- Add erikvl87/languagetool service on the internal network
(port 8010, English only by default — change langsToLoad to add more)
- 256 MB min / 512 MB max heap; healthcheck waits up to ~3 min for
first startup while Java initialises
- Server LANGUAGETOOL_URL hardwired to http://languagetool:8010/v2 —
no character limits, no rate limits, fully private
- Remove 40 000-char cap from lint route (not needed self-hosted)
- Bump fetch timeout to 30 s for cold-start requests
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Server:
- New POST /api/lint/check proxies to LanguageTool API (public free
endpoint by default; override with LANGUAGETOOL_URL env var for
self-hosted instance)
- Returns trimmed match list: message, offset, length, replacements,
kind (spelling|grammar), ruleId
- Disables cosmetic rules that don't suit creative writing
- 20-second timeout; falls back with 502 on error
Frontend:
- LintMark: transient TipTap Mark extension (never saved to DB —
stripLintMarks() removes them from getJSON() before onChange fires)
- buildTextMap(): walks ProseMirror doc tree, builds parallel plain-
text string + position array so LanguageTool char offsets map back
to exact PM positions even across paragraphs / headings
- clearLintMarks() + runLint(): check → clear old marks → apply new
marks in one transaction, no flicker
- Click on underlined text → fixed-position popover showing the error
message + up to 6 one-click replacement buttons + Ignore / ✕
- Applying a replacement triggers an automatic re-check after 600 ms
- lintStatus: idle → checking → done → stale (when user edits)
- ABC toolbar button shows count badge when errors found, ✓ when clean
- Wavy red underline = spelling, wavy blue = grammar
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
