- Add System.print() wrapper to all list subscript and count examples in lists.markdown
- Reformat map literal alignment and reword description in maps.markdown
- Remove paragraph about fibers as map keys from maps.markdown
- Change method-calls example from "hello" to "Heyoo!" and reword VM execution description
- Update performance benchmark timings and bar widths across all test cases
- Fix missing article "a" in "expose some stored or computed property"
- Fix missing relative pronoun "that" in "a method doesn't need any parameters"
- Replace incorrect example `list.clear` with `[1, 2, 3].clear` in getter/setter distinction section
- Simplify phrasing "without any collision" to "without a collision" in setters section
Restructure the documentation hierarchy to prepare for documenting additional built-in modules. Move all core library documentation from `doc/site/core/` to `doc/site/modules/core/`, rename `modules.markdown` to `modularity.markdown`, remove `^category` metadata lines from all affected pages, update cross-reference links to use relative paths under the new structure, and add a TODO placeholder to the Class class page.
Add `^category` front matter to all language, types, and reference doc pages for site navigation restructuring. Replace `:::wren` and `:::java` code block annotations with `:::dart` across multiple files. Create new stub pages for core-libraries, embedding-api, and contributing under the reference category. Remove the old embedding and getting-involved stub pages.