release: v0.6.26 — fix Grok nested-error (review High), tighten cc-X validator, sync release-state docs#12

bbingz merged 3 commits into

mainbbingz/polycli:mainfrom

fix/v0.6.26-grok-nested-error-and-driftbbingz/polycli:fix/v0.6.26-grok-nested-error-and-driftCopy head branch name to clipboard