feat(editor): add spell & grammar check engines with decorations

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Wire real spell-checking into the editor via hunspell-wasm (bundled en_US
dictionary) and an optional LanguageTool grammar client.

- spell/: HunspellSpellEngine wrapper, pure spell logic, base64 en_US dict
- grammar/: LanguageToolEngine grammar client and pure grammar logic
- decorations/: collectBlock text assembly, offset-mapped CheckService,
  buildCheckDecorations (flat DecorationSet, inline spell/grammar marks)
- export engines and types from editor index; add hunspell-wasm dep

Verified: typecheck (6 pkgs), tests (all pass), lint (6 pkgs), and web
build all green.

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This commit is contained in:

Schwitzz

2026-10-27 12:52:29 -05:00

parent b92129b62c

commit d310635b65

13 changed files with 775 additions and 1 deletions

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packages/editor/src/spell/dictionaries/en-us.ts

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