feat: complete P0 fixes + Manus UI overhaul phase 2

feat: Qwen3 uncensored prompt + Manus-style UI + P0 bug fixes

fix: Move useBuddy after useChat to fix TDZ ReferenceError

feat: Full Buddy companion pet system (6 modules matching original)

fix: mobile responsive, max tokens 128k, HuggingFace models, Quick Select UI

fix: chat auth bypass for dev mode, race conditions, model defaults

Claw Web v1.0 — AI Agent Web Interface with MiMo-V2-Flash