feat: complete P0 fixes + Manus UI overhaul phase 2

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

feat: DeepInfra Qwen3-Coder-480B-Turbo + provider UI + thinking mode + 30+ model aliases

fix: revert max_tokens to 16384 (output tokens, not context window)

feat: remove API settings tab, set default max tokens to 1M

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

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