remove(react): #2545 drop unused FormRenderer/FieldFactory duplicate form path (#2560)

Phase 4 of #2545. FormRenderer (and its captive FieldFactory) was an
exported-but-dead second form render path with zero runtime consumers — the
only import in the whole repo was its own test file. It duplicated
plugin-form's ObjectForm (the path every app actually uses via the component
registry) as a degraded variant: raw-HTML/Tailwind instead of shared UI
primitives, a hard-coded Submit button, no submitBehavior/aria/groups support.

- delete packages/react/src/components/form/ entirely (FormRenderer,
  FieldFactory, their test, README, index) and the now-empty re-export
  `export * from './components/form'` in packages/react/src/index.ts
- remove the public exports FormRenderer/FormRendererProps/FieldFactory/
  FieldFactoryProps/ExtendedFormField from @object-ui/react (changeset: minor)
- docs: delete content/docs/core/form-renderer.mdx, drop it from core meta.json
  nav, repoint the schema-renderer and enhanced-actions cross-links (the latter
  to the live /docs/components/form page), delete the stale example
  packages/types/examples/form-renderer-example.ts
- fix stale guidance that listed FormRenderer as an app-shell export
  (app-shell never exported it): app-shell/README.md, three skills guides; the
  plugin-development guide's registration example now shows the real
  ObjectFormRenderer symbol

Verified: pnpm react build clean; vitest react 23 files / 295 tests pass; no
FormRenderer/FieldFactory/ExtendedFormField references remain outside CHANGELOGs.

Refs #2545.


Claude-Session: https://claude.ai/code/session_01Ln4gqtxXuymoQmyy4iRM2z

Co-authored-by: Claude <noreply@anthropic.com>

Author: os-zhuang

.changeset/remove-formrenderer-2545.md

@@ -0,0 +1,20 @@
+---
+"@object-ui/react": minor
+---
+
+remove(react): drop the unused `FormRenderer` / `FieldFactory` duplicate render path (#2545)
+
+`FormRenderer` (and its captive `FieldFactory`) was an exported-but-dead second
+form render path: zero runtime consumers anywhere in the repo — the only import
+was its own test file. It duplicated `@object-ui/plugin-form`'s `ObjectForm`
+(the path every app actually uses via the component registry) but had drifted
+into a degraded variant: raw-HTML/Tailwind instead of the shared UI primitives,
+a hard-coded Submit button, and no support for `submitBehavior` / `aria` /
+`groups`.
+
+**Breaking (ships as minor per the pre-1.0 launch-window convention):** the
+public exports `FormRenderer`, `FormRendererProps`, `FieldFactory`,
+`FieldFactoryProps`, and `ExtendedFormField` are removed from
+`@object-ui/react`. Render forms through the `object-form` schema node
+(`@object-ui/plugin-form` `ObjectForm`, reachable from a `FormViewSchema` via
+`SchemaRenderer` / the spec bridge) instead. Closes Phase 4 of #2545.

content/docs/core/enhanced-actions.mdx

@@ -443,5 +443,5 @@ Enhanced Actions are ideal for:
 ## Related
 
 - [Building a CRUD App](/docs/guide/building-crud-app) - CRUD operations with actions
-- [Form Schema](/docs/core/form-renderer) - Form submission actions
+- [Form](/docs/components/form) - Form submission actions
 - [Data Source](/docs/guide/data-source) - API integration

content/docs/core/form-renderer.mdx

@@ -2,7 +2,6 @@
   "title": "Core",
   "pages": [
     "schema-renderer",
-    "form-renderer",
     "app-schema",
     "theme-schema",
     "enhanced-actions",

content/docs/core/meta.json

@@ -162,4 +162,3 @@ Null or undefined schemas render nothing:
 
 - [Component Registry](/docs/guide/component-registry) - Register custom components
 - [Schema Rendering Guide](/docs/guide/schema-rendering) - Deep dive into schema rendering
-- [FormRenderer](/docs/core/form-renderer) - Specialized renderer for forms

content/docs/core/schema-renderer.mdx

@@ -52,22 +52,6 @@ function MyDashboard() {
 }
 ```
 
-### With Custom Form
-
-```tsx
-import { FormRenderer } from '@object-ui/app-shell';
-
-function MyForm() {
-  return (
-    <FormRenderer
-      schema={formSchema}
-      dataSource={myDataSource}
-      onSuccess={() => console.log('Saved!')}
-    />
-  );
-}
-```
-
 ## Key Features
 
 - **Zero Dependencies on Console**: No routing, no auth, no app management
@@ -130,21 +114,6 @@ Renders custom page schemas.
 />
 ```
 
-### FormRenderer
-
-Renders forms (modal or inline).
-
-```tsx
-<FormRenderer
-  schema={formSchema}
-  dataSource={dataSource}
-  mode="create" // or "edit"
-  recordId={recordId}
-  onSuccess={handleSuccess}
-  onCancel={handleCancel}
-/>
-```
-
 ## Metadata designers
 
 The metadata-admin engine (`src/views/metadata-admin`) renders an in-app editor