CONV-033: Implement format normalization

[menvil]

Implements FileFormat::normalize() and UnsupportedFormatException. Closes red tests from CONV-032.

---

Summary by cubic

Adds file format normalization to standardize inputs and provide clear errors for unsupported types. Implements CONV-033 and resolves failing tests from CONV-032.

• New Features
  • Added FileFormat::normalize to sanitize extensions (trim, lowercase, strip leading dot) and map jpeg -> jpg.
  • Introduced UnsupportedFormatException with forInput helper for consistent error messages on unknown formats.

^{Written for commit acfc26e. Summary will update on new commits.}

Review in cubic

[coderabbitai]

Important

Review skipped

Auto reviews are limited based on label configuration.

🏷️ Required labels (at least one) (1)

• release

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: a434943c-851c-4ebd-9444-b0b49d5e00f0

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feature/CONV-033-implement-format-normalization

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}