feat: replace Starlight docs with simple HTML product website

- Removed docs/ (Starlight)
- Added www/ with pure HTML/CSS/JS landing page
- Product website with features, how it works, get started
- Basic HTML documentation pages (installation, quick start, AI providers)
- Dockerfile.docs now serves static files from www/
- Updated README and AGENTS.md

README.md

@@ -3,7 +3,6 @@
 Self-hosted AI-powered daily journaling application. Capture events throughout the day and let AI generate thoughtful diary pages from your entries.
 
 [![Deploy to Docker](https://img.shields.io/badge/Deploy-Docker-blue)](https://github.com/lotherk/deardiary)
-[![Documentation](https://img.shields.io/badge/Documentation-Live-brightgreen)](https://lotherk.github.io/deardiary)
 
 ## Features
 
@@ -33,21 +32,19 @@ cd deardiary
 docker compose up -d
 ```
 
-Access the app at `http://localhost:8080`
+Access the app at `http://localhost:5173`
 
 Default credentials: `admin@localhost` / `changeme123`
 
 ## Documentation
 
-Full documentation is available at [https://lotherk.github.io/deardiary](https://lotherk.github.io/deardiary)
+Documentation is included in the `www/` directory. Run the website container:
 
-Topics covered:
-- [Installation](https://lotherk.github.io/deardiary/getting-started/installation/)
-- [Quick Start](https://lotherk.github.io/deardiary/getting-started/quick-start/)
-- [Configuration](https://lotherk.github.io/deardiary/getting-started/configuration/)
-- [Features](https://lotherk.github.io/deardiary/features/events/)
-- [API Reference](https://lotherk.github.io/deardiary/api/authentication/)
-- [Deployment](https://lotherk.github.io/deardiary/deployment/docker/)
+```bash
+docker compose up -d docs
+```
+
+Access at `http://localhost:4000`
 
 ## Configuration
 
@@ -81,14 +78,6 @@ npm install
 npm run dev
 ```
 
-### Build Docs Locally
-
-```bash
-cd docs
-npm install
-npm run dev
-```
-
 ### Docker Build
 
 ```bash
@@ -106,7 +95,9 @@ docker compose build && docker compose up -d
 │       ├── pages/   # Page components
 │       ├── components/
 │       └── lib/     # API client, geolocation
-├── docs/            # Starlight documentation site
+├── www/              # Product website with docs
+├── Dockerfile        # App container
+├── Dockerfile.docs   # Website container
 └── docker-compose.yml
 ```