Update README with current status and features

Clarify that the project implements *parts* of the OpenSubsonic API. Add
a section detailing the current status and explicitly list implemented
features. Update installation steps to include installing the Diesel
CLI. Add an example for the `createUser.view` endpoint.

README.md

@@ -1,18 +1,22 @@
 # SoundSonic
 
-A Rust-based music streaming server implementing the OpenSubsonic API protocol.
+A Rust-based server implementing parts of the OpenSubsonic API protocol.
 
 ## Overview
 
-SoundSonic is a lightweight music streaming server built with Rust that implements the [OpenSubsonic](https://opensubsonic.netlify.app/) API specification. It allows you to stream your music collection to any OpenSubsonic-compatible client.
+SoundSonic is a lightweight server built with Rust that implements the [OpenSubsonic](https://opensubsonic.netlify.app/) API specification. The long-term goal is to support streaming a local music collection to OpenSubsonic-compatible clients.
+
+## Status
+
+This project is under active development. Only a small subset of the OpenSubsonic API is implemented today (see **API Endpoints**).
 
 ## Features
 
-- **OpenSubsonic API Support**: Compatible with any client supporting the OpenSubsonic protocol
+- **OpenSubsonic Response Envelope**: Consistent `subsonic-response` JSON format
-- **User Management**: Role-based access control with customizable user permissions
+- **OpenSubsonic Extensions Endpoint**: Exposes supported extensions via `getOpenSubsonicExtensions`
-- **SQLite Database**: Lightweight local storage with Diesel ORM
+- **User Creation**: `createUser.view` endpoint with role/permission fields
-- **RESTful API**: Clean, well-structured API endpoints
+- **SQLite + Diesel**: Lightweight local storage
-- **Async Runtime**: Built on Tokio for high performance
+- **Axum + Tokio**: Async HTTP server runtime
 
 ## Technologies
 
@@ -25,18 +29,23 @@ SoundSonic is a lightweight music streaming server built with Rust that implemen
 ## Prerequisites
 
 - Rust (latest stable version)
-- SQLite
+- SQLite (system library)
 - Diesel CLI (for database migrations)
 
 ## Installation
 
 1. Clone the repository:
 ```bash
-git clone <repository-url>
+git clone <your-repository-url>
 cd soundsonic
 ```
 
-2. Set up the database URL:
+2. Install Diesel CLI (SQLite):
+```bash
+cargo install diesel_cli --no-default-features --features sqlite
+```
+
+3. Set up the database URL:
 ```bash
 export DATABASE_URL=database.db
 ```
@@ -46,27 +55,37 @@ Or create a `.env` file:
 DATABASE_URL=database.db
 ```
 
-3. Run database migrations:
+4. Run database migrations:
 ```bash
 diesel migration run
 ```
 
-4. Build and run the server:
+5. Build and run the server:
 ```bash
 cargo run
 ```
 
-The server will start on `http://0.0.0.0:3311`
+The server will start on `http://0.0.0.0:3311`.
 
 ## API Endpoints
 
+All endpoints are nested under the `/rest` prefix.
+
 ### System
 
-- `GET/POST /rest/getOpenSubsonicExtensions` - Get supported OpenSubsonic extensions
+- `GET /rest/getOpenSubsonicExtensions`
+- `POST /rest/getOpenSubsonicExtensions`
 
 ### User Management
 
-- `GET/POST /rest/createUser.view` - Create a new user with specified permissions
+- `GET /rest/createUser.view`
+- `POST /rest/createUser.view` (accepts `application/x-www-form-urlencoded`)
+
+Example:
+```bash
+curl -X POST 'http://localhost:3311/rest/createUser.view' \
+  -d 'username=alice&password=secret&email=alice@example.com&adminRole=true&streamRole=true'
+```
 
 ### Request/Response Format
 
@@ -137,7 +156,7 @@ diesel migration run
 
 ## License
 
-[Your License Here]
+MIT (see `LICENSE`).
 
 ## Contributing