Stage 2: file panels become a real 7.css ListView

The file list was a CSS grid of <div>s, so 7.css's listview component never
matched a single selector and Tailwind styled the whole thing. It is now the
plain <table> 7.css documents, which is what makes the Aero treatment appear.

- The column header row moved OUT of its own div and INTO <thead>: 7.css makes
  thead position:sticky, so it stays put while the body scrolls, and it has to
  be inside the same table to do that.
- Column widths moved from a computed grid-template-columns to <colgroup>,
  because 7.css sets table-layout: fixed. `gridTemplate()` is deleted.
- Selection is now `tr.highlighted` (7.css's gradient band + #aaddfa border)
  instead of bg-primary/15.
- The sort arrow was the text glyph ↑/↓ from `sortIndicator()`, which is also
  deleted; the sorted column is now `th.highlighted.indicator[.up]` and 7.css
  draws the real clip-path triangle in the header.
- Row height, padding, borders and fonts now come from 7.css, so --row-h and
  the per-cell text/color/font utilities are gone.

Two things 7.css does not cover, added in `skinfix`:
- Dark mode. listview.css hardcodes light literals (#fff, #c0c1cd, #eee and a
  white header gradient) rather than --w7-* vars, so it does NOT follow the
  hand-authored dark palette — the header labels rendered invisible, dark on
  dark. The dark arms restate those rules; light keeps 7.css's own values.
- The keyboard cursor. 7.css models selection only; Win7 drew the focused row
  with a dotted focus rectangle over it, which is what tells "cursor" apart
  from "selected" when they differ. That is `tr.is-cursor`.

Verified visually this time, not just by build log: harness screenshots in both
light and dark show the header gradient, sort triangle, cell separators,
selection band and cursor rectangle matching 7.css's reference markup. Backend
`tsc --noEmit` clean, `bun run build:ui` clean, bundle 489.83 kB (from 490.50).

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

ui/src/app/file-panel/file-panel.html

@@ -191,26 +191,8 @@
   </button>
 </div>
 
-<!-- column headers (right-click to add/remove columns) -->
-<div
-  (contextmenu)="headerContextMenu($event)"
-  [style.grid-template-columns]="gridTemplate()"
-  class="grid border-b border-border text-[11px] font-medium text-muted-foreground"
->
-  <button class="px-2 py-1 text-left hover:text-foreground" (click)="panel().toggleSort('name')">
-    {{ i18n.t('columns.name') }} {{ sortIndicator('name') }}
-  </button>
-  @for (col of visibleColumns(); track col.key) {
-    <button
-      class="px-2 py-1 hover:text-foreground"
-      [class.text-right]="col.key === 'size'"
-      [class.text-left]="col.key !== 'size'"
-      (click)="panel().toggleSort(col.key)"
-    >
-      {{ i18n.t('columns.' + col.key) }} {{ sortIndicator(col.key) }}
-    </button>
-  }
-</div>
+<!-- Column headers live INSIDE the table now (7.css makes thead sticky), so
+     there is no separate header row here — see the ListView below. -->
 
 <!-- type-to-filter bar (appears while a query is active) -->
 @if (panel().filter(); as query) {
@@ -256,67 +238,96 @@
       </div>
     </div>
   } @else {
-  @for (entry of panel().sorted(); track entry.name; let i = $index) {
-    <div
-      [attr.data-index]="i"
-      (click)="rowClick($event, i)"
-      (dblclick)="openAt(i)"
-      (contextmenu)="rowContextMenu($event, i)"
-      [style.grid-template-columns]="gridTemplate()"
-      class="grid h-(--row-h) items-center text-(length:--list-font)"
-      [class.bg-cursor-tint]="i === panel().cursor() && !isSelected(entry)"
-      [class.bg-primary/15]="isSelected(entry)"
-      [class.ring-1]="i === panel().cursor() && isActive()"
-      [class.ring-inset]="i === panel().cursor() && isActive()"
-      [class.ring-ring]="i === panel().cursor() && isActive()"
-    >
-      <div class="flex min-w-0 items-center gap-1.5 px-2">
-        <ng-icon [name]="iconFor(entry)" size="0.95rem" [class]="iconClass(entry)" />
-        <span class="truncate" [class.italic]="entry.type === 'symlink'">{{ entry.name }}</span>
-      </div>
+  <!-- 7.css ListView: a plain <table>. The header is <thead> (7.css makes it
+       position:sticky, which is why it moved in here), the sorted column is
+       .highlighted.indicator[.up], and the selection band is tr.highlighted.
+       Widths come from <colgroup> because 7.css sets table-layout:fixed. -->
+  <table>
+    <colgroup>
+      <col />
       @for (col of visibleColumns(); track col.key) {
-        @switch (col.key) {
-          @case ('size') {
-            <span class="px-2 text-right font-mono text-(length:--list-meta-font) tabular-nums text-muted-foreground">
-              {{ entry.type === 'dir' ? '—' : formatSize(entry.size) }}
-            </span>
-          }
-          @case ('mtime') {
-            <span class="px-2 font-mono text-(length:--list-meta-font) tabular-nums text-muted-foreground">
-              {{ formatDate(entry.mtime) }}
-            </span>
-          }
-          @case ('kind') {
-            <span class="truncate px-2 text-(length:--list-meta-font) text-muted-foreground">
-              {{ fileKind(entry) }}
-            </span>
-            <!-- fileKind is localized in file-panel.ts via i18n -->
-
-          }
-          @case ('rights') {
-            <span class="px-2 font-mono text-(length:--list-meta-font) text-muted-foreground">
-              {{ entry.name === '..' ? '' : formatMode(entry.mode) }}
-            </span>
-          }
-          @case ('owner') {
-            <span class="truncate px-2 font-mono text-(length:--list-meta-font) text-muted-foreground">
-              {{ entry.name === '..' ? '' : (entry.owner ?? '—') }}
-            </span>
-          }
-          @case ('group') {
-            <span class="truncate px-2 font-mono text-(length:--list-meta-font) text-muted-foreground">
-              {{ entry.name === '..' ? '' : (entry.group ?? '—') }}
-            </span>
-          }
-        }
+        <col [style.width]="col.width" />
       }
-    </div>
-  } @empty {
-    <div class="p-6 text-center text-xs text-muted-foreground">{{ i18n.t('panel.emptyDir') }}</div>
-  }
-  @if (panel().filter() && filterMatches() === 0) {
-    <div class="p-6 text-center text-xs text-muted-foreground">{{ i18n.t('panel.noMatches') }}</div>
-  }
+    </colgroup>
+    <thead>
+      <tr (contextmenu)="headerContextMenu($event)">
+        <th
+          (click)="panel().toggleSort('name')"
+          [class.highlighted]="panel().sortKey() === 'name'"
+          [class.indicator]="panel().sortKey() === 'name'"
+          [class.up]="panel().sortKey() === 'name' && panel().sortAsc()"
+        >
+          {{ i18n.t('columns.name') }}
+        </th>
+        @for (col of visibleColumns(); track col.key) {
+          <th
+            (click)="panel().toggleSort(col.key)"
+            [class.highlighted]="panel().sortKey() === col.key"
+            [class.indicator]="panel().sortKey() === col.key"
+            [class.up]="panel().sortKey() === col.key && panel().sortAsc()"
+            [style.text-align]="col.key === 'size' ? 'right' : 'left'"
+          >
+            {{ i18n.t('columns.' + col.key) }}
+          </th>
+        }
+      </tr>
+    </thead>
+    <tbody>
+      @for (entry of panel().sorted(); track entry.name; let i = $index) {
+        <tr
+          [attr.data-index]="i"
+          (click)="rowClick($event, i)"
+          (dblclick)="openAt(i)"
+          (contextmenu)="rowContextMenu($event, i)"
+          [class.highlighted]="isSelected(entry)"
+          [class.is-cursor]="i === panel().cursor() && isActive()"
+        >
+          <td>
+            <span class="flex min-w-0 items-center gap-1.5">
+              <ng-icon [name]="iconFor(entry)" size="0.95rem" [class]="iconClass(entry)" />
+              <span class="truncate" [class.italic]="entry.type === 'symlink'">{{ entry.name }}</span>
+            </span>
+          </td>
+          @for (col of visibleColumns(); track col.key) {
+            @switch (col.key) {
+              @case ('size') {
+                <td style="text-align: right">{{ entry.type === 'dir' ? '—' : formatSize(entry.size) }}</td>
+              }
+              @case ('mtime') {
+                <td>{{ formatDate(entry.mtime) }}</td>
+              }
+              @case ('kind') {
+                <!-- fileKind is localized in file-panel.ts via i18n -->
+                <td>{{ fileKind(entry) }}</td>
+              }
+              @case ('rights') {
+                <td>{{ entry.name === '..' ? '' : formatMode(entry.mode) }}</td>
+              }
+              @case ('owner') {
+                <td>{{ entry.name === '..' ? '' : (entry.owner ?? '—') }}</td>
+              }
+              @case ('group') {
+                <td>{{ entry.name === '..' ? '' : (entry.group ?? '—') }}</td>
+              }
+            }
+          }
+        </tr>
+      } @empty {
+        <tr>
+          <td [attr.colspan]="visibleColumns().length + 1" style="text-align: center; padding: 24px">
+            {{ i18n.t('panel.emptyDir') }}
+          </td>
+        </tr>
+      }
+      @if (panel().filter() && filterMatches() === 0) {
+        <tr>
+          <td [attr.colspan]="visibleColumns().length + 1" style="text-align: center; padding: 24px">
+            {{ i18n.t('panel.noMatches') }}
+          </td>
+        </tr>
+      }
+    </tbody>
+  </table>
   }
 </div>
 @if (panel().slowLoad() && !panel().connecting()) {

ui/src/app/file-panel/file-panel.ts

@@ -84,9 +84,6 @@ export class FilePanel {
     const visible = this.settings.columns();
     return COLUMN_DEFS.filter((c) => visible.includes(c.key));
   });
-  readonly gridTemplate = computed(() =>
-    ['minmax(0,1fr)', ...this.visibleColumns().map((c) => c.width)].join(' '),
-  );
 
   headerContextMenu(event: MouseEvent): void {
     event.preventDefault();
@@ -197,11 +194,6 @@ export class FilePanel {
       .filter((e) => e.name !== '..').length;
   }
 
-  sortIndicator(key: SortKey): string {
-    if (this.panel().sortKey() !== key) return '';
-    return this.panel().sortAsc() ? '↑' : '↓';
-  }
-
   commitPath(): void {
     if (this.blocked()) return;
     const value = this.pathDraft().trim();