Fix Browse dropdown: allow_custom_value for dynamically-populated choices

Add Browse data panel (table dropdown + row preview)

Add schema visualizer (table cards + PK/FK badges + relationships); guard prefetch to Space only

Fix ZeroGPU duration (120s) + prefetch weights at startup; tighten copy; cap demo tokens

Switch demo to bird-cot CoT model, add sqlite upload + reasoning, honest numbers

Deploy bf16 LocalSQL Space for ZeroGPU