diff --git a/ROADMAP-UI.md b/ROADMAP-UI.md
index 90f3587..461f206 100644
--- a/ROADMAP-UI.md
+++ b/ROADMAP-UI.md
@@ -91,7 +91,19 @@ Shipped. Stale fallback colors purged (~65 instances), fonts self-hosted
 regressions (half-step tokens), theme settings default, surface overflow,
 and user menu zoom drift. See CHANGELOG.md.
 
-### v0.6.15 — Usability Survey Gate
+### v0.6.15 — User Display Audit
+
+Every place a user identity appears in the UI must show a human-readable
+name, never a UUID. Fallback chain: `display_name → username → "Unknown"`.
+
+| Step | Description |
+|------|-------------|
+| Participant display-name resolution | `chat-core` participants endpoint resolves `display_name` from the users table at query time instead of relying on a creation-time snapshot. If the stored `display_name` is empty, look up `users.display_name` or `users.username` by `participant_id`. |
+| Audit all user-facing identity surfaces | Walk every surface that shows user identity: chat participant list, chat message sender names, chat typing indicators, workflow assignees, team member lists, admin user list, notification actor names. Ensure the fallback chain is `display_name → username → "Unknown"` everywhere. |
+| SDK user-resolve utility | Add `sw.users.resolve(id)` or similar to the SDK — returns `{id, username, display_name, avatar}` with local caching. Surfaces use this instead of ad-hoc lookups. |
+| Stale snapshot cleanup | Remove or deprecate the static `display_name` column in the participants table. All display names come from the users table via the resolve utility. |
+
+### v0.6.16 — Usability Survey Gate
 
 Make the UI machine-auditable so Claude Code can run an automated survey.
 
@@ -102,7 +114,7 @@ Make the UI machine-auditable so Claude Code can run an automated survey.
 | Component coverage matrix | Markdown table: each kernel primitive (button, input, dropdown, dialog, toast, menu, tabs, avatar, spinner, tooltip, drawer, banner) × each surface that uses it. Identifies surfaces still using deprecated old-style components. |
 | Touch target audit | Script that finds all `<button>`, `[role=button]`, clickable elements across templates and JS, checks for `min-width/min-height ≥ 44px` on mobile breakpoint. |
 | Claude Code survey prompt | `docs/USABILITY-SURVEY.md` — structured prompt template that Claude Code can execute against the codebase. Sections: viewport correctness, banner integration, responsive behavior, styling consistency, accessibility basics (contrast, touch targets, focus indicators), component uniformity. Each section has pass/fail criteria and file paths to inspect. |
-| Survey dry-run | Run the survey. Fix anything it catches. Tag `v0.6.15` only after clean survey. |
+| Survey dry-run | Run the survey. Fix anything it catches. Tag `v0.6.16` only after clean survey. |
 
 ---
 
@@ -121,7 +133,9 @@ v0.6.13 Responsive & Spacing    ✅ SHIPPED
   ↓
 v0.6.14 Visual Polish           ✅ SHIPPED
   ↓
-v0.6.15 Usability Survey Gate   ← Machine-audit the finished product
+v0.6.15 User Display Audit     ← No UUIDs in the UI, ever
+  ↓
+v0.6.16 Usability Survey Gate   ← Machine-audit the finished product
 ```
 
 Each version is independently shippable and testable. No version depends on