Snippets used by bundled venvs unified build

These files are used when building the bundled ingestion venvs (full and slim). The Dockerfile copies them into the image and invokes the build script.

File	Purpose
build_bundled_venvs_unified.py	Creates per-plugin venvs (e.g. s3-bundled, file-bundled) and installs acryl-datahub + acryl-datahub-cloud with constraints and overrides.
build_bundled_venvs_unified.sh	Wrapper that sets env (e.g. BUNDLED_CLI_VERSION, BUNDLED_VENV_PLUGINS) and runs the Python script.
constraints.txt	Single source of truth for CVE minimums and shared pins. Used by the bundled venv build and by Dockerfile pip install steps that install from requirements.

The Dockerfile copies constraints.txt to $DATAHUB_BUNDLED_VENV_PATH for the bundled venvs; it may also be copied to the app directory for main-venv installs.