issue-298 — verification evidence

The change is presentation-only, so the proof is: the existing behaviour suite still passes untouched surfaces, the same three commands CI and the Pages publish run come back clean, and the rendered screens match the signed-off design (../design/). Captured 2026-08-26 on claude/github-issue-298-pi4sfr.

Lint (oxlint, type-aware)

$ bun run lint
$ oxlint --type-aware
(exit 0, no findings)

Tests (vitest — unit + React, demo transport)

$ bun run test
 Test Files  12 passed (12)
      Tests  168 passed (168)

Two tests were updated for retired presentation (the "Outer loop ·" heading became the rail-role assertion; the question card's kicker is now "The loop asks"); every behavioural assertion — sidebar rows, grouping, inbox actions, gate approval, replies, transcript rendering, deep links, standing-session verbs, config editor — is unchanged and green.

Build (tsc --noEmit, then the production bundle)

$ bun run build
✓ 54 modules transformed.
dist/index.html                   0.64 kB │ gzip:  0.38 kB
dist/assets/index-Dt6Em9Ye.css   30.72 kB │ gzip:  5.88 kB
dist/assets/index-0Fn8ZU8B.js   288.58 kB │ gzip: 88.98 kB
✓ built in 1.38s

UI / visual (screenshots, demo fixture, 1440×900)

Captured from the Vite dev server in demo mode with headless Chromium:

Screen	File	Design reference
Work — default canvas (most recent item)	overview.png	Control Plane.dc.html
Work — item canvas (rail, trace, chat)	item.png	Control Plane.dc.html
Work — standing sessions	standing.png	restyled, not in the export
Settings	settings.png	Settings.dc.html

(The Events screen retired in round two, so it captures nothing; the event trail appears in overview.png as the trace's fallback for an item with no session.)

Not run, and why

• Contract / integration / performance — n/a: no API, route, model-join or control-verb change; ui/src/api/, ui/src/state/ and ui/src/demo/ are untouched.
• Live-service pass — no workstation service in this environment; the demo transport exercises the same record shapes and verbs.