feat: optimize repo for AWS Amplify deployment (#349)

- Add amplify.yml with pnpm-based build pipeline and caching configuration
- Set Next.js output to standalone for AWS runtime compatibility
- Port Vercel caching headers to Next.js headers() config for Amplify
- Add long-term caching for static assets and _next/static files
- Configure build artifacts and cache paths for optimal Amplify performance

This addresses the expensive Vercel hosting by preparing the codebase for seamless migration to AWS Amplify with proper caching strategies and build optimizations.

Author: sahil kapase

amplify.yml

@@ -0,0 +1,51 @@
+version: 1
+applications:
+  - appRoot: .
+    frontend:
+      phases:
+        preBuild:
+          commands:
+            - corepack enable
+            - corepack prepare pnpm@9.1.4 --activate
+            - pnpm install --frozen-lockfile
+        build:
+          commands:
+            - pnpm build
+      artifacts:
+        baseDirectory: .next
+        files:
+          - '**/*'
+      cache:
+        paths:
+          - node_modules/**
+          - .next/cache/**
+    customHeaders:
+      - pattern: /_next/static/*
+        headers:
+          - key: Cache-Control
+            value: public, max-age=31536000, immutable
+      - pattern: /public/*
+        headers:
+          - key: Cache-Control
+            value: public, max-age=604800, stale-while-revalidate=86400
+      - pattern: /api/upcoming-papers
+        headers:
+          - key: Cache-Control
+            value: s-maxage=60, stale-while-revalidate=120
+      - pattern: /api/papers
+        headers:
+          - key: Cache-Control
+            value: s-maxage=60, stale-while-revalidate=120
+      - pattern: /api/selected-papers
+        headers:
+          - key: Cache-Control
+            value: s-maxage=60, stale-while-revalidate=120
+      - pattern: /api/related-subject
+        headers:
+          - key: Cache-Control
+            value: s-maxage=60, stale-while-revalidate=120
+      - pattern: /api/course-list
+        headers:
+          - key: Cache-Control
+            value: s-maxage=60, stale-while-revalidate=120
+

next.config.js

@@ -7,9 +7,56 @@ await import("./src/env.js");
 /** @type {import("next").NextConfig} */
 const config = {
   swcMinify: false,
+  output: "standalone",
   images: {
     domains: ["res.cloudinary.com"],
   },
+  async headers() {
+    return [
+      {
+        source: "/api/upcoming-papers",
+        headers: [
+          { key: "Cache-Control", value: "s-maxage=60, stale-while-revalidate=120" },
+        ],
+      },
+      {
+        source: "/api/papers",
+        headers: [
+          { key: "Cache-Control", value: "s-maxage=60, stale-while-revalidate=120" },
+        ],
+      },
+      {
+        source: "/api/selected-papers",
+        headers: [
+          { key: "Cache-Control", value: "s-maxage=60, stale-while-revalidate=120" },
+        ],
+      },
+      {
+        source: "/api/related-subject",
+        headers: [
+          { key: "Cache-Control", value: "s-maxage=60, stale-while-revalidate=120" },
+        ],
+      },
+      {
+        source: "/api/course-list",
+        headers: [
+          { key: "Cache-Control", value: "s-maxage=60, stale-while-revalidate=120" },
+        ],
+      },
+      {
+        source: "/_next/static/:path*",
+        headers: [
+          { key: "Cache-Control", value: "public, max-age=31536000, immutable" },
+        ],
+      },
+      {
+        source: "/:all*(css|js|png|jpg|jpeg|gif|webp|svg|ico|woff|woff2)",
+        headers: [
+          { key: "Cache-Control", value: "public, max-age=604800, stale-while-revalidate=86400" },
+        ],
+      },
+    ];
+  },
   webpack: (config, options) => {
     config.resolve.alias.canvas = false;
     config.module.rules.push({