1. Database Migration (backend/alembic/versions/014_add_custom_registration_data.py)- Adds custom_registration_data JSON column to users table for storing dynamic field responses2. User Model (backend/models.py)- Added custom_registration_data = Column(JSON, default=dict, nullable=False) to User model3. New API Endpoints (backend/server.py)- GET /api/registration/schema - Public endpoint returning form schema- GET /api/admin/registration/schema - Admin view with metadata- PUT /api/admin/registration/schema - Update schema- POST /api/admin/registration/schema/validate - Validate schema structure- POST /api/admin/registration/schema/reset - Reset to default- GET /api/admin/registration/field-types - Get available field types4. Validation Functions- validate_dynamic_registration() - Validates form data against schema- split_registration_data() - Splits data between User columns and custom_registration_data- evaluate_conditional_rules() - Evaluates show/hide rules5. Permissions (backend/seed_permissions_rbac.py)- Added registration.view and registration.manage permissions

alembic/versions/014_add_custom_registration_data.py

@@ -0,0 +1,39 @@
+"""add_custom_registration_data
+
+Revision ID: 014_custom_registration
+Revises: a1b2c3d4e5f6
+Create Date: 2026-02-01 10:00:00.000000
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '014_custom_registration'
+down_revision: Union[str, None] = 'a1b2c3d4e5f6'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # Add custom_registration_data column to users table
+    # This stores dynamic registration field responses as JSON
+    op.add_column('users', sa.Column(
+        'custom_registration_data',
+        sa.JSON,
+        nullable=False,
+        server_default='{}'
+    ))
+
+    # Add comment for documentation
+    op.execute("""
+        COMMENT ON COLUMN users.custom_registration_data IS
+        'Dynamic registration field responses stored as JSON for custom form fields';
+    """)
+
+
+def downgrade() -> None:
+    op.drop_column('users', 'custom_registration_data')