[Spec] OAuth2 (scaffold)

_specs/oauth2/v1/assets/README.md

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+# Assets for this spec
+
+Use this folder for diagrams, images, and attachments referenced by pages in this spec.
+
+Suggested:
+- `assets/diagrams/`     — draw.io, Excalidraw, PlantUML exports, ERDs
+- `assets/images/`       — screenshots/static images
+- `assets/attachments/`  — PDFs, sheets, other binaries

_specs/oauth2/v1/data-model.md

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+---
+layout: spec
+title: OAuth2 — Data Model
+nav_title: "Data Model"
+nav_order: 25
+---
+# Data Model
+## ERD
+- Embed from `assets/diagrams/` or link to an ERD tool export.
+
+## Tables / Collections
+- Fields, types, indexes
+
+## Retention / Archival / PII
+- Classification & masking
+
+## Example Queries
+- …

_specs/oauth2/v1/index.md

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+---
+layout: spec
+epic: MXOP-1111
+family: OAuth2
+version: v1
+title: OAuth2
+status: in-progress
+stage: dev
+spec_version: "1.0.0"
+owner: "@pranavwani"
+team: ""
+created_at: 2025-09-12
+updated_at:
+tags: []
+changelog:
+  - date: 2025-09-12
+    text: "Initial scaffold from issue #70"
+nav_title: "Overview"
+nav_order: 0
+---
+## Summary
+OAuth2
+
+## Scope
+_No response_
+
+## Risks & assumptions
+_No response_
+
+## Related Docs
+- [UX](./ux.md)
+- [Data Model](./data-model.md)
+
+## Related Links
+- _No response_

_specs/oauth2/v1/ux.md

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+---
+layout: spec
+title: OAuth2 — UX
+nav_title: "UX"
+nav_order: 40
+---
+# UX
+## Personas & Jobs-to-be-Done
+- …
+
+## Use-cases / Scenarios
+- …
+
+## Information Architecture
+- Navigation map
+
+## Key Flows
+- Link wireframes in `assets/images/` or Figma
+
+## Screens / States
+- Loading/empty/error, edge cases
+
+## Content & Microcopy
+- Tone guidelines, validation messages
+
+## Accessibility
+- Keyboard flows, contrast, ARIA notes
+
+## Responsiveness & Platforms
+- Breakpoints
+
+## Telemetry
+- Events & properties for UX analysis