feat: Session persistence + auto-redirect + bucket user database

fix: Page load + bucket config storage for .z-ai-config

feat: Bucket storage with local mount + cache + sync

Secure auth + HF bucket storage (batch 1)

feat: HF private dataset storage for users & projects, cloud save/load/delete

fix: add .z-ai-config for web search SDK, graceful search error handling

feat: multi-file project support, web search, templates, file tree, improved UI

Add web search support, redesign editor UI, fix sign-in popup

Add landing page, HF OAuth login, multi-provider support with lobehub logos

v3 upgrade: Multi-provider support + optimized UI + real logos