feat(shared) : add column comments catalog helper for migrations

src/Shared/Infrastructure/Database/ColumnCommentsCatalog.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Shared\Infrastructure\Database;
+
+final class ColumnCommentsCatalog
+{
+    /**
+     * SQL `COMMENT ON COLUMN` statements for the 4 standard Timestampable/Blamable columns.
+     * Call from a migration: foreach (...) { $this->addSql($statement); }.
+     *
+     * @return list<string>
+     */
+    public static function timestampableBlamableComments(string $table): array
+    {
+        return [
+            "COMMENT ON COLUMN {$table}.created_at IS 'Date de creation (UTC). Rempli automatiquement (Timestampable).'",
+            "COMMENT ON COLUMN {$table}.updated_at IS 'Date de derniere modification (UTC). Rempli automatiquement (Timestampable).'",
+            "COMMENT ON COLUMN {$table}.created_by IS 'Auteur de la creation (FK user, SET NULL). Rempli automatiquement (Blamable).'",
+            "COMMENT ON COLUMN {$table}.updated_by IS 'Auteur de la derniere modification (FK user, SET NULL). Rempli automatiquement (Blamable).'",
+        ];
+    }
+}