[giuseppe-esposito-87]

🤖 This was written by an AI agent on behalf of @giuseppe-esposito-87 (claude-code/claude-opus-5-5).

Adds two Drupal roadmap items:

• DR25. Warn on unknown plugin IDs: report field types, widgets, formatters, constraints and createInstance() IDs that no plugin declares. Depends on DR10.
• DR26. Annotation class names: go-to-definition, hover and references for docblock annotations such as @Block and @Translation, which today are unknown tags.

DR24 is taken by #542, so these start at DR25.

Checklist

If applicable:

• I have updated CHANGELOG.md. Not applicable: roadmap only.
• I have updated the documentation (README.md, docs/, examples/)
• I have updated the config schema (config-schema.json). Not applicable: this PR adds or changes no setting.
• I have added/updated tests to cover my changes. Not applicable: roadmap only.
• If I used AI tools, I have reviewed what they produced and can explain
  the changes and why they are needed.
• I have read through any AI-generated text, especially documentation,
  the changelog, and other user-facing content, and removed or corrected
  anything inaccurate, unclear, or unnecessary.

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.

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[AJenbo]

Thanks