docs: update README, clean up old files

README.md

@@ -2,8 +2,6 @@
 
 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)
-
 ## Features
 
 - Quick event capture with keyboard shortcut (Ctrl+J)
@@ -25,33 +23,47 @@ Self-hosted AI-powered daily journaling application. Capture events throughout t
 
 ```bash
 # Clone the repository
-git clone https://github.com/lotherk/deardiary.git
+git clone git@git.kropa.tech:lotherk/deardiary.git
 cd deardiary
 
+# Configure environment (optional - defaults work out of box)
+cp .env.example .env
+
 # Start with Docker
 docker compose up -d
 ```
 
-Access the app at `http://localhost:5173`
+Access the app at `http://localhost:3000`
 
 Default credentials: `admin@localhost` / `changeme123`
 
-## Documentation
-
-Documentation is included in the `www/` directory. Run the website container:
-
-```bash
-docker compose up -d docs
-```
-
-Access at `http://localhost:4000`
-
 ## Configuration
 
-1. Go to Settings and select your AI provider (Groq, OpenAI, Anthropic, Ollama, LM Studio)
-2. Enter your API key for the selected provider
-3. Optionally customize the model and base URL
-4. Test the connection before saving
+### Environment Variables
+
+Copy `.env.example` to `.env` and configure:
+
+```bash
+# Backend
+BACKEND_JWT_SECRET=your-secret-key
+BACKEND_DEFAULT_USER_EMAIL=admin@example.com
+BACKEND_DEFAULT_USER_PASSWORD=your-password
+
+# Default AI for new users (optional)
+BACKEND_DEFAULT_AI_PROVIDER=groq
+BACKEND_DEFAULT_AI_MODEL=llama-3.3-70b-versatile
+BACKEND_DEFAULT_AI_API_KEY=your-api-key
+
+# Website links (for product website)
+WEBSITE_APP_URL=https://your-app.example.com
+GIT_URL=https://git.kropa.tech/lotherk/deardiary
+```
+
+### AI Providers
+
+Go to Settings and select your AI provider (Groq, OpenAI, Anthropic, Ollama, LM Studio, xAI, Custom).
+
+New users will use the system default AI settings by default. Users can uncheck "Use system default settings" to configure their own.
 
 ## Development
 
@@ -96,9 +108,10 @@ docker compose build && docker compose up -d
 │       ├── components/
 │       └── lib/     # API client, geolocation
 ├── www/              # Product website with docs
-├── Dockerfile        # App container
-├── Dockerfile.docs   # Website container
-└── docker-compose.yml
+├── Dockerfile        # App container (frontend + backend + nginx)
+├── Dockerfile.website # Website container with envsubst
+├── docker-compose.yml
+└── docker-entrypoint.d/ # Entrypoint scripts
 ```
 
 ## Routes