Feat: reasoning-Rolle entfernt — Modell geloescht, UI bereinigt

- Nemotron-3-Nano-Omni-30B-A3B-Reasoning von der Box entfernt (25 GB freigegeben)
- llama-swap config: Modell-Eintrag und reasoning-Alias entfernt
- sources.py: reasoning-Kategorie aus CATEGORIES entfernt
- maintenance.py: reasoning->heavy Mapping aus ROLE_MAP entfernt
- llamaswap.py: reasoning aus ROLE_IDS entfernt
- Frontend: reasoning aus allen ROLES-Arrays entfernt (ModelBadges, RolesCard, Cockpit)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/components/dashboard/RolesCard.tsx

@@ -2,7 +2,7 @@ import { Layers } from "lucide-react"
 import { useModels } from "@/lib/queries"
 import { cn } from "@/lib/utils"
 
-const ROLES = ["fast", "heavy", "coder", "reasoning", "vision", "scout"]
+const ROLES = ["fast", "heavy", "coder", "vision", "scout"]
 
 export function RolesCard() {
   const { data } = useModels(3_000)
@@ -40,7 +40,6 @@ export function RolesCard() {
                       role === "fast" ? "bg-cyan-500/15 text-cyan-400 border-cyan-500/25" :
                       role === "heavy" ? "bg-amber-500/15 text-amber-400 border-amber-500/25" :
                       role === "coder" ? "bg-violet-500/15 text-violet-400 border-violet-500/25" :
-                      role === "reasoning" ? "bg-emerald-500/15 text-emerald-400 border-emerald-500/25" :
                       role === "vision" ? "bg-pink-500/15 text-pink-400 border-pink-500/25" :
                       "bg-teal-500/15 text-teal-400 border-teal-500/25"
                     )}>