Clean up leftover sv-create scaffold, add real README and homepage

Removes the default vitest/Playwright demo files and the /demo hub page
that only linked to the removed Playwright demo. Replaces the generic
sv-create README and "Welcome to SvelteKit" placeholder homepage with
content describing this project and linking to the real demos.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

README.md

@@ -1,42 +1,34 @@
-# sv
+# webavatar-core
 
-Everything you need to build a Svelte project, powered by [`sv`](https://github.com/sveltejs/cli).
+A base SvelteKit project meant to be branched off for future webavatar client projects. It provides the reusable core infrastructure those projects would otherwise reimplement from scratch — session management, auth tokens, and the realtime model connection — as a foundation to branch from, not a finished product.
 
-## Creating a project
+See [docs/ARCHITECTURE.md](docs/ARCHITECTURE.md) for the full architecture map, and [AGENTS.md](AGENTS.md) for project conventions and structure. `docs/` holds a deep-dive per subsystem.
 
-If you're seeing this, you've probably already done this step. Congrats!
-
-```sh
-# create a new project
-npx sv create my-app
-```
-
-To recreate this project with the same configuration:
-
-```sh
-# recreate this project
-npx sv@0.17.0 create --template minimal --types ts --add prettier eslint vitest="usages:component,unit" playwright --install npm webavatar-base
-```
-
-## Developing
-
-Once you've created a project and installed dependencies with `npm install` (or `pnpm install` or `yarn`), start a development server:
+## Getting started
 
 ```sh
+npm install
+cp .env.example .env
+# fill in OPENAI_API_KEY and REALTIME_TOKEN_SECRET in .env
 npm run dev
-
-# or start the server and open the app in a new browser tab
-npm run dev -- --open
 ```
 
-## Building
+Open [`/demo/realtime`](http://localhost:5173/demo/realtime) for the realtime session reference wiring, or [`/demo/humanoid`](http://localhost:5173/demo/humanoid) for the humanoid avatar-state demo (works offline via `REALTIME_PROVIDER=mock`, no API key needed).
 
-To create a production version of your app:
+## Scripts
 
-```sh
-npm run build
-```
+- `npm run dev` / `npm run build` / `npm run preview` — standard SvelteKit commands.
+- `npm run check` — type-check. `npm run lint` / `npm run format` — prettier + eslint.
+- `npm run test:unit` — vitest. `npm run test:e2e` — Playwright.
+- `npm start` — run the production build via `server.js` (the persistent Node process the realtime WebSocket relay requires — see [docs/ARCHITECTURE.md](docs/ARCHITECTURE.md)).
 
-You can preview the production build with `npm run preview`.
+## Documentation
 
-> To deploy your app, you may need to install an [adapter](https://svelte.dev/docs/kit/adapters) for your target environment.
+| Subsystem                                                    | Doc                                                |
+| ------------------------------------------------------------- | --------------------------------------------------- |
+| Architecture overview and module layering                     | [docs/ARCHITECTURE.md](docs/ARCHITECTURE.md)         |
+| Realtime session management                                   | [docs/REALTIME_SESSION.md](docs/REALTIME_SESSION.md) |
+| Tool calling (server- and client-executed)                    | [docs/TOOLS.md](docs/TOOLS.md)                       |
+| Analytics recording                                            | [docs/ANALYTICS.md](docs/ANALYTICS.md)               |
+| Configuration (env vars, persona)                              | [docs/CONFIGURATION.md](docs/CONFIGURATION.md)       |
+| `humanoid` package (avatar-state, animation composition)       | [docs/HUMANOID.md](docs/HUMANOID.md)                 |

src/lib/vitest-examples/Welcome.svelte

@@ -1,8 +0,0 @@
-<script>
-	import { greet } from './greet';
-
-	let { host = 'SvelteKit', guest = 'Vitest' } = $props();
-</script>
-
-<h1>{greet(host)}</h1>
-<p>{greet(guest)}</p>

src/lib/vitest-examples/Welcome.svelte.spec.ts

@@ -1,15 +0,0 @@
-import { page } from 'vitest/browser';
-import { describe, expect, it } from 'vitest';
-import { render } from 'vitest-browser-svelte';
-import Welcome from './Welcome.svelte';
-
-describe('Welcome.svelte', () => {
-	it('renders greetings for host and guest', async () => {
-		render(Welcome, { host: 'SvelteKit', guest: 'Vitest' });
-
-		await expect
-			.element(page.getByRole('heading', { level: 1 }))
-			.toHaveTextContent('Hello, SvelteKit!');
-		await expect.element(page.getByText('Hello, Vitest!')).toBeInTheDocument();
-	});
-});

src/lib/vitest-examples/greet.spec.ts

@@ -1,8 +0,0 @@
-import { describe, it, expect } from 'vitest';
-import { greet } from './greet';
-
-describe('greet', () => {
-	it('returns a greeting', () => {
-		expect(greet('Svelte')).toBe('Hello, Svelte!');
-	});
-});

src/lib/vitest-examples/greet.ts

@@ -1,3 +0,0 @@
-export function greet(name: string): string {
-	return 'Hello, ' + name + '!';
-}

src/routes/+page.svelte

@@ -1,2 +1,22 @@
-<h1>Welcome to SvelteKit</h1>
-<p>Visit <a href="https://svelte.dev/docs/kit">svelte.dev/docs/kit</a> to read the documentation</p>
+<script lang="ts">
+	import { resolve } from '$app/paths';
+</script>
+
+<h1>webavatar-core</h1>
+<p>
+	A base SvelteKit project for webavatar client projects. It provides the reusable
+	infrastructure those projects would otherwise reimplement from scratch — session management,
+	auth tokens, and the realtime model connection — as a foundation to branch from, not a finished
+	product.
+</p>
+
+<h2>Demos</h2>
+<ul>
+	<li><a href={resolve('/demo/realtime')}>/demo/realtime</a> — realtime session reference wiring</li>
+	<li>
+		<a href={resolve('/demo/humanoid')}>/demo/humanoid</a> — humanoid avatar-state derivation
+	</li>
+</ul>
+
+<h2>Docs</h2>
+<p>See <code>docs/ARCHITECTURE.md</code> in the repo for the full architecture map, or the README for getting started.</p>

src/routes/demo/+page.svelte

@@ -1,5 +0,0 @@
-<script lang="ts">
-	import { resolve } from '$app/paths';
-</script>
-
-<a href={resolve('/demo/playwright')}>playwright</a>

src/routes/demo/playwright/+page.svelte

@@ -1 +0,0 @@
-<h1>Playwright e2e test demo</h1>

src/routes/demo/playwright/page.svelte.e2e.ts

@@ -1,6 +0,0 @@
-import { expect, test } from '@playwright/test';
-
-test('has expected h1', async ({ page }) => {
-	await page.goto('/demo/playwright');
-	await expect(page.locator('h1')).toBeVisible();
-});