refactor: update help options and improve config file handling

README.md

@@ -170,25 +170,19 @@ Imports GPG keys for verifying Debian and Ubuntu repository signatures. Requires
 - Requires `~/.gnupg/` to exist
 - Keyserver can be customized via `GPG_KEYSERVER` in config
 
-### Options
+### Help
 
-#### `-c <path>` — Specify config file
+#### `help`, `-h`, `--help` — Show usage
 
 ```bash
-./aptly-mirror.sh -c /etc/aptly-mirror.conf update
+./aptly-mirror.sh help
 ```
 
-Config file search order (if `-c` not specified):
+Config file search order:
 1. `$APTLY_MIRROR_CONF` environment variable
 2. `./aptly-mirror.conf` (same directory as script)
 3. `/etc/aptly-mirror.conf`
 
-#### `-h`, `--help` — Show usage
-
-```bash
-./aptly-mirror.sh --help
-```
-
 ### Configuration
 
 All settings are in `aptly-mirror.conf`. See the included example for detailed comments.