feat: Add deployment guide and update README for Coolify setup; include dotenv for environment variable management

tests/commands/ping.test.ts

@@ -1,10 +1,13 @@
+import { ChatInputCommandInteraction } from "discord.js";
 import { pingCommand } from "../../src/commands/ping";
 
 describe("pingCommand", () => {
   it("replies with Pong", async () => {
     const reply = jest.fn().mockResolvedValue(undefined);
 
-    await pingCommand.execute({ reply } as any);
+    await pingCommand.execute({
+      reply,
+    } as unknown as ChatInputCommandInteraction);
 
     expect(reply).toHaveBeenCalledWith("Pong!");
   });

tests/commands/sign-up.test.ts

@@ -20,15 +20,16 @@ describe("signUpCommand", () => {
     (getTourSchedule as jest.Mock).mockReturnValue(queue);
   });
 
-  function createInteraction(action: string): any {
+  function createInteraction(action: string) {
     return {
       inGuild: () => true,
       guildId: "guild-1",
       user: { id: "user-1" },
       guild: { id: "guild-1" },
       memberPermissions: {
-        has: jest.fn((permission: bigint) =>
-          permission === PermissionFlagsBits.ManageChannels,
+        has: jest.fn(
+          (permission: bigint) =>
+            permission === PermissionFlagsBits.ManageChannels,
         ),
       },
       options: {