Fix jaffle install and Docker paths

[KKranthi6881]

Summary

• Pin Docker and local setup to datalex-cli 1.3.7
• Make make setup recreate the venv with Python 3.11/3.12 and install through the venv
• Run dbt/DataLex commands through .venv/bin to avoid PATH drift
• Clear stale dbt target before seeding so Docker paths do not leak into local runs
• Mount host HOME in docker-compose so other dbt repos under the user's home path are visible inside Docker

Validation

• make doctor
• make seed
• make build
• datalex serve API check confirms the repo auto-attaches and exposes DataLex diagrams