feat: Extract UI components from trakli/webui with Nuxt playground explorer

.playground/app/components/DashboardMain.vue

@@ -0,0 +1,142 @@
+<script setup>
+import { computed, ref, h, onErrorCaptured, markRaw } from 'vue';
+import { components, getDemo, slottedComponents } from '../registry';
+import UsageLanding from './UsageLanding.vue';
+
+const props = defineProps({
+  selected: { type: String, default: '' }
+});
+
+defineEmits(['select-category']);
+
+const meta = computed(() => components.find((c) => c.name === props.selected) || null);
+const isSlotted = computed(() => meta.value && slottedComponents.has(meta.value.name));
+const demo = computed(() => (meta.value ? getDemo(meta.value.name) : { props: {} }));
+
+// Per-render error boundary: a single component that throws during render
+// must not take down the whole dashboard (which forced a manual refresh).
+const renderError = ref(null);
+
+onErrorCaptured((err) => {
+  renderError.value = err && err.message ? err.message : String(err);
+  return false;
+});
+
+// Reset any prior error whenever the selection changes.
+const selectedKey = computed(() => props.selected);
+import { watch } from 'vue';
+watch(selectedKey, () => { renderError.value = null; });
+</script>
+
+<template>
+  <div v-if="!meta" class="usage-wrap">
+    <UsageLanding @select-category="$emit('select-category', $event)" />
+  </div>
+
+  <div v-else-if="renderError" class="error-hint">
+    <h3>This component could not be previewed</h3>
+    <p>{{ meta.name }} threw during render:</p>
+    <pre>{{ renderError }}</pre>
+    <p class="error-hint__note">
+      It likely needs a data shape (e.g. a <code>budget</code>/<code>party</code>/<code>wallet</code>
+      object) not yet provided in the playground registry.
+    </p>
+  </div>
+
+  <!-- Slotted / composite demos need real template fragments -->
+  <div v-else-if="isSlotted" class="demo">
+    <div v-if="meta.name === 'TButton'" class="btn-row">
+      <TButton text="Primary" variant="primary" :full-width="false" />
+      <TButton text="Secondary" variant="secondary" :full-width="false" />
+      <TButton text="Outline" variant="outline" :full-width="false" />
+      <TButton text="Loading" loading :full-width="false" />
+      <TButton text="Disabled" disabled :full-width="false" />
+    </div>
+
+    <TCard v-else-if="meta.name === 'TCard'" title="Card title">Card body content</TCard>
+
+    <TInfoButton v-else-if="meta.name === 'TInfoButton'" text="Info" :full-width="false" />
+
+    <TContainer v-else-if="meta.name === 'TContainer'">
+      <TStack>
+        <TCard title="Stacked">One</TCard>
+        <TCard title="Stacked">Two</TCard>
+      </TStack>
+    </TContainer>
+
+    <TStack v-else-if="meta.name === 'TStack'">
+      <TCard title="Stacked">One</TCard>
+      <TCard title="Stacked">Two</TCard>
+    </TStack>
+
+    <TGrid v-else-if="meta.name === 'TGrid'">
+      <TCard title="Grid">A</TCard>
+      <TCard title="Grid">B</TCard>
+    </TGrid>
+
+    <TSplit v-else-if="meta.name === 'TSplit'">
+      <template #master><TCard title="Master">M</TCard></template>
+      <template #detail><TCard title="Detail">D</TCard></template>
+    </TSplit>
+
+    <TPanel v-else-if="meta.name === 'TPanel'" title="Panel">Panel content</TPanel>
+
+    <TPageShell v-else-if="meta.name === 'TPageShell'" title="Page shell">
+      <TCard title="Inside">Shell body</TCard>
+    </TPageShell>
+
+    <TDropdown v-else-if="meta.name === 'TDropdown'" text="Menu" :full-width="false">
+      <TDropdownItem text="Action one" />
+      <TDropdownItem text="Action two" />
+    </TDropdown>
+
+    <TTabs v-else-if="meta.name === 'TTabs'" v-bind="demo.props">
+      <template #first><TCard title="First">First panel</TCard></template>
+      <template #second><TCard title="Second">Second panel</TCard></template>
+    </TTabs>
+
+    <CollapsibleSection v-else-if="meta.name === 'CollapsibleSection'" title="Section">
+      Collapsible content
+    </CollapsibleSection>
+  </div>
+
+  <!-- Generic: render with demo props -->
+  <div v-else class="demo">
+    <component :is="meta.component" v-bind="demo.props" />
+  </div>
+</template>
+
+<style scoped>
+.demo {
+  padding: 2rem;
+}
+.btn-row {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.75rem;
+  align-items: center;
+}
+.usage-wrap {
+  padding: 1rem 0;
+}
+.error-hint {
+  padding: 2rem;
+  color: var(--color-error-dark);
+}
+.error-hint h3 {
+  margin-top: 0;
+}
+.error-hint pre {
+  background: rgba(var(--color-error-rgb), 0.08);
+  border: 1px solid rgba(var(--color-error-rgb), 0.2);
+  border-radius: 0.5rem;
+  padding: 0.75rem 1rem;
+  overflow-x: auto;
+  font-size: 0.8rem;
+  white-space: pre-wrap;
+}
+.error-hint__note {
+  color: var(--color-text-muted);
+  font-size: 0.85rem;
+}
+</style>