diff --git a/fusion_plating/fusion_plating/__manifest__.py b/fusion_plating/fusion_plating/__manifest__.py
index 2ea63d25..2bf973ae 100644
--- a/fusion_plating/fusion_plating/__manifest__.py
+++ b/fusion_plating/fusion_plating/__manifest__.py
@@ -5,7 +5,7 @@
 
 {
     'name': 'Fusion Plating',
-    'version': '19.0.8.6.0',
+    'version': '19.0.8.6.1',
     'category': 'Manufacturing/Plating',
     'summary': 'Core plating / metal finishing ERP: facilities, processes, tanks, baths, jobs, operators.',
     'description': """
diff --git a/fusion_plating/fusion_plating/models/fp_job_step.py b/fusion_plating/fusion_plating/models/fp_job_step.py
index cf999da2..33730f48 100644
--- a/fusion_plating/fusion_plating/models/fp_job_step.py
+++ b/fusion_plating/fusion_plating/models/fp_job_step.py
@@ -136,8 +136,9 @@ class FpJobStep(models.Model):
     # ------------------------------------------------------------------
     # Cost rollup (Task 1.6)
     # cost_per_hour comes from fp.work.centre (Task 1.2 added it there).
-    # cost_total recomputes when duration_actual or rate changes —
-    # duration_actual will be sum of timelog rows once Task 1.7 lands.
+    # cost_total recomputes when duration_actual or rate changes.
+    # duration_actual is set by button_finish as the sum of timelog
+    # row durations (see fp.job.step.timelog).
     # ------------------------------------------------------------------
     cost_per_hour = fields.Monetary(
         related='work_centre_id.cost_per_hour',
@@ -197,16 +198,19 @@ class FpJobStep(models.Model):
                 raise UserError(_(
                     "Step '%s' is in state '%s' — only ready/paused steps can start."
                 ) % (step.name, step.state))
+            now = fields.Datetime.now()
             step.state = 'in_progress'
             # First-start audit (mirrors button_finish first-finish guard)
             if not step.date_started:
-                step.date_started = fields.Datetime.now()
+                step.date_started = now
                 step.started_by_user_id = self.env.user
-            # Open a fresh timelog row for this start interval
+            # Open a fresh timelog row for this start interval — uses the
+            # same `now` as the first-start stamp so the step and its
+            # first log share a single instant.
             self.env['fp.job.step.timelog'].create({
                 'step_id': step.id,
                 'user_id': self.env.user.id,
-                'date_started': fields.Datetime.now(),
+                'date_started': now,
             })
         return True
 
diff --git a/fusion_plating/fusion_plating/security/ir.model.access.csv b/fusion_plating/fusion_plating/security/ir.model.access.csv
index 3f165844..39042737 100644
--- a/fusion_plating/fusion_plating/security/ir.model.access.csv
+++ b/fusion_plating/fusion_plating/security/ir.model.access.csv
@@ -54,4 +54,5 @@ access_fp_job_step_operator,fp.job.step.operator,model_fp_job_step,fusion_platin
 access_fp_job_step_supervisor,fp.job.step.supervisor,model_fp_job_step,fusion_plating.group_fusion_plating_supervisor,1,1,1,0
 access_fp_job_step_manager,fp.job.step.manager,model_fp_job_step,fusion_plating.group_fusion_plating_manager,1,1,1,1
 access_fp_job_step_timelog_operator,fp.job.step.timelog.operator,model_fp_job_step_timelog,fusion_plating.group_fusion_plating_operator,1,1,1,0
+access_fp_job_step_timelog_supervisor,fp.job.step.timelog.supervisor,model_fp_job_step_timelog,fusion_plating.group_fusion_plating_supervisor,1,1,1,0
 access_fp_job_step_timelog_manager,fp.job.step.timelog.manager,model_fp_job_step_timelog,fusion_plating.group_fusion_plating_manager,1,1,1,1