fix(discord): add console logging and deferred responses

- Add builder.Logging.AddConsole() to DiscordBot Program.cs so logs
  are visible in docker logs.
- Add granular LogInformation/LogError calls to DiscordNewSessionCommand
  and DiscordRescheduleCommand to diagnose failures.
- Use InteractionCallback.DeferredMessage() + ModifyResponseAsync pattern
  for /newsession and /reschedule to avoid Discord 3-second interaction
  timeout.
- Bump version → 3.0.8

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -6,7 +6,7 @@ on:
       - main 
 
 env:
-  VERSION: 3.0.7
+  VERSION: 3.0.8
 
 jobs:
   # ЧАСТЬ 1: Собираем образы и кладем в Gitea (чтобы делиться с ребятами)