feat: wire contract PDF context and align MechanicAuto with AutoEvaluation

- contract PDF: map report/customer/owner/contract from AutoEvaluationModel
  fields, accept inspection via POST serializer, fetch CBU.uz currency rates
- MechanicAutoEvaluation: add distance_covered, object_owner_residence and
  car_position/body_type/fuel_type/state_car/assessment_task_type FKs; drop
  car_type and single tex_passport_file in favour of multi-file FK model

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

core/apps/evaluation/migrations/0046_mechanicauto_fields_and_multi_tex_passport.py

@@ -0,0 +1,118 @@
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("evaluation", "0045_alter_referenceitemmodel_type"),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name="mechanicautoevaluationmodel",
+            name="car_type",
+        ),
+        migrations.RemoveField(
+            model_name="mechanicautoevaluationmodel",
+            name="tex_passport_file",
+        ),
+        migrations.AddField(
+            model_name="mechanicautoevaluationmodel",
+            name="distance_covered",
+            field=models.PositiveIntegerField(blank=True, null=True, verbose_name="distance covered"),
+        ),
+        migrations.AddField(
+            model_name="mechanicautoevaluationmodel",
+            name="object_owner_residence",
+            field=models.CharField(blank=True, max_length=255, null=True, verbose_name="object owner residence"),
+        ),
+        migrations.AddField(
+            model_name="mechanicautoevaluationmodel",
+            name="car_position",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                related_name="evaluation_mechanic_auto_car_position",
+                to="evaluation.referenceitemmodel",
+                verbose_name="car position",
+            ),
+        ),
+        migrations.AddField(
+            model_name="mechanicautoevaluationmodel",
+            name="body_type",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                related_name="evaluation_mechanic_auto_body_type",
+                to="evaluation.referenceitemmodel",
+                verbose_name="body type",
+            ),
+        ),
+        migrations.AddField(
+            model_name="mechanicautoevaluationmodel",
+            name="fuel_type",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                related_name="evaluation_mechanic_auto_fuel_type",
+                to="evaluation.referenceitemmodel",
+                verbose_name="fuel type",
+            ),
+        ),
+        migrations.AddField(
+            model_name="mechanicautoevaluationmodel",
+            name="state_car",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                related_name="evaluation_mechanic_auto_state_car",
+                to="evaluation.referenceitemmodel",
+                verbose_name="state car",
+            ),
+        ),
+        migrations.AddField(
+            model_name="mechanicautoevaluationmodel",
+            name="assessment_task_type",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                related_name="evaluation_mechanic_auto_assessment_task_type",
+                to="evaluation.referenceitemmodel",
+                verbose_name="assessment task type",
+            ),
+        ),
+        migrations.CreateModel(
+            name="MechanicAutoEvaluationTexPassportFile",
+            fields=[
+                ("id", models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name="ID")),
+                ("created_at", models.DateTimeField(auto_now_add=True)),
+                ("updated_at", models.DateTimeField(auto_now=True)),
+                (
+                    "file",
+                    models.FileField(
+                        upload_to="mechanic_evaluation/tech_passports/%Y/%m/",
+                        verbose_name="tech passport file",
+                    ),
+                ),
+                (
+                    "mechanic_auto_evaluation",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="tex_passport_files",
+                        to="evaluation.mechanicautoevaluationmodel",
+                    ),
+                ),
+            ],
+            options={
+                "verbose_name": "Mechanic Auto Evaluation Tex Passport File",
+                "verbose_name_plural": "Mechanic Auto Evaluation Tex Passport Files",
+                "db_table": "MechanicAutoEvaluationTexPassportFile",
+            },
+        ),
+    ]