Move to TerminalMC and update to mc1.21

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug Report
+description: "For reporting bugs and other defects"
+labels:
+  - S/needs-triage
+body:
+  - type: markdown
+    attributes:
+      value: >-
+        **This issue tracker is not intended for support requests!** Unless you are certain that 
+        you have found a defect, and you are able to point to where the problem is, you should not 
+        open an issue. For general support or if you're unsure, please ask on 
+        [Discord](https://terminalmc.dev/discord).
+        <br><br>
+        Additionally, please make check the following:
+        
+        - **Have you used the [search tool](https://github.com/TerminalMC/EffectTimerPlus/issues) to 
+        check whether your issue has already been reported?** If it has been, consider adding more 
+        information to the existing issue instead.
+        
+        - **Have you determined the minimum set of instructions to reproduce the issue?** If your 
+        problem only occurs with other mods installed, then you should narrow down exactly which 
+        mods are causing the issue. Please do not provide your entire list of mods and expect that 
+        we will be able to figure out the problem.
+  - type: input
+    id: mod-version
+    attributes:
+      label: Mod Version
+      description: >-
+        Specify the version(s) of the mod in which you have identified this issue.
+        
+        **Example:** `v1.2.0-Fabric-1.20.6`
+    validations:
+      required: true
+  - type: input
+    id: mod-loader
+    attributes:
+      label: Mod Loader
+      description: >-
+        Specify the mod loader(s) in which you have identified this issue.
+
+        **Example:** `Fabric`
+    validations:
+      required: true
+  - type: input
+    id: mc-version
+    attributes:
+      label: Minecraft Version
+      description: >-
+        Specify the Minecraft version(s) in which you have identified this issue.
+
+        **Example:** `1.20.6`
+    validations:
+      required: true
+  - type: textarea
+    id: description
+    attributes:
+      label: Bug Description
+      description: >-
+        Describe in detail the issue you are experiencing. The description should explain what 
+        behavior you were expecting, and why you believe the issue to be a bug. If the issue you 
+        are reporting only occurs with specific mods installed, then provide the name and version 
+        of each mod.
+
+        **Hint:** If you have any screenshots, videos, or other information that you feel is 
+        necessary to explain the issue, you can attach them here.
+    validations:
+      required: true
+  - type: textarea
+    id: description-reproduction-steps
+    attributes:
+      label: Reproduction Steps
+      description: >-
+        Describe the procedure required to reproduce this bug. Make sure your instructions are as 
+        clear and concise as possible, because other people will need to be able to follow your 
+        guide in order to re-create the issue.
+        
+        **Hint:**  A common way to fill this section out is to write a step-by-step guide.
+    validations:
+      required: true
+  - type: textarea
+    id: log-file
+    attributes:
+      label: Log File (optional)
+      description: >-
+        **Hint:** You can usually find the log files within the folder `.minecraft/logs`. Generally
+        you will want the `latest.log` file, since that file belongs to the last played session of 
+        the game.
+      placeholder: >-
+        Drag-and-drop the log file here.
+  - type: textarea
+    id: crash-report-file
+    attributes:
+      label: Crash Report (optional)
+      description: >-
+        **Hint:** You can usually find crash reports (with their date and time) in the folder 
+        `.minecraft/crash-reports`.
+      placeholder: >-
+        Drag-and-drop the crash report file here.

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: true
+contact_links:
+  - name: Support enquiry, Question or Discussion
+    url: https://terminalmc.dev/discord
+    about: For any issue that isn't specifically a bug report or feature request, please use Discord

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: Feature Request
+description: "For requesting new features or improvements"
+labels:
+  - S/needs-triage
+  - T/enhancement
+body:
+  - type: markdown
+    attributes:
+      value: >-
+        This form is for requesting new features or improvements, and should not be used for bug 
+        reports, port requests, or other issues.
+  - type: markdown
+    attributes:
+      value: >-
+        Make sure you have used the [search tool](https://github.com/TerminalMC/EffectTimerPlus/issues) 
+        to see if a similar request already exists (either open or closed).
+  - type: textarea
+    id: description
+    attributes:
+      label: Request Description
+      description: >-
+        Use this section to describe the feature or improvement that you are looking for. The 
+        description should explain what problem you are trying to solve, what alternatives you have
+        tried, and describe clearly and concisely what you would like changed.

.github/labels.yml

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+- name: E/duplicate
+  color: 'BFD4F2'
+  description: 'Closed: Same as another'
+  aliases: []
+
+- name: E/external
+  color: 'BFD4F2'
+  description: 'Closed: External issue'
+  aliases: []
+
+- name: E/invalid
+  color: 'BFD4F2'
+  description: 'Closed: Not an issue'
+  aliases: []
+
+- name: E/no-action
+  color: 'BFD4F2'
+  description: 'Closed: Not actionable or inadequate information'
+  aliases: []
+
+- name: E/wontfix
+  color: 'BFD4F2'
+  description: 'Closed: Will not be worked on'
+  aliases: []
+
+
+
+- name: P/high
+  color: 'B60205'
+  description: 'Priority: High, for immediate attention'
+  aliases: []
+
+- name: P/low
+  color: '006B75'
+  description: 'Priority: Low, not time-sensitive'
+  aliases: []
+
+- name: P/medium
+  color: '36210B'
+  description: 'Priority: Medium, time-sensitive but not urgent'
+  aliases: []
+
+
+
+- name: S/accepted
+  color: '0E8A16'
+  description: 'Status: Request accepted'
+  aliases: []
+
+- name: S/available
+  color: '006B75'
+  description: 'Status: Available for community contribution'
+  aliases: []
+
+- name: S/blocked
+  color: '97988B'
+  description: 'Status: Blocked by another event'
+  aliases: []
+
+- name: S/fixed
+  color: '0E8A16'
+  description: 'Status: Fixed'
+  aliases: []
+
+- name: S/info-needed
+  color: 'FBCA04'
+  description: 'Status: Awaiting further information'
+  aliases: []
+
+- name: S/in-progress
+  color: '0052CC'
+  description: 'Status: Assigned and in progress'
+  aliases: []
+
+- name: S/needs-triage
+  color: '36210B'
+  description: 'Status: Needs triage'
+  aliases: []
+
+
+
+- name: T/addition
+  color: '006B75'
+  description: 'Type: New feature'
+  aliases: []
+
+- name: T/bug
+  color: 'D93F0B'
+  description: 'Type: Bug'
+  aliases: []
+
+- name: T/compat
+  color: '36210B'
+  description: 'Type: Compatibility'
+  aliases: []
+
+- name: T/enhancement
+  color: '0052CC'
+  description: 'Type: Enhancement or optimization'
+  aliases: []
+
+- name: T/fix
+  color: '0E8A16'
+  description: 'Type: Issue fix'
+  aliases: []
+
+- name: T/port
+  color: '5319E7'
+  description: 'Type: Upgrade or downgrade game version'
+  aliases: []
+
+- name: T/security
+  color: 'B60205'
+  description: 'Type: Security issue'
+  aliases: []

.github/workflows/check-build.yml

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+# Builds the project on Linux and Windows as a partial defence against bad commits
+name: Check Build
+
+on:
+  push:
+    paths: [
+      '**src/**',
+      '**/*gradle*',
+      LICENSE
+    ]
+  pull_request:
+    paths: [
+      '**src/**',
+      '**/*gradle*',
+      LICENSE
+    ]
+  workflow_dispatch:
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        java: [21]
+        os: [ubuntu-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Validate Gradle wrapper
+        uses: gradle/wrapper-validation-action@v3
+      - name: Setup JDK ${{ matrix.java }}
+        uses: actions/setup-java@v4
+        with:
+          distribution: zulu
+          java-version: ${{ matrix.java }}
+      - name: Make Gradle wrapper executable
+        if: ${{ runner.os != 'Windows' }}
+        run: chmod +x ./gradlew
+      - name: Build
+        run: ./gradlew build --stacktrace
+      - name: Capture build artifacts
+        if: ${{ runner.os == 'Linux' && matrix.java == '21' }}
+        uses: actions/upload-artifact@v4
+        with:
+          name: Artifacts
+          path: build/libs/

.github/workflows/release.yml

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+# Builds the project and publishes the artifacts to GitHub and Modrinth
+# Requires GITHUB_TOKEN to have write permissions; if not, replace it with a custom token
+# Requires a Modrinth PAT MODRINTH_TOKEN
+name: Release
+
+on: [workflow_dispatch]
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    strategy:
+      matrix:
+        java: [21]
+        os: [ubuntu-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Validate Gradle wrapper
+        uses: gradle/wrapper-validation-action@v3
+      - name: Setup JDK ${{ matrix.java }}
+        uses: actions/setup-java@v4
+        with:
+          distribution: zulu
+          java-version: ${{ matrix.java }}
+      - name: Make Gradle wrapper executable
+        if: ${{ runner.os != 'Windows' }}
+        run: chmod +x ./gradlew
+      - name: Build
+        run: ./gradlew build neoforge:githubRelease neoforge:modrinth fabric:githubRelease fabric:modrinth --stacktrace
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          MODRINTH_TOKEN: ${{ secrets.MODRINTH_TOKEN }}
+      - name: Capture build artifacts
+        if: ${{ runner.os == 'Linux' && matrix.java == '21' }}
+        uses: actions/upload-artifact@v4
+        with:
+          name: Artifacts
+          path: build/libs/

.github/workflows/sync-labels.yml

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+# Synchronizes the repo's labels with labels.yml
+# Requires GITHUB_TOKEN to have write permissions; if not, replace it with a custom token
+name: Sync Labels
+
+on:
+  push:
+    paths: ['.github/labels.yml', '.github/workflows/sync-labels.yml']
+  workflow_dispatch:
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          sparse-checkout: |
+            .github/labels.yml
+          sparse-checkout-cone-mode: false
+      - name: Setup NodeJS
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+      - run: npx github-label-sync -a '${{ secrets.GITHUB_TOKEN }}' -l '.github/labels.yml' ${{ github.repository }}