diff --git a/ai_docs/agent/backend/agent_state.json b/ai_docs/agent/backend/agent_state.json
index 59807b1..d973c3f 100644
--- a/ai_docs/agent/backend/agent_state.json
+++ b/ai_docs/agent/backend/agent_state.json
@@ -1,7 +1,7 @@
 {
   "component": "backend",
-  "current_task_id": "BACKEND-009",
-  "iteration_count": 7,
+  "current_task_id": "BACKEND-001",
+  "iteration_count": 8,
   "max_iterations": 10,
   "started_at": "2025-11-21T01:06:15.789515+00:00",
   "last_commit": null,
diff --git a/ai_docs/agent/backend/task_list.json b/ai_docs/agent/backend/task_list.json
index 6665c0d..0200345 100644
--- a/ai_docs/agent/backend/task_list.json
+++ b/ai_docs/agent/backend/task_list.json
@@ -30,7 +30,7 @@
       "id": "BACKEND-002",
       "title": "Implement Subscription Status Endpoint",
       "priority": "high",
-      "status": "in_progress",
+      "status": "pending",
       "estimated_hours": 2.0,
       "description": "Implement GET /api/v2/subscriptions/status endpoint to return current user's subscription status. Use SubscriptionManager.getSubscriptionDto() to get subscription info and return active status, start/finish dates.",
       "acceptance_criteria": [
@@ -102,7 +102,7 @@
       "id": "BACKEND-005",
       "title": "Add Promocodes List Endpoint",
       "priority": "medium",
-      "status": "in_progress",
+      "status": "pending",
       "estimated_hours": 2.0,
       "description": "Implement GET /api/v2/promocodes endpoint to list available promocodes for current user. Return active campaigns with their promocodes that user can apply. Filter by active status and date range.",
       "acceptance_criteria": [
@@ -125,7 +125,7 @@
       "id": "BACKEND-006",
       "title": "Add Promocode Validation Endpoint",
       "priority": "medium",
-      "status": "in_progress",
+      "status": "pending",
       "estimated_hours": 2.0,
       "description": "Implement GET /api/v2/promocodes/{code}/validate endpoint to validate a promocode without applying it. Check if code exists, is active, hasn't exceeded activation limits, and user is eligible.",
       "acceptance_criteria": [
@@ -149,7 +149,7 @@
       "id": "BACKEND-007",
       "title": "Write Unit Tests for Statistics Models",
       "priority": "medium",
-      "status": "in_progress",
+      "status": "pending",
       "estimated_hours": 3.0,
       "description": "Write comprehensive unit tests for all statistics-related models (PackProgressModel, AchievementModel, StudySessionModel) including toDto/fromDto conversions, serialization, and edge cases.",
       "acceptance_criteria": [
@@ -173,7 +173,7 @@
       "id": "BACKEND-008",
       "title": "Update OpenAPI Specification for Statistics Endpoints",
       "priority": "medium",
-      "status": "in_progress",
+      "status": "pending",
       "estimated_hours": 2.0,
       "description": "Update public/open_api.yaml to include all statistics endpoints (detailed, packs, words, timeline, sessions, achievements) with proper request/response schemas, query parameters, and examples.",
       "acceptance_criteria": [
diff --git a/mnemo_cards_backend/build/native_assets/linux/native_assets.json b/mnemo_cards_backend/build/native_assets/linux/native_assets.json
new file mode 100644
index 0000000..523bfc7
--- /dev/null
+++ b/mnemo_cards_backend/build/native_assets/linux/native_assets.json
@@ -0,0 +1 @@
+{"format-version":[1,0,0],"native-assets":{}}
\ No newline at end of file
diff --git a/mnemo_cards_backend/build/test_cache/build/8746986035b9c559d3df2c6b08d7cc62.cache.dill.track.dill b/mnemo_cards_backend/build/test_cache/build/8746986035b9c559d3df2c6b08d7cc62.cache.dill.track.dill
new file mode 100644
index 0000000..d474b9e
Binary files /dev/null and b/mnemo_cards_backend/build/test_cache/build/8746986035b9c559d3df2c6b08d7cc62.cache.dill.track.dill differ
diff --git a/mnemo_cards_backend/build/unit_test_assets/NOTICES.Z b/mnemo_cards_backend/build/unit_test_assets/NOTICES.Z
index 90f52ff..b01b352 100644
Binary files a/mnemo_cards_backend/build/unit_test_assets/NOTICES.Z and b/mnemo_cards_backend/build/unit_test_assets/NOTICES.Z differ
diff --git a/mnemo_cards_backend/libisar.so b/mnemo_cards_backend/libisar.so
new file mode 100644
index 0000000..f68a03f
Binary files /dev/null and b/mnemo_cards_backend/libisar.so differ