Create CI pipeline and mvn wrapper

[fmazmz]

• Created mvn wrapper so we make sure all builds and pipelines are running the same maven distro / version.
• Added maven spotless plugin with simple config to start with.
• Added a simple CI workflow to run on PRs and on push to main branch.

Closes #1
Closes #2

Summary by CodeRabbit

• Chores
  • Added CI workflow to run tests and code-quality checks on PRs and main branch updates.
  • Added Maven wrapper tooling to standardize builds across environments (includes Windows and Unix bootstraps).
  • Integrated automated code formatting and import cleanup into the build process.
  • Added project editor configuration to enforce consistent whitespace, encoding, and line endings.

[coderabbitai]

📝 Walkthrough

Walkthrough

Adds a Maven wrapper (Unix + Windows), Maven wrapper config, project editorconfig, Spotless plugin, and a GitHub Actions CI workflow that checks out code, sets up Java 25, runs Maven tests via the wrapper, and enforces formatting with Spotless.

Changes

Cohort / File(s)	Summary
CI Workflow .github/workflows/ci.yml	Adds GitHub Actions workflow triggered on pushes to main and pull requests; sets up Ubuntu runner, configures Temurin Java 25, uses Maven caching, runs ./mvnw -B test and ./mvnw -B spotless:check.
Maven Wrapper Scripts mvnw, mvnw.cmd, .mvn/wrapper/maven-wrapper.properties	Adds Unix and Windows Maven wrapper scripts and properties targeting Maven 3.8.7 with download, extraction, checksum validation, OS-specific handling, and caching logic.
Build & Formatting pom.xml, .editorconfig	Adds spotless-maven-plugin (v2.43.0) configuration for Java formatting and an .editorconfig to enforce UTF-8, LF, 4-space indentation (YAML override 2).

Sequence Diagram(s)

sequenceDiagram
    participant GitHubActions
    participant Runner as Ubuntu Runner
    participant Repo as Repository (mvnw + pom.xml)
    participant Maven as Maven (via mvnw)
    participant Spotless as Spotless Plugin

    GitHubActions->>Runner: start workflow (push/PR)
    Runner->>Repo: checkout code
    Runner->>Runner: setup Java 25 (Temurin)
    Runner->>Repo: run `./mvnw -B test`
    Repo->>Maven: mvnw bootstraps/ensures Maven distro
    Maven->>Repo: execute tests
    Runner->>Repo: run `./mvnw -B spotless:check`
    Maven->>Spotless: run formatting checks
    Spotless-->>Runner: report success/failure
    Runner-->>GitHubActions: workflow result

Loading

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Poem

🐰 I fetched the wrappers, tuned the build song,
CI hums softly and tests run along,
Spotless trims whiskers and lines that stray,
Cross-platform paws hop the dev way,
Pipelines now cheer — a carrot for play!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Create CI pipeline and mvn wrapper' directly and clearly summarizes the main changes: CI workflow setup and Maven wrapper configuration.
Linked Issues check	✅ Passed	The PR addresses the linked issue #1 by implementing a CI pipeline with Maven wrapper as required, including spotless integration.
Out of Scope Changes check	✅ Passed	All changes align with the stated objective: CI workflow, Maven wrapper setup, and supporting configuration files (.editorconfig) are directly related to issue #1.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch workflow/issue1-create-ci-pipeline-and-mvn-wrapper

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[coderabbitai]

Actionable comments posted: 2

🤖 Fix all issues with AI agents

In @.github/workflows/ci.yml:
- Around line 26-27: The CI workflow step currently runs "./mvnw -B
spotless:checks" and the step name is "Run spotless checks"; change the Maven
goal to the singular "spotless:check" (update the run value) to match the
pom.xml expectation and ensure the workflow file ends with a trailing newline
(add a final newline at EOF) so POSIX tools and git hooks are satisfied.

In `@pom.xml`:
- Around line 121-137: The CI uses the wrong Spotless Maven goal name—replace
any use of "spotless:checks" with the correct singular goal "spotless:check" in
the GitHub Actions CI workflow step that invokes Maven; this aligns with the
Spotless plugin (com.diffplug.spotless:spotless-maven-plugin) declared in the
POM and will prevent the "Unknown lifecycle phase" failure.

🧹 Nitpick comments (1)

.github/workflows/ci.yml (1)

9-11: Consider adding explicit permissions for security hardening.

Adding explicit permissions follows the principle of least privilege and prevents potential security issues if the GITHUB_TOKEN default permissions change.

Suggested addition after line 8

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: read
    steps:

[kristinaxm]

great