tron: fix hard AI, links in subjects and set AI to run in strict mode

subjects/tron/ai/hard.js

@@ -101,7 +101,7 @@ const findBestPath = ({ ai }) => {
     return index === 0 || index === 1 ? ai.coords[2] : ai.coords[3]
   }
 
-  for ({ x, y, cardinal } of ai.coords) {
+  for (const { x, y, cardinal } of ai.coords) {
     // if everything is ok it must continue with the best path
     arr.push(calDistance(x, y, cardinal, 0))
   }

subjects/tron/index.html

@@ -204,13 +204,11 @@ const buildInfo = (ai, i) => {
 }
 
 const notInBounds = n => n >= 100 || n < 0
-
-
 const toBlob = async r => {
   if (!r.ok) throw Error(`${r.status}: ${r.statusText}`)
   const code = await r.text()
   const type = { type : 'text/javascript' }
-  const blob = new Blob([`${code}${injectedCode}`], type)
+  const blob = new Blob([`'use strict';${code}${injectedCode}`], type)
   return { url: URL.createObjectURL(blob, type), code }
 }
 

subjects/tron/tron.en.md

@@ -43,8 +43,8 @@ You will need to create a public repository with the name `tron`. Next you need
 - You may use this link [tron](/public/subjects/tron?ai=&seed=1653547275), to test your AI
 - You need to add your AI as a user in that link
   > Example:
-    - if your git login is **Frenchris** and you want to test against **LEEDASILVA** the link becomes: `/public/subjects/tron?AI=Frenchris@master+LEEDASILVA@master`
-    - if you want to test against the default `/random.js` AI the link becomes: `/public/subjects/tron?AI=Frenchris@master+/random.js`
+    - if your git login is **Frenchris** and you want to test against **LEEDASILVA** the link becomes: [/public/subjects/tron?ai=Frenchris@master+LEEDASILVA@master](/public/subjects/tron?ai=Frenchris@master+LEEDASILVA@master)
+    - if you want to test against the default `/random.js` AI the link becomes: [/public/subjects/tron?ai=Frenchris@master+/random.js](/public/subjects/tron?ai=Frenchris@master+/random.js)
 - Open the inspector of the browser used and **disable the cache**
 - let's change the update function so that your AI only goes forward.