feat(05-02): create job application form in Formidable class

Add create_job_application_form() method with 4 fields:
- applicant_name (text, required)
- applicant_email (email, required, pre-filled for logged-in users)
- applicant_message (textarea, required)
- job_id (hidden)

Form title: "Jetzt bewerben"
Submit button: "Bewerbung absenden"
Success message: "Ihre Bewerbung wurde versendet. Der Anbieter wird sich bei Ihnen melden."

Added get_job_application_form_id() helper method
Registered form creation in setup_registration_hooks()

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

includes/class-formidable.php

@@ -41,6 +41,13 @@ class DDHH_JM_Formidable {
 	 */
 	private static $job_deactivation_form_id = null;
 
+	/**
+	 * Form ID for job application
+	 *
+	 * @var int|null
+	 */
+	private static $job_application_form_id = null;
+
 	/**
 	 * Get the registration form ID
 	 *
@@ -121,6 +128,26 @@ class DDHH_JM_Formidable {
 		return null;
 	}
 
+	/**
+	 * Get the job application form ID
+	 *
+	 * @return int|null Form ID or null if not found
+	 */
+	public static function get_job_application_form_id() {
+		if ( null !== self::$job_application_form_id ) {
+			return self::$job_application_form_id;
+		}
+
+		// Look up form by key
+		$form = FrmForm::getOne( 'job_application' );
+		if ( $form ) {
+			self::$job_application_form_id = $form->id;
+			return self::$job_application_form_id;
+		}
+
+		return null;
+	}
+
 	/**
 	 * Setup registration hooks
 	 */
@@ -130,6 +157,7 @@ class DDHH_JM_Formidable {
 		add_action( 'init', array( __CLASS__, 'create_job_submission_form' ), 11 );
 		add_action( 'init', array( __CLASS__, 'create_job_edit_form' ), 11 );
 		add_action( 'init', array( __CLASS__, 'create_job_deactivation_form' ), 11 );
+		add_action( 'init', array( __CLASS__, 'create_job_application_form' ), 11 );
 
 		// Hook into Formidable form submission
 		add_action( 'frm_after_create_entry', array( __CLASS__, 'handle_registration_submission' ), 30, 2 );
@@ -826,4 +854,90 @@ class DDHH_JM_Formidable {
 
 		return $errors;
 	}
+
+	/**
+	 * Create the job application form programmatically if it doesn't exist
+	 */
+	public static function create_job_application_form() {
+		// Check if Formidable is active
+		if ( ! class_exists( 'FrmForm' ) ) {
+			return;
+		}
+
+		// Check if form already exists
+		$existing_form = FrmForm::getOne( 'job_application' );
+		if ( $existing_form ) {
+			self::$job_application_form_id = $existing_form->id;
+			return;
+		}
+
+		// Create form
+		$form_values = array(
+			'name'        => 'Jetzt bewerben',
+			'form_key'    => 'job_application',
+			'description' => '',
+			'status'      => 'published',
+			'options'     => array(
+				'submit_value' => 'Bewerbung absenden',
+				'success_msg'  => 'Ihre Bewerbung wurde versendet. Der Anbieter wird sich bei Ihnen melden.',
+			),
+		);
+
+		$form_id = FrmForm::create( $form_values );
+
+		if ( ! $form_id ) {
+			return;
+		}
+
+		self::$job_application_form_id = $form_id;
+
+		// Get current user email if logged in
+		$current_user = wp_get_current_user();
+		$default_email = '';
+		if ( $current_user && $current_user->ID ) {
+			$default_email = $current_user->user_email;
+		}
+
+		// Create form fields
+		$fields_data = array(
+			array(
+				'name'        => 'Name',
+				'field_key'   => 'applicant_name',
+				'type'        => 'text',
+				'required'    => '1',
+				'form_id'     => $form_id,
+				'field_order' => 1,
+			),
+			array(
+				'name'          => 'E-Mail',
+				'field_key'     => 'applicant_email',
+				'type'          => 'email',
+				'required'      => '1',
+				'form_id'       => $form_id,
+				'field_order'   => 2,
+				'default_value' => $default_email,
+			),
+			array(
+				'name'        => 'Nachricht',
+				'description' => 'Warum interessieren Sie sich für diese Stelle?',
+				'field_key'   => 'applicant_message',
+				'type'        => 'textarea',
+				'required'    => '1',
+				'form_id'     => $form_id,
+				'field_order' => 3,
+			),
+			array(
+				'name'        => 'Job ID',
+				'field_key'   => 'job_id',
+				'type'        => 'hidden',
+				'required'    => '0',
+				'form_id'     => $form_id,
+				'field_order' => 4,
+			),
+		);
+
+		foreach ( $fields_data as $field ) {
+			FrmField::create( $field );
+		}
+	}
 }