chore: initial project scaffold

Set up Mangalord with a Rust/axum backend, SvelteKit frontend, Postgres,
and Docker Compose deployment. Establishes the architecture and TDD
patterns the project will extend:

- Hexagonal-ish backend layering (domain / repo / storage / api) with
  a pluggable Storage trait (LocalStorage today, S3 as a future impl).
- Initial migration: users, mangas, chapters, bookmarks.
- Vertical slice for mangas (list, search, create, get) with
  #[sqlx::test] integration coverage and storage unit tests.
- SvelteKit frontend using Svelte 5 runes, typed API client, Vitest
  unit tests and Playwright e2e with route mocking.
- CLAUDE.md documenting layering, TDD/git/SemVer workflow rules, and
  extension points (tags, fulltext search, OCR, S3, auth).
- Project-scoped .claude/settings.json with permission allowlist for
  the toolchain (git, cargo, npm/vite, docker, psql, gh, doc fetches).

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

frontend/src/lib/api/mangas.ts

@@ -0,0 +1,36 @@
+import { request, type Manga } from './client';
+
+export type ListOptions = {
+    search?: string;
+    limit?: number;
+    offset?: number;
+};
+
+export async function listMangas(opts: ListOptions = {}): Promise<Manga[]> {
+    const params = new URLSearchParams();
+    if (opts.search) params.set('search', opts.search);
+    if (opts.limit != null) params.set('limit', String(opts.limit));
+    if (opts.offset != null) params.set('offset', String(opts.offset));
+    const qs = params.toString();
+    return request<Manga[]>(`/mangas${qs ? `?${qs}` : ''}`);
+}
+
+export async function getManga(id: string): Promise<Manga> {
+    return request<Manga>(`/mangas/${encodeURIComponent(id)}`);
+}
+
+export type NewManga = {
+    title: string;
+    author?: string | null;
+    description?: string | null;
+};
+
+export async function createManga(input: NewManga): Promise<Manga> {
+    return request<Manga>('/mangas', {
+        method: 'POST',
+        headers: { 'content-type': 'application/json' },
+        body: JSON.stringify(input)
+    });
+}
+
+export type { Manga };