add a tagging system to the website

content/programming/tairu.tree

@@ -1,9 +1,11 @@
-%% title = "tairu - an interactive exploration of 2D autotiling techniques"
+%% id = "b?01HQ6G30PTVT5H0Z04VVRHEZQF"
+title = "tairu - an interactive exploration of 2D autotiling techniques"
 scripts = [
     "treehouse/components/literate-programming.js",
     "treehouse/vendor/codejar.js",
 ]
 styles = ["page/tairu.css"]
+tags = ["all", "programming", "graphics", "javascript"]
 
 % id = "01HPD4XQPWM8ECT2QM6AT9YRWB"
 - I remember since my early days doing programming, I've been interested in how games like Terraria handle automatically tiling their terrain.
@@ -209,7 +211,7 @@ styles = ["page/tairu.css"]
         borderWidth: 4,
     });
     ```
-    
+
     {:program=tairu :placeholder=01HQ49TJZFMK719KSE16SG3F7B}
     ```output
     ```
@@ -436,7 +438,7 @@ styles = ["page/tairu.css"]
     ```
 
     {:program=tairu :placeholder=01HQ49X8Z57FNMN3E79FYF8CMG}
-    ```output 
+    ```output
     ```
 
     % id = "01HQ162WWA03JAGJYCT0DRZP24"
@@ -461,7 +463,7 @@ styles = ["page/tairu.css"]
     ```
 
     {:program=tairu :placeholder=01HQ49YDPQXYSAT5N6P241DG3C}
-    ```output 
+    ```output
     ```
 
     % id = "01HQ162WWAB0AYSPGB4AEVT03Z"
@@ -490,7 +492,7 @@ styles = ["page/tairu.css"]
     ```
 
     {:program=tairu :placeholder=01HQ49Z8JWR75D85DGHCB34K8E}
-    ```output 
+    ```output
     ```
 
     % id = "01HQ1K39AS4VDW7DVTAGQ03WFM"
@@ -514,7 +516,7 @@ styles = ["page/tairu.css"]
             % classes.branch = "tileset-four-to-eight-demo"
               id = "01HQ1K39ASR81NWMW8Q0MF8QMP"
             - enhance!
-           
+
             {% NOTE djot: I don't there's a way to achieve this in Djot alone %}
             ``` =html
             <ul class="directions-square bend">
@@ -599,7 +601,7 @@ styles = ["page/tairu.css"]
         ```
 
         {:program=tairu :placeholder=01HQ4A01MPE6JT5ZZFEN9S635W}
-        ```output 
+        ```output
         ```
 
         % id = "01HQ1K39AS7CRBZ67N1VVHCVME"
@@ -953,7 +955,7 @@ styles = ["page/tairu.css"]
     ```
 
     {:program=tairu :placeholder=01HQ4A11RRXEQ850598GFBJN0B}
-    ```output 
+    ```output
     ```
 
     % id = "01HQ1M84GSCXTPGVPXY840WCQ6"
@@ -984,7 +986,7 @@ new TilesetTileEditor({
 ```
 
 {:program=tairu :placeholder=01HQ4A45WNAEJGCT2WDMQJHK14}
-```output 
+```output
 ```
 
 :nap: <!--