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/e2e/manga-list.spec.ts

@@ -0,0 +1,57 @@
+import { test, expect } from '@playwright/test';
+
+// These E2E tests run against the dev server (vite on :5173) which proxies
+// /api to the backend. Set E2E_BASE_URL to point at a different deployment.
+//
+// A live backend (and Postgres) must be reachable. Routes mock the network
+// where possible to keep journeys deterministic.
+
+test('home page renders the Mangalord heading and search input', async ({ page }) => {
+    // Mock the list endpoint so the test doesn't depend on DB state.
+    await page.route('**/api/mangas*', async (route) => {
+        await route.fulfill({
+            status: 200,
+            contentType: 'application/json',
+            body: JSON.stringify([])
+        });
+    });
+
+    await page.goto('/');
+    await expect(page.getByRole('link', { name: 'Mangalord' })).toBeVisible();
+    await expect(page.getByTestId('search-input')).toBeVisible();
+    await expect(page.getByTestId('empty')).toContainText('No mangas yet');
+});
+
+test('search updates the manga list', async ({ page }) => {
+    let lastSearch: string | null = null;
+    await page.route('**/api/mangas*', async (route) => {
+        const url = new URL(route.request().url());
+        lastSearch = url.searchParams.get('search');
+        const body =
+            lastSearch === 'berserk'
+                ? [
+                      {
+                          id: 'b1',
+                          title: 'Berserk',
+                          author: 'Kentaro Miura',
+                          description: null,
+                          cover_image_path: null,
+                          created_at: '2026-01-01T00:00:00Z',
+                          updated_at: '2026-01-01T00:00:00Z'
+                      }
+                  ]
+                : [];
+        await route.fulfill({
+            status: 200,
+            contentType: 'application/json',
+            body: JSON.stringify(body)
+        });
+    });
+
+    await page.goto('/');
+    await page.getByTestId('search-input').fill('berserk');
+    await page.getByRole('button', { name: 'Search' }).click();
+
+    await expect(page.getByTestId('manga-list')).toContainText('Berserk');
+    expect(lastSearch).toBe('berserk');
+});