fix(goals): goal status pill uses DS::Pill outline (consolidate + survive hover bg)

The status pill on the goal card used a 10%-alpha fill (bg-warning/10,
bg-green-500/10). On the card's hover state (bg-surface-hover) the fill
blended into the new background and the pill lost its tint outline.

Extend DS::Pill with a green tone and an optional icon: param (renders
a Lucide icon in place of the dot) so the same primitive can carry both
the beta marker and the goal status badges. Map Goals::StatusPillComponent
to DS::Pill outline style — transparent fill + colored border + colored
text + glyph — which is immune to any change in the surrounding card bg.

One badge primitive, light-mode contrast already fixed (the color-mix
30% darkening on text), and the card hover state no longer washes out
the status.

app/components/DS/pill.html.erb

@@ -9,7 +9,9 @@
         title="<%= title || t("ds.pill.aria_label", label: label) %>"></span>
 <% else %>
   <span class="<%= container_classes %>" style="<%= container_styles %>" title="<%= title || label %>">
-    <% if show_dot %>
+    <% if icon %>
+      <%= helpers.icon(icon, size: "xs", color: "current") %>
+    <% elsif show_dot %>
       <span class="inline-block shrink-0 rounded-full"
             style="width: <%= dot_size_px %>px; height: <%= dot_size_px %>px; background-color: <%= dot_color %>;"></span>
     <% end %>