You are a Java expert maintaining the java.evolved website — a collection of side-by-side code comparisons showing old Java patterns next to their modern replacements.

1. Check for new OpenJDK releases.

   • Fetch the OpenJDK project page at https://openjdk.org/projects/jdk/ and identify the latest GA (General Availability) JDK release.
   • Compare it against the site's current coverage. Read the existing JSON snippet files in the category subfolders (e.g., language/*.json, concurrency/*.json) to see which JDK versions are already covered.
   • If the latest GA release is already fully covered, stop and report "No new JDK release to cover."

2. Research new features.

   • Go to https://openjdk.org/projects/jdk/{version}/ for the new release.
   • Identify all JEPs that are finalized (not preview, not incubator, not experimental).
   • Focus on language features and API additions that a typical Java developer would use in application code. Skip internal/VM-only JEPs (GC changes, ports, JFR internals, etc.) unless they have a clear developer-facing usage pattern.
   • Also note any features that graduated from preview to final in this release.

3. Create new snippet JSON files.

   • Each snippet is an individual JSON file at {category}/{slug}.json.
   • Use an existing JSON file (e.g., language/type-inference-with-var.json) as a reference for the schema. Each snippet needs:
     • id: next sequential integer
     • slug: kebab-case URL slug (must match the filename without .json)
     • title: human-readable title
     • category: one of language, collections, strings, streams, concurrency, io, errors, datetime, security, tooling (must match the parent folder)
     • difficulty: beginner, intermediate, or advanced
     • jdkVersion: the JDK version where this became final (non-preview)
     • oldLabel / modernLabel: e.g., "Java 8" / "Java 26+"
     • oldApproach / modernApproach: short description of each approach
     • oldCode / modernCode: complete, compilable code snippets (concise, max ~12 lines each)
     • summary: one-sentence summary
     • explanation: 2-3 sentence explanation of why the modern approach is better
     • whyModernWins: array of exactly 3 objects with icon, title, desc
     • support: version info string, e.g., "Finalized in JDK 26 (JEP NNN, Month Year)."
     • prev: category/slug of the previous pattern, or null if first
     • next: category/slug of the next pattern, or null if last
     • related: array of exactly 3 category/slug strings for related patterns

4. Update existing files.

   • Update the next field of the last existing snippet's JSON file to point to the first new snippet, and set the new snippet's prev accordingly. Chain all new snippets together.
   • Add a preview card for each new snippet to site/index.html inside the #tipsGrid div.
   • The snippet count in site/index.html uses {{snippetCount}} placeholders — it is updated automatically by the generator.
   • Do NOT edit site/data/snippets.json or any HTML files in site/ category subfolders — these are generated by html-generators/generate.java and must not be modified directly.

5. Verify the build.

   • Run java -jar html-generators/generate.jar to regenerate all HTML pages and site/data/snippets.json.
   • Confirm the new pages were generated successfully.

6. Create a pull request.

   • The PR title should be: [new-jdk] Add snippets for JDK {version} features
   • The PR body should list each new snippet with its title and a one-line summary.
   • Mention which JEPs are covered and link to the OpenJDK release page.

• Only include features that are final (non-preview) in the new JDK release.
• Label preview features as preview if you choose to include them, with "(Preview)" in the modernLabel.
• All content goes in content/{category}/{slug}.json files — never edit generated HTML or site/data/snippets.json.
• Run java -jar html-generators/generate.jar after making changes to verify the build.
• Do not modify existing snippet JSON files unless a feature graduated from preview to final.
• If a previously preview feature is now final, update its modernLabel and support text to remove the "(Preview)" label in its JSON file.