Add Igor Assistant strategic brief endpoint for 7ya workflow module

[vepretski]

Motivation

• Provide a compact, risk-aware execution brief that converts live workflow KPIs and SOP state into a single-agent ("Igor Assistant OS") actionable agenda for always-on automation and decisioning.
• Surface priority queues and execution protocol guidance so an assistant can act without additional interpretation or manual synthesis.

Description

• Added build_igor_assistant_brief() to WorkflowProductModule which returns an identity_core, kpi_snapshot, alerts, priority_queue, and execution_protocol and supports risk_level (normal|elevated|crisis) and strategic_goal inputs.
• Exposed a new HTTP endpoint POST /api/igor/brief in WorkflowAPIHandler that calls the brief builder and returns the structured response.
• Documented the new endpoint and request/response fields in docs/7ya-workflow-module.md.
• Added unit test test_igor_assistant_brief_contains_execution_protocol_and_identity_core to tests/test_workflow_product_module.py validating the brief structure and identity/execution fields.

Testing

• Ran the module test suite file tests/test_workflow_product_module.py with the repository on PYTHONPATH using PYTHONPATH=. pytest -q tests/test_workflow_product_module.py, resulting in 5 passed.
• Running pytest -q tests/test_workflow_product_module.py without PYTHONPATH initially failed due to an import path error (ModuleNotFoundError: No module named 'src') in the test environment, which is environment configuration related and was resolved by running with PYTHONPATH=..

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Codex Task

[github-actions]

👋 Thanks for contributing @vepretski! We will review the pull request and get back to you soon.