feat: Complete CI/CD pipeline setup and code optimizations

- ✅ Fixed GitHub Actions CI/CD pipeline configuration
- ✅ Resolved Security Scan permissions and resource access issues
- ✅ Fixed Build Application --output option warning
- ✅ Configured Create Release step for proper execution
- ✅ Added Dependabot for automatic dependency updates
- ✅ Added CODEOWNERS for code review assignments
- ✅ Optimized Dashboard.tsx with useMemo for better performance
- ✅ Fixed useEffect dependencies in Dashboard
- ✅ Cleaned up console.log statements for production
- ✅ Fixed PowerShell script variable usage warnings
- ✅ Fixed CSS class duplication in Checkbox component

Pipeline now includes:
- Version Consistency Check
- Frontend Tests (linting, type-check, tests)
- Backend Tests (with MySQL service)
- Security Scan (Trivy + npm audit)
- Build Application (frontend + backend)
- Create Release (automatic on main branch)

Author: decode2

.github/CODEOWNERS

@@ -0,0 +1,28 @@
+# Global code owners
+* @devel
+
+# Frontend specific
+/client-ts/ @devel
+
+# Backend specific
+/Api/ @devel
+/Models/ @devel
+/Services/ @devel
+/Data/ @devel
+/Dtos/ @devel
+/Validators/ @devel
+/ViewModels/ @devel
+
+# Configuration files
+*.csproj @devel
+*.sln @devel
+appsettings*.json @devel
+Program.cs @devel
+
+# Documentation
+*.md @devel
+README.md @devel
+DEVELOPMENT_GUIDE.md @devel
+
+# CI/CD
+/.github/ @devel

.github/dependabot.yml

@@ -0,0 +1,58 @@
+version: 2
+updates:
+  # Enable version updates for npm
+  - package-ecosystem: "npm"
+    directory: "/client-ts"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "09:00"
+    open-pull-requests-limit: 10
+    reviewers:
+      - "devel"
+    assignees:
+      - "devel"
+    commit-message:
+      prefix: "chore"
+      include: "scope"
+    labels:
+      - "dependencies"
+      - "frontend"
+
+  # Enable version updates for NuGet
+  - package-ecosystem: "nuget"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "09:00"
+    open-pull-requests-limit: 10
+    reviewers:
+      - "devel"
+    assignees:
+      - "devel"
+    commit-message:
+      prefix: "chore"
+      include: "scope"
+    labels:
+      - "dependencies"
+      - "backend"
+
+  # Enable version updates for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "09:00"
+    open-pull-requests-limit: 5
+    reviewers:
+      - "devel"
+    assignees:
+      - "devel"
+    commit-message:
+      prefix: "chore"
+      include: "scope"
+    labels:
+      - "dependencies"
+      - "github-actions"