- Introduced AGENTS.md, README.md, TASKS.md, and implementation_plan.md for Vexer, detailing mission, responsibilities, key components, and operational notes. - Established similar documentation structure for Vulnerability Explorer and Zastava modules, including their respective workflows, integrations, and observability notes. - Created risk scoring profiles documentation outlining the core workflow, factor model, governance, and deliverables. - Ensured all modules adhere to the Aggregation-Only Contract and maintain determinism and provenance in outputs.
StellaOps Policy Engine
Policy Engine compiles and evaluates Stella DSL policies deterministically, producing explainable findings with full provenance.
Responsibilities
- Compile 
stella-dsl@1packs into executable graphs. - Join advisories, VEX evidence, and SBOM inventories to derive effective findings.
 - Expose simulation and diff APIs for UI/CLI workflows.
 - Emit change-stream driven events for Notify/Scheduler integrations.
 
Key components
StellaOps.Policy.Engineservice host.- Shared libraries under 
StellaOps.Policy.*for evaluation, storage, DSL tooling. 
Integrations & dependencies
- MongoDB findings collections, RustFS explain bundles.
 - Scheduler for incremental re-evaluation triggers.
 - CLI/UI for policy authoring and runs.
 
Operational notes
- DSL grammar and lifecycle docs in ../../policy/.
 - Observability guidance in ../../observability/policy.md.
 - Governance and scope mapping in ../../security/policy-governance.md.
 
Backlog references
- DOCS-POLICY-20-001 … DOCS-POLICY-20-012 (completed baseline).
 - DOCS-POLICY-23-007 (upcoming command updates).
 
Epic alignment
- Epic 2 – Policy Engine & Editor: deliver deterministic evaluation, DSL infrastructure, explain traces, and incremental runs.
 - Epic 4 – Policy Studio: integrate registry workflows, simulation at scale, approvals, and promotion semantics.