[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

argocd/application.yaml

@@ -0,0 +1,47 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: peikarband
+  namespace: argocd
+  finalizers:
+    - resources-finalizer.argocd.argoproj.io
+spec:
+  project: default
+  
+  source:
+    repoURL: git@git.peikarband.ir:ehsan-minadd/peikarband.git
+    targetRevision: HEAD
+    path: helm/peikarband
+    helm:
+      releaseName: peikarband
+      valueFiles:
+        - values-production.yaml
+  
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: peikarband
+  
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+      allowEmpty: false
+    syncOptions:
+      - CreateNamespace=true
+      - PrunePropagationPolicy=foreground
+      - PruneLast=true
+    retry:
+      limit: 5
+      backoff:
+        duration: 5s
+        factor: 2
+        maxDuration: 3m
+  
+  revisionHistoryLimit: 10
+  
+  ignoreDifferences:
+    - group: apps
+      kind: Deployment
+      jsonPointers:
+        - /spec/replicas
+