Show policy pressure reason counts

[hyeokjun32]

Summary

• print policy-pressure decision reason counts in the sustained CLI first-read line
• print the same reason counts in the EdgeEnv runtime feed contract checker
• document the reviewer navigation behavior in the orchestration summary contract docs

Portfolio impact

Reviewers can now see how often each scheduler pressure reason occurred before opening the raw JSON, while Orchestrator remains an operation evidence provider and Lab remains the final deployment decision owner.

Tests

• PYTHONDONTWRITEBYTECODE=1 .venv/bin/python -m pytest tests/test_multi_workload_sustained.py tests/test_scripts.py -q -p no:cacheprovider
• PYTHONDONTWRITEBYTECODE=1 .venv/bin/python -m pytest tests/test_docs_links.py -q -p no:cacheprovider
• PYTHONPATH=src PYTHONDONTWRITEBYTECODE=1 .venv/bin/python -m inferedge_orchestrator run-multi-workload-sustained --config configs/agent_multi_workload_sustained_device_local.json --output /tmp/orchestrator-policy-pressure-reasons.json --frames 4
• PYTHONDONTWRITEBYTECODE=1 .venv/bin/python -m pytest -q -p no:cacheprovider
• git diff --check