retire(components): remove the second ActionParamDialog export; app-shell's is the surviving implementation (#5685)

.changeset/retire-components-action-param-dialog-5685.md

@@ -0,0 +1,39 @@
+---
+'@object-ui/components': minor
+---
+
+Retire `ActionParamDialog`: the `custom` barrel's second action-param dialog is
+removed, and the app-shell dialog is recorded as the surviving implementation
+(objectui#5685, maintainer ruling of 2026-08-22).
+
+**Breaking for any out-of-repo host that imported it** (declared `minor` per the
+repo's version-alignment rule — the major tracks `@objectstack`, never an
+API-break count): `@object-ui/components` no longer exports `ActionParamDialog`
+or `ActionParamDialogProps`. Measured at the branch point, the export had zero
+production consumers — its only in-repo importers were its own five test files,
+which retire with it, and no other repository in the organization imports the
+symbol from this package.
+
+This file was the repo's SECOND implementation of the action-param surface, and
+its audit trail is the reason it retires instead of being maintained: the last
+close look (objectui#4758) found per-option `visibleWhen` not evaluated at all,
+and the five hardcoded English strings this card originally recorded were the
+next drift installment. A dormant second dialect of a governed surface is one
+production import away from being live; removing it removes the whole drift
+class.
+
+FROM → TO for an out-of-repo host:
+
+- `import { ActionParamDialog } from '@object-ui/components'` — no drop-in
+  replacement is published. The surviving implementation is
+  `@object-ui/app-shell`'s `ActionParamDialog` (`src/views/ActionParamDialog.tsx`),
+  rendered by app-shell's action runtime (`useConsoleActionRuntime`,
+  `RecordDetailView`) rather than exported standalone. A host that needs its own
+  param form builds on `@object-ui/fields`' shared field widgets
+  (`resolveFormWidgetType` / `getLazyFieldWidget`, ADR-0059) — the same seam the
+  surviving dialog renders through.
+
+The unreleased objectui#4758 changeset for this component (`select` options
+through the shared option evaluator) is withdrawn in the same change: the
+component retires before that fix ever ships, so the release notes carry the
+removal rather than new behaviour of a surface this release does not contain.