feat(parsers): add proverki.gov.ru parser with sync_inspections task

- Add InspectionRecord model with is_federal_law_248, data_year, data_month fields
- Add ProverkiClient with Playwright support for JS-rendered portal
- Add streaming XML parser for large files (>50MB)
- Add sync_inspections task with incremental loading logic
  - Starts from 01.01.2025 if DB is empty
  - Loads both FZ-294 and FZ-248 inspections
  - Stops after 2 consecutive empty months
- Add InspectionService methods: get_last_loaded_period, has_data_for_period
- Add Minpromtorg parsers (certificates, manufacturers)
- Add Django Admin for parser models
- Update README with parsers documentation and changelog

src/apps/core/admin.py

@@ -0,0 +1,152 @@
+"""
+Admin configuration for core app.
+"""
+
+from apps.core.models import BackgroundJob
+from django.contrib import admin
+from django.utils.html import format_html
+
+
+@admin.register(BackgroundJob)
+class BackgroundJobAdmin(admin.ModelAdmin):
+    """Admin для фоновых задач."""
+
+    list_display = [
+        "task_name_short",
+        "status_badge",
+        "progress_bar",
+        "user_id",
+        "started_at",
+        "duration_display",
+        "created_at",
+    ]
+    list_filter = ["status", "task_name", "created_at"]
+    search_fields = ["task_id", "task_name", "error"]
+    readonly_fields = [
+        "id",
+        "task_id",
+        "task_name",
+        "status",
+        "progress",
+        "progress_message",
+        "result",
+        "error",
+        "traceback",
+        "started_at",
+        "completed_at",
+        "user_id",
+        "meta",
+        "created_at",
+        "updated_at",
+    ]
+    ordering = ["-created_at"]
+    list_per_page = 50
+    date_hierarchy = "created_at"
+
+    fieldsets = (
+        (
+            "Задача",
+            {"fields": ("id", "task_id", "task_name", "user_id")},
+        ),
+        (
+            "Статус",
+            {"fields": ("status", "progress", "progress_message")},
+        ),
+        (
+            "Результат",
+            {"fields": ("result",), "classes": ("collapse",)},
+        ),
+        (
+            "Ошибка",
+            {"fields": ("error", "traceback"), "classes": ("collapse",)},
+        ),
+        (
+            "Время",
+            {"fields": ("started_at", "completed_at", "created_at", "updated_at")},
+        ),
+        (
+            "Метаданные",
+            {"fields": ("meta",), "classes": ("collapse",)},
+        ),
+    )
+
+    def task_name_short(self, obj):
+        """Сокращённое имя задачи."""
+        name = obj.task_name or ""
+        # Берём только последнюю часть пути
+        parts = name.split(".")
+        if len(parts) > 2:
+            return parts[-1]
+        return name
+
+    task_name_short.short_description = "Задача"
+    task_name_short.admin_order_field = "task_name"
+
+    def status_badge(self, obj):
+        """Цветной бейдж статуса."""
+        colors = {
+            "pending": "#6c757d",
+            "started": "#007bff",
+            "success": "#28a745",
+            "failure": "#dc3545",
+            "revoked": "#ffc107",
+            "retry": "#17a2b8",
+        }
+        color = colors.get(obj.status, "#6c757d")
+        return format_html(
+            '<span style="color: white; background: {}; padding: 3px 10px; '
+            'border-radius: 3px;">{}</span>',
+            color,
+            obj.get_status_display(),
+        )
+
+    status_badge.short_description = "Статус"
+    status_badge.admin_order_field = "status"
+
+    def progress_bar(self, obj):
+        """Прогресс-бар."""
+        progress = obj.progress or 0
+        color = "#28a745" if progress == 100 else "#007bff"
+        return format_html(
+            '<div style="width: 100px; background: #e9ecef; border-radius: 3px;">'
+            '<div style="width: {}px; background: {}; height: 18px; border-radius: 3px; '
+            'text-align: center; color: white; font-size: 11px; line-height: 18px;">'
+            "{}%</div></div>",
+            progress,
+            color,
+            progress,
+        )
+
+    progress_bar.short_description = "Прогресс"
+
+    def duration_display(self, obj):
+        """Длительность выполнения."""
+        duration = obj.duration
+        if duration is None:
+            return "-"
+        if duration < 60:
+            return f"{duration:.1f} сек"
+        return f"{duration / 60:.1f} мин"
+
+    duration_display.short_description = "Длительность"
+
+    def has_add_permission(self, request):
+        """Запретить создание записей вручную."""
+        return False
+
+    def has_change_permission(self, request, obj=None):
+        """Запретить редактирование записей."""
+        return False
+
+    actions = ["revoke_jobs"]
+
+    @admin.action(description="Отменить выбранные задачи")
+    def revoke_jobs(self, request, queryset):
+        from celery import current_app
+
+        count = 0
+        for job in queryset.filter(status__in=["pending", "started"]):
+            current_app.control.revoke(job.task_id, terminate=True)
+            job.revoke()
+            count += 1
+        self.message_user(request, f"Отменено {count} задач")