refactor: simplify pre-commit workflow and update welcome message

Author: Bit-Maximum

.github/workflows/pre-commit.yml

@@ -11,11 +11,6 @@ jobs:
     name: Pre-commit Checks (JDK ${{ matrix.java-version }})
     runs-on: ubuntu-latest
 
-    strategy:
-      matrix:
-        java-version: [21, 25]
-      fail-fast: false
-
     permissions:
       contents: read
       pull-requests: write
@@ -27,11 +22,11 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Set up JDK ${{ matrix.java-version }}
+      - name: Set up JDK
         uses: actions/setup-java@v5
         with:
           distribution: temurin
-          java-version: ${{ matrix.java-version }}
+          java-version: 25
           cache: gradle
 
       - name: Setup Gradle
@@ -82,13 +77,13 @@ jobs:
                 issue_number: context.issue.number,
                 owner: context.repo.owner,
                 repo: context.repo.repo,
-                body: `❌ Pre-commit checks failed for JDK ${{ matrix.java-version }}. Please check the workflow run for details.`
+                body: `❌ Pre-commit checks failed for JDK 25. Please check the workflow run for details.`
               });
             } else if (result === 'success') {
               github.rest.issues.createComment({
                 issue_number: context.issue.number,
                 owner: context.repo.owner,
                 repo: context.repo.repo,
-                body: `✅ Pre-commit checks passed for JDK ${{ matrix.java-version }}!`
+                body: `✅ Pre-commit checks passed!`
               });
             }

src/main/java/org/example/Main.java

@@ -13,7 +13,7 @@ private Main() {}
 
     static void main() {
 
-        IO.println(String.format("Hello and welcome!"));
+        IO.println(String.format("Hello, welcome!"));
 
         for (int i = 1; i <= 5; i++) {
             IO.println("i = " + i);