update dependencies in requirements.txt and uv.lock for caainp-cvm and torch, modify .vercelignore to exclude uv-related files, and refactor server.py by removing unused uuid import

update .vercelignore to clarify excluded files and modify vercel.json to add build environment variable for UV_NO_VERIFY_HASHES

remove prepare-requirements.sh script and update vercel.json to include rewrites for API routing

refactor navigation API integration by removing nav_bridge.py and updating dependencies in pyproject.toml and README.md to align with new session management