fix(form): scroll+focus the first errored field on invalid submit (#2793)

[os-zhuang]

Closes #2793 — found during the framework internal-training dogfood.

What #2793 actually needed

The issue asked for two things on an invalid submit: a toast naming the missing fields, and scroll/focus to the first errored field.

Verifying at the code level first (the lesson from #3419): the toast half already shipped in #2329 (2026-07-06, before the 07-23 dogfood observation). The original "no toast" was almost certainly the framework showcase's stale bundled console (a prebuilt objectui artifact that lagged main), not a live bug.

The scroll/focus half was genuinely still missing — no scrollIntoView/setFocus/shouldFocusError anywhere. react-hook-form's native focus-on-error only reaches fields whose registered ref is a focusable native input; it silently no-ops for custom widgets (lookup / select / master-detail), which is exactly the reported field.

The fix

• Disable RHF's unreliable shouldFocusError (it no-ops for custom widgets and would fight our explicit handler).
• In the onInvalid handler, after the existing toast, scroll the first errored field in visual/declared order (not RHF's error-key order) into view via its data-field wrapper, and focus a focusable control inside it. Works for every field type; scoped to this form via a ref so it never reaches a sibling form.

Verification

• New RTL DOM test renders the real form renderer through the component registry and asserts real behavior: missing required field → toast + scroll + focus the first error; picks the first errored field when an earlier one is valid; stays quiet on a valid submit.
• Red-checked against the pre-fix code (the two scroll assertions fail without the block).
• Full plugin-form/components form-renderer suite (15) and type-check pass — no regression from the shouldFocusError change.
• Browser verification was blocked: the shared framework checkout's showcase won't boot right now (a concurrent composite-externalId migration left it mid-flight — externalId: expected string, received array). The DOM test renders the actual component to compensate; I did not touch the shared checkout.

Note

This closes #2793 by delivering its remaining half; the toast half pre-existed (#2329).

🤖 Generated with Claude Code

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
objectui	Ignored		Jul 24, 2026 4:22pm

[github-actions]

✅ Console Performance Budget

Metric	Value	Budget
Main entry (gzip)	28.0 KB	350 KB
Entry file	index-DM8sqbrx.js	—
Status	PASS	—

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📦 Bundle Size Report

Package	Size	Gzipped
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app-shell (runtime-config.js)	7.42KB	2.32KB
app-shell (types.js)	0.01KB	0.04KB
app-shell (urlParams.js)	7.57KB	2.97KB
auth (AuthContext.js)	0.31KB	0.24KB
auth (AuthGuard.js)	1.17KB	0.53KB
auth (AuthProvider.js)	21.70KB	4.21KB
auth (AuthShell.js)	3.49KB	1.40KB
auth (ForgotPasswordForm.js)	12.12KB	3.41KB
auth (LoginForm.js)	17.86KB	5.29KB
auth (PreviewBanner.js)	0.90KB	0.50KB
auth (RegisterForm.js)	6.43KB	2.09KB
auth (SocialSignInButtons.js)	9.60KB	3.89KB
auth (UserMenu.js)	3.40KB	1.22KB
auth (auth-gate-events.js)	1.29KB	0.66KB
auth (authStyles.js)	5.04KB	1.72KB
auth (createAuthClient.js)	33.74KB	8.53KB
auth (createAuthenticatedFetch.js)	4.37KB	1.69KB
auth (index.js)	1.83KB	0.79KB
auth (phone-identifier.js)	1.11KB	0.66KB
auth (types.js)	0.59KB	0.35KB
auth (useAuth.js)	4.86KB	0.85KB
auth (useIsWorkspaceAdmin.js)	1.61KB	0.85KB
collaboration (CommentThread.js)	18.38KB	4.49KB
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collaboration (PresenceProvider.js)	2.79KB	1.13KB
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create-plugin (index.js)	9.28KB	2.98KB
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fields (index.js)	211.69KB	51.79KB
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i18n (currency.js)	1.22KB	0.64KB
i18n (i18n.js)	4.32KB	1.77KB
i18n (index.js)	2.46KB	0.96KB
i18n (pickLocalized.js)	1.70KB	0.83KB
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layout (index.js)	38.45KB	10.67KB
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mobile (ResponsiveContainer.js)	0.94KB	0.38KB
mobile (breakpoints.js)	1.51KB	0.70KB
mobile (createOfflineDataSource.js)	5.61KB	1.74KB
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mobile (offlineQueue.js)	3.91KB	1.35KB
mobile (pwa.js)	0.97KB	0.49KB
mobile (serviceWorker.js)	1.48KB	0.62KB
mobile (serviceWorkerSource.js)	3.41KB	1.48KB
mobile (useBreakpoint.js)	1.54KB	0.65KB
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plugin-designer (index.js)	210.92KB	42.69KB
plugin-detail (index.js)	214.78KB	52.42KB
plugin-editor (index.js)	2.46KB	1.10KB
plugin-form (index.js)	103.47KB	25.10KB
plugin-gantt (index.js)	162.33KB	39.53KB
plugin-grid (index.js)	174.13KB	45.90KB
plugin-kanban (index.js)	47.82KB	13.18KB
plugin-list (index.js)	98.59KB	23.27KB
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react (index.js)	1.00KB	0.55KB
sdui-parser (codegen.js)	4.09KB	1.74KB
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types (feedback.js)	0.20KB	0.18KB
types (field-types.js)	0.20KB	0.18KB
types (form.js)	0.20KB	0.18KB
types (index.js)	2.02KB	0.95KB
types (layout.js)	0.20KB	0.18KB
types (managed-by.js)	0.19KB	0.18KB
types (mobile.js)	0.20KB	0.18KB
types (navigation.js)	0.20KB	0.18KB
types (objectql.js)	0.20KB	0.18KB
types (overlay.js)	0.20KB	0.18KB
types (permissions.js)	0.20KB	0.18KB
types (plugin-scope.js)	0.20KB	0.18KB
types (record-components.js)	0.20KB	0.19KB
types (record-semantics.js)	1.28KB	0.67KB
types (registry.js)	0.20KB	0.18KB
types (reports.js)	0.20KB	0.18KB
types (spec-report.js)	5.26KB	1.96KB
types (system-fields.js)	2.39KB	1.17KB
types (theme.js)	0.20KB	0.18KB
types (ui-action.js)	0.75KB	0.46KB
types (views.js)	0.20KB	0.18KB
types (widget.js)	0.20KB	0.18KB

Size Limits

• ✅ Core packages should be < 50KB gzipped
• ✅ Component packages should be < 100KB gzipped
• ⚠️ Plugin packages should be < 150KB gzipped