fix(spp_dci_demo): invalidate membership cache before enrollment and add system parameter

Invalidate household group_membership_ids cache before iterating so the
newly created child membership is included in auto-enrollment.

Add missing spp_dci_demo.default_crvs_data_source system parameter with
an empty default to system_parameters.xml so the parameter is defined on
module install.

Author: jeremi

spp_dci_demo/data/system_parameters.xml

@@ -12,6 +12,16 @@
         <field name="value">True</field>
     </record>
 
+    <!--
+        Default CRVS data source for birth verification.
+        Leave empty to fall back to the first active CRVS data source.
+        To set a specific source, enter its numeric database ID here.
+    -->
+    <record id="param_default_crvs_data_source" model="ir.config_parameter">
+        <field name="key">spp_dci_demo.default_crvs_data_source</field>
+        <field name="value" />
+    </record>
+
     <!--
         Program ID for auto-enrollment is set by post_init_hook
         since programs are created via wizard, not XML data.

spp_dci_demo/models/cr_apply_add_member.py

@@ -135,11 +135,7 @@ def _auto_enroll_in_household_programs(self, individual, household):
             household: The household/group (res.partner)
         """
         # Get program ID from system parameter
-        program_id_str = (
-            self.env["ir.config_parameter"]
-            .sudo()
-            .get_param("spp_dci_demo.enrollment_program_id", "")
-        )
+        program_id_str = self.env["ir.config_parameter"].sudo().get_param("spp_dci_demo.enrollment_program_id", "")
         if not program_id_str:
             _logger.info("No enrollment program configured (spp_dci_demo.enrollment_program_id)")
             return
@@ -171,6 +167,8 @@ def _auto_enroll_in_household_programs(self, individual, household):
         self._enroll_partner_in_program(household, program)
 
         # Enroll all household members including the new child
+        # Invalidate cache so the newly created membership is included
+        household.invalidate_recordset(["group_membership_ids"])
         if hasattr(household, "group_membership_ids"):
             for membership in household.group_membership_ids:
                 if membership.individual:
@@ -184,10 +182,13 @@ def _enroll_partner_in_program(self, partner, program):
             program: The program to enroll in (spp.program)
         """
         # Check if already enrolled
-        existing = self.env["spp.program.membership"].search([
-            ("partner_id", "=", partner.id),
-            ("program_id", "=", program.id),
-        ], limit=1)
+        existing = self.env["spp.program.membership"].search(
+            [
+                ("partner_id", "=", partner.id),
+                ("program_id", "=", program.id),
+            ],
+            limit=1,
+        )
 
         if existing:
             _logger.info(
@@ -200,11 +201,13 @@ def _enroll_partner_in_program(self, partner, program):
 
         # Create enrollment
         try:
-            self.env["spp.program.membership"].create({
-                "partner_id": partner.id,
-                "program_id": program.id,
-                "state": "enrolled",
-            })
+            self.env["spp.program.membership"].create(
+                {
+                    "partner_id": partner.id,
+                    "program_id": program.id,
+                    "state": "enrolled",
+                }
+            )
             _logger.info(
                 "Enrolled partner %s in program %s",
                 partner.id,