docs: fix Python package names on landing page

- `pip install donglora-python` → `pip install donglora`
- client-py description: `donglora` on PyPI
- mux-py description: `donglora-mux` on PyPI

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/pages/index.astro

@@ -169,7 +169,7 @@ your code ──► client library ──┘</pre>
           <p class="font-medium text-text">Install a client library</p>
           <pre
             class="font-mono text-sm text-accent bg-bg-card border border-border px-4 py-2 rounded mt-2"
-          >pip install donglora-python</pre>
+          >pip install donglora</pre>
         </div>
       </li>
       <li class="flex gap-4">
@@ -228,7 +228,7 @@ radio.send(b"hello lora")</pre>
         rel="noopener noreferrer"
       >
         <span class="font-mono text-accent text-sm">client-py</span>
-        <p class="text-sm text-text-muted mt-1">Python client library &mdash; <code class="font-mono text-xs text-accent">donglora-python</code> on PyPI</p>
+        <p class="text-sm text-text-muted mt-1">Python client library &mdash; <code class="font-mono text-xs text-accent">donglora</code> on PyPI</p>
       </a>
     </div>
 
@@ -252,7 +252,7 @@ radio.send(b"hello lora")</pre>
         rel="noopener noreferrer"
       >
         <span class="font-mono text-accent text-sm">mux-py</span>
-        <p class="text-sm text-text-muted mt-1">USB multiplexer daemon (Python)</p>
+        <p class="text-sm text-text-muted mt-1">USB multiplexer daemon &mdash; <code class="font-mono text-xs text-accent">donglora-mux</code> on PyPI</p>
       </a>
     </div>