feat(editorial): preserve public portfolio fiches during private review

database/migrations/2026_11_13_230000_extend_editorial_editions_to_portfolio.php

@@ -0,0 +1,37 @@
+<?php
+
+use App\Support\IsolatedQaDatabase;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        if (! IsolatedQaDatabase::allowsSchemaChanges()) {
+            throw new RuntimeException('Only isolated QA is authorised.');
+        }
+        Schema::table('portal_editorial_editions', function (Blueprint $t): void {
+            $t->unsignedBigInteger('resource_id')->nullable()->change();
+            $t->foreignUuid('dossier_id')->nullable()->constrained('investment_dossiers')->restrictOnDelete();
+            $t->unique(['dossier_id', 'revision_no']);
+        });
+        DB::statement('ALTER TABLE portal_editorial_editions ADD CONSTRAINT portal_editorial_edition_subject CHECK (num_nonnulls(resource_id,dossier_id)=1)');
+    }
+
+    public function down(): void
+    {
+        if (! IsolatedQaDatabase::allowsSchemaChanges() || DB::table('portal_editorial_editions')->whereNotNull('dossier_id')->exists()) {
+            throw new RuntimeException('Preserve portfolio editorial history.');
+        }
+        DB::statement('ALTER TABLE portal_editorial_editions DROP CONSTRAINT portal_editorial_edition_subject');
+        Schema::table('portal_editorial_editions', function (Blueprint $t): void {
+            $t->dropUnique(['dossier_id', 'revision_no']);
+            $t->dropForeign(['dossier_id']);
+            $t->dropColumn('dossier_id');
+            $t->unsignedBigInteger('resource_id')->nullable(false)->change();
+        });
+    }
+};