feat(studio): add "Local / Custom (this env)" scope to the package selector

[os-zhuang]

Why

Found while dogfooding Studio in a self-hosted, metadata-customizable environment
(single-tenant — there is no org dimension; the real axis is code package vs.
runtime / DB-authored).

The Studio package selector only ever listed code packages. Metadata authored
at runtime (a custom object you create in Studio) is correctly org-scoped —
package_id = null, sys_metadata provenance — so it was filtered out of every
code-package view. Navigating to such an item redirected to "new" (it wasn't in
the active package's list), even though the object existed and was editable.

This was surfaced by framework #2252 + objectui #1937: those stop runtime metadata
from being mis-stamped into a loaded code package (so it stays editable), which
correctly leaves it package_id = null — and therefore invisible under any code
package. This PR closes that last gap by making the local scope a first-class,
always-present selector entry.

What

• ContextSelectors (the app-level scope dropdown): append a stable
  "Local / Custom (this env)" option (value sys_metadata) for the package
  selector. The metadata list/get API already treats ?package=sys_metadata as
  exactly this local scope (read returns package_id = null items; write persists
  package_id = null). Kept the sentinel/label inline to avoid an import cycle
  with the metadata-admin views.
• StudioHomePage / DirectoryPage / ResourceListPage: accept the local
  scope (so it no longer redirects) and show this environment's runtime-authored
  items. Deduplicated three identical package-list builders into a shared
  buildPackageScopeOptions helper (package-scope.ts).
• ResourceListPage client-side scope filter: the Local scope matches
  untagged / sys_metadata rows (previously they "never matched", per the old
  comment).
• Studio home grid: under the Local scope, show every runtime-creatable type
  so you can start authoring locally even with zero items yet.
• i18n: engine.package.local (en + zh).

Verification (browser, console dev server → showcase backend)

• Selector shows 本地 / 自定义（本环境）; selecting it lists this environment's
  runtime objects (e.g. asset_verify, source = 运行时).
• Clicking such an object opens it (no redirect to "new"), fully editable, no
  read-only banner — the end-to-end repro of the original bug now passes.
• @object-ui/app-shell ContextSelectors tests green; lint clean (only the
  pre-existing react-hooks/static-components warnings shared with main).

🤖 Generated with Claude Code

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
objectui	Ignored		Jun 24, 2026 4:34am

[github-actions]

✅ Console Performance Budget

Metric	Value	Budget
Main entry (gzip)	58.8 KB	350 KB
Entry file	index-ER321fLx.js	—
Status	PASS	—

---

📦 Bundle Size Report

Package	Size	Gzipped
app-shell (index.js)	6.59KB	2.34KB
app-shell (runtime-config.js)	4.72KB	1.69KB
app-shell (types.js)	0.01KB	0.04KB
auth (AuthContext.js)	0.31KB	0.24KB
auth (AuthGuard.js)	1.17KB	0.53KB
auth (AuthProvider.js)	17.16KB	3.44KB
auth (AuthShell.js)	3.49KB	1.40KB
auth (ForgotPasswordForm.js)	4.79KB	1.88KB
auth (LoginForm.js)	5.11KB	1.92KB
auth (PreviewBanner.js)	0.90KB	0.50KB
auth (RegisterForm.js)	6.63KB	2.15KB
auth (SocialSignInButtons.js)	8.89KB	3.61KB
auth (UserMenu.js)	3.40KB	1.22KB
auth (authStyles.js)	5.04KB	1.72KB
auth (createAuthClient.js)	24.74KB	6.00KB
auth (createAuthenticatedFetch.js)	3.33KB	1.32KB
auth (index.js)	1.75KB	0.76KB
auth (types.js)	0.59KB	0.35KB
auth (useAuth.js)	4.01KB	0.79KB
auth (useIsWorkspaceAdmin.js)	1.28KB	0.70KB
collaboration (CommentThread.js)	18.38KB	4.49KB
collaboration (LiveCursors.js)	3.17KB	1.27KB
collaboration (PresenceAvatars.js)	3.65KB	1.42KB
collaboration (PresenceProvider.js)	2.42KB	0.96KB
collaboration (index.js)	1.25KB	0.53KB
collaboration (useCommentSearch.js)	1.98KB	0.88KB
collaboration (useConflictResolution.js)	7.75KB	1.86KB
collaboration (useMentionNotifications.js)	1.81KB	0.68KB
collaboration (usePresence.js)	6.33KB	1.84KB
collaboration (useRealtimeSubscription.js)	7.91KB	2.01KB
components (index.js)	415.54KB	88.49KB
core (index.js)	1.52KB	0.55KB
create-plugin (index.js)	9.28KB	2.98KB
data-objectstack (index.js)	99.69KB	24.89KB
fields (index.js)	166.21KB	40.08KB
i18n (LocalizationContext.js)	1.76KB	0.96KB
i18n (currency.js)	1.22KB	0.64KB
i18n (i18n.js)	4.32KB	1.77KB
i18n (index.js)	2.46KB	0.96KB
i18n (pickLocalized.js)	1.31KB	0.67KB
i18n (provider.js)	5.37KB	1.72KB
i18n (useObjectLabel.js)	21.15KB	4.68KB
i18n (useSafeTranslation.js)	2.68KB	0.98KB
layout (index.js)	36.30KB	10.04KB
mobile (MobileProvider.js)	0.92KB	0.49KB
mobile (ResponsiveContainer.js)	0.94KB	0.38KB
mobile (breakpoints.js)	1.51KB	0.70KB
mobile (createOfflineDataSource.js)	5.61KB	1.74KB
mobile (index.js)	1.50KB	0.62KB
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
mobile (useGesture.js)	4.42KB	1.27KB
mobile (useOfflineSync.js)	1.99KB	0.72KB
mobile (usePullToRefresh.js)	2.53KB	0.85KB
mobile (useResponsive.js)	0.71KB	0.42KB
mobile (useResponsiveConfig.js)	1.36KB	0.63KB
mobile (useSpecGesture.js)	1.77KB	0.77KB
mobile (useTouchTarget.js)	1.01KB	0.54KB
permissions (MePermissionsProvider.js)	5.09KB	1.84KB
permissions (PermissionContext.js)	0.31KB	0.25KB
permissions (PermissionGuard.js)	0.89KB	0.45KB
permissions (PermissionProvider.js)	3.46KB	1.03KB
permissions (evaluator.js)	4.00KB	1.23KB
permissions (index.js)	0.91KB	0.41KB
permissions (store.js)	0.91KB	0.42KB
permissions (useFieldPermissions.js)	1.28KB	0.52KB
permissions (usePermissions.js)	1.50KB	0.70KB
plugin-ai (index.js)	15.71KB	3.79KB
plugin-calendar (index.js)	45.98KB	12.65KB
plugin-charts (index.js)	45.71KB	12.82KB
plugin-chatbot (index.js)	153.41KB	37.19KB
plugin-dashboard (index.js)	106.67KB	26.41KB
plugin-designer (index.js)	213.42KB	42.94KB
plugin-detail (index.js)	195.59KB	47.19KB
plugin-editor (index.js)	2.38KB	1.06KB
plugin-form (index.js)	93.24KB	22.71KB
plugin-gantt (index.js)	133.11KB	32.92KB
plugin-grid (index.js)	115.41KB	31.01KB
plugin-kanban (index.js)	48.82KB	13.13KB
plugin-list (index.js)	94.53KB	22.32KB
plugin-map (index.js)	16.02KB	4.98KB
plugin-markdown (index.js)	13.58KB	4.64KB
plugin-report (index.js)	37.83KB	9.97KB
plugin-timeline (index.js)	25.37KB	7.20KB
plugin-tree (index.js)	8.04KB	2.70KB
plugin-view (index.js)	84.45KB	20.36KB
providers (DataSourceProvider.js)	0.75KB	0.39KB
providers (MetadataProvider.js)	1.37KB	0.59KB
providers (ThemeProvider.js)	1.55KB	0.67KB
providers (UploadProvider.js)	11.71KB	3.53KB
providers (index.js)	0.44KB	0.22KB
providers (types.js)	0.01KB	0.04KB
react (LazyPluginLoader.js)	3.77KB	1.33KB
react (SchemaRenderer.js)	17.06KB	5.59KB
react (index.js)	0.76KB	0.42KB
tenant (TenantContext.js)	0.31KB	0.25KB
tenant (TenantGuard.js)	1.04KB	0.43KB
tenant (TenantProvider.js)	2.76KB	0.98KB
tenant (TenantScopedQuery.js)	0.77KB	0.44KB
tenant (index.js)	0.75KB	0.38KB
tenant (resolver.js)	2.64KB	0.76KB
tenant (useTenant.js)	0.50KB	0.32KB
tenant (useTenantBranding.js)	0.62KB	0.39KB
types (ai.js)	0.20KB	0.17KB
types (api-types.js)	0.20KB	0.18KB
types (app.js)	2.87KB	0.99KB
types (base.js)	0.20KB	0.18KB
types (blocks.js)	0.20KB	0.18KB
types (complex.js)	0.20KB	0.18KB
types (crud.js)	0.20KB	0.18KB
types (data-display.js)	0.20KB	0.18KB
types (data-protocol.js)	0.20KB	0.19KB
types (data.js)	0.20KB	0.18KB
types (designer.js)	0.77KB	0.41KB
types (disclosure.js)	0.20KB	0.18KB
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)	1.54KB	0.68KB
types (layout.js)	0.20KB	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 (registry.js)	0.20KB	0.18KB
types (reports.js)	0.20KB	0.18KB
types (spec-report.js)	5.26KB	1.96KB
types (tenant.js)	0.20KB	0.18KB
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