updated the error fix for deployement

addons/tncsc_deployment/data/membership_data.xml

@@ -1,18 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <odoo noupdate="1">
+    <!-- Settings may already exist before installation. Set by key to avoid
+         duplicate-key errors; noupdate preserves later administrator changes. -->
     <!-- Membership settings -->
-    <record id="config_parameter_membership_org_name" model="ir.config_parameter">
-        <field name="key">community_membership.org_name</field>
-        <field name="value">Tamil Nadu Cultural Society of Canada</field>
-    </record>
-    <record id="config_parameter_membership_id_format" model="ir.config_parameter">
-        <field name="key">community_membership.member_id_format</field>
-        <field name="value">TNCSC-{year}-{seq}</field>
-    </record>
-    <record id="config_parameter_membership_renewal_offsets" model="ir.config_parameter">
-        <field name="key">community_membership.renewal_offsets</field>
-        <field name="value">30,14,7</field>
-    </record>
+    <function model="ir.config_parameter" name="set_param"
+              eval="('community_membership.org_name', 'Tamil Nadu Cultural Society of Canada')"/>
+    <function model="ir.config_parameter" name="set_param"
+              eval="('community_membership.member_id_format', 'TNCSC-{year}-{seq}')"/>
+    <function model="ir.config_parameter" name="set_param"
+              eval="('community_membership.renewal_offsets', '30,14,7')"/>
 
     <!-- Membership tiers (CAD) - figures from the implementation plan;
          update via Settings once TNCSC confirms final pricing. -->

addons/tncsc_deployment/data/theme_data.xml

@@ -1,26 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
 <odoo noupdate="1">
+    <!-- Settings may already exist before installation. Set by key to avoid
+         duplicate-key errors; noupdate preserves later administrator changes. -->
     <!-- Colours from the implementation plan. Logo is intentionally left
          unset here - upload the real TNCSC logo via Settings > Theme once
          the asset is available; there is no placeholder image shipped. -->
-    <record id="config_parameter_theme_primary" model="ir.config_parameter">
-        <field name="key">community_theme_base.primary_color</field>
-        <field name="value">#05091E</field>
-    </record>
-    <record id="config_parameter_theme_secondary" model="ir.config_parameter">
-        <field name="key">community_theme_base.secondary_color</field>
-        <field name="value">#F97316</field>
-    </record>
-    <record id="config_parameter_theme_accent" model="ir.config_parameter">
-        <field name="key">community_theme_base.accent_color</field>
-        <field name="value">#0EA5FF</field>
-    </record>
-    <record id="config_parameter_theme_heading_font" model="ir.config_parameter">
-        <field name="key">community_theme_base.heading_font</field>
-        <field name="value">Inter, sans-serif</field>
-    </record>
-    <record id="config_parameter_theme_body_font" model="ir.config_parameter">
-        <field name="key">community_theme_base.body_font</field>
-        <field name="value">Inter, sans-serif</field>
-    </record>
+    <function model="ir.config_parameter" name="set_param"
+              eval="('community_theme_base.primary_color', '#05091E')"/>
+    <function model="ir.config_parameter" name="set_param"
+              eval="('community_theme_base.secondary_color', '#F97316')"/>
+    <function model="ir.config_parameter" name="set_param"
+              eval="('community_theme_base.accent_color', '#0EA5FF')"/>
+    <function model="ir.config_parameter" name="set_param"
+              eval="('community_theme_base.heading_font', 'Inter, sans-serif')"/>
+    <function model="ir.config_parameter" name="set_param"
+              eval="('community_theme_base.body_font', 'Inter, sans-serif')"/>
 </odoo>

addons/tncsc_deployment/tests/__init__.py

@@ -1 +1,2 @@
 from . import test_tncsc_deployment
+from . import test_config_seed

addons/tncsc_deployment/tests/test_config_seed.py

@@ -0,0 +1,61 @@
+from odoo.tests.common import TransactionCase, tagged
+from odoo.tools.convert import convert_file
+
+
+@tagged('post_install', '-at_install')
+class TestConfigSeed(TransactionCase):
+    """Exercise the actual XML loader with settings saved before installation."""
+
+    SEEDS = {
+        'theme_data.xml': {
+            'community_theme_base.primary_color': '#05091E',
+            'community_theme_base.secondary_color': '#F97316',
+            'community_theme_base.accent_color': '#0EA5FF',
+            'community_theme_base.heading_font': 'Inter, sans-serif',
+            'community_theme_base.body_font': 'Inter, sans-serif',
+        },
+        'membership_data.xml': {
+            'community_membership.org_name': 'Tamil Nadu Cultural Society of Canada',
+            'community_membership.member_id_format': 'TNCSC-{year}-{seq}',
+            'community_membership.renewal_offsets': '30,14,7',
+        },
+    }
+
+    def _load(self, filename, mode='init'):
+        convert_file(self.env, 'tncsc_deployment', f'data/{filename}', {}, mode=mode)
+
+    def test_install_reuses_existing_parameters(self):
+        params = self.env['ir.config_parameter'].sudo()
+        for filename, expected in self.SEEDS.items():
+            original_ids = {}
+            for key in expected:
+                params.set_param(key, 'existing custom value')
+                record = params.search([('key', '=', key)])
+                # Reproduce keys created through Settings, without seed XML IDs.
+                self.env['ir.model.data'].search([
+                    ('model', '=', 'ir.config_parameter'), ('res_id', '=', record.id),
+                    ('module', '=', 'tncsc_deployment'),
+                ]).unlink()
+                original_ids[key] = record.id
+            self._load(filename)
+            self._load(filename)
+            for key, value in expected.items():
+                self.assertEqual(params.get_param(key), value)
+                self.assertEqual(params.search([('key', '=', key)]).ids, [original_ids[key]])
+
+    def test_install_creates_missing_parameters(self):
+        params = self.env['ir.config_parameter'].sudo()
+        for filename, expected in self.SEEDS.items():
+            params.search([('key', 'in', list(expected))]).unlink()
+            self._load(filename)
+            for key, value in expected.items():
+                self.assertEqual(params.get_param(key), value)
+
+    def test_upgrade_preserves_custom_parameters(self):
+        params = self.env['ir.config_parameter'].sudo()
+        for filename, expected in self.SEEDS.items():
+            for key in expected:
+                params.set_param(key, 'administrator value')
+            self._load(filename, mode='update')
+            for key in expected:
+                self.assertEqual(params.get_param(key), 'administrator value')