Bilig

vlibraries-v0.66.0 scope: libraries Feature

This release adds 2 notable features for engineering teams evaluating rollout.

Published 11d Developer Productivity

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✓ No known CVEs patched

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✓ No known CVEs patched in this version

Topics

agent-tools ai-agents excel excel-formulas formula-engine formula-recalculation

+14 more

headless-spreadsheet mcp mcp-server model-context-protocol nodejs spreadsheet spreadsheet-automation spreadsheet-engine spreadsheet-formulas typescript workbook-api xlsx xlsx-formulas xlsx-recalculation

ReleasePort's take

Light signal

editorial:auto 11d

Libraries v0.66.0 introduces validation for feature plugins and preserves run error issue paths in workbook, while also fixing loss of rich text artifacts and improving core performance by deferring deleted literal undo capture.

Why it matters: The release adds plugin validation (feature) and bug‑fixes artifact preservation in workbook; it also enhances core performance via deferred undo capture, benefiting stability and efficiency for developers using the workbook surface.

Summary

AI summary

Updates Libraries v0.66.0, workbook, and Internal runtime changes across a mixed release.

Changes in this release

Type	Severity	Summary	CVE
Feature	Medium	Adds validation for feature plugins in workbook Adds validation for feature plugins in workbook Source: llm_adapter@2026-05-23 Confidence: high	—
Feature	Medium	Preserves run error issue paths in workbook Preserves run error issue paths in workbook Source: llm_adapter@2026-05-23 Confidence: high	—
Performance	Medium	Defers deleted literal undo capture in core Defers deleted literal undo capture in core Source: llm_adapter@2026-05-23 Confidence: high	—
Bugfix	Medium	Preserves rich text artifacts in workbook Preserves rich text artifacts in workbook Source: llm_adapter@2026-05-23 Confidence: high	—

Full changelog

Libraries v0.66.0

Release type: minor
Previous libraries tag: libraries-v0.64.0
Manual override: no

Features

feat(workbook): validate feature plugins (f625484d)
feat(workbook): preserve run error issue paths (3c5e911a)

Fixes

fix(workbook): preserve rich text artifacts (a07c402a)
perf(core): defer deleted literal undo capture (ae1586c1)

Internal runtime changes

docs(workpaper): expose agent workflow entrypoints (8f0848a1)
chore(release): runtime packages v0.65.0 (580bf991)

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