docs(objectui): remove phantom tab-level lazy/source and badge/badgeVariant from layout-dsl

content/docs/protocol/objectui/layout-dsl.mdx

@@ -429,34 +429,32 @@ Address
 
 ## Tabs: Multi-Page Layouts
 
-Organize large forms into tabbed sections.
+Organize large forms into tabs. A tabbed form has **no separate tab list** — set
+`type: tabbed` and **every section renders as its own tab**, in declaration
+order. `defaultTab` names the section that opens first; `tabPosition` places the
+strip.
 
 ### Basic Tabs
 
 ```yaml
-layout:
- mode: tabbed
- tabs:
- - name: details
- label: Details
- icon: file-text
- sections:
- - label: Basic Info
- fields: [name, email, phone]
-
- - name: address
- label: Address
- icon: map-pin
- sections:
- - label: Primary Address
- fields: [street, city, state, zip]
-
- - name: preferences
- label: Preferences
- icon: settings
- sections:
- - label: Notifications
- fields: [email_notifications, sms_notifications]
+type: tabbed
+tabPosition: top # top | bottom | left | right
+defaultTab: details # a section `name`
+
+sections:
+ - name: details
+ label: Details
+ columns: 2
+ fields: [name, email, phone]
+
+ - name: address
+ label: Address
+ columns: 2
+ fields: [street, city, state, zip]
+
+ - name: preferences
+ label: Preferences
+ fields: [email_notifications, sms_notifications]
 ```
 
 **Rendered:**
@@ -465,46 +463,44 @@ layout:
 │ [Details] [Address] [Preferences] │
 ├──────────────────────────────────────────────────┤
 │ │
-│ Basic Info │
 │ Name: __________________________________________│
 │ Email: __________________________________________│
 │ Phone: __________________________________________│
 │ │
 └──────────────────────────────────────────────────┘
 ```
 
-### Lazy-Loaded Tabs
-
-Load tab content only when clicked (performance optimization):
+### A tab carries no options of its own
 
-```yaml
-tabs:
- - name: details
- label: Details
- lazy: false # Load immediately
-
- - name: history
- label: History (1,234 records)
- lazy: true # Load when tab clicked
- source: /api/customers/123/history
-```
+The tab *is* the section, so a section's keys are the whole surface: `name`,
+`label`, `description`, `fields`, `columns`, `collapsible`, `collapsed`,
+`visibleWhen` — plus `pane`, which split forms alone accept. There is **no**
+per-tab `lazy`, `source`, `badge` or `badgeVariant` key, and no
+`layout: { mode: tabbed, ... }` wrapper: `FormViewSchema.layout` is a string
+enum (`vertical` / `horizontal` / `inline` / `grid`) and the form schema
+declares no `tabs` key at all. `FormViewSchema` and `FormSectionSchema`
+(`packages/spec/src/ui/view.zod.ts`) are `.strict()`, so authoring any of them
+is a **parse failure** — a loud rejection, not a silent no-op.
 
-### Tab Badges and Counters
+<Callout type="info">
+ Earlier revisions of this page documented tab-level `lazy` / `source` and tab
+ `badge` / `badgeVariant` (both the scalar `badge: 5` + `badgeVariant: danger`
+ form and the object `badge: { count, variant }` form), nested under a
+ `layout: { mode: tabbed, tabs: [...] }` wrapper. None of them existed on any
+ schema — `lazy` is authorable **nowhere** in the spec — so they are **removed
+ rather than implemented**; deferred tab loading is an implementation card
+ first. Counter-badges are real, but on app **navigation** items (`badge` /
+ `badgeVariant` on `ui/ObjectNavItem` and its siblings), never on a form tab.
+ For the keys a section really accepts, see the
+ [View Reference](/docs/references/ui/view).
+</Callout>
 
-```yaml
-tabs:
- - name: details
- label: Details
-
- - name: tasks
- label: Tasks
- badge: 5 # Show "5" badge
- badgeVariant: danger # Red badge
-
- - name: notes
- label: Notes
- badge: { count: 12, variant: info }
-```
+Looking for tabs that carry their own `name`, `icon`, `filter`, `order`,
+`pinned` and `isDefault`? That surface exists, but it belongs to **list** views,
+not forms: `ui/ViewTab` declares exactly nine keys (`filter`, `icon`,
+`isDefault`, `label`, `name`, `order`, `pinned`, `view`, `visible`), and each
+tab points at a named list view. See
+[View Reference → ViewTab](/docs/references/ui/view#viewtab).
 
 ## Responsive Layout Modifiers