Refactor app UX flow: move setup to main canvas, add mode/chart gating, fix date/value column selection, and add optional type casting

Moving app to gradio to avoid flickering issues

Cleaning up the app

Shrink avatar, rename header to Vibe-Coded by, add version line and About page

Shrink developer card buttons to match Bootstrap btn-sm sizing

Increase developer card sizing to match design mockup

Fix workflow permissions, expander flickering, and column KeyError

Fix UI wiggling loop and add daily keep-alive workflow

Initial deploy: Time Series Visualizer v0.1.0