feat(backend): enhance allocation and project management

Update controllers and services for allocation fidelity:
- AllocationController: variance data in responses, bulk operations
- ProjectController: include plan data in responses
- ProjectMonthPlanController: planning grid API
- AllocationMatrixService: support untracked allocations
- ProjectResource/TeamMemberResource: include reconciliation data

Improved test coverage for allocation flows.

backend/tests/Unit/AllocationCacheInvalidationTest.php

@@ -7,6 +7,7 @@ use App\Models\Project;
 use App\Models\Role;
 use App\Models\TeamMember;
 use App\Services\AllocationMatrixService;
+use App\Services\VarianceCalculator;
 use Illuminate\Foundation\Testing\RefreshDatabase;
 use Tests\TestCase;
 
@@ -24,11 +25,11 @@ class AllocationCacheInvalidationTest extends TestCase
         Allocation::factory()->create([
             'project_id' => $project->id,
             'team_member_id' => $teamMember->id,
-            'month' => '2026-02',
+            'month' => '2026-02-01',
             'allocated_hours' => 40,
         ]);
 
-        $matrixService = new AllocationMatrixService;
+        $matrixService = new AllocationMatrixService(new VarianceCalculator);
         $result = $matrixService->getMatrix('2026-02');
 
         $this->assertArrayHasKey('allocations', $result);

backend/tests/Unit/Resources/ProjectResourceTest.php

@@ -21,6 +21,19 @@ test('project resource includes expected fields inside data wrapper', function (
     expect($payload['data'])->toHaveKey('approved_estimate');
 });
 
+test('project resource includes scalar type_id and status_id', function () {
+    $project = Project::factory()->approved()->create();
+    $project->load(['status', 'type']);
+
+    $response = (new ProjectResource($project))->toResponse(Request::create('/'));
+    $payload = $response->getData(true);
+
+    expect($payload['data'])->toHaveKey('type_id');
+    expect($payload['data'])->toHaveKey('status_id');
+    expect($payload['data']['type_id'])->toBe($project->type_id);
+    expect($payload['data']['status_id'])->toBe($project->status_id);
+});
+
 test('project resource collection wraps multiple entries', function () {
     $projects = Project::factory()->count(2)->create();
 

backend/tests/Unit/Resources/TeamMemberResourceTest.php

@@ -21,6 +21,18 @@ test('team member resource wraps data and includes role when loaded', function (
     expect($payload['data']['role']['id'])->toBe($role->id);
 });
 
+test('team member resource includes scalar role_id', function () {
+    $role = Role::factory()->create();
+    $teamMember = TeamMember::factory()->create(['role_id' => $role->id]);
+    $teamMember->load('role');
+
+    $response = (new TeamMemberResource($teamMember))->toResponse(Request::create('/'));
+    $payload = $response->getData(true);
+
+    expect($payload['data'])->toHaveKey('role_id');
+    expect($payload['data']['role_id'])->toBe($teamMember->role_id);
+});
+
 test('team member resource collection keeps data wrapper', function () {
     $role = Role::factory()->create();
     $teamMembers = TeamMember::factory()->count(2)->create(['role_id' => $role->id]);