feat(catalog,contacts): fresh catalog and contacts implementation

app/Domains/Catalog/Http/Requests/UnitRequest.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace App\Domains\Catalog\Http\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+/**
+ * Incoming payload for creating or renaming a measurement unit.
+ *
+ * Besides the name rule it builds the attribute array to persist, pinned to
+ * the company the request was addressed to rather than to anything submitted.
+ */
+class UnitRequest extends FormRequest
+{
+    /**
+     * Access is settled by the unit policy in the controller.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * A name has to be unused inside the acting company; a different company
+     * may hold the very same one.
+     *
+     * @return array<string, mixed>
+     */
+    public function rules(): array
+    {
+        $free = Rule::unique('units')->where('company_id', $this->header('company'));
+
+        // Quirk kept as is: only PUT excuses the edited row from the name
+        // check. A PATCH would collide with its own stored name.
+        if ($this->isMethod('PUT')) {
+            $free->ignore($this->route('unit'), 'id');
+        }
+
+        return [
+            'name' => ['required', $free],
+        ];
+    }
+
+    /**
+     * The validated attributes with the acting company folded in, ready to be
+     * written to a unit.
+     *
+     * @return array<string, mixed>
+     */
+    public function getUnitPayload()
+    {
+        return array_merge($this->validated(), [
+            'company_id' => $this->header('company'),
+        ]);
+    }
+}