Fix allow_mail_archived_partner causing system notifications to send emails

partner_hierarchical_name/__init__.py

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+from . import models

partner_hierarchical_name/__manifest__.py

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+{
+    "name": "Partner Hierarchical Name",
+    "version": "16.0.1.0.0",
+    "summary": "Show full partner hierarchy in dropdowns (Company / Delivery / Contact)",
+    "category": "Contacts",
+    "author": "Van Bernaert (Developer), Domus La Vila (Distributor)",
+    "license": "LGPL-3",
+    "depends": ["base"],
+    "installable": True,
+    "application": False,
+
+    "assets": {
+        "web.assets_backend": [
+            "partner_hierarchical_name/static/src/css/many2one_dropdown.css",
+        ],
+    },
+}

partner_hierarchical_name/models/__init__.py

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+from . import res_partner

partner_hierarchical_name/models/res_partner.py

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+from odoo import models
+
+
+class ResPartner(models.Model):
+    _inherit = "res.partner"
+
+    def name_get(self):
+        result = []
+
+        for partner in self:
+            names = []
+            current = partner
+
+            # Walk up the hierarchy
+            while current:
+                if current.name:
+                    names.append(current.name)
+                current = current.parent_id
+
+            # Reverse to show top-down (L1 / L2 / L3)
+            full_name = " / ".join(reversed(names))
+
+            result.append((partner.id, full_name))
+
+        return result

partner_hierarchical_name/static/src/css/many2one_dropdown.css

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+/* jQuery UI autocomplete dropdown (authoritative override) */
+.ui-autocomplete {
+    min-width: 650px !important;
+    max-width: 900px !important;
+
+    /* Float above form & right column */
+    z-index: 1100 !important;
+
+    /* Allow multi-line hierarchy */
+    white-space: normal !important;
+}
+
+/* Ensure individual items wrap */
+.ui-autocomplete .ui-menu-item-wrapper {
+    white-space: normal !important;
+    word-break: break-word;
+}
+
+/* Prevent clipping by form containers */
+.o_form_view,
+.o_form_sheet,
+.o_form_sheet_bg {
+    overflow: visible !important;
+}