feat(infra): add Netlify Image CDN and reduce web requests

Integrate @astrojs/netlify adapter with imageCDN enabled so all raster
images are optimized at the edge (AVIF/WebP format negotiation, resizing)
instead of at build time — zero code changes needed across existing
<Image> and getImage() usage.

Add robots.txt to block aggressive AI scrapers (GPTBot, Bytespider,
SemrushBot, etc.) and set crawl delays for legitimate search engines.
Add Cache-Control headers for HTML pages (1h TTL + stale-while-revalidate)
so repeat visits are served from Netlify's CDN edge cache.

Defer below-fold video components from client:load to client:visible so
their JS chunks only load when scrolled into view, reducing initial
requests per page — especially for bots that don't scroll.

- astro.config.mjs: add netlify() adapter, image.domains, remove dead
  vite.build.assets config
- netlify.toml: replace broken image redirect rules with [images] config
- public/robots.txt: block AI scrapers, crawl-delay for search engines
- public/_headers: add HTML page caching with stale-while-revalidate
- Audiodotcom.astro: remove format:"webp" (let CDN auto-negotiate),
  switch FeaturedVideo to client:visible
- ReleaseVideo.astro: switch SplitFeaturedVideo x2 to client:visible
- package.json: add @astrojs/netlify, remove unused @fontsource/twinkle-star

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: DilsonsPickles

.github/workflows/deploy.yml

@@ -1,13 +1,9 @@
 name: Deploy to GitHub Pages
 
 on:
-  # Trigger the workflow every time you push to the `main` branch
-  # Using a different branch name? Replace `main` with your branch’s name
-  push:
-    branches: [ main ]
-  # Allows you to run this workflow manually from the Actions tab on GitHub.
+  # Manual only — Netlify is primary host
   workflow_dispatch:
-  
+
 # Allow this job to clone the repo and create a page deployment
 permissions:
   contents: read
@@ -23,11 +19,9 @@ jobs:
       - name: Install, build, and upload your site
         uses: withastro/action@v3
         # with:
-            # path: . # The root location of your Astro project inside the repository. (optional)
-            # node-version: 16 # The specific version of Node that should be used to build your site. Defaults to 16. (optional)
-            # package-manager: yarn # The Node package manager that should be used to install dependencies and build your site. Automatically detected based on your lockfile. (optional)
-
-
+        # path: . # The root location of your Astro project inside the repository. (optional)
+        # node-version: 16 # The specific version of Node that should be used to build your site. Defaults to 16. (optional)
+        # package-manager: yarn # The Node package manager that should be used to install dependencies and build your site. Automatically detected based on your lockfile. (optional)
 
   deploy:
     needs: build
@@ -38,4 +32,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v4

.gitignore

@@ -20,4 +20,6 @@ pnpm-debug.log*
 # macOS-specific files
 .DS_Store
 
-*.code-workspace
+*.code-workspace
+# Local Netlify folder
+.netlify

astro.config.mjs

@@ -2,15 +2,16 @@ import { defineConfig } from "astro/config";
 import tailwind from "@astrojs/tailwind";
 import react from "@astrojs/react";
 import icon from "astro-icon";
-
 import sitemap from "@astrojs/sitemap";
-
-// https://astro.build/config
 import compressor from "astro-compressor";
+import netlify from "@astrojs/netlify";
 
-// https://astro.build/config
 export default defineConfig({
   site: "https://www.audacityteam.org",
+  adapter: netlify({ imageCDN: true }),
+  image: {
+    domains: ["i.ytimg.com"],
+  },
   integrations: [
     tailwind({
       // Example: Disable injecting a basic `base.css` import on every page.
@@ -36,8 +37,5 @@ export default defineConfig({
         "@datapunt/matomo-tracker-js",
       ],
     },
-    build: {
-      assets: 'assets',
-    },
   },
 });

netlify.toml

@@ -0,0 +1,17 @@
+[build]
+  command = "npm run build"
+  publish = "dist"
+
+# Disable redundant post-processing (Astro already handles this)
+[build.processing.css]
+  bundle = false
+  minify = false
+[build.processing.js]
+  bundle = false
+  minify = false
+[build.processing.images]
+  compress = false
+
+# Allow external images through Netlify Image CDN
+[images]
+  remote_images = ["https://i\\.ytimg\\.com/.*"]