,0,0,0.15); border-bottom: 1px solid var(--border-color);
+    }
+    table.master-table thead tr.filter-row th {
+        display: block; flex: 1 1 150px; min-width: 0; width: auto !important;
+        padding: 0; border: 0; background: transparent;
+    }
+    table.master-table thead tr.filter-row th:empty,
+    table.master-table thead tr.filter-row th[data-label=""] { display: none; }
+    table.master-table thead tr.filter-row th::before {
+        content: attr(data-label); display: block; margin-bottom: 3px;
+        font-size: 0.78em; font-weight: 600; color: var(--text-muted);
+    }
+
+    /* Custom View keeps its header (sort / filter / remove buttons) as a strip of chips */
+    #table-custom thead tr.card-label-row {
+        display: flex; flex-wrap: wrap; gap: 6px; padding: 10px 12px;
+        background: var(--table-header-bg);
+    }
+    #table-custom thead tr.card-label-row th {
+        display: flex; align-items: center; gap: 4px; width: auto !important; min-width: 0 !important;
+        padding: 4px 8px; border: 1px solid rgba(255,255,255,0.2); border-radius: 999px;
+        position: static; white-space: nowrap;
+    }
+
+    /* Rows -> cards */
+    table.master-table tbody {
+        display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 330px), 1fr));
+        gap: 10px; padding: 10px;
+    }
+    table.master-table tbody tr {
+        display: block; position: relative;
+        background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 8px;
+        padding: 10px 12px; box-shadow: 0 2px 5px rgba(0,0,0,0.25);
+    }
+    /* Label in a fixed left gutter, value flows to its right (so a value made of several
+       pieces - a name plus its copy icon, a list with links - stays one value) */
+    table.master-table tbody td {
+        display: block; position: relative; min-height: 1.3em;
+        padding: 6px 0 6px 9.2em; border: 0; border-bottom: 1px solid var(--border-light);
+        width: auto !important; max-width: none !important; height: auto !important;
+        white-space: normal; overflow: visible; text-overflow: clip; overflow-wrap: anywhere;
+    }
+    table.master-table tbody td::before {
+        content: attr(data-label); position: absolute; left: 0; top: 6px; width: 8.6em;
+        font-size: 0.85em; font-weight: 600; color: var(--text-muted); line-height: 1.35;
+    }
+    table.master-table tbody td:last-child { border-bottom: 0; }
+
+    /* First column (the device) is the card's title */
+    table.master-table tbody td:first-child {
+        display: block; font-size: 1.12em; font-weight: 700; padding: 0 34px 8px 0; min-height: 0;
+    }
+    table.master-table tbody td:first-child::before { content: none; }
+
+    /* The per-row copy button has no column name: pin it to the card's corner */
+    table.master-table tbody td[data-label=""]:not(:first-child) {
+        position: absolute; top: 8px; right: 8px; display: block; padding: 0; border: 0;
+    }
+    table.master-table tbody td[data-label=""]::before { content: none; }
+
+    /* "No devices" style rows span the full card */
+    table.master-table tbody td[colspan] { display: block; text-align: center; border: 0; padding: 6px 0; }
+
+    /* Filters fold away behind a button (added by mobile.js) */
+    .card-filter-toggle {
+        display: inline-flex; align-items: center; gap: 6px; margin: 10px 12px 0;
+        background: transparent; color: var(--text-main); border: 1px solid var(--border-color);
+        border-radius: 6px; padding: 6px 12px; font: inherit; font-size: 0.85em; cursor: pointer;
+    }
+    .card-filter-toggle .count {
+        background: #3498db; color: #fff; border-radius: 999px; padding: 0 7px; font-size: 0.85em;
+    }
+    table.master-table:not(.show-filters) thead tr.filter-row { display: none; }
+    table.master-table.show-filters thead tr.filter-row { margin-top: 10px; }
+}
+@media (min-width: 1101px) {
+    .card-filter-toggle { display: none; }
+}
+@media (max-width: 420px) {
+    table.master-table tbody td { padding-left: 7.8em; }
+    table.master-table tbody td::before { width: 7.2em; }
+}
+
 @media (max-width: 900px) {
     .main { padding: 14px; }
     .main h1 { font-size: 1.55em; }
@@ -11,18 +119,8 @@
     /* Page headers with an action button (Workbench, All Devices) wrap instead of squeezing */
     .header-row { flex-wrap: wrap; gap: 10px; }
 
-    /* Data tables keep readable column widths and scroll sideways inside their card */
-    .table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; overscroll-behavior-x: contain; }
-    .master-table:not(#table-custom) { min-width: 880px; }
-    #table-software { min-width: 760px; }
-    .stack-box .master-table { min-width: 760px; }
-
-    /* Group headers: title on one line, copy buttons wrap underneath, and stay in view
-       while the table under them scrolls sideways */
-    .group-header {
-        flex-wrap: wrap; gap: 8px; font-size: 1.05em;
-        position: sticky; left: 0;
-    }
+    /* Group headers: title on one line, copy buttons wrap underneath */
+    .group-header { flex-wrap: wrap; gap: 8px; font-size: 1.05em; }
     .group-header > div { flex-wrap: wrap; }
     .copy-table-btn { padding: 5px 9px; font-size: 0.78em; }