fix(savings_goals/show): dedupe ring labels, DS::Button banners, status-pill contrast

- progress_ring_component: drop the in-ring "$saved / of $target" lines.
  The same money pair already renders directly below the ring in
  show.html.erb (now the single source). Inside the ring keeps only
  "Saved" + percent.
- show.html.erb: replace 3 hand-rolled button_to CTAs (Paused banner
  "Resume goal", Archived banner "Restore goal", celebration card
  "Archive goal") with DS::Button so focus/hover/disabled match the
  rest of the app. variant: primary/outline, size: sm, method: :patch.
- status_pill_component: swap text-success / text-warning / text-secondary
  to text-green-700 / text-yellow-700 / text-gray-700 so all 5 light-mode
  pill variants pass WCAG 4.5:1. Local override pending the upstream DS
  token fix tracked at we-promise/sure#1736.

app/components/savings/progress_ring_component.html.erb

@@ -13,8 +13,6 @@
     <div data-donut-chart-target="defaultContent" class="flex flex-col items-center text-center">
       <span class="text-secondary text-xs mb-1"><%= t("savings_goals.show.ring.saved") %></span>
       <span class="text-3xl font-medium tabular-nums privacy-sensitive <%= percent_text_class %>"><%= percent %>%</span>
-      <span class="text-xs text-subdued tabular-nums mt-1"><%= amount_label %></span>
-      <span class="text-xs text-subdued tabular-nums">of <%= target_label %></span>
     </div>
   </div>
 </div>

app/components/savings/status_pill_component.rb

@@ -1,10 +1,15 @@
 class Savings::StatusPillComponent < ApplicationComponent
+  # Text colors here intentionally use palette steps (green-700 / yellow-700 /
+  # gray-700) rather than `text-success` / `text-warning` / `text-secondary`
+  # tokens because the functional tokens drop below WCAG 1.4.3 4.5:1 on tinted
+  # surfaces in light mode (~2.88:1 / 3.0:1 / 4.16:1). Local override only;
+  # revert once we-promise/sure#1736 lands token-level fixes.
   VARIANTS = {
-    on_track: { classes: "bg-green-500/10 text-success", icon: "circle-check" },
-    behind: { classes: "bg-yellow-500/10 text-warning", icon: "triangle-alert" },
-    reached: { classes: "bg-green-500/10 text-success", icon: "star" },
-    no_target_date: { classes: "bg-surface-inset text-secondary", icon: "infinity" },
-    paused: { classes: "bg-surface-inset text-secondary", icon: "pause" }
+    on_track: { classes: "bg-green-500/10 text-green-700", icon: "circle-check" },
+    behind: { classes: "bg-yellow-500/10 text-yellow-700", icon: "triangle-alert" },
+    reached: { classes: "bg-green-500/10 text-green-700", icon: "star" },
+    no_target_date: { classes: "bg-surface-inset text-gray-700", icon: "infinity" },
+    paused: { classes: "bg-surface-inset text-gray-700", icon: "pause" }
   }.freeze
 
   def initialize(goal:)

app/views/savings_goals/show.html.erb

@@ -83,10 +83,13 @@
     <%= render DS::Alert.new(variant: "info", title: t("savings_goals.show.paused_banner.title")) do %>
       <p class="text-secondary"><%= t("savings_goals.show.paused_banner.body") %></p>
       <div class="mt-2">
-        <%= button_to t("savings_goals.show.paused_banner.resume_cta"),
-                      resume_savings_goal_path(@savings_goal),
-                      method: :patch,
-                      class: "inline-flex items-center gap-1 rounded-md px-3 py-2 text-sm font-medium text-inverse bg-inverse hover:bg-inverse-hover" %>
+        <%= render DS::Button.new(
+          text: t("savings_goals.show.paused_banner.resume_cta"),
+          href: resume_savings_goal_path(@savings_goal),
+          variant: "primary",
+          size: "sm",
+          method: :patch
+        ) %>
       </div>
     <% end %>
   <% elsif @savings_goal.archived? %>
@@ -95,10 +98,13 @@
       <p class="text-secondary"><%= t("savings_goals.show.archived_banner.body") %></p>
       <% if @savings_goal.may_unarchive? %>
         <div class="mt-2">
-          <%= button_to t("savings_goals.show.archived_banner.restore_cta"),
-                        unarchive_savings_goal_path(@savings_goal),
-                        method: :patch,
-                        class: "inline-flex items-center gap-1 rounded-md px-3 py-2 text-sm font-medium text-inverse bg-inverse hover:bg-inverse-hover" %>
+          <%= render DS::Button.new(
+            text: t("savings_goals.show.archived_banner.restore_cta"),
+            href: unarchive_savings_goal_path(@savings_goal),
+            variant: "primary",
+            size: "sm",
+            method: :patch
+          ) %>
         </div>
       <% end %>
     <% end %>
@@ -149,10 +155,13 @@
         <p class="text-sm text-secondary mt-1 max-w-md"><%= t(".celebration.body", amount: @savings_goal.target_amount_money.format) %></p>
         <% if @savings_goal.may_archive? %>
           <div class="mt-4">
-            <%= button_to t(".celebration.archive_cta"),
-                          archive_savings_goal_path(@savings_goal),
-                          method: :patch,
-                          class: "inline-flex items-center gap-1 rounded-md px-3 py-2 text-sm font-medium text-primary border border-secondary bg-transparent hover:bg-surface-hover" %>
+            <%= render DS::Button.new(
+              text: t(".celebration.archive_cta"),
+              href: archive_savings_goal_path(@savings_goal),
+              variant: "outline",
+              size: "sm",
+              method: :patch
+            ) %>
           </div>
         <% end %>
       </div>