📚 Add API usage documentation to GamemasterManager view

code/websites/pokedex.online/src/views/GamemasterManager.vue

@@ -157,6 +157,27 @@
           💡 The filtered pokemon.json is ideal for most use cases, while
           allFormsCostumes is comprehensive for complete data analysis.
         </p>
+
+        <h3 style="margin-top: 1.5rem; color: #667eea;">Using the API</h3>
+        <p>
+          Once data is saved to the server, other apps can access it via the
+          Gamemaster API:
+        </p>
+        <pre class="code-block"><code>import { GamemasterClient } from './gamemaster-client.js';
+
+const gm = new GamemasterClient('/api/gamemaster');
+
+// Get filtered pokemon
+const pokemon = await gm.getPokemon();
+
+// Get all forms with costumes
+const allForms = await gm.getAllForms();
+
+// Get moves
+const moves = await gm.getMoves();
+
+// Check what's available
+const status = await gm.getStatus();</code></pre>
       </div>
     </div>
   </div>