refactor: align commands and interaction handler with project style

- Replace forwardToOwner embed approach with getComponentsForNaomi + Components V2
- Extract InteractionCreate handler to src/events/handleInteractionCreate.ts
- Replace deployGlobal.ts script with static commands.json payload
- Fix minor error handling in createTask and onboardMentee

src/commands/onboardMentee.ts

@@ -92,7 +92,9 @@ export const onboardMentee = async(
       content: `✅ Successfully onboarded **${menteeName}**!\nRepository: ${repoUrl}`,
     });
   } catch (error) {
-    await logger.log("error", `Failed to onboard mentee: ${String(error)}`);
+    await logger.error("onboardmentee command", error instanceof Error
+      ? error
+      : new Error(String(error)));
     await interaction.editReply({
       content: `❌ Failed to onboard mentee: ${String(error)}`,
     });