# Independent Provenance Review: Xeno Framework-Neutral UI

## Review identity

- Component: Xeno-owned agent UI controller, semantic view model, DOM renderer, and explicit host adapters
- Replacement milestone: PROPRIETARY-UI-1
- Implementation record path: `ownership/evidence/PROPRIETARY-UI-1/implementation-record.md`
- Candidate revision: `87ae64b55aa1b8c2e126294e717b229e0945db65` plus recorded working-tree changes
- Reviewer: pending
- Domain reviewer (required): pending accessibility/browser security reviewer
- Review date (UTC): pending
- Reviewer independent of implementation: pending

## Evidence checks

- [ ] Behavioral contract predates or is independent from implementation work.
- [ ] Normative and public sources are listed with revisions and evidence paths.
- [ ] Contributor source-exposure disclosures are complete.
- [ ] No copied source, comments, tests, identifiers, non-normative constants, or distinctive internal structure were found.
- [ ] Controller lifecycle, permission restoration, and callback restoration are independently reviewed.
- [ ] DOM rendering has no HTML injection or active-URL bypass.
- [ ] Accessibility roles, names, focus, keyboard behavior, live regions, contrast, and reduced motion pass human review.
- [ ] Desktop and mobile visual smoke passes in supported browser/Electron hosts.
- [ ] React, React DOM, React types, and Electron package edges are absent from source, lock, bundle, package, and installed graph.
- [ ] Migration/versioning and first-party consumer disposition are approved.
- [ ] Licenses, trademarks, platform terms, and public ownership language have an explicit disposition.

## Verification summary

| Gate | Evidence | Result | Notes |
| --- | --- | --- | --- |
| Controller and semantic contract | focused Node tests | engineering pass | streaming, tools, cancel, retry, permission identity, and disposal covered |
| DOM interaction and accessibility structure | owned in-memory DOM fixture | engineering pass | browser screenshot and screen-reader review pending |
| Framework/runtime removal | package, lock, source, bundle, installed graph, ownership reports | engineering pass | React/React DOM/Electron absent |
| SDK regression | full Node suite | engineering pass | 501 pass, 2 platform skips, 0 failures |
| Package surface | build, dry-run, release smoke | engineering pass | UI bundle 16.01 KiB; clean package smoke passes |
| Migration | next-major migration guide | engineering pass | release/version owner approval pending |

## Decision

- Engineering provenance decision: needs-review
- Capability gate may be marked achieved: no
- Public clean-room/proprietary claim approved by this review: no
- Required follow-up: run human browser/Electron desktop and mobile visual/accessibility smoke, collect contributor disclosures, assign an independent reviewer, approve the breaking release version, and attach counsel disposition.
- Reviewer signature/date: pending
- Counsel approval reference: pending