feat: Add CI/CD pipeline and code quality improvements

- Add GitHub Actions workflow for automated CI/CD
- Configure Node.js 18.x and 20.x matrix testing
- Add TypeScript type checking step
- Add ESLint code quality checks with enhanced rules
- Add Prettier formatting verification
- Add production build validation
- Upload build artifacts for deployment
- Set up automated testing on push/PR
- Replace console.log with environment-aware logger
- Add pre-commit hooks for code quality
- Exclude archive folder from linting

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/components/analytics/PeriodSelector.tsx

@@ -1,7 +1,6 @@
-
-import React from 'react';
-import { ChevronLeft, ChevronRight } from 'lucide-react';
-import { useIsMobile } from '@/hooks/use-mobile';
+import React from "react";
+import { ChevronLeft, ChevronRight } from "lucide-react";
+import { useIsMobile } from "@/hooks/use-mobile";
 
 interface PeriodSelectorProps {
   selectedPeriod: string;
@@ -12,27 +11,21 @@ interface PeriodSelectorProps {
 const PeriodSelector: React.FC<PeriodSelectorProps> = ({
   selectedPeriod,
   onPrevPeriod,
-  onNextPeriod
+  onNextPeriod,
 }) => {
   const isMobile = useIsMobile();
 
   return (
     <div className="flex items-center justify-between mb-6 w-full">
-      <button 
-        className="neuro-flat p-2 rounded-full"
-        onClick={onPrevPeriod}
-      >
+      <button className="neuro-flat p-2 rounded-full" onClick={onPrevPeriod}>
         <ChevronLeft size={20} />
       </button>
-      
+
       <div className="flex items-center">
         <span className="font-medium text-lg">{selectedPeriod}</span>
       </div>
-      
-      <button 
-        className="neuro-flat p-2 rounded-full"
-        onClick={onNextPeriod}
-      >
+
+      <button className="neuro-flat p-2 rounded-full" onClick={onNextPeriod}>
         <ChevronRight size={20} />
       </button>
     </div>