Update media handling

README.md

@@ -6,7 +6,7 @@ Luxtools is now implemented entirely in Go. The project serves a retro-styled HT
 
 ```
 luxtools/
-├── assets/               # Runtime asset directory served from disk (/assets/*)
+├── media/                # Runtime media directory served from disk (/media/*)
 ├── cmd/luxtools/         # Main program entrypoint
 ├── internal/server/      # HTTP server, handlers, helpers, and tests
 ├── web/
@@ -33,7 +33,23 @@ The server listens on [http://127.0.0.1:5000](http://127.0.0.1:5000) and serves:
 - `/counter` — HTMX-powered counter snippet with server-side state
 - `/time` — current server timestamp
 - `/static/*` — vendored assets from `web/static`
-- `/assets/*` — runtime assets from the shared `assets` directory
+- `/media/*` — runtime media files served from the configured directory
+
+### Configuration
+
+The server looks for media files in the following order:
+
+1. A directory specified via `--media-dir` on the command line.
+2. The `media_dir` value in an optional JSON config file passed with `--config`.
+3. A `media` directory located alongside the binary or in the current working directory.
+
+Sample config file:
+
+```json
+{
+	"media_dir": "/var/lib/luxtools/media"
+}
+```
 
 ## Testing