PR Template - Sprint 21 Task 03

Task

Define semantic versioning for manifest schema.

Summary

• Added schema version policy with semantic version parsing and supported range checks.

Scope

• src/pkg/orchestrator/manifest.py
• tests/unit/test_orchestrator_manifest.py

Validation

• PYTHONPATH=src .venv/bin/pytest -q tests/unit/test_orchestrator_manifest.py -k version