Allow technicians to record training sessions (#664)

* Allow technicians to record training sessions

Add a per-item technician_can_train flag. Technicians in an item's department
who are passed out on a flagged item may log Training Started/Complete for it.

* Run linter

training/migrations/0009_trainingitem_technician_can_train.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.17 on 2026-10-03 14:59
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('training', '0008_unique_constraints'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='trainingitem',
+            name='technician_can_train',
+            field=models.BooleanField(default=False, help_text="Technicians in this item's department who are passed out on it may deliver training up to Training Complete"),
+        ),
+    ]