chore: Build mod in CI

.github/workflows/build.yml

@@ -0,0 +1,77 @@
+name: Build Mod
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 8
+        uses: actions/setup-java@v4
+        with:
+          java-version: "8"
+          distribution: "temurin"
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Cache Gradle packages
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+
+      - name: Build with Gradle
+        run: ./gradlew build
+
+      - name: Upload build artifacts
+        uses: actions/upload-artifact@v4
+        if: success()
+        with:
+          name: mod-jars
+          path: build/libs/*.jar
+          retention-days: 30
+
+      - name: Comment PR with artifact URLs
+        if: success() && github.event_name == 'pull_request'
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const artifacts = await github.rest.actions.listWorkflowRunArtifacts({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              run_id: context.runId,
+            });
+
+            let comment = '🦾 Fresh bends, straight out the oven, ready to be tested out:\n';
+            for (const artifact of artifacts.data.artifacts) {
+              const download_url = `https://github.com/${context.repo.owner}/${context.repo.repo}/actions/runs/${context.runId}/artifacts/${artifact.id}`;
+              comment += `- [${artifact.name}](${download_url})\n`;
+            }
+
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: comment,
+            });
+
+      - name: Upload build artifacts (on failure)
+        uses: actions/upload-artifact@v4
+        if: failure()
+        with:
+          name: build-logs
+          path: |
+            build/logs/
+            .gradle/
+          retention-days: 7

.gitignore

@@ -1,9 +1,10 @@
 /*
 
+!/.github
 !/build\.gradle
 !/gradle\.properties
 !/src
 !/misc
 !/gradle
-!gradlew
-!gradlew.bat
+!/gradlew
+!/gradlew.bat