remove hardcoded default template, always use seeded templates

packages/web/src/components/PostForm.tsx

@@ -72,7 +72,7 @@ export default function PostForm({ boardSlug, boardId, onSubmit, onCancel }: Pro
     api.get<{ templates: Template[] }>(`/boards/${boardSlug}/templates`)
       .then((r) => {
         setTemplates(r.templates)
-        const def = r.templates.find((t) => t.isDefault)
+        const def = r.templates.find((t) => t.isDefault) || r.templates[0]
         if (def) setSelectedTemplateId(def.id)
       })
       .catch(() => {})
@@ -294,20 +294,6 @@ export default function PostForm({ boardSlug, boardId, onSubmit, onCancel }: Pro
         <div className="mb-4">
           {label('Template')}
           <div className="flex gap-2 flex-wrap">
-            <button
-              onClick={() => handleTemplateChange('')}
-              className="px-3 py-1.5 font-medium"
-              style={{
-                background: !selectedTemplateId ? 'var(--accent-subtle)' : 'transparent',
-                color: !selectedTemplateId ? 'var(--accent)' : 'var(--text-tertiary)',
-                border: `1px solid ${!selectedTemplateId ? 'var(--accent)' : 'var(--border)'}`,
-                borderRadius: 'var(--radius-md)',
-                fontSize: 'var(--text-xs)',
-                transition: 'all var(--duration-fast) ease-out',
-              }}
-            >
-              Default
-            </button>
             {templates.map((t) => (
               <button
                 key={t.id}