Bump `monaco-editor` from `^0.49.0` to `^0.55.1` (resolves to 0.55.1).
## What changed in Monaco 0.49 → 0.55
- **0.50–0.52**: Minor additions (placeholder, compactMode, new editor
options)
- **0.53**: AMD build deprecated (we use ESM via webpack — unaffected)
- **0.54**: New `mouseMiddleClickAction` option, bug fixes
- **0.55**: Nested language namespaces moved to top level
(`languages.typescript` → `typescript`, etc.) — we don't use any of
these
## No breaking changes affect our usage
- `deltaDecorations` still works (soft-deprecated since 0.34); existing
TODOs in ast-view and ir-view track migration to
`createDecorationsCollection`
- No removed APIs are used by CE
- `monaco-vim` 0.4.4 has a wildcard peer dep — works fine
- Webpack plugin stays pinned at 7.1.0 due to upstream bug
[microsoft/monaco-editor#5073](https://github.com/microsoft/monaco-editor/issues/5073)
— see #8214 for tracking
Closes#7881
## Testing
- ✅ `npm run ts-check` — all 4 projects pass (backend, frontend, tests,
frontend-tests)
- ✅ `npm run test-min` — 1382 tests passed
- ✅ Dev server: UI renders, compilation works, source-to-asm line
mapping works, vim mode works
- ✅ Zero browser console errors/warnings
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🤖 *This PR was generated by an LLM (Claude, via OpenClaw)*