feat: add safe global Discord command registration

scripts/register-discord-commands.ts

@@ -0,0 +1,10 @@
+import { commands } from '../src/discord/commands';
+import { registerCommands } from '../src/discord/registration';
+
+if (process.argv.includes('--apply')) {
+  const registered = await registerCommands(process.env.DISCORD_CLIENT_ID ?? '', process.env.DISCORD_BOT_TOKEN ?? '', commands);
+  console.log(`Registered global commands for servers and bot DMs: ${registered.map(name => `/${name}`).join(', ')}`);
+} else {
+  console.log(JSON.stringify(commands, null, 2));
+  console.log('Preview only. Add --apply to register these commands with Discord.');
+}