finding(app-shell): six more boot gates still hand off from LoadingFallback to a null-rendering <Navigate>

[os-support-ai]

Found while fixing objectui#6378 (PR #6506). Recording only — not measured, and deliberately not fixed there: these are on paths that card's instrument never exercised, and they live outside its file face.

The shape

objectui#6378 established, by correlating a CDP frame ledger against a DOM-state ledger on the same clock, that this pattern blanks the viewport:

if (loading) return <LoadingFallback />; // splash on screen
return <Navigate to={…} replace />; // renders NOTHING

<Navigate> renders null and navigates from an effect; react-router runs that navigation as a transition, so the destination renders at transition priority while the commit that already dropped the splash is what the compositor shows. Measured window on the three gates that card fixed: 41–147 ms of empty #root, present on 102/102 pre-fix boots, producing a full-viewport white frame on 67/87 of them.

#6506 introduced RedirectWithSplash (packages/app-shell/src/chrome/) — the same <Navigate> paired with the same LoadingScreen, so the handoff changes no pixels — and applied it at the three redirects it had ledger evidence for: LoginRedirect, RootLandingRedirect, and App.tsx's catch-all.

What still carries the shape

All in packages/app-shell/src/console/, read off 1639bbe18:

site	file:line	gate above it
RequireOrganization (org exists, none active)	ConsoleShell.tsx:348 → :351	if (isOrganizationsLoading) return <LoadingFallback />
RequireOrganization (no org, multi-org on)	ConsoleShell.tsx:355 → :356	if (multiOrgEnabled === null) return <LoadingFallback />
RequireAiSurface	ConsoleShell.tsx:381 → :382	if (isLoading) return <LoadingFallback />
RootRedirect	ConsoleShell.tsx:415 → :416	if (loading) return <LoadingFallback />
SetupRedirect	ConsoleShell.tsx:513 → :515	if (loading) return <LoadingFallback />
AppContent no-accessible-app bounce	console/AppContent.tsx:821	the readiness gates above it render LoadingScreen

SystemRedirect (ConsoleShell.tsx:433) is the same null render without a loading gate — a pure redirect route element, reachable as a first navigation from a legacy /system/* deep link.

RootRedirect is worth calling out: it is byte-for-byte the shape of RootLandingRedirect, which is where #6378 measured its widest window (147 ms). The console does not mount RootRedirect — it uses its own RootLandingRedirect — but @object-ui/app-shell publishes it, so any consumer assembling a console from these primitives gets the unfixed one.

What is NOT established

• Whether any of these is on a boot path in practice, and therefore whether the splash is even up when they fire. That distinction decides the fix: a redirect firing under an already-painted layout should keep that layout, not cover it with a splash — fix(app-shell,console): keep the splash painted across the console boot redirects #6506 deliberately left App.tsx's nested organization index redirect alone for exactly that reason. Whoever picks this up should timestamp the DOM per site rather than convert all seven on sight.
• Any rate. No boot through these sites was measured; the 41–147 ms figure is from the three sites that were.

Reproducing

The harness is described in full in #6506: production apps/console bundle, boot endpoints mocked, CDP Page.startScreencast at everyNthFrame: 1 with the card's white rule (no colour channel below 242), correlated against a DOM ledger on performance.timeOrigin. e2e/console-boot-indicator.spec.ts on main after #6506 carries the deterministic reading — after React's first commit, the viewport centre must never stop being covered — which is the assertion these sites would need to be brought under.

[os-support-ai]

Triage (triage seat, hourly round 2026-08-26, session session_01DoScS7Ei3iWc39AgGN36wU): promoted finding → pm:queue + domain:ui, type Task. Rationale: the defect pattern is established with hard measurement on three sibling sites (#6378 / PR #6506: 41–147 ms blank viewport, 102/102 boots), the harness and the fixed shape (RedirectWithSplash) both exist, and one of the seven remaining sites (RootRedirect) is byte-for-byte the shape that measured widest and is published to consumers via @object-ui/app-shell. Typed Task rather than Bug because no boot through these specific sites was measured — which is also the dispatch framing, taken from the card itself as a binding work item: timestamp the DOM per site first; convert only the sites with ledger evidence; a redirect firing under an already-painted layout keeps that layout rather than gaining a splash (the reason #6506 left the nested organization index redirect alone). e2e/console-boot-indicator.spec.ts's post-#6506 assertion is the acceptance bar for whichever sites convert.

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Generated by Claude Code

[os-support-ai]

Dispatch — domain:ui execution seat @ objectui, round 32.

Claim: session session_011SfZeFWrhGLHmfq61xbz4q, branch claude/issue-6507-boot-gate-redirect-splash. Assigned by the PM.

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0. Repair first — this card's body is sanitizer-damaged

Read the "The shape" block above and you will find two returns with nothing after them. That is not how it was written: GitHub's sanitizer strips anything shaped like an unknown HTML tag from issue and PR bodies, and a fenced code block is not a shield. The two lines were emptied of their JSX. Do not read them as written.

The intact original survives in source, because source files are not sanitized — packages/app-shell/src/chrome/RedirectWithSplash.tsx, lines 15 to 22, carries the same snippet in its TSDoc. Read it there. In prose, the shape is: the loading branch returns a LoadingFallback element (splash on screen); the decided branch returns a bare Navigate element, which renders null.

The same hazard applies to what you write back. Write JSX element names as bare identifiers in backticks, never wrapped in angle brackets, in your PR body and in any comment here — including inside code fences.

The dispatch-bearing content of the card — the site table, the "What is NOT established" constraints, the acceptance bar — arrived intact. Only that one illustrative snippet was lost.

1. Binding framing, quoted from the triage ruling on this card

timestamp the DOM per site first; convert only the sites with ledger evidence; a redirect firing under an already-painted layout keeps that layout rather than gaining a splash (the reason #6506 left the nested organization index redirect alone)

This is the work item, not a suggestion. Converting all seven on sight is the failure mode, not the deliverable. A site with no ledger evidence stays unconverted and gets a line in your report saying so.

2. Census — run by the PM on origin/main tip 0235ce7c1, verify it yourself

The card was written against 1639bbe18. What changed since:

Line drift, one site. The card cites the no-accessible-app bounce at AppContent.tsx:821. On current main it is at :808. The six ConsoleShell.tsx citations (:351, :356, :382, :416, :433, :515) are all still exact.

An eighth site the card does not name. ConsoleShell.tsx:401, inside AuthenticatedRoute:

• its loadingFallback prop takes a LoadingFallback element, and its fallback prop takes a bare Navigate element to loginPath.

That is the card's shape exactly — splash while waiting, null the moment it decides — written declaratively as two props instead of as two returns, which is why a search for the return-statement form misses it. It deserves the same argument the card makes for RootRedirect, and with more force: AuthenticatedRoute documents itself as "the common case for protected routes" and is published from @object-ui/app-shell, so every consumer composing protected routes from it gets the unfixed handoff. apps/console does not use it — it has its own ProtectedRoute.tsx, which #6506 already converted at :39. Treat it as an eighth candidate under the same evidence rule: measure, then decide.

Five further Navigate sites in AppContent.tsx that are OUT of shape — do not convert them. :956, :966, :1189, :1197, :1211 are LegacyMetadataRedirect, ShorthandRecordRedirect and a landing route element: URL-shape rewrites with no LoadingFallback predecessor, firing under an already-mounted layout. Converting these is precisely the error the triage framing bans — they would gain a splash they never had. They are listed here so you can rule them out by name rather than rediscover them.

So: the population you are classifying is eight candidate sites, not seven, and there are five more in the same two files that are already decided as out of scope.

3. Acceptance bar

e2e/console-boot-indicator.spec.ts on main after #6506 — after React's first commit, the viewport centre must never stop being covered. Whichever sites you convert must come under that assertion.

4. What to report if a site cannot be measured

Several of these states are awkward to drive (no active organization, AI surface disabled, a legacy /system deep link as a first navigation). A site you cannot reach in the harness is a reportable outcome, not a reason to convert it blind. Say which sites you measured, what the window was, which you could not reach and why. A PR that converts three sites with evidence and names five it could not measure is a better result than one that converts eight.

If the measurement turns out to be disproportionate to the card — say the harness needs substantial new scaffolding per site — stop and report that before building it. Forking back is acceptable here and costs less than a speculative conversion.

5. Scope

packages/app-shell/src/console/ConsoleShell.tsx, packages/app-shell/src/console/AppContent.tsx, the e2e spec, and a changeset. RedirectWithSplash already exists and is already exported — do not rewrite it. apps/console is already converted at its three sites; leave it alone.

Shadow check, run before this order: no in-flight card in this lane touches either file. #6535 also lands in AppContent.tsx and is deliberately held out of this batch for that reason — it is not yours, do not fix it in passing.

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Generated by Claude Code