fix: logic error in response parsing and add debug logs

feat: add OpenBMB Core Router (MiniCPM4.1-8B) and wire it to Gradio UI

fix: update chatbot output to use strict Gradio 6 dictionary format

fix: move vision tool import to top level for ZeroGPU startup scan

feat: Fix Gradio warnings and implement ZeroGPU startup hook for vision pipeline

Custom UI