Refactor tags in JSON database, update RSS lastBuildDate, and optimize page rendering in JavaScript

Co-authored-by: Copilot <copilot@github.com>

Author: pedroth

database/db.json

@@ -339,7 +339,6 @@
         "c",
         "3d",
         "js",
-        "library",
         "project",
         "simulation",
         "visualization",
@@ -382,8 +381,6 @@
       "creationDate": "11/04/2021",
       "lastUpdateDate": "11/04/2021",
       "tags": [
-        "2d",
-        "3d",
         "NLP",
         "java",
         "geometry",

feed/rss.xml

@@ -4,7 +4,7 @@
         <description><![CDATA[Pedroth's Corner: Maths. Computer Science. Philosophy]]></description>
         <link>https://pedroth.github.io</link>
         <generator>Pedroth RSS Generator</generator>
-        <lastBuildDate>Tue, 05 May 2026 19:39:31 GMT</lastBuildDate>
+        <lastBuildDate>Fri, 08 May 2026 23:15:35 GMT</lastBuildDate>
         <atom:link href="https://pedroth.github.io/feed/rss.xml" rel="self" type="application/rss+xml"/>
         <language><![CDATA[en-US]]></language>
         <item>

index.js

@@ -170,6 +170,7 @@ function footer() {
     content = await mainModule.default();
   }
 
+  // important optimization, instead of re-rendering the whole page we just change the content of the page container, this way we keep the header and footer intact and avoid re-rendering them. 
   contentContainer
     .removeChildren()
     .append(content);

posts/BrownianMotion/BrownianMotion.zip

@@ -13,17 +13,20 @@ tags: [
  -->
 I made a simple [*Cellular Automaton*][automaton] application long time ago. Here each pixel represents a [cellular automaton][automaton] which is *alive* if is green or *dead* if is dark. The rules for the cellular automaton to be born and to survive are defined by the $S/B$ rules: 
 - $S$ defines counts of alive neighbors necessary for a cell to survive.
-- $B$ defines counts of alive neighbors necessary for a cell to be born. 
+- $B$ defines counts of alive neighbors necessary for a cell to be born.
+
+If cell is not born or does not survive, then it dies or remains dead.
 
 In this _app_ you can try several [cellular automata rules][rules]:
 
-- Maze: `12345/3`
-- 34 Life: `34/34`
-- Coral: `45678/3`
-- Coagulation: `2335678/378`
-- Pseudo life: `238/357`
-- Replicator: `1357/1357`
-- Total Random rules
+- Maze: `12345/3` *[key 1]*
+- 34 Life: `34/34` *[key 2]*
+- Coral: `45678/3` *[key 5]*
+- Coagulation: `235678/378` *[key 6]*
+- Replicator: `1357/1357` *[key 7]*
+- Gnarl: `1/1` *[key 8]*
+- Flakes: `	012345678/3` *[key 9]*
+- Total Random rules *[key 0]*
 
 ![*Cellular automaton* app video](https://www.youtube.com/watch?v=HO1TijJ5DFM)