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

data/custom-knowledge/index.json

@@ -13,7 +13,10 @@
       "knowledge_entries": []
     }
   ],
-  "vuln_type_index": {},
+  "vuln_type_index": {
+    "information_disclosure": [],
+    "clickjacking": []
+  },
   "version": "1.0",
-  "updated_at": "2026-02-16T14:50:31.618046"
+  "updated_at": "2026-04-28T19:00:40.997968"
 }