Audit remediation: XSS fix, pinned loaders, engine bug fixes, honest claims, head_dim KV, hackathon tags

Honest non-LLM lookups, realistic speeds, clearer gauge, custom/URL coupling, runner icon

Full model-URL breakdowns, gauge clarity, CPU honesty, multi-platform buying guide, chart tooltips, runner icon

Interactive results, working priority, fine-tuning mode, honest custom + model lookup