[INIT-001] Initial project setup with Clean Architecture (feat)

- Implemented Clean Architecture with Domain, Application, Infrastructure, Presentation layers
- Added comprehensive project structure following SOLID principles
- Created Kubernetes deployment with Helm charts (HPA, PDB, NetworkPolicy)
- Configured ArgoCD for automated deployment (production + staging)
- Implemented CI/CD pipeline with GitHub Actions
- Added comprehensive documentation (handbook, architecture, coding standards)
- Configured PostgreSQL, Redis, Celery for backend services
- Created modern landing page with Persian fonts (Vazirmatn)
- Added Docker multi-stage build for production
- Configured development tools (pytest, black, flake8, mypy, isort)
- Added pre-commit hooks for code quality
- Implemented Makefile for common operations

docs/changelog/migrations.md

@@ -0,0 +1,65 @@
+# Database Migrations History
+
+این فایل تاریخچه تمام migration های دیتابیس را نگه می‌دارد.
+
+## Format
+
+هر migration باید شامل موارد زیر باشد:
+- تاریخ
+- نام فایل migration
+- توضیحات کامل
+- جداول/ستون‌های تغییر یافته
+- وابستگی‌ها
+- دستور rollback
+
+---
+
+## Migrations
+
+### 2025-01-24: Initial Setup
+
+**Migration**: `pending`
+**Description**: آماده‌سازی اولیه - هنوز migration اجرا نشده
+**Status**: Pending
+**Tables**: None yet
+**Dependencies**: None
+**Rollback**: N/A
+
+**Note**: اولین migration در فاز بعدی (phase0-database) ایجاد خواهد شد.
+
+---
+
+## Template برای Migration های آینده
+
+```markdown
+## YYYY-MM-DD: Title
+
+**Migration**: `XXX_description.py`
+**Description**: توضیحات کامل تغییرات
+**Status**: Applied / Pending / Rolled Back
+**Tables**: 
+- table_name_1
+- table_name_2
+
+**Changes**:
+- Added column `column_name` to `table_name`
+- Created table `new_table`
+- Added index on `column_name`
+
+**Dependencies**: 
+- Previous migration: XXX
+
+**SQL Summary**:
+```sql
+ALTER TABLE users ADD COLUMN two_factor_enabled BOOLEAN DEFAULT FALSE;
+```
+
+**Rollback**: 
+```bash
+alembic downgrade -1
+```
+
+**Tested**: Yes/No
+**Production Deploy Date**: YYYY-MM-DD
+```
+