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/PinInput.wrn

@@ -140,21 +140,21 @@ component PinInput {
 
     .wrn-next__pin-heading legend {
       padding: 0;
-      font-size: 0.82em;
-      font-weight: 700;
+      font-size: 0.8125rem;
+      font-weight: 600;
     }
 
     .wrn-next__pin-clear {
       display: inline-flex;
       align-items: center;
-      gap: 0.35rem;
+      gap: 0.3rem;
       padding: 0;
       border: 0;
-      color: var(--wrn-component-color);
+      color: var(--wrn-color-text-muted);
       background: transparent;
       font: inherit;
-      font-size: 0.7em;
-      font-weight: 750;
+      font-size: 0.75rem;
+      font-weight: 550;
       cursor: pointer;
     }
 
@@ -177,24 +177,23 @@ component PinInput {
     }
 
     .wrn-next--pin-input .wrn-next__pin-cells input {
-      flex: 0 1 2.5rem;
-      width: 2.5rem;
-      height: var(--wrn-control-height, 2.5rem);
+      flex: 0 1 2.75rem;
+      width: 2.75rem;
+      height: 3rem;
       min-width: 0;
       padding: 0;
-      border: 1px solid var(--wrn-color-border);
+      border: 1px solid var(--wrn-color-input-border, var(--wrn-color-border));
       border-radius: var(--wrn-radius-sm);
       color: var(--wrn-color-text);
-      background: var(--wrn-color-bg);
+      background: var(--wrn-color-input-background, var(--wrn-color-surface));
+      box-shadow: inset 0 1px 2px rgb(0 0 0 / 0.05);
       font: inherit;
-      font-size: 1rem;
+      font-family: var(--wrn-font-mono, monospace);
+      font-size: 1.125rem;
       font-weight: 600;
       text-align: center;
       caret-color: var(--wrn-component-color);
-      transition:
-        border-color var(--wrn-motion-base) var(--wrn-ease-standard),
-        box-shadow var(--wrn-motion-base) var(--wrn-ease-standard),
-        transform var(--wrn-motion-fast) var(--wrn-ease-standard);
+      transition: border-color var(--wrn-motion-base) var(--wrn-ease-standard), box-shadow var(--wrn-motion-base) var(--wrn-ease-standard);
     }
 
     .wrn-next--pin-input .wrn-next__pin-cells input::placeholder {
@@ -206,7 +205,7 @@ component PinInput {
       border-color: var(--wrn-component-color);
       outline: 0;
       box-shadow: 0 0 0 3px color-mix(in srgb, var(--wrn-component-color) 18%, transparent);
-      transform: translateY(-1px);
+      transform: none;
     }
 
     .wrn-next--pin-input .wrn-next__pin-cells input:disabled,
@@ -216,14 +215,14 @@ component PinInput {
     }
 
     .wrn-next__pin-separator {
-      color: var(--wrn-color-muted);
-      font-size: 1.1rem;
-      font-weight: 800;
+      color: var(--wrn-color-border-strong, var(--wrn-color-muted));
+      font-size: 1rem;
+      font-weight: 600;
     }
 
     .wrn-next--pin-input[data-complete="true"] .wrn-next__pin-cells input {
-      border-color: color-mix(in srgb, var(--wrn-component-color) 72%, var(--wrn-color-border));
-      background: color-mix(in srgb, var(--wrn-component-color) 7%, var(--wrn-color-bg));
+      border-color: color-mix(in srgb, var(--wrn-color-success) 60%, var(--wrn-color-border));
+      background: color-mix(in srgb, var(--wrn-color-success) 6%, var(--wrn-color-input-background, var(--wrn-color-surface)));
     }
 
     @media (max-width: 480px) {
@@ -303,7 +302,7 @@ component PinInput {
 
         .wrn-component p {
           margin: 0;
-          color: var(--wrn-color-muted);
+          color: var(--wrn-color-text-muted, var(--wrn-color-muted));
           line-height: 1.6;
         }
   }