FastAPI Upper Bound — Pinned fastapi to >=0.136,<0.137 to prevent breakage from FastAPI 0.137+
which introduced incompatible changes with the current codebase.
Removed Parallel Behave Settings — Deleted parallel = 8 and parallel_scheme = "multiprocessing" from
[tool.behave] in pyproject.toml. Tests now run sequentially by default, aligning with the BDD convention
of isolated scenarios.
Updated AGENTS.md — Refreshed quick commands and dev setup instructions.
Documentation Alignment — Brought docs/getting-started/project_structure.md in sync with current layout.