docs(website): lead with the agent-native story

`skills install` becomes the featured card on the home page, in the wide slot
the grid gives its first entry: one command hands a coding agent the JSON keys
of every record, the exit-code meanings, and the --json rule, with nothing to
clone because the skill ships inside the binary. The docs page gains a callout
and the command in the shell listing.

Also catches the site up with the scriptable command surface the last two
releases introduced: `get`, `shares add`, `serve`, `room list`, `message send`
and `--json` replace the flags and spellings that no longer exist.

website/index.html

@@ -8,7 +8,7 @@
     <title>soulseek-rs, a Soulseek client for your terminal</title>
     <meta
       name="description"
-      content="soulseek-rs is a keyboard-driven Soulseek client and a Rust protocol library. Search, share, browse, and chat from your terminal."
+      content="soulseek-rs is a keyboard-driven Soulseek client and a Rust protocol library, with scriptable subcommands. Search, share, browse, and chat from your terminal."
     />
     <meta name="theme-color" content="#14110F" media="(prefers-color-scheme: dark)" />
     <meta name="theme-color" content="#F2EDE4" media="(prefers-color-scheme: light)" />
@@ -17,7 +17,7 @@
     <meta property="og:title" content="soulseek-rs" />
     <meta
       property="og:description"
-      content="A Soulseek client and protocol library for Rust. Search, share, browse, and chat from your terminal."
+      content="A Soulseek client and protocol library for Rust. Search, share, browse, and chat from your terminal or a script."
     />
     <meta property="og:url" content="https://re-invention.nl/soulseek-rs/" />
     <link rel="canonical" href="https://re-invention.nl/soulseek-rs/" />