feat(web): add profile management

Co-authored-by: multica-agent <github@multica.ai>

apps/web/server/utils/profile.ts

@@ -0,0 +1,26 @@
+export interface ProfileRecord {
+  id: string
+  display_name: string
+  description: string
+  avatar_path: string | null
+  created_at: string
+  updated_at: string
+}
+
+export function profileAvatarUrl(profile: Pick<ProfileRecord, 'avatar_path' | 'updated_at'>, supabaseUrl: string): string | null {
+  if (!profile.avatar_path) return null
+  const encodedPath = profile.avatar_path.split('/').map(encodeURIComponent).join('/')
+  const version = encodeURIComponent(profile.updated_at)
+  return `${supabaseUrl.replace(/\/$/, '')}/storage/v1/object/public/profile-avatars/${encodedPath}?v=${version}`
+}
+
+export function visibleProfile(profile: ProfileRecord, supabaseUrl: string) {
+  return {
+    id: profile.id,
+    display_name: profile.display_name,
+    description: profile.description,
+    avatar_url: profileAvatarUrl(profile, supabaseUrl),
+    created_at: profile.created_at,
+    updated_at: profile.updated_at,
+  }
+}