feat: Add documentation and task tracking for Sprints 508 to 514 in Ops & Offline

- Created detailed markdown files for Sprints 508 (Ops Offline Kit), 509 (Samples), 510 (AirGap), 511 (Api), 512 (Bench), 513 (Provenance), and 514 (Sovereign Crypto Enablement) outlining tasks, dependencies, and owners.
- Introduced a comprehensive Reachability Evidence Delivery Guide to streamline the reachability signal process.
- Implemented unit tests for Advisory AI to block known injection patterns and redact secrets.
- Added AuthoritySenderConstraintHelper to manage sender constraints in OpenIddict transactions.

docs/implplan/SPRINT_209_ui_i.md

@@ -0,0 +1,24 @@
+# Sprint 209 - Experience & SDKs · 180.E) UI.I
+
+Active items only. Completed/historic work now resides in docs/implplan/archived_sprints_tasks.md (updated 2025-11-08).
+
+[Experience & SDKs] 180.E) UI.I
+Depends on: Sprint 120.A - AirGap, Sprint 130.A - Scanner, Sprint 150.A - Orchestrator, Sprint 170.A - Notifier
+Summary: Experience & SDKs focus on UI (phase I).
+Task ID | State | Task description | Owners (Source)
+--- | --- | --- | ---
+UI-AOC-19-001 | TODO | Add Sources dashboard tiles showing AOC pass/fail, recent violation codes, and ingest throughput per tenant. | UI Guild (src/UI/StellaOps.UI/TASKS.md)
+UI-AOC-19-002 | TODO | Implement violation drill-down view highlighting offending document fields and provenance metadata. Dependencies: UI-AOC-19-001. | UI Guild (src/UI/StellaOps.UI/TASKS.md)
+UI-AOC-19-003 | TODO | Add "Verify last 24h" action triggering AOC verifier endpoint and surfacing CLI parity guidance. Dependencies: UI-AOC-19-002. | UI Guild (src/UI/StellaOps.UI/TASKS.md)
+UI-EXC-25-001 | TODO | Build Exception Center (list + kanban) with filters, sorting, workflow transitions, and audit views. | UI Guild, Governance Guild (src/UI/StellaOps.UI/TASKS.md)
+UI-EXC-25-002 | TODO | Implement exception creation wizard with scope preview, justification templates, timebox guardrails. Dependencies: UI-EXC-25-001. | UI Guild (src/UI/StellaOps.UI/TASKS.md)
+UI-EXC-25-003 | TODO | Add inline exception drafting/proposing from Vulnerability Explorer and Graph detail panels with live simulation. Dependencies: UI-EXC-25-002. | UI Guild (src/UI/StellaOps.UI/TASKS.md)
+UI-EXC-25-004 | TODO | Surface exception badges, countdown timers, and explain integration across Graph/Vuln Explorer and policy views. Dependencies: UI-EXC-25-003. | UI Guild (src/UI/StellaOps.UI/TASKS.md)
+UI-EXC-25-005 | TODO | Add keyboard shortcuts (`x`,`a`,`r`) and ensure screen-reader messaging for approvals/revocations. Dependencies: UI-EXC-25-004. | UI Guild, Accessibility Guild (src/UI/StellaOps.UI/TASKS.md)
+UI-GRAPH-21-001 | TODO | Align Graph Explorer auth configuration with new `graph:*` scopes; consume scope identifiers from shared `StellaOpsScopes` exports (via generated SDK/config) instead of hard-coded strings. | UI Guild (src/UI/StellaOps.UI/TASKS.md)
+UI-GRAPH-24-001 | TODO | Build Graph Explorer canvas with layered/radial layouts, virtualization, zoom/pan, and scope toggles; initial render <1.5s for sample asset. Dependencies: UI-GRAPH-21-001. | UI Guild, SBOM Service Guild (src/UI/StellaOps.UI/TASKS.md)
+UI-GRAPH-24-002 | TODO | Implement overlays (Policy, Evidence, License, Exposure), simulation toggle, path view, and SBOM diff/time-travel with accessible tooltips/AOC indicators. Dependencies: UI-GRAPH-24-001. | UI Guild, Policy Guild (src/UI/StellaOps.UI/TASKS.md)
+UI-GRAPH-24-003 | TODO | Deliver filters/search panel with facets, saved views, permalinks, and share modal. Dependencies: UI-GRAPH-24-002. | UI Guild (src/UI/StellaOps.UI/TASKS.md)
+UI-GRAPH-24-004 | TODO | Add side panels (Details, What-if, History) with upgrade simulation integration and SBOM diff viewer. Dependencies: UI-GRAPH-24-003. | UI Guild (src/UI/StellaOps.UI/TASKS.md)
+UI-GRAPH-24-006 | TODO | Ensure accessibility (keyboard nav, screen reader labels, contrast), add hotkeys (`f`,`e`,`.`), and analytics instrumentation. Dependencies: UI-GRAPH-24-004. | UI Guild, Accessibility Guild (src/UI/StellaOps.UI/TASKS.md)
+UI-LNM-22-001 | TODO | Build Evidence panel showing policy decision with advisory observations/linksets side-by-side, conflict badges, AOC chain, and raw doc download links. Docs `DOCS-LNM-22-005` waiting on delivered UI for screenshots + flows. | UI Guild, Policy Guild (src/UI/StellaOps.UI/TASKS.md)