test(boost-greeting): update greeting message to Indonesian

Update the boost greeting message and its corresponding test assertions
to use Indonesian instead of English.

src/discord/events/boostGreeting.test.ts

@@ -13,10 +13,10 @@ describe("sendBoostGreeting", () => {
     await sendBoostGreeting(channel, "user-123", "channel-456");
 
     expect(sent.length).toBe(1);
-    expect(sent[0]).toContain("Thank you for boosting");
+    expect(sent[0]).toContain("Makasih udah ngeboost");
     expect(sent[0]).toContain("<@user-123>");
     expect(sent[0]).toContain("/booster-role claim");
-    expect(sent[0]).toContain("<#channel-456>");
+    expect(sent[0]).toContain("di sini");
   });
 
   test("handles different user and channel IDs", async () => {
@@ -30,6 +30,6 @@ describe("sendBoostGreeting", () => {
     await sendBoostGreeting(channel, "other-user", "other-channel");
 
     expect(sent[0]).toContain("<@other-user>");
-    expect(sent[0]).toContain("<#other-channel>");
+    expect(sent[0]).toContain("di sini");
   });
 });

src/discord/events/boostGreeting.ts

@@ -10,8 +10,8 @@ export async function sendBoostGreeting(
   greetingChannelId: string,
 ): Promise<void> {
   const message =
-    `🎉 Thank you for boosting <@${userId}>! ` +
-    `You can now claim a custom role using \`/booster-role claim\` in <#${greetingChannelId}>.`;
+    `🎉 Makasih udah ngeboost <@${userId}>! ` +
+    `Sekarang kamu bisa claim custom role pake \`/booster-role claim\` di sini.`;
 
   await channel.send({ content: message });