- 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.
		
			
				
	
	
		
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			Markdown
		
	
	
	
	
	
# StellaOps Policy Engine
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Policy Engine compiles and evaluates Stella DSL policies deterministically, producing explainable findings with full provenance.
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## Responsibilities
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- Compile `stella-dsl@1` packs into executable graphs.
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- Join advisories, VEX evidence, and SBOM inventories to derive effective findings.
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- Expose simulation and diff APIs for UI/CLI workflows.
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- Emit change-stream driven events for Notify/Scheduler integrations.
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## Key components
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- `StellaOps.Policy.Engine` service host.
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- Shared libraries under `StellaOps.Policy.*` for evaluation, storage, DSL tooling.
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## Integrations & dependencies
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- MongoDB findings collections, RustFS explain bundles.
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- Scheduler for incremental re-evaluation triggers.
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- CLI/UI for policy authoring and runs.
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## Operational notes
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- DSL grammar and lifecycle docs in ../../policy/.
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- Observability guidance in ../../observability/policy.md.
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- Governance and scope mapping in ../../security/policy-governance.md.
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## Backlog references
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- DOCS-POLICY-20-001 … DOCS-POLICY-20-012 (completed baseline).
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- DOCS-POLICY-23-007 (upcoming command updates).
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## Epic alignment
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- **Epic 2 – Policy Engine & Editor:** deliver deterministic evaluation, DSL infrastructure, explain traces, and incremental runs.
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- **Epic 4 – Policy Studio:** integrate registry workflows, simulation at scale, approvals, and promotion semantics.
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