feat: Complete Shiplogic integration with mobile-optimized ops workflow

**Shiplogic API Integration:**
- Fixed API base URL configuration (removed /api suffix)
- Implemented comprehensive request/response logging for rates and shipments endpoints
- Fixed PDF fetching: API returns S3 URLs, now downloads actual PDFs from S3
- Added tests and mock API responses for local development (routes/shiplogic-mock.php)

**Courier Service Enhancements:**
- Added redownloadShipmentPdfs() public method for re-downloading corrupted PDFs
- Enhanced error logging with full request/response bodies for debugging
- Proper binary PDF storage using Laravel Storage facade
- URL and S3 download handling for Shiplogic API responses

**Workflow & Operations:**
- Changed to manual "Ready for Collection" button instead of automatic move
- Operators now: scan QR → apply labels → click "Ready for Collection" → moves to Awaiting Collection
- Removed duplicate PDF attachments to Trello (was adding twice from two listeners)
- Fixed NotifySlackOnShipmentCreated to only handle Slack notifications

**Mobile-Optimized Ops Page:**
- Removed QR code display from order detail page
- Implemented responsive single-column layout for mobile phones
- Large touch-friendly buttons (full width, increased padding)
- Bold typography for better readability on small screens
- Larger input fields and tracking number displays
- Clear step-by-step instructions for warehouse operators
- Re-download PDF button for damaged/corrupted labels

**New Features:**
- POST /ops/orders/{uuid}/ready-for-collection endpoint
- Re-download PDFs functionality accessible from awaiting_collection and in_transit states
- Full audit logging for all operations via ops interface
- Proper error handling and user feedback

**Testing:**
- Added ShipmentCreationTest with mock HTTP client
- Created comprehensive testing guide (SHIPLOGIC_TESTING.md)
- Mock API routes for local development without hitting live API

tests/Feature/ShipmentCreationTest.php

@@ -0,0 +1,84 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Order;
+use App\Testing\ShiplogicMockClient;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class ShipmentCreationTest extends TestCase
+{
+    use RefreshDatabase;
+
+    /**
+     * Test that shipment can be created with mocked Shiplogic API
+     */
+    public function test_shipment_creation_with_mock_api(): void
+    {
+        // Setup mock HTTP responses
+        ShiplogicMockClient::setup();
+
+        // Create a test order with required fields
+        $order = Order::factory()->create([
+            'order_number' => 'TEST-001',
+            'customer_name' => 'John Doe',
+            'customer_email' => 'john@example.com',
+            'customer_phone' => '+1234567890',
+            'delivery_street' => '123 Main Street',
+            'delivery_unit' => 'Apt 5B',
+            'delivery_city' => 'New York',
+            'delivery_zone' => 'NY',
+            'delivery_code' => '10001',
+            'delivery_country' => 'US',
+            'packing_length' => 30,
+            'packing_width' => 20,
+            'packing_height' => 10,
+            'packing_weight' => 2.5,
+            'status' => 'ready_to_ship',
+        ]);
+
+        // Dispatch the ReadyToShipIntent event to trigger shipment creation
+        // This would normally be triggered by user action in Filament
+        event(new \App\Events\ReadyToShipIntent($order));
+
+        // Verify the order now has shipment metadata
+        $order->refresh();
+        $this->assertNotNull($order->courier_shipment_id);
+        $this->assertNotNull($order->courier_service_level_code);
+        $this->assertNotNull($order->courier_rate);
+
+        // Verify PDFs were stored
+        $this->assertTrue(\Illuminate\Support\Facades\Storage::exists(
+            "public/shipments/{$order->uuid}/Shipment Label.pdf"
+        ));
+        $this->assertTrue(\Illuminate\Support\Facades\Storage::exists(
+            "public/shipments/{$order->uuid}/Shipment Sticker.pdf"
+        ));
+    }
+
+    /**
+     * Test that ECO service level is selected when available
+     */
+    public function test_eco_service_level_selection(): void
+    {
+        ShiplogicMockClient::setup();
+
+        $order = Order::factory()->create([
+            'order_number' => 'TEST-002',
+            'customer_name' => 'Jane Smith',
+            'customer_email' => 'jane@example.com',
+            'delivery_street' => '456 Oak Ave',
+            'delivery_city' => 'London',
+            'delivery_country' => 'GB',
+            'packing_weight' => 1.5,
+            'status' => 'ready_to_ship',
+        ]);
+
+        event(new \App\Events\ReadyToShipIntent($order));
+
+        $order->refresh();
+        // ECO variant should be selected (FEDEX_INTERNATIONAL_ECONOMY)
+        $this->assertStringContainsString('ECONOMY', $order->courier_service_level_code);
+    }
+}