feat: notification filter controls pill buttons (#1718)

## Summary
- replace the notification type dropdown with inline pill buttons for
quick filtering
- expose accessible role and pressed state on the new filter buttons

## Testing
- pnpm --filter @unraid/web lint

------
https://chatgpt.com/codex/tasks/task_e_68d184ad60348323b60c9b8e19146025

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Notifications sidebar now uses a pill-style button group instead of a
dropdown for filtering by importance/type.
  * One-tap switching applies filters instantly for faster navigation.
* Active filters are more visible, improving clarity and accessibility.
* No changes to existing workflows or public behavior; settings and
filtering semantics remain unchanged.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

web/src/components/Notifications/Sidebar.vue

@@ -4,7 +4,6 @@ import { useMutation, useQuery, useSubscription } from '@vue/apollo-composable';
 
 import {
   Button,
-  Select,
   Sheet,
   SheetContent,
   SheetHeader,
@@ -46,9 +45,8 @@ const { mutate: recalculateOverview } = useMutation(resetOverview);
 const { confirm } = useConfirm();
 const importance = ref<Importance | undefined>(undefined);
 
-const filterItems = [
-  { type: 'label' as const, label: 'Notification Types' },
-  { label: 'All Types', value: 'all' },
+const filterOptions: Array<{ label: string; value?: Importance }> = [
+  { label: 'All Types' },
   { label: 'Alert', value: Importance.ALERT },
   { label: 'Info', value: Importance.INFO },
   { label: 'Warning', value: Importance.WARNING },
@@ -99,8 +97,6 @@ onNotificationAdded(({ data }) => {
   if (notif.timestamp) {
     latestNotificationTimestamp.value = notif.timestamp;
   }
-  // probably smart to leave this log outside the if-block for the initial release
-  console.log('incoming notification', notif);
   if (!globalThis.toast) {
     return;
   }
@@ -203,32 +199,46 @@ const prepareToViewNotifications = () => {
             </TabsContent>
           </div>
 
-          <div class="mt-2 flex items-center justify-between gap-2 px-3">
-            <Select
-              :items="filterItems"
-              placeholder="Filter By"
-              class="h-8 px-3 text-sm"
-              @update:model-value="
-                (val: unknown) => {
-                  const strVal = String(val);
-                  importance = strVal === 'all' || !strVal ? undefined : (strVal as Importance);
-                }
-              "
-            />
-            <TooltipProvider>
-              <Tooltip :delay-duration="0">
-                <TooltipTrigger as-child>
-                  <a href="/Settings/Notifications">
-                    <Button variant="ghost" size="sm" class="h-8 w-8 p-0">
-                      <Settings class="h-4 w-4" />
-                    </Button>
-                  </a>
-                </TooltipTrigger>
-                <TooltipContent>
-                  <p>Edit Notification Settings</p>
-                </TooltipContent>
-              </Tooltip>
-            </TooltipProvider>
+          <div class="mt-3 flex items-start justify-between gap-3 px-3">
+            <div class="flex min-w-0 flex-1 flex-col gap-2">
+              <div
+                class="border-border/60 bg-muted/60 flex flex-wrap items-center gap-1 rounded-xl border p-1"
+                role="group"
+              >
+                <Button
+                  v-for="option in filterOptions"
+                  :key="option.label"
+                  variant="ghost"
+                  size="sm"
+                  class="h-8 rounded-lg border border-transparent px-3 text-xs font-medium transition-colors"
+                  :class="
+                    importance === option.value
+                      ? 'border-border bg-background text-foreground'
+                      : 'text-muted-foreground hover:border-border/60 hover:bg-muted/40 hover:text-foreground'
+                  "
+                  :aria-pressed="importance === option.value"
+                  @click="importance = option.value"
+                >
+                  {{ option.label }}
+                </Button>
+              </div>
+            </div>
+            <div class="shrink-0">
+              <TooltipProvider>
+                <Tooltip :delay-duration="0">
+                  <TooltipTrigger as-child>
+                    <a href="/Settings/Notifications">
+                      <Button variant="ghost" size="sm" class="h-8 w-8 p-0">
+                        <Settings class="h-4 w-4" />
+                      </Button>
+                    </a>
+                  </TooltipTrigger>
+                  <TooltipContent>
+                    <p>Edit Notification Settings</p>
+                  </TooltipContent>
+                </Tooltip>
+              </TooltipProvider>
+            </div>
           </div>
 
           <TabsContent value="unread" class="min-h-0 flex-1 flex-col">