Fix GPU support, branding, UI bugs, and Gemma 4 artifact stripping

Fix scatter and treemap chart sizing — add explicit height/width to prevent collapse in chat bubble

ARIA rebrand, OFAC screening, multi-format tool call parser, AML rename

Reformat cluster stats as markdown bullets with bold numbers

Fix: write threshold CSV to /tmp to avoid permission error

Initial deploy: AML demo app with Ollama + Qwen v13