diff --git a/fusion_plating/fusion_plating_jobs/__manifest__.py b/fusion_plating/fusion_plating_jobs/__manifest__.py
index 864bdc41..db9075d7 100644
--- a/fusion_plating/fusion_plating_jobs/__manifest__.py
+++ b/fusion_plating/fusion_plating_jobs/__manifest__.py
@@ -3,7 +3,7 @@
 # License OPL-1 (Odoo Proprietary License v1.0)
 {
     'name': 'Fusion Plating — Native Jobs',
-    'version': '19.0.1.6.0',
+    'version': '19.0.1.7.0',
     'category': 'Manufacturing/Plating',
     'summary': 'Native plating job model — replaces mrp.production / mrp.workorder bridge.',
     'description': """
@@ -27,7 +27,9 @@ full design rationale and §6.2 of the implementation plan for task list.
         'fusion_plating_batch',          # fusion.plating.batch (Phase 3)
         'fusion_plating_certificates',   # fp.certificate, fp.thickness.reading
         'fusion_plating_configurator',   # fp.part.catalog, fp.coating.config
+        'fusion_plating_kpi',            # fusion.plating.kpi.value (Phase 4)
         'fusion_plating_logistics',      # fusion.plating.delivery
+        'fusion_plating_notifications',  # fp.notification.template (Phase 4)
         'fusion_plating_portal',         # fusion.plating.portal.job
         'fusion_plating_quality',        # fusion.plating.customer.spec, fusion.plating.quality.hold
         'fusion_plating_receiving',      # fp.racking.inspection (Phase 3)
diff --git a/fusion_plating/fusion_plating_jobs/models/__init__.py b/fusion_plating/fusion_plating_jobs/models/__init__.py
index 5d87aad9..7cc8f7fc 100644
--- a/fusion_plating/fusion_plating_jobs/models/__init__.py
+++ b/fusion_plating/fusion_plating_jobs/models/__init__.py
@@ -19,3 +19,7 @@ from . import fp_certificate
 from . import fp_thickness_reading
 from . import fp_delivery
 from . import fp_racking_inspection
+
+# Phase 4 — light refactors batch B (notifications, KPI source tag).
+from . import fp_notification_trigger
+from . import fusion_plating_kpi_value
diff --git a/fusion_plating/fusion_plating_jobs/models/fp_job.py b/fusion_plating/fusion_plating_jobs/models/fp_job.py
index 457001f0..89033fdd 100644
--- a/fusion_plating/fusion_plating_jobs/models/fp_job.py
+++ b/fusion_plating/fusion_plating_jobs/models/fp_job.py
@@ -260,6 +260,7 @@ class FpJob(models.Model):
             job._fp_create_portal_job()
             job._fp_create_qc_check_if_needed()
             job._fp_create_racking_inspection()
+            job._fp_fire_notification('job_confirmed')
         return result
 
     def _fp_create_racking_inspection(self):
@@ -382,8 +383,43 @@ class FpJob(models.Model):
             job.date_finished = fields.Datetime.now()
             job._fp_create_delivery()
             job._fp_create_certificates()
+            job._fp_fire_notification('job_complete')
         return True
 
+    # ------------------------------------------------------------------
+    # Notifications dispatch (Phase 4)
+    #
+    # Fires fp.notification.template records whose trigger_event matches
+    # the given event name. Best-effort: silently skips if the
+    # fusion_plating_notifications module is not installed (model not
+    # registered) and logs (without raising) on any send failure so the
+    # job lifecycle is never blocked by an email problem.
+    # ------------------------------------------------------------------
+    def _fp_fire_notification(self, event):
+        """Best-effort notification dispatch for fp.job lifecycle events.
+
+        Looks up fp.notification.template records with the matching
+        trigger_event and dispatches via the central _dispatch helper
+        provided by fusion_plating_notifications. Silently no-ops when
+        that module isn't installed.
+        """
+        self.ensure_one()
+        if 'fp.notification.template' not in self.env:
+            return
+        Template = self.env['fp.notification.template'].sudo()
+        try:
+            # The notifications module exposes a model-level _dispatch
+            # helper that handles template lookup, recipient resolution
+            # (Sub 6 contact routing), attachment rendering, and audit
+            # logging in one go. Pass partner explicitly since fp.job's
+            # partner_id is the customer.
+            Template._dispatch(event, self, partner=self.partner_id)
+        except Exception as e:
+            _logger.warning(
+                "Job %s: notification %s dispatch failed: %s",
+                self.name, event, e,
+            )
+
     def _fp_create_delivery(self):
         """Create a draft fusion.plating.delivery linked to this job."""
         self.ensure_one()
diff --git a/fusion_plating/fusion_plating_jobs/models/fp_notification_trigger.py b/fusion_plating/fusion_plating_jobs/models/fp_notification_trigger.py
new file mode 100644
index 00000000..265ce4dd
--- /dev/null
+++ b/fusion_plating/fusion_plating_jobs/models/fp_notification_trigger.py
@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+# Copyright 2026 Nexa Systems Inc.
+# License OPL-1 (Odoo Proprietary License v1.0)
+#
+# Adds 'job_confirmed' and 'job_complete' trigger events to the
+# fp.notification.template selection. Fired from fp.job lifecycle
+# hooks (action_confirm, button_mark_done).
+#
+# bridge_mrp's existing 'mo_confirmed' / 'mo_complete' triggers
+# stay alive for the legacy MO flow.
+
+from odoo import fields, models
+
+
+class FpNotificationTemplate(models.Model):
+    _inherit = 'fp.notification.template'
+
+    trigger_event = fields.Selection(
+        selection_add=[
+            ('job_confirmed', 'Plating Job Confirmed'),
+            ('job_complete', 'Plating Job Complete'),
+        ],
+        ondelete={
+            'job_confirmed': 'cascade',
+            'job_complete': 'cascade',
+        },
+    )
diff --git a/fusion_plating/fusion_plating_jobs/models/fusion_plating_kpi_value.py b/fusion_plating/fusion_plating_jobs/models/fusion_plating_kpi_value.py
new file mode 100644
index 00000000..4ac1a4d9
--- /dev/null
+++ b/fusion_plating/fusion_plating_jobs/models/fusion_plating_kpi_value.py
@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+# Copyright 2026 Nexa Systems Inc.
+# License OPL-1 (Odoo Proprietary License v1.0)
+#
+# Tags KPI values by source: 'mrp' (legacy bridge_mrp rollups) vs
+# 'jobs' (native fp.job rollups). Lets Phase 9 / Phase 10 dashboards
+# show both side-by-side or filter to one.
+
+from odoo import fields, models
+
+
+class FusionPlatingKpiValue(models.Model):
+    _inherit = 'fusion.plating.kpi.value'
+
+    x_fc_source = fields.Selection(
+        [
+            ('mrp', 'MRP (legacy)'),
+            ('jobs', 'Native Jobs'),
+        ],
+        string='Data Source',
+        default='mrp',
+        index=True,
+        help='Which data path produced this KPI value. Phase 9+ '
+             'rollups from fp.job/fp.job.step set this to jobs.',
+    )
diff --git a/fusion_plating/fusion_plating_jobs/tests/test_fp_job_extensions.py b/fusion_plating/fusion_plating_jobs/tests/test_fp_job_extensions.py
index e5e8af1a..1324a3c9 100644
--- a/fusion_plating/fusion_plating_jobs/tests/test_fp_job_extensions.py
+++ b/fusion_plating/fusion_plating_jobs/tests/test_fp_job_extensions.py
@@ -462,3 +462,44 @@ class TestPhase3Refactors(TransactionCase):
                 [('x_fc_job_id', '=', job.id)],
             )
             self.assertFalse(inspections)
+
+
+class TestPhase4Refactors(TransactionCase):
+    """Phase 4 — light refactors batch B (notifications, KPI source tag).
+
+    Configurator integration is already covered by Task 2.5's SO confirm
+    hook (which reads x_fc_part_catalog_id / x_fc_coating_config_id from
+    sale.order.line — see TestSoConfirmHook above).
+    """
+
+    def setUp(self):
+        super().setUp()
+        self.partner = self.env['res.partner'].create({'name': 'C'})
+        self.product = self.env['product.product'].create({'name': 'P'})
+
+    def test_kpi_value_has_source_field(self):
+        if 'fusion.plating.kpi.value' in self.env:
+            self.assertIn(
+                'x_fc_source',
+                self.env['fusion.plating.kpi.value']._fields,
+            )
+
+    def test_notification_template_has_job_triggers(self):
+        if 'fp.notification.template' in self.env:
+            triggers = dict(
+                self.env['fp.notification.template']
+                ._fields['trigger_event'].selection
+            )
+            self.assertIn('job_confirmed', triggers)
+            self.assertIn('job_complete', triggers)
+
+    def test_action_confirm_calls_fire_notification(self):
+        # Smoke test — creates a job, confirms it, verifies no exception
+        # thrown by the notification path even when no templates exist.
+        job = self.env['fp.job'].create({
+            'partner_id': self.partner.id,
+            'product_id': self.product.id,
+            'qty': 1.0,
+        })
+        job.action_confirm()  # Should not raise even with no templates
+        self.assertEqual(job.state, 'confirmed')