fix(ui): point to scvcoder-kpaa.hf.space + ENABLE_PERSISTENT_CONFIG=false

ui: DEFAULT_MODELS → gemma-4-e2b-unsloth-q4

ui: DEFAULT_MODELS → gemma-4-e2b-unsloth (matches new backend default)

ui: update DEFAULT_MODELS to new preset id format

Robust route detection: pushState/replaceState/popstate hooks + console.log

Inject route-change postMessage script into Open WebUI HTML

DEFAULT_MODELS: 개인정보 미니 상담 AI

Fix UID 1000 permissions (chown /app); require WEBUI_SECRET + OAUTH key as secrets

Convert to Open WebUI Docker SDK; delete prior Gradio app files