●2.1.280 — Claude Code reached 2.1.280 on September 22, adding Claude Opus 5.5 (claude-opus-5-5) as the new default Opus model: 1M context, $4/$20 per Mtok, and $0.20/Mtok cache reads●10/07 — The old spellings of the Claude Desktop and Cowork managed config keys stop being accepted at 12:00 PT on October 7, fourteen days out. After that the check fails closed●0X80070020 — On Windows, updates can silently fail to land and leave the old build running. A lingering git fsmonitor--daemon blocks the new version, and the report includes a workaround that needs no reboot●NEW — Auditing the worktrees that were supposed to clean themselves up, and deciding what to hand to isolation●BING73 — Bing accounts for 73.6% of this site's real traffic. What gets read is strictly troubleshooting — billing errors, PowerShell, file attachments — and not one explainer sits near the top●COWORK — Handing over write access in three stages — read-only, one scoped folder, then writes — keeps the places you cannot undo out of reach until last●2.1.280 — Claude Code reached 2.1.280 on September 22, adding Claude Opus 5.5 (claude-opus-5-5) as the new default Opus model: 1M context, $4/$20 per Mtok, and $0.20/Mtok cache reads●10/07 — The old spellings of the Claude Desktop and Cowork managed config keys stop being accepted at 12:00 PT on October 7, fourteen days out. After that the check fails closed●0X80070020 — On Windows, updates can silently fail to land and leave the old build running. A lingering git fsmonitor--daemon blocks the new version, and the report includes a workaround that needs no reboot●NEW — Auditing the worktrees that were supposed to clean themselves up, and deciding what to hand to isolation●BING73 — Bing accounts for 73.6% of this site's real traffic. What gets read is strictly troubleshooting — billing errors, PowerShell, file attachments — and not one explainer sits near the top●COWORK — Handing over write access in three stages — read-only, one scoped folder, then writes — keeps the places you cannot undo out of reach until last