Move license notice to bottom of sidebar

Add dual license (AGPL-3.0 + Commercial) and copyright notices

Remove username gate — visitors see home page directly

Rename 分析侠 to Prefero across all source files

Remove login gates, make app fully open-source

Fix sidebar saved models: remove columns, add error handling

Add layout=wide to all pages, remove broken sticky CSS

Add per-user model saving, forum persistence, sidebar/header sticky, session timeout 30min

Replace dots menu with sidebar Developer Mode prompt

Fix developer entry menu: use vertical dots ⋮ instead of horizontal ⋯

Always hide Admin from sidebar, show ⋯ menu only for admin users

Add GMNL variants, IP tracking, BWS fix, session activity, UI polish

Add HTML report, cross-validation, admin analytics, auto-adaptive data, Slowbro pill fix

Fix session timeout: skip eviction check for freshly authenticated users

Add full Streamlit app, auth, queue, community, and deployment config