@@ -0,0 +1,7 @@
+---
+'@object-ui/core': minor
+---
+
+feat(core): the `flex()` builder emits its props in the `properties` bag (objectui#11276)
+
+**BREAKING (output shape):** `flex()` now builds `{ type: 'flex', properties: { direction, justify, align, gap, children } }` instead of writing those keys on the node. That is the spelling `@object-ui/types`' authoring faces accept for an authored `flex` node, which now refuse the flat keys by name (objectui#11276, the maintainer's ruling A on objectui#11300); without this change, `objectui validate` would refuse what the builder builds. The base setters (`id`, `className`, `visible`, `disabled`, `testId`, `visibleOn`) still write on the node. Code that reads a built node's props reads them from `properties` (`flex().direction('col').build().properties.direction`); `build()` is typed `BaseSchema & { type: 'flex'; properties: FlexLayoutProps }`. Rendering is unchanged: `SchemaRenderer` hoists the bag onto the node before the `flex` renderer reads it.
@@ -0,0 +1,28 @@
+---
+'@object-ui/types': minor
+---
+
+feat(types): an authored `flex` takes its props in the spec's `properties` bag; the flat spelling is refused by name (objectui#11276)
+
+**BREAKING (authoring):** a `flex` node that writes `direction`, `justify`, `align`, `gap`, `wrap` or its child list `children` on the node itself is now refused by `safeValidateSchema`, `validateSchema` and the strict authoring face, and so by `objectui validate`. Move each of them, the child list included, into the node's `properties` bag:
+
+```json
+{ "type": "flex", "className": "p-4", "properties": { "direction": "col", "gap": 4, "children": [{ "type": "text", "content": "First" }] } }
+```
+
+`id`, `className`, `style`, `visible` and the other base props, and the node-level `responsiveStyles`, stay on the node. Nothing changes at render time: `SchemaRenderer` hoists every `properties` key onto the node before the `flex` renderer runs, so the bag node draws what the flat one drew, and a stored flat node, or a node built in code, keeps rendering with its flat keys. In TypeScript, `FlexLayoutProps` is the bag's type: check an authored bag with `satisfies FlexLayoutProps`.
+
+**Clause-②: yes** — the accept set narrows (a flat `flex` node that parsed is refused) and widens (a spec-shaped bag node that the strict face refused parses). Released as `minor` under the objectui narrowing rule, with this banner.
+
+**Why.** `@objectstack/spec`'s strict `PageComponentSchema` refuses a prop written on a page component itself as mis-layered (ADR-0089 D3a), for every component type, and the maintainer ruled A on objectui#11300: the `properties` bag is the contract on `flex` too. The arm here was the flat mirror of the TypeScript `FlexSchema`, so the two validators disagreed both ways: the strict face refused the objectstack showcase's layout boxes, written in the bag, and both faces accepted the flat node `os validate` refuses. objectui#6751's guidance that `flex` declares its keys on the node is withdrawn for `flex` only; `stack` and every other layout arm keep their props on the node.
+
+**What changed, in observable terms.**
+
+- `@object-ui/types/zod` exports `FlexBlockSchema`, built the way `ObjectChartBlockSchema` is: `BaseSchema`, the `flex` literal, the node-level `responsiveStyles`, and `properties`. `@objectstack/spec` has no `ComponentPropsMap['flex']` row, so the bag's `direction`, `justify`, `align`, `gap` and `wrap` are the flat `FlexSchema` mirror's own members: their values are judged exactly as before, now in the bag. A key `flex` does not declare stays unjudged in the bag by the tolerant face and is refused there by the strict face, as it was on the node.
+- The child list is `properties.children`: one node or a list. Each component in the list is judged once, at its own path (`properties.children.0…`), by the same page walk that judges a `page:` container's child list.
+- Each of the six props written flat on the node is refused on both faces, with a message that names its bag member (`Did you mean \`gap\` → \`properties.gap\`?`). `body` is refused toward `properties.children`.
+- `FlexBlockSchema` is the `flex` arm of `AnyComponentSchema`. `FlexSchema` leaves the union.
+
+**The same release's changesets** that describe what the validators say about a `flex` written flat — `.changeset/10872-flat-arm-responsive-styles.md` (its example node writes `direction` flat), `.changeset/6751-flex-props-envelope-lift.md` (the keys lifted onto the node), `.changeset/8284-content-channel-per-component.md` (`body` refused toward `children`) and the remedy example in `.changeset/7926-page-node-refuses-actions.md` — describe the flat mirror, which still behaves as they say. On an authored node the props now live in the bag: `responsiveStyles` stays on the node as `.changeset/10872-flat-arm-responsive-styles.md` says, and its value checks hold there; the other props, the child list included, move into `properties`.
+
+**What did not move.** The TypeScript `FlexSchema` and its zod mirror `FlexSchema` stay published and unchanged in shape. They are the node as the `flex` renderer reads it after the hoist, and as code composes it.
@@ -9,17 +9,46 @@ description: "Flexible box layout container"
 
 ## Schema
 
+A `flex` node takes its props — the child list included — in its `properties` bag, the
+spelling `@objectstack/spec`'s page component declares. `objectui validate` refuses a `flex`
+prop written on the node itself, by name, and points at its bag member
+(`properties.direction`, `properties.children`, …). `className` and the other base props stay
+on the node.
+
+```json
+{
+  "type": "flex",
+  "className": "p-4",
+  "properties": {
+    "direction": "col",
+    "gap": 4,
+    "children": [
+      { "type": "text", "content": "First" },
+      { "type": "text", "content": "Second" }
+    ]
+  }
+}
+```
+
+The bag's members are `FlexLayoutProps` from `@object-ui/types`:
+
 ```ts
 import type { SchemaNode } from '@object-ui/types';
 
-interface FlexSchema {
+interface FlexNode {
   type: 'flex';
-  direction?: 'row' | 'col' | 'row-reverse' | 'col-reverse';
-  gap?: number;
-  align?: 'start' | 'center' | 'end';
-  justify?: 'start' | 'center' | 'end' | 'between';
-  wrap?: boolean;
-  children: SchemaNode[];
   className?: string;
+  properties?: {
+    direction?: 'row' | 'col' | 'row-reverse' | 'col-reverse';
+    gap?: number;
+    align?: 'start' | 'end' | 'center' | 'baseline' | 'stretch';
+    justify?: 'start' | 'end' | 'center' | 'between' | 'around' | 'evenly';
+    wrap?: boolean;
+    children?: SchemaNode[];
+  };
 }
 ```
+
+Nothing changes at render time: `SchemaRenderer` hoists every `properties` key onto the node
+before the `flex` renderer reads it, so a stored node that still writes these props flat keeps
+rendering.
@@ -154,22 +154,24 @@ A `page` node has no action row of its own. Buttons are NODES, and they go in `c
   "children": [
     {
       "type": "flex",
-      "justify": "end",
-      "gap": 2,
-      "children": [
-        {
-          "type": "button",
-          "label": "Add Product",
-          "variant": "default",
-          "icon": "plus"
-        },
-        {
-          "type": "button",
-          "label": "Export",
-          "variant": "outline",
-          "icon": "download"
-        }
-      ]
+      "properties": {
+        "justify": "end",
+        "gap": 2,
+        "children": [
+          {
+            "type": "button",
+            "label": "Add Product",
+            "variant": "default",
+            "icon": "plus"
+          },
+          {
+            "type": "button",
+            "label": "Export",
+            "variant": "outline",
+            "icon": "download"
+          }
+        ]
+      }
     },
     {
       "type": "object-grid",
@@ -541,30 +543,32 @@ Same rule as above, and it governs the trail too: the breadcrumb and the buttons
     },
     {
       "type": "flex",
-      "justify": "end",
-      "gap": 2,
-      "children": [
-        {
-          "type": "action:button",
-          "properties": {
-            "name": "edit_record",
-            "label": "Edit",
-            "variant": "default",
-            "icon": "pencil",
-            "actionType": "editRecord"
+      "properties": {
+        "justify": "end",
+        "gap": 2,
+        "children": [
+          {
+            "type": "action:button",
+            "properties": {
+              "name": "edit_record",
+              "label": "Edit",
+              "variant": "default",
+              "icon": "pencil",
+              "actionType": "editRecord"
+            }
+          },
+          {
+            "type": "action:button",
+            "properties": {
+              "name": "delete_record",
+              "label": "Delete",
+              "variant": "destructive",
+              "icon": "trash",
+              "actionType": "deleteRecord"
+            }
           }
-        },
-        {
-          "type": "action:button",
-          "properties": {
-            "name": "delete_record",
-            "label": "Delete",
-            "variant": "destructive",
-            "icon": "trash",
-            "actionType": "deleteRecord"
-          }
-        }
-      ]
+        ]
+      }
     },
     {
       "type": "card",
@@ -726,11 +730,13 @@ Place primary actions in the first `children` node, so they sit above the conten
   "children": [
     {
       "type": "flex",
-      "justify": "end",
-      "gap": 2,
-      "children": [
-        { "type": "button", "label": "New Order", "variant": "default" }
-      ]
+      "properties": {
+        "justify": "end",
+        "gap": 2,
+        "children": [
+          { "type": "button", "label": "New Order", "variant": "default" }
+        ]
+      }
     }
   ]
 }
 
@@ -4,33 +4,35 @@
   "children": [
     {
       "type": "flex",
-      "gap": 2,
-      "wrap": true,
-      "children": [
-        {
-          "type": "button",
-          "label": "Submit",
-          "variant": "default",
-          "icon": "send"
-        },
-        {
-          "type": "button",
-          "label": "Save Draft",
-          "variant": "outline",
-          "icon": "save"
-        },
-        {
-          "type": "button",
-          "label": "Delete",
-          "variant": "destructive",
-          "icon": "trash"
-        },
-        {
-          "type": "button",
-          "label": "Cancel",
-          "variant": "ghost"
-        }
-      ]
+      "properties": {
+        "gap": 2,
+        "wrap": true,
+        "children": [
+          {
+            "type": "button",
+            "label": "Submit",
+            "variant": "default",
+            "icon": "send"
+          },
+          {
+            "type": "button",
+            "label": "Save Draft",
+            "variant": "outline",
+            "icon": "save"
+          },
+          {
+            "type": "button",
+            "label": "Delete",
+            "variant": "destructive",
+            "icon": "trash"
+          },
+          {
+            "type": "button",
+            "label": "Cancel",
+            "variant": "ghost"
+          }
+        ]
+      }
     }
   ]
 }