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/Dockerfile.kali

@@ -18,7 +18,7 @@
 #   - Full Kali apt repos available for on-demand apt-get install of any security tool
 
 # ---- Stage 1: Pre-compile Go security tools ----
-FROM golang:1.24-bookworm AS go-builder
+FROM golang:1.26-bookworm AS go-builder
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     git build-essential libpcap-dev \

docker/Dockerfile.sandbox

@@ -2,7 +2,7 @@
 # Kali-based container with real penetration testing tools
 # Provides Nuclei, Naabu, and other ProjectDiscovery tools via isolated execution
 
-FROM golang:1.24-bookworm AS go-builder
+FROM golang:1.26-bookworm AS go-builder
 
 RUN apt-get update && apt-get install -y --no-install-recommends git build-essential && \
     rm -rf /var/lib/apt/lists/*