Add Kotlin CI workflow and diagnostics script

Co-authored-by: Mte90 <403283+Mte90@users.noreply.github.com>

Author: Copilot

.github/workflows/kotlin-ci.yml

@@ -0,0 +1,93 @@
+name: "CI — Build Kotlin plugin on PR commits"
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+  push:
+    branches: [ "main" ]
+
+jobs:
+  build-kotlin-plugin:
+    name: "Build (matrix: Java ${{ matrix.java-version }})"
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java-version: [11, 17]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up JDK ${{ matrix.java-version }}
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: ${{ matrix.java-version }}
+
+      - name: Cache Gradle
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+            .gradle
+          key: gradle-${{ matrix.java-version }}-${{ hashFiles('**/*.gradle*','**/gradle-wrapper.properties') }}
+          restore-keys: |
+            gradle-${{ matrix.java-version }}-
+
+      - name: Make wrapper executable
+        run: chmod +x ide-plugins/gradlew
+
+      - name: Print Gradle info (for debugging)
+        working-directory: ide-plugins
+        run: ./gradlew --no-daemon --version
+
+      - name: Run diagnostics script (prints wrapper and kotlin plugin references)
+        run: |
+          mkdir -p out
+          scripts/ci/inspect_gradle_kotlin_versions.sh > out/ci-diagnostics.txt || true
+      - name: Upload diagnostics
+        uses: actions/upload-artifact@v4
+        with:
+          name: ci-diagnostics
+          path: out/ci-diagnostics.txt
+
+      - name: Full build with stacktrace (capture to file)
+        working-directory: ide-plugins
+        env:
+          GRADLE_OPTS: "-Dorg.gradle.jvmargs=-Xmx3g"
+        run: |
+          set -o pipefail
+          ./gradlew build --no-daemon --stacktrace 2>&1 | tee gradle-build.log || true
+      - name: Upload build log
+        uses: actions/upload-artifact@v4
+        with:
+          name: gradle-build-log
+          path: ide-plugins/gradle-build.log
+
+      - name: Build Kotlin plugin subproject if present
+        working-directory: ide-plugins
+        run: |
+          set -o pipefail
+          if ./gradlew :kotlin:tasks --dry-run &>/dev/null; then
+            echo "Detected :kotlin subproject -> building it"
+            ./gradlew :kotlin:build --no-daemon --stacktrace 2>&1 | tee kotlin-subproject-build.log || true
+            echo "Uploading kotlin-subproject-build.log"
+            ls -la kotlin-subproject-build.log || true
+          elif ./gradlew :plugin:kotlin:tasks --dry-run &>/dev/null; then
+            echo "Detected :plugin:kotlin subproject -> building it"
+            ./gradlew :plugin:kotlin:build --no-daemon --stacktrace 2>&1 | tee kotlin-subproject-build.log || true
+          else
+            echo "No explicit kotlin plugin subproject found; running assemble on all projects"
+            ./gradlew assemble --no-daemon --stacktrace 2>&1 | tee assemble.log || true
+          fi
+      - name: Upload kotlin-subproject/build logs if present
+        uses: actions/upload-artifact@v4
+        with:
+          name: kotlin-subproject-logs
+          path: |
+            ide-plugins/kotlin-subproject-build.log
+            ide-plugins/assemble.log
+            || true

scripts/ci/inspect_gradle_kotlin_versions.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+set -eu
+
+# Print Gradle wrapper distribution URL
+if [ -f ide-plugins/gradle/wrapper/gradle-wrapper.properties ]; then
+  echo "== gradle-wrapper.properties =="
+  grep -i distributionUrl ide-plugins/gradle/wrapper/gradle-wrapper.properties || true
+  echo
+fi
+
+# Print gradle.properties if present
+if [ -f ide-plugins/gradle.properties ]; then
+  echo "== gradle.properties =="
+  cat ide-plugins/gradle.properties || true
+  echo
+fi
+
+# Search for Kotlin Gradle plugin references
+echo "== Kotlin plugin references (searching for kotlin-gradle-plugin and org.jetbrains.kotlin) =="
+grep -R --line-number --color=never "kotlin-gradle-plugin" ide-plugins/ || true
+grep -R --line-number --color=never "org.jetbrains.kotlin" ide-plugins/ || true
+
+# Print build.gradle(.kts) files header lines to show plugin versions where declared
+for f in $(git ls-files "ide-plugins/*.gradle" "ide-plugins/*.gradle.kts" 2>/dev/null || true); do
+  echo "---- $f ----"
+  sed -n '1,200p' "$f" | sed -n '1,60p'
+  echo
+done
+
+# Print settings.gradle(.kts)
+for f in $(git ls-files "ide-plugins/settings.gradle" "ide-plugins/settings.gradle.kts" 2>/dev/null || true); do
+  echo "---- $f ----"
+  sed -n '1,200p' "$f" | sed -n '1,60p'
+  echo
+done
+
+# Print the kotlin plugin versions extracted via a rough regex
+echo "== Extracted candidate versions =="
+grep -R --line-number --color=never "kotlin-gradle-plugin[:=][^\n]*" ide-plugins/ || true