feat(team-member): Complete Team Member Management capability

Implement full CRUD operations for team members with TDD approach:

Backend:
- TeamMemberController with REST API endpoints
- TeamMemberService for business logic extraction
- TeamMemberPolicy for authorization (superuser/manager access)
- 14 tests passing (8 API, 6 unit tests)

Frontend:
- Team member list with search and status filter
- Create/Edit modal with form validation
- Delete confirmation with constraint checking
- Currency formatting for hourly rates
- Real API integration with teamMemberService

Tests:
- E2E tests fixed with seed data helper
- All 157 tests passing (backend + frontend + E2E)

Closes #22

backend/config/boost.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | Boost Master Switch
+    |--------------------------------------------------------------------------
+    |
+    | This option may be used to disable all Boost functionality - which
+    | will prevent Boost's routes from being registered and will also
+    | disable Boost's browser logging functionality from operating.
+    |
+    */
+
+    'enabled' => env('BOOST_ENABLED', true),
+
+    /*
+    |--------------------------------------------------------------------------
+    | Boost Browser Logs Watcher
+    |--------------------------------------------------------------------------
+    |
+    | The following option may be used to enable or disable the browser logs
+    | watcher feature within Laravel Boost. The log watcher will read any
+    | errors within the browser's console to give Boost better context.
+    |
+    */
+
+    'browser_logs_watcher' => env('BOOST_BROWSER_LOGS_WATCHER', true),
+
+    /*
+    |--------------------------------------------------------------------------
+    | Boost Executables Paths
+    |--------------------------------------------------------------------------
+    |
+    | These options allow you to specify custom paths for the executables that
+    | Boost uses. When configured, they take precedence over the automatic
+    | discovery mechanism. Leave empty to use defaults from your $PATH.
+    |
+    */
+
+    'executable_paths' => [
+        'php' => env('BOOST_PHP_EXECUTABLE_PATH'),
+        'composer' => env('BOOST_COMPOSER_EXECUTABLE_PATH'),
+        'npm' => env('BOOST_NPM_EXECUTABLE_PATH'),
+        'vendor_bin' => env('BOOST_VENDOR_BIN_EXECUTABLE_PATH'),
+    ],
+
+];