feat: Add comprehensive product advisories for improved scanner functionality

- Introduced a blueprint for explainable quiet alerts, detailing phases for SBOM, VEX readiness, and attestations.
- Developed a roadmap for deterministic diff-aware rescans, enhancing scanner speed and efficiency.
- Implemented a hash-based SBOM layer cache to optimize container scans by reusing previous results.
- Created a multi-runtime reachability corpus to validate function-level reachability across various programming languages.
- Proposed a stable SBOM model using SPDX 3.0.1 for persistence and CycloneDX 1.6 for interchange.
- Established a validation plan for quiet scans, focusing on provenance and CI integration.
- Documented guidelines for the Findings Ledger module, outlining roles, execution rules, and testing protocols.

docs/implplan/archived/updates/2025-10-27-orch-operator-scope.md

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+# 2025-10-27 — Orchestrator operator scope & audit metadata
+
+## Summary
+
+- Introduced the `orch:operate` scope and `Orch.Operator` role in Authority to unlock Orchestrator control actions while keeping read-only access under `Orch.Viewer`.
+- Authority now enforces `operator_reason` and `operator_ticket` parameters on `/token` requests that include `orch:operate`; missing values yield `invalid_request` and no token is issued.
+- Client credentials audit events capture both fields (`request.reason`, `request.ticket`), giving SecOps traceability for every control action.
+
+## Next steps
+
+| Team | Follow-up | Target |
+|------|-----------|--------|
+| Console Guild | Wire UI control panels to request `operator_reason`/`operator_ticket` when exchanging tokens for orchestrator actions. | Sprint 23 stand-up |
+| CLI Guild | Add flags to `stella orch` subcommands to pass reason/ticket metadata before enabling mutations. | Sprint 23 stand-up |
+| Orchestrator Service | Enforce presence of `X-Stella-Reason`/`X-Stella-Ticket` (or equivalent metadata) on mutate endpoints and align audit logging. | ORCH-SVC-33-001 implementation |