Implementation, thanks amp

app/src/lib/stores/profile.svelte.ts

@@ -0,0 +1,62 @@
+import { loadProfile, saveProfile } from '$lib/db.js';
+import { getUserId } from '$lib/crypto.js';
+import type { Tag, UserProfile } from '$lib/types.js';
+
+let profile = $state<UserProfile | null>(null);
+let loading = $state(true);
+
+export function getProfile() {
+	return {
+		get current() { return profile; },
+		get loading() { return loading; }
+	};
+}
+
+export async function initProfile(): Promise<UserProfile> {
+	loading = true;
+	const existing = await loadProfile();
+	if (existing) {
+		profile = existing;
+		loading = false;
+		return existing;
+	}
+
+	const userId = await getUserId();
+	const newProfile: UserProfile = {
+		id: userId,
+		name: '',
+		bio: '',
+		tags: [],
+		updatedAt: Date.now(),
+		signature: ''
+	};
+
+	await saveProfile(newProfile);
+	profile = newProfile;
+	loading = false;
+	return newProfile;
+}
+
+export async function updateProfile(updates: Partial<Pick<UserProfile, 'name' | 'bio' | 'tags'>>): Promise<void> {
+	if (!profile) return;
+
+	profile = {
+		...profile,
+		...updates,
+		updatedAt: Date.now()
+	};
+
+	await saveProfile(profile);
+}
+
+export async function addTag(tag: Tag): Promise<void> {
+	if (!profile) return;
+	const tags = [...profile.tags, tag];
+	await updateProfile({ tags });
+}
+
+export async function removeTag(index: number): Promise<void> {
+	if (!profile) return;
+	const tags = profile.tags.filter((_, i) => i !== index);
+	await updateProfile({ tags });
+}