feat: add governed knowledge lifecycle

backend/apps/knowledge/migrations/0007_ticketknowledgedistillation.py

@@ -0,0 +1,42 @@
+# Generated by Django 5.2.15 on 2026-07-27 05:35
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('agents', '0005_agentversion_allowed_actions'),
+        ('knowledge', '0006_backfill_governed_assets'),
+        ('solutions', '0003_solution_allow_auto_resolve_and_more'),
+        ('tickets', '0013_ticketsupportanalysis_applied_solution_and_more'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='TicketKnowledgeDistillation',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('references', models.JSONField(default=list)),
+                ('retrieval_policy', models.JSONField(default=dict)),
+                ('should_distill', models.BooleanField(blank=True, null=True)),
+                ('reason', models.TextField(blank=True)),
+                ('assessment', models.JSONField(blank=True, default=dict)),
+                ('processed_at', models.DateTimeField(blank=True, null=True)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('created_by', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='created_knowledge_distillations', to=settings.AUTH_USER_MODEL)),
+                ('knowledge_item', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='distillation_records', to='knowledge.knowledgeitem')),
+                ('run', models.OneToOneField(on_delete=django.db.models.deletion.PROTECT, related_name='ticket_knowledge_distillation', to='agents.agentrun')),
+                ('solution', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='distillation_records', to='solutions.solution')),
+                ('ticket', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='knowledge_distillations', to='tickets.ticket')),
+                ('troubleshooting_plan', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='distillation_records', to='knowledge.troubleshootingplan')),
+            ],
+            options={
+                'ordering': ['-created_at'],
+                'indexes': [models.Index(fields=['ticket', 'created_at'], name='knowledge_t_ticket__fb3275_idx')],
+            },
+        ),
+    ]