feat(error-tracking): complete GlitchTip integration for all backends

- Add import './instrument' to 15 remaining backend main.ts files
- Add GLITCHTIP_DSN to 10 additional backends in docker-compose.macmini.yml
- Total: 13/13 deployed backends have DSNs configured
- Total: 18/18 backends have instrument.ts + import

Backends with live error tracking after next rebuild:
chat, todo, calendar, clock, contacts, storage, presi, nutriphi,
skilltree, photos, zitare, mukke, planta

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/skilltree/apps/backend/src/main.ts

@@ -1,3 +1,4 @@
+import './instrument';
 import { NestFactory } from '@nestjs/core';
 import { ValidationPipe, Logger } from '@nestjs/common';
 import { AppModule } from './app.module';