Add KiCad API v2, orderdetail export control, EDA status indicator, BOM improvements

- Add KiCad API v2 endpoints (/kicad-api/v2) with volatile field support
  for stock and storage location (shown but not saved to schematic)
- Add kicad_export flag to Orderdetail entity for per-supplier SPN control
  (backward compatible: if no flag set, all SPNs exported as before)
- Add EDA completeness indicator column in parts datatable (bolt icon)
- Add ?minimal=true query param for faster category parts loading
- Improve category descriptions (use comment instead of URL when available)
- Improve BOM importer multi-footprint support: merge entries by Part-DB
  part ID when linked, tracking footprint variants in comments
- Fix KiCost manf/manf# fields always present (not conditional on orderdetails)
- Fix duplicate getEdaInfo() call in shouldPartBeVisible
- Consolidate supplier SPN and KiCost field generation into single loop

migrations/Version20260210120000.php

@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use App\Migration\AbstractMultiPlatformMigration;
+use Doctrine\DBAL\Schema\Schema;
+
+final class Version20260210120000 extends AbstractMultiPlatformMigration
+{
+    public function getDescription(): string
+    {
+        return 'Add kicad_export boolean column to orderdetails table';
+    }
+
+    public function mySQLUp(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE `orderdetails` ADD kicad_export TINYINT(1) NOT NULL DEFAULT 0');
+    }
+
+    public function mySQLDown(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE `orderdetails` DROP COLUMN kicad_export');
+    }
+
+    public function sqLiteUp(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE orderdetails ADD COLUMN kicad_export BOOLEAN NOT NULL DEFAULT 0');
+    }
+
+    public function sqLiteDown(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE orderdetails DROP COLUMN kicad_export');
+    }
+
+    public function postgreSQLUp(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE orderdetails ADD kicad_export BOOLEAN NOT NULL DEFAULT FALSE');
+    }
+
+    public function postgreSQLDown(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE orderdetails DROP COLUMN kicad_export');
+    }
+}