fix(ui): an unreadable field rule set judges nothing in the grid's pre-send check

Co-authored-by: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01L9qibxQtKRyLyL6eK14pgY

Author: claude

.changeset/27520-refused-grid-and-form-saves.md

@@ -0,0 +1,14 @@
+---
+'@object-ui/components': patch
+'@object-ui/plugin-grid': patch
+---
+
+fix(ui): a refused inline-grid save marks its cells and says every reason; a refused form save is said once
+
+Clause-②: no
+Metadata-protocol: none
+
+- **Inline grid edit, Save All.** When the server refused a row, the save bar showed one shortened line, with the rest only in a tooltip, and no cell showed which value was wrong. Now every reason is shown in full on its own line under the toolbar, and each cell the refusal names gets a red outline with its reason on hover. Editing a marked cell removes its outline.
+- **Field rules before sending.** The grid's built-in saves now check an edited value against the field's own rules (required, min / max, length, email / URL pattern) before sending, and refuse a row that breaks one in the same way the server would. That row is not sent; the other rows still save.
+- **Save All placement.** The grid toolbar is padded, so the Save All / Cancel All buttons no longer sit against the right edge of the grid.
+- **Refused form save.** When the server refused a form save, such as one blocked by a validation rule on a Studio-authored object, the form showed a banner and an identical error toast. It now shows the banner only, scrolled into view, and a retry still replaces that banner instead of adding another. This reverses the earlier one-error-toast behaviour.

ui/packages/plugin-grid/src/objectGridInlineRules.ts

@@ -77,7 +77,8 @@ export function inlineEditRuleRefusals(
   for (const [field, value] of Object.entries(changes)) {
     const def = fields[field];
     if (!def || typeof def !== 'object') continue;
-    const rules = buildValidationRules(def) as Record<string, unknown>;
+    // A rule set that cannot be read judges nothing: the server stays the judge.
+    const rules = (buildValidationRules(def) ?? {}) as Record<string, unknown>;
     const label = labelOf(field);
     if (isBlank(value)) {
       if (rules.required) {