@@ -2,7 +2,7 @@ FROM debian:bookworm-slim AS base
 
 # Copy JDK from Eclipse Temurin
 ENV JAVA_HOME=/opt/java/openjdk
-COPY --from=eclipse-temurin:21-jdk $JAVA_HOME $JAVA_HOME
+COPY --from=eclipse-temurin:25-jdk $JAVA_HOME $JAVA_HOME
 ENV PATH="${JAVA_HOME}/bin:${PATH}"
 
 # Install system dependencies needed for development
 
@@ -53,8 +53,8 @@ jobs:
           git checkout ${{ github.sha }}
       - name: Setup Java
         run: |
-          echo "JAVA_HOME=$JAVA_HOME_21_X64" >> $GITHUB_ENV
-          echo "$JAVA_HOME_21_X64/bin" >> $GITHUB_PATH
+          echo "JAVA_HOME=$JAVA_HOME_25_X64" >> $GITHUB_ENV
+          echo "$JAVA_HOME_25_X64/bin" >> $GITHUB_PATH
       - name: Setup pnpm
         run: npm install -g pnpm@10.20.0
       - name: Install node deps
@@ -87,8 +87,8 @@ jobs:
           git checkout ${{ github.sha }}
       - name: Setup Java
         run: |
-          echo "JAVA_HOME=$JAVA_HOME_21_X64" >> $GITHUB_ENV
-          echo "$JAVA_HOME_21_X64/bin" >> $GITHUB_PATH
+          echo "JAVA_HOME=$JAVA_HOME_25_X64" >> $GITHUB_ENV
+          echo "$JAVA_HOME_25_X64/bin" >> $GITHUB_PATH
       - name: Build fat jar
         run: ./gradlew fatJar
       - name: Install sshpass
@@ -119,8 +119,8 @@ jobs:
           git checkout ${{ github.sha }}
       - name: Setup Java
         run: |
-          echo "JAVA_HOME=$JAVA_HOME_21_X64" >> $GITHUB_ENV
-          echo "$JAVA_HOME_21_X64/bin" >> $GITHUB_PATH
+          echo "JAVA_HOME=$JAVA_HOME_25_X64" >> $GITHUB_ENV
+          echo "$JAVA_HOME_25_X64/bin" >> $GITHUB_PATH
       - name: Check grammar
         run: ./gradlew generateGrammarSource
       - name: Check main style
@@ -143,8 +143,8 @@ jobs:
           git checkout ${{ github.sha }}
       - name: Setup Java
         run: |
-          echo "JAVA_HOME=$JAVA_HOME_21_X64" >> $GITHUB_ENV
-          echo "$JAVA_HOME_21_X64/bin" >> $GITHUB_PATH
+          echo "JAVA_HOME=$JAVA_HOME_25_X64" >> $GITHUB_ENV
+          echo "$JAVA_HOME_25_X64/bin" >> $GITHUB_PATH
       - name: Run tests
         run: ./gradlew test
   runEngineLocal:
@@ -163,8 +163,8 @@ jobs:
           git checkout ${{ github.sha }}
       - name: Setup Java
         run: |
-          echo "JAVA_HOME=$JAVA_HOME_21_X64" >> $GITHUB_ENV
-          echo "$JAVA_HOME_21_X64/bin" >> $GITHUB_PATH
+          echo "JAVA_HOME=$JAVA_HOME_25_X64" >> $GITHUB_ENV
+          echo "$JAVA_HOME_25_X64/bin" >> $GITHUB_PATH
       - name: Download fatJar
         run: |
           mkdir -p build/libs
@@ -201,8 +201,8 @@ jobs:
           git checkout ${{ github.sha }}
       - name: Setup Java
         run: |
-          echo "JAVA_HOME=$JAVA_HOME_21_X64" >> $GITHUB_ENV
-          echo "$JAVA_HOME_21_X64/bin" >> $GITHUB_PATH
+          echo "JAVA_HOME=$JAVA_HOME_25_X64" >> $GITHUB_ENV
+          echo "$JAVA_HOME_25_X64/bin" >> $GITHUB_PATH
       - name: Download fatJar
         run: |
           mkdir -p build/libs
@@ -242,8 +242,8 @@ jobs:
           git checkout ${{ github.sha }}
       - name: Setup Java
         run: |
-          echo "JAVA_HOME=$JAVA_HOME_21_X64" >> $GITHUB_ENV
-          echo "$JAVA_HOME_21_X64/bin" >> $GITHUB_PATH
+          echo "JAVA_HOME=$JAVA_HOME_25_X64" >> $GITHUB_ENV
+          echo "$JAVA_HOME_25_X64/bin" >> $GITHUB_PATH
       - name: Build war
         run: ./gradlew warUnversioned
       - name: Install sshpass
@@ -269,8 +269,8 @@ jobs:
           git checkout ${{ github.sha }}
       - name: Setup Java
         run: |
-          echo "JAVA_HOME=$JAVA_HOME_21_X64" >> $GITHUB_ENV
-          echo "$JAVA_HOME_21_X64/bin" >> $GITHUB_PATH
+          echo "JAVA_HOME=$JAVA_HOME_25_X64" >> $GITHUB_ENV
+          echo "$JAVA_HOME_25_X64/bin" >> $GITHUB_PATH
       - name: Setup pnpm
         run: npm install -g pnpm@10.20.0
       - name: Download war
@@ -307,8 +307,8 @@ jobs:
           git checkout ${{ github.sha }}
       - name: Setup Java
         run: |
-          echo "JAVA_HOME=$JAVA_HOME_21_X64" >> $GITHUB_ENV
-          echo "$JAVA_HOME_21_X64/bin" >> $GITHUB_PATH
+          echo "JAVA_HOME=$JAVA_HOME_25_X64" >> $GITHUB_ENV
+          echo "$JAVA_HOME_25_X64/bin" >> $GITHUB_PATH
       - name: Generate Javadoc
         run: ./gradlew javadoc
       - name: Install sshpass
@@ -419,8 +419,8 @@ jobs:
           git checkout ${{ github.sha }}
       - name: Setup Java
         run: |
-          echo "JAVA_HOME=$JAVA_HOME_21_X64" >> $GITHUB_ENV
-          echo "$JAVA_HOME_21_X64/bin" >> $GITHUB_PATH
+          echo "JAVA_HOME=$JAVA_HOME_25_X64" >> $GITHUB_ENV
+          echo "$JAVA_HOME_25_X64/bin" >> $GITHUB_PATH
       - name: Setup pnpm
         run: npm install -g pnpm@10.20.0
       - name: Install SSH client and sshpass
@@ -605,8 +605,8 @@ jobs:
           git checkout ${{ github.sha }}
       - name: Setup Java
         run: |
-          echo "JAVA_HOME=$JAVA_HOME_21_X64" >> $GITHUB_ENV
-          echo "$JAVA_HOME_21_X64/bin" >> $GITHUB_PATH
+          echo "JAVA_HOME=$JAVA_HOME_25_X64" >> $GITHUB_ENV
+          echo "$JAVA_HOME_25_X64/bin" >> $GITHUB_PATH
       - name: Publish
         env:
           USERNAME: ${{ github.actor }}
 
@@ -104,7 +104,7 @@ Please reach out if you have further questions about these guidelines or want to
 ## Scope
 There are some limitations of scope for this project:
 
- - The Java engine must remain compatible with Java 21+ to support TeaVM compilation to WebAssembly but earlier versions are not guaranteed to be supported.
+ - The Java engine must remain compatible with Java 25+ to support TeaVM compilation to WebAssembly but earlier versions are not guaranteed to be supported.
  - Breaking changes to the QubecTalk language syntax should be discussed in an issue before implementation and require community input.
  - We must maintain both the browser-based application and standalone JAR/Docker execution paths but other execution modalities are currently out of scope.
  - Energy consumption can be modeled but energy mix for secondary emissions is currently considered out of scope.
 
@@ -12,7 +12,7 @@ Kigali Sim is organized into three main components and most have additional READ
 
 The **Java Engine** (`engine` directory) provides the primary computational mechanism for running simulations. There are different entrypoints depending on how Kiglai Sim is running like via WASM or JVM. That said, developers may wish to review the [Engine JavaDoc](https://kigalisim.org/guide/javadoc/org/kigalisim/engine/Engine.html). The **ECMAScript Editor** (`editor` directory) may be explored via the [Editor JSDoc](https://kigalisim.org/guide/jsdoc/). At a glance:
 
-- Core simulation engine built with Java 21+
+- Core simulation engine built with Java 25+
 - Uses ANTLR4 for parsing the QubecTalk domain specific language (DSL)
 - Contains the authoritative QubecTalk.g4 grammar file
 - Compiled to WebAssembly using TeaVM for browser execution
@@ -37,7 +37,7 @@ Both dev containers and local setup are supported, per developer preference.
 
 The project includes a dev container which is compatible with IntelliJ, VS Code, and GitHub Codespaces. As described in `.devcontainer`, this provides a reproducible development environment with dependencies required for most development activities pre-installed. Indeed, this guide was written from a dev container! It uses:
 
-- Debian 12 (bookworm-slim) with Eclipse Temurin JDK 21
+- Debian 12 (bookworm-slim) with Eclipse Temurin JDK 25
 - Node.js 18.x LTS (official Debian package)
 - pnpm 10.20.0 (installed via npm)
 - Chromium browser (official Debian package) for running tests
@@ -56,7 +56,7 @@ The container configuration prioritizes security by using only official package
 ### Local Setup
 You are very welcome to set up your own environment outside of a pre-prepared container. You will need the following:
 
-- Java JDK 21 or higher (please use only OpenJDK or similar, see [Adoptium](https://adoptium.net/))
+- Java JDK 25 or higher (please use only OpenJDK or similar, see [Adoptium](https://adoptium.net/))
 - Node.js 18.x and pnpm
 - Python 3.x (for local development server)
 
 
@@ -1,5 +1,5 @@
-# Use Eclipse Temurin JDK 21 as base image
-FROM eclipse-temurin:21-jre
+# Use Eclipse Temurin JDK 25 as base image
+FROM eclipse-temurin:25-jre
 
 # Install wget for downloading the jar file
 RUN apt-get update && apt-get install -y wget
 
@@ -1,7 +1,7 @@
 # Kigali Sim
 Open source engine for simulating substances, applications, and policies relevant to the Montreal Protocol and the Kigali Amendment.
 
-[![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/#active) [![BSD Licensed](https://img.shields.io/badge/License-BSD_3--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause) [![Build](https://github.com/SchmidtDSE/kigali-sim/actions/workflows/build.yaml/badge.svg?branch=deploy)](https://github.com/SchmidtDSE/kigali-sim/actions/workflows/build.yaml) ![Temurin 21 or higher](https://img.shields.io/badge/Java-Temurin%2021%2B-blue) [![status](https://joss.theoj.org/papers/eafc95ac66aae284563f36fa60f0261d/status.svg)](https://joss.theoj.org/papers/eafc95ac66aae284563f36fa60f0261d)
+[![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/#active) [![BSD Licensed](https://img.shields.io/badge/License-BSD_3--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause) [![Build](https://github.com/SchmidtDSE/kigali-sim/actions/workflows/build.yaml/badge.svg?branch=deploy)](https://github.com/SchmidtDSE/kigali-sim/actions/workflows/build.yaml) ![Temurin 25 or higher](https://img.shields.io/badge/Java-Temurin%2025%2B-blue) [![status](https://joss.theoj.org/papers/eafc95ac66aae284563f36fa60f0261d/status.svg)](https://joss.theoj.org/papers/eafc95ac66aae284563f36fa60f0261d)
 
 <br>
 
@@ -179,7 +179,7 @@ This can be run using the editor tab at https://kigalisim.org/ or locally via `j
 Developers can continue their work by going to the [User Guide](https://kigalisim.org/guide/) which had information on other features. See also the [formal QubecTalk language specification](https://kigalisim.org/guide/qubectalk.pdf).
 
 ### LLM assistants
-If desired, AI coding assistants or chatbots can help in using Kigali Sim. We implement the [llms.txt specification](https://llmstxt.org), a standard that allows users to bring their own LLM assistants to the tool. Direct your AI to read `https://kigalisim.org/llms-full.txt?v=20260826` and / or `https://kigalisim.org/llms.txt?v=20260826`.
+If desired, AI coding assistants or chatbots can help in using Kigali Sim. We implement the [llms.txt specification](https://llmstxt.org), a standard that allows users to bring their own LLM assistants to the tool. Direct your AI to read `https://kigalisim.org/llms-full.txt?v=20261025` and / or `https://kigalisim.org/llms.txt?v=20261025`.
 
 <br>
 
 
@@ -51,10 +51,10 @@ <h2>Preparing for AI</h2>
           In this tutorial series, we have used <a href="https://claude.ai/">Claude</a>. However, in practice, most AI assistants can help with Kigali Sim using a standard called <a href="https://llmstxt.org/">llms.txt</a>. So, to get AI ready to go, please create a new chat session. Then, tell it to look up information about Kigali Sim through a message like this:
         </p>
 
-        <pre class="prompt-code"><code>Hello! I would like help with building a Kigali Sim simulation. Please read https://kigalisim.org/llms-full.txt?v=20260826 to learn more. Please stick to only features compatible with the UI editor.</code></pre>
+        <pre class="prompt-code"><code>Hello! I would like help with building a Kigali Sim simulation. Please read https://kigalisim.org/llms-full.txt?v=20261025 to learn more. Please stick to only features compatible with the UI editor.</code></pre>
 
         <p>
-          Need a little cheat? <a href="tutorial_02.qta" download>Download the Tutorial 2</a> file here. Also, for more capable assistants like Claude, this is enough. However, some assistants cannot access the full internet or won't know how to work with this kind of file out of the box. If your assistant is having issues, instead, attach the <a href="https://kigalisim.org/llms-full.txt?v=20260826" download>Kigali Sim llms-full.txt</a> file as an attachment!
+          Need a little cheat? <a href="tutorial_02.qta" download>Download the Tutorial 2</a> file here. Also, for more capable assistants like Claude, this is enough. However, some assistants cannot access the full internet or won't know how to work with this kind of file out of the box. If your assistant is having issues, instead, attach the <a href="https://kigalisim.org/llms-full.txt?v=20261025" download>Kigali Sim llms-full.txt</a> file as an attachment!
         </p>
 
         <p>
 
@@ -61,10 +61,10 @@ <h2>Preparing for AI</h2>
           <strong>If you are new to the AI</strong> or just want to start fresh, create a new chat session. Then, tell it to look up information about Kigali Sim through a message like this:
         </p>
 
-        <pre class="prompt-code"><code>Hello! I would like help with building a Kigali Sim simulation. Please read https://kigalisim.org/llms-full.txt?v=20260826 to learn more. Please stick to only features compatible with the UI editor.</code></pre>
+        <pre class="prompt-code"><code>Hello! I would like help with building a Kigali Sim simulation. Please read https://kigalisim.org/llms-full.txt?v=20261025 to learn more. Please stick to only features compatible with the UI editor.</code></pre>
 
         <p>
-          Need a little cheat? <a href="tutorial_03.qta" download>Download the Tutorial 3</a> file here. Also, for more capable assistants like Claude, this is enough. However, some assistants cannot access the full internet or won't know how to work with this kind of file out of the box. If your assistant is having issues, instead, attach the <a href="https://kigalisim.org/llms-full.txt?v=20260826" download>Kigali Sim llms-full.txt</a> file as an attachment!
+          Need a little cheat? <a href="tutorial_03.qta" download>Download the Tutorial 3</a> file here. Also, for more capable assistants like Claude, this is enough. However, some assistants cannot access the full internet or won't know how to work with this kind of file out of the box. If your assistant is having issues, instead, attach the <a href="https://kigalisim.org/llms-full.txt?v=20261025" download>Kigali Sim llms-full.txt</a> file as an attachment!
         </p>
 
         <p>
 
@@ -55,10 +55,10 @@ <h2>Preparing for AI</h2>
           In this case, let's create a new chat session. Then, tell it to look up information about Kigali Sim through a message like this:
         </p>
 
-        <pre class="prompt-code"><code>Hello! I would like help with building a Kigali Sim simulation. Please read https://kigalisim.org/llms-full.txt?v=20260826 to learn more. Please stick to only features compatible with the UI editor.</code></pre>
+        <pre class="prompt-code"><code>Hello! I would like help with building a Kigali Sim simulation. Please read https://kigalisim.org/llms-full.txt?v=20261025 to learn more. Please stick to only features compatible with the UI editor.</code></pre>
 
         <p>
-          Need a little cheat? <a href="tutorial_05.qta" download>Download the Tutorial 5</a> file here. Also, for more capable assistants like Claude, this is enough. However, some assistants cannot access the full internet or won't know how to work with this kind of file out of the box. If your assistant is having issues, instead, attach the <a href="https://kigalisim.org/llms-full.txt?v=20260826" download>Kigali Sim llms-full.txt</a> file as an attachment!
+          Need a little cheat? <a href="tutorial_05.qta" download>Download the Tutorial 5</a> file here. Also, for more capable assistants like Claude, this is enough. However, some assistants cannot access the full internet or won't know how to work with this kind of file out of the box. If your assistant is having issues, instead, attach the <a href="https://kigalisim.org/llms-full.txt?v=20261025" download>Kigali Sim llms-full.txt</a> file as an attachment!
         </p>
 
         <p>