Update cache settings (#565)

Remove config for unused directories and update comments.
Handle firmware via the bundler.

Author: microbit-matt-hillsdon

deployment.cjs

@@ -30,22 +30,9 @@ module.exports = {
       CacheControl: "public, max-age=0, must-revalidate",
     },
     "**/assets/**": { CacheControl: "public, max-age=31536000, immutable" },
-    // There's lots in public/ that we'd ideally use the bundler for to improve caching
-    // TODO: this might no longer be true, or at least be an easy fix
-    "css/**": {
-      CacheControl: "public, max-age=0, must-revalidate",
-    },
-    "firmware/**": {
-      CacheControl: "public, max-age=0, must-revalidate",
-    },
+    // Just the favicon, other images via bundler/assets
     "imgs/**": {
       CacheControl: "public, max-age=0, must-revalidate",
     },
-    "sounds/**": {
-      CacheControl: "public, max-age=0, must-revalidate",
-    },
-    "webfonts/**": {
-      CacheControl: "public, max-age=0, must-revalidate",
-    },
   },
 };

public/firmware/MICROBIT.hex renamed to src/device/firmware/MICROBIT.hex

@@ -5,4 +5,5 @@ These are firmware files used for debugging and development. These are not inten
 Be warned that these may not always be up-to-date feature wise, and may need to be updated when new features are added to the hex files.
 
 #### Outdated firmware
-To test the outdated firmware warning, we have outdated firmware versions. These should be the same as the currently available hex, but with wrong/no version numbers announced.
+
+To test the outdated firmware warning, we have outdated firmware versions. These should be the same as the currently available hex, but with wrong/no version numbers announced.