feat(profiles): add profile repository

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/lib/server/profiles/repository.ts

@@ -0,0 +1,37 @@
+import type Database from 'better-sqlite3';
+import type { Profile } from '$lib/types';
+
+export function listProfiles(db: Database.Database): Profile[] {
+  return db
+    .prepare('SELECT id, name, avatar_emoji FROM profile ORDER BY name')
+    .all() as Profile[];
+}
+
+export function createProfile(
+  db: Database.Database,
+  name: string,
+  avatarEmoji: string | null = null
+): Profile {
+  const trimmed = name.trim();
+  if (!trimmed) throw new Error('Profile name cannot be empty');
+  return db
+    .prepare(
+      `INSERT INTO profile(name, avatar_emoji) VALUES (?, ?)
+       RETURNING id, name, avatar_emoji`
+    )
+    .get(trimmed, avatarEmoji) as Profile;
+}
+
+export function renameProfile(
+  db: Database.Database,
+  id: number,
+  newName: string
+): void {
+  const trimmed = newName.trim();
+  if (!trimmed) throw new Error('Profile name cannot be empty');
+  db.prepare('UPDATE profile SET name = ? WHERE id = ?').run(trimmed, id);
+}
+
+export function deleteProfile(db: Database.Database, id: number): void {
+  db.prepare('DELETE FROM profile WHERE id = ?').run(id);
+}

tests/integration/profile-repository.test.ts

@@ -0,0 +1,34 @@
+import { describe, it, expect } from 'vitest';
+import { openInMemoryForTest } from '../../src/lib/server/db';
+import {
+  createProfile,
+  listProfiles,
+  renameProfile,
+  deleteProfile
+} from '../../src/lib/server/profiles/repository';
+
+describe('profile repository', () => {
+  it('creates, lists, renames, deletes', () => {
+    const db = openInMemoryForTest();
+    const p = createProfile(db, 'Hendrik', '👨‍🍳');
+    expect(p.id).toBeGreaterThan(0);
+    expect(listProfiles(db).length).toBe(1);
+
+    renameProfile(db, p.id, 'Hendrik S.');
+    expect(listProfiles(db)[0].name).toBe('Hendrik S.');
+
+    deleteProfile(db, p.id);
+    expect(listProfiles(db).length).toBe(0);
+  });
+
+  it('rejects duplicate names', () => {
+    const db = openInMemoryForTest();
+    createProfile(db, 'Hendrik');
+    expect(() => createProfile(db, 'Hendrik')).toThrow();
+  });
+
+  it('rejects empty name', () => {
+    const db = openInMemoryForTest();
+    expect(() => createProfile(db, '   ')).toThrow(/empty/i);
+  });
+});