Update pxt.json, blocks/hai2025/all_controls.md, blocks/hai2025/crafting4.md

Author: neonerz

blocks/hai2025/all_controls.md

@@ -34,6 +34,9 @@ hai.classifyWood(hai.logOak())
 hai.classifyWood(hai.logBirch())
 hai.classifyWood(hai.logAcacia())
 hai.classifyWood(hai.grass()))
+hai.upgradeTool(hai.pickaxe(),hai.wood())
+hai.upgradeTool(hai.axe(),hai.cobblestone())
+hai.upgradeTool(hai.shovel(),hai.cobblestone())
 ```
 
 ```template

blocks/hai2025/crafting4.md

@@ -0,0 +1,34 @@
+### @flyoutOnly true
+### @hideIteration true
+### @explicitHints true
+
+# Upgrade tools
+
+## Step 1
+Teach the agent that tools can be upgraded to different materials. Upgrade the axe, pickaxe, and shovel to stone tools.
+
+#### ~ tutorialhint 
+Upgrade each tool with cobblestone
+
+Pickaxe
+![Pickaxe](https://raw.githubusercontent.com/ReWrite-Media/makecode/master/blocks/hai2025/img/pickaxe_upgrade.png "Pickaxe")
+Axe
+![Axe](https://raw.githubusercontent.com/ReWrite-Media/makecode/master/blocks/hai2025/img/axe_upgrade.png "Axe")
+Shovel
+![Shovel](https://raw.githubusercontent.com/ReWrite-Media/makecode/master/blocks/hai2025/img/shovel_upgrade.png "Shovel")
+
+```ghost
+hai.upgradeTool(hai.pickaxe(),hai.cobblestone())
+hai.upgradeTool(hai.pickaxe(),hai.wood())
+hai.upgradeTool(hai.axe(),hai.cobblestone())
+hai.upgradeTool(hai.shovel(),hai.cobblestone())
+```
+```template
+hai.upgradeTool(hai.axe(),hai.ghostBlock())
+hai.upgradeTool(hai.ghostBlock(),hai.ghostBlock())
+hai.upgradeTool(hai.ghostBlock(),hai.ghostBlock())
+
+```
+```package
+hai2025-ts=github:ReWrite-Media/hai2025-ts#v0.0.74
+```

pxt.json

@@ -111,8 +111,8 @@
         "blocks/hai2025/crafting2.md",
         "blocks/hai2025/crafting3.md",
         "blocks/hai2025/all_controls.md",
-        "books/hai2025/crafting4.md",
-        "blocks/hai2025/shelter1.md"
+        "blocks/hai2025/shelter1.md",
+        "blocks/hai2025/crafting4.md"
     ],
     "testFiles": [],
     "targetVersions": {