feat(ui): component redesign pass and fixes, release ui 0.8.87

Redesign
- Shared field foundation rules (duplicated across 15 form components and
  emitted globally) are now identical everywhere, so later copies no longer
  silently override earlier redesigns.
- Drawn checkbox and radio controls, white switch thumbs (the thumb was the
  text colour, a black blob in light mode), recessed field wells, keycap
  actions in Modal, Drawer, Popover, Toaster, Pagination, Stepper, DataTable.
- Menus (Dropdown, ContextMenu, Popover, Select dropdown, Navbar panels) share
  one flat raised panel with neutral hover rows and mono section labels.
- Alerts with an accent rail and icon chip; card headers without the grey
  band; accordion, collapse, list, list group, timeline, stats, metrics,
  chat, skeleton, avatar group, clipboard, splitter, section, sidebar,
  navbar and upload progress restyled.
- Chart rebuilt: nice y-axis ticks, gridlines, rounded bars, line and area
  modes, hover tooltips, hidden series leave the scale.

Fixes
- Checkbox and radio labels toggle their input again (empty for="" broke it).
- TimePicker kept every clicked time pressed; only the chosen hour and
  minute are pressed now, and nothing is pressed before a value exists.
- ColorPicker hex readout now follows the picked colour.
- Disabled FileInput no longer shows the native file-input text.
- Date and time panels float instead of pushing content.
- ContextMenu opened at the pointer closes on scroll.
- Drawer left/top/bottom placements slide from their own edge again.
- Image-only Card no longer renders an empty body strip.
- Timeline supports item.time, current/upcoming states, sizes and
  compact/alternate variants; showcase demos use distinct variants.
- ChatBubble: delivery receipts (sending/sent/delivered/read/failed/error)
  and meta aligned to its bubble.

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

packages/ui/components/Sidebar.wrn

@@ -319,19 +319,24 @@ component Sidebar {
 
     .wrn-sidebar__rail {
       width: 100%;
+      padding: 0.5rem;
+      border: 1px solid var(--wrn-color-border);
+      border-radius: var(--wrn-radius);
+      background: var(--wrn-color-surface-soft, var(--wrn-color-surface));
     }
 
     .wrn-sidebar__list,
     .wrn-sidebar__sublist {
       display: grid;
-      gap: 0.1rem;
+      gap: 0.125rem;
       margin: 0;
       padding: 0;
       list-style: none;
     }
 
     .wrn-sidebar__sublist {
-      margin-inline-start: 0.85rem;
+      margin-inline-start: 1rem;
+      margin-block: 0.125rem;
       padding-inline-start: 0.5rem;
       border-inline-start: 1px solid var(--wrn-color-border);
     }
@@ -346,6 +351,7 @@ component Sidebar {
       width: 1.05rem;
       height: 1.05rem;
       flex-shrink: 0;
+      color: var(--wrn-color-text-subtle, var(--wrn-color-text-muted));
     }
 
     .wrn-sidebar__entry[data-group="true"] + .wrn-sidebar__entry {
@@ -353,28 +359,32 @@ component Sidebar {
     }
 
     .wrn-sidebar__heading {
-      margin: 0.9rem 0 0.35rem;
-      color: var(--wrn-color-text-muted);
-      font-size: 0.7rem;
-      font-weight: 700;
+      margin: 0.875rem 0.625rem 0.375rem;
+      color: var(--wrn-color-text-subtle, var(--wrn-color-text-muted));
+      font-family: var(--wrn-font-mono, monospace);
+      font-size: 0.65rem;
+      font-weight: 600;
       letter-spacing: 0.08em;
       text-transform: uppercase;
     }
 
     .wrn-sidebar__link {
+      position: relative;
       display: flex;
       align-items: center;
       gap: 0.5rem;
-      padding: 0.45rem 0.6rem;
-      border-radius: var(--wrn-radius-sm);
+      min-height: 2rem;
+      padding: 0.375rem 0.625rem;
+      border-radius: calc(var(--wrn-radius-sm) - 1px);
       color: var(--wrn-color-text-muted);
-      font-size: 0.88rem;
-      font-weight: 600;
+      font-size: 0.8125rem;
+      font-weight: 550;
       text-decoration: none;
+      transition: background-color 120ms ease, color 120ms ease;
     }
 
     .wrn-sidebar__link:hover {
-      background: var(--wrn-color-surface-soft);
+      background: var(--wrn-color-surface-muted, var(--wrn-color-surface-soft));
       color: var(--wrn-color-text);
     }
 
@@ -384,8 +394,10 @@ component Sidebar {
     }
 
     .wrn-sidebar__link[data-active="true"] {
-      background: color-mix(in srgb, var(--sidebar-accent) 16%, transparent);
-      color: var(--sidebar-accent);
+      background: var(--wrn-color-surface-raised, var(--wrn-color-surface));
+      color: var(--wrn-color-text);
+      font-weight: 600;
+      box-shadow: 0 0 0 1px var(--wrn-color-border), var(--wrn-shadow-1);
     }
 
     .wrn-sidebar__link[aria-disabled="true"] {
@@ -399,24 +411,32 @@ component Sidebar {
 
     .wrn-sidebar__badge {
       margin-inline-start: auto;
-      padding: 0.05rem 0.4rem;
+      min-width: 1.25rem;
+      padding: 0.0625rem 0.4rem;
       border-radius: 999px;
-      background: color-mix(in srgb, var(--sidebar-accent) 16%, transparent);
-      color: var(--sidebar-accent);
-      font-size: 0.72rem;
+      background: var(--wrn-color-surface-muted, var(--wrn-color-surface-2));
+      color: var(--wrn-color-text-muted);
+      font-size: 0.68rem;
+      font-weight: 650;
+      font-variant-numeric: tabular-nums;
+      text-align: center;
     }
 
     .wrn-sidebar__launcher {
       display: none;
       align-items: center;
       gap: 0.5rem;
-      padding: 0.45rem 0.7rem;
+      min-height: 2.25rem;
+      padding: 0 0.75rem;
       border: 1px solid var(--wrn-color-border);
+      border-bottom-color: var(--wrn-color-border-strong, var(--wrn-color-border));
       border-radius: var(--wrn-radius-sm);
-      background: var(--wrn-color-surface);
+      background: linear-gradient(180deg, var(--wrn-color-surface), var(--wrn-color-surface-soft, var(--wrn-color-surface)));
+      box-shadow: var(--wrn-shadow-1);
       color: var(--wrn-color-text);
       font: inherit;
-      font-size: 0.9rem;
+      font-size: 0.8125rem;
+      font-weight: 600;
       cursor: pointer;
     }
 
@@ -443,5 +463,24 @@ component Sidebar {
         display: none;
       }
     }
+  
+    .wrn-sidebar__link[data-active="true"]::before {
+      position: absolute;
+      inset-block: 0.4rem;
+      inset-inline-start: -0.5rem;
+      width: 3px;
+      border-radius: 0 3px 3px 0;
+      background: var(--sidebar-accent);
+      content: "";
+    }
+  
+    .wrn-sidebar__link[data-active="true"] .wrn-sidebar__icon {
+      color: var(--sidebar-accent);
+    }
+  
+    .wrn-sidebar__link[data-active="true"] .wrn-sidebar__badge {
+      background: color-mix(in srgb, var(--sidebar-accent) 14%, var(--wrn-color-surface));
+      color: var(--wrn-color-primary-text, var(--sidebar-accent));
+    }
   }
 }