Replace all uses of `forceFill`, `forceCreate`, and `forceFill` with their
non-force equivalents across models, actions, controllers, and Livewire
components. Add explicit `$fillable` arrays to all affected Eloquent models
to enforce mass assignment protection.
Add ModelFillableCreationTest and ModelFillableRegressionTest to verify that
model creation respects fillable constraints and prevent regressions.
Replace create() with forceCreate() across internal model creation operations to bypass mass assignment protection. This is appropriate for internal code that constructs complete model state without user input.
Add InternalModelCreationMassAssignmentTest to ensure internal model creation behavior is properly tested. Optimize imports by using shortened Livewire attribute references and removing unused imports.
Add support for command-based health checks in addition to HTTP-based checks:
- New health_check_type field supporting 'http' and 'cmd' values
- New health_check_command field with strict regex validation
- Updated allowedFields in create_application and update_by_uuid endpoints
- Validation rules include max 1000 characters and safe character whitelist
- Added feature tests for health check API endpoints
- Added unit tests for GithubAppPolicy and SharedEnvironmentVariablePolicy
