feat: ATM10-Statistikportal

Statistikportal für den All-the-Mods-10-Server (Minecraft 1.21.1, NeoForge 21.1):

- mod/: serverseitige NeoForge-Mod atmstats – Ereignisse, Live-Zähler, Servergesundheit,
  FTB-Dateien; Outbox auf der Festplatte, signierter gzip-Versand per HTTPS mit Backoff
- backend/: Fastify + PostgreSQL – idempotenter Ingest, Projektionen, Parser für SNBT,
  FTB Quests/Teams, world/stats, world/advancements und latest.log; Ranglisten, Snapshots,
  Retention, öffentliche API, SSE-Live-Updates, Admin mit argon2/CSRF, SFTP-Worker
- web/: Next.js-Dashboard – Übersicht, Ranglisten, Spielerprofile, ATM10, Server,
  Datenquellen, Verwaltung
- shared/: Protokoll v1 und API-Typen; tools/: Simulator, Log-Anonymisierer, RCON-Client
- deploy/: Docker Compose hinter Traefik, Backup; docs/: Architektur, Datenquellen, Betrieb

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

backend/config/mod-categories.json

@@ -0,0 +1,15 @@
+{
+  "tech": [
+    "mekanism", "mekanismgenerators", "powah", "modern_industrialization", "oritech", "create",
+    "immersiveengineering", "appliedenergistics2", "refinedstorage", "draconicevolution",
+    "integrateddynamics", "pneumaticcraft"
+  ],
+  "magic": [
+    "ars_nouveau", "ars_elemental", "ars_additions", "irons_spellbooks", "occultism", "theurgy",
+    "rootsclassic", "forbidden_arcanus", "evilcraft", "reliquary"
+  ],
+  "farming": [
+    "mysticalagriculture", "mysticalagradditions", "productivebees", "botanypots",
+    "pamhc2crops", "pamhc2trees", "pamhc2foodcore", "pamhc2foodextended", "farmersdelight", "herbsandharvest"
+  ]
+}