feat: add product concept subtitle to radars

A Radar gains an optional Concept — a short subtitle naming the product
and its typical performances, rendered under the title and wrapping to a
balanced second line when long. Old radars default to an empty Concept
on load.

src/views/RadarList.vue

@@ -1,22 +1,20 @@
 <script setup lang="ts">
-import { computed } from 'vue'
-import { useRouter } from 'vue-router'
-import { useRadars } from '../storage'
+import { computed } from "vue"
+import { useRouter } from "vue-router"
+import { useRadars } from "../storage"
 
 const router = useRouter()
 const { radars, createBlank, remove } = useRadars()
 
-const sorted = computed(() =>
-  [...radars.value].sort((a, b) => b.updatedAt - a.updatedAt),
-)
+const sorted = computed(() => [...radars.value].sort((a, b) => b.updatedAt - a.updatedAt))
 
 function createAndOpen(): void {
   const radar = createBlank()
-  router.push({ name: 'editor', params: { id: radar.id } })
+  router.push({ name: "editor", params: { id: radar.id } })
 }
 
 function open(id: string): void {
-  router.push({ name: 'editor', params: { id } })
+  router.push({ name: "editor", params: { id } })
 }
 
 function confirmDelete(id: string, name: string): void {
@@ -25,9 +23,9 @@ function confirmDelete(id: string, name: string): void {
 
 function formatDate(ts: number): string {
   return new Date(ts).toLocaleDateString(undefined, {
-    year: 'numeric',
-    month: 'short',
-    day: 'numeric',
+    year: "numeric",
+    month: "short",
+    day: "numeric",
   })
 }
 </script>
@@ -44,15 +42,10 @@ function formatDate(ts: number): string {
       <button class="btn btn-primary" @click="createAndOpen">+ New radar</button>
     </div>
 
-    <div
-      v-if="sorted.length === 0"
-      class="card bg-base-100 border border-base-300 border-dashed"
-    >
+    <div v-if="sorted.length === 0" class="card bg-base-100 border border-base-300 border-dashed">
       <div class="card-body items-center text-center py-16">
         <p class="text-base-content/70">No radars yet.</p>
-        <button class="btn btn-primary mt-3" @click="createAndOpen">
-          Create your first radar
-        </button>
+        <button class="btn btn-primary mt-3" @click="createAndOpen">Create your first radar</button>
       </div>
     </div>
 
@@ -64,15 +57,13 @@ function formatDate(ts: number): string {
         @click="open(r.id)"
       >
         <div class="card-body">
-          <h2 class="card-title text-lg truncate">{{ r.name || 'Untitled radar' }}</h2>
+          <h2 class="card-title text-lg truncate">{{ r.name || "Untitled radar" }}</h2>
           <p class="text-sm text-base-content/60">
             {{ r.criteria.length }} criteria · {{ r.profiles.length }} profile{{
-              r.profiles.length === 1 ? '' : 's'
+              r.profiles.length === 1 ? "" : "s"
             }}
           </p>
-          <p class="text-xs text-base-content/40 mt-1">
-            Updated {{ formatDate(r.updatedAt) }}
-          </p>
+          <p class="text-xs text-base-content/40 mt-1">Updated {{ formatDate(r.updatedAt) }}</p>
           <div class="card-actions justify-end mt-2">
             <button
               class="btn btn-ghost btn-xs text-error"