feat: 2026 UI overhaul, stability fixes, and NVIDIA NIM support

- Overhauled frontend with 2026 hacking HUD aesthetic (neon colors, glassmorphism)
- Added native support for NVIDIA NIM as a Tier 2 provider
- Fixed critical backend crashes in autonomous_agent.py and knowledge_processor.py
- Updated Kali sandbox build to Go 1.26 and fixed health check reliability
- Integrated Space Grotesk and JetBrains Mono fonts

docker-compose.yml

@@ -12,6 +12,7 @@ services:
       # These override .env if set
       - ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY:-}
       - OPENAI_API_KEY=${OPENAI_API_KEY:-}
+      - NIM_API_KEY=${NIM_API_KEY:-}
       - DATABASE_URL=sqlite+aiosqlite:///./data/neurosploit.db
     volumes:
       - neurosploit-data:/app/data