Greptile Summary

This PR adds a toggleable "show line break marker" feature that renders a "¬" glyph at the end of each non-final document line in CodeMirror when both the new setting and text wrapping are active. Supporting changes include devcontainer/Gradle toolchain configs and translation string additions across all locale files.

• src/cm/lineBreakMarker.ts: New ViewPlugin using widget decorations; the getDecorations method accumulates ranges into a plain array before calling Decoration.set, which can produce duplicate entries when a long document line spans two visible ranges — replace with RangeSetBuilder for robustness.
• src/lib/editorManager.js: Compartment is correctly keyed on both showLineBreakMarker and textWrap, so toggling either setting properly enables/disables the markers without an extra listener.
• src/lang/*.json / index.d.ts: Both the label and info-text keys are present in en-us.json and the TypeScript declarations; other locale files carry English placeholder strings consistent with this project's pattern.

Confidence Score: 4/5

Safe to merge after addressing the RangeSetBuilder refactor in the new plugin file; all other changes are additive and low-risk.

The core editor integration in editorManager.js is solid — compartment keying and listener wiring are correct. The only concern is in lineBreakMarker.ts: iterating visible ranges with a plain array can add duplicate widget decorations at the same position when a long document line spans two consecutive visible ranges, producing stray "¬" glyphs. Switching to RangeSetBuilder (the standard CodeMirror idiom, as used in the adjacent indentGuides plugin) removes that risk entirely.

src/cm/lineBreakMarker.ts — the getDecorations method should use RangeSetBuilder instead of a plain array to avoid duplicate markers on long lines.

Important Files Changed

_{Reviews (2): Last reviewed commit: "Merge branch 'main' into feature/line-br..." | Re-trigger Greptile}