Claude Code 2.1.293–2.1.296 Changelog Delta Analysis

Summary

A delta review of the Claude Code changelog for versions 2.1.293–2.1.296 (read 2026-10-11), checking each notable entry against the yoyo coding agent at commit 85aebfbc to determine whether yoyo already covers the behavior or has a gap. Most items were classified as either already closed in yoyo, linked to an existing yoyo workstream, or unprobed/open. The same source notes that Codex's latest stable release at the time (rust-v0.162.1, 2026-10-09) was bugfix-only.

Key Points

• Most Claude Code fixes in this window are failure-path honesty: hooks fail closed, the user is told when the agent has been stopped, and an interrupt actually ends the turn. This is the same class of work yoyo is pursuing in issues #982/#988.
• Three entries were verified as no gap — yoyo already behaves the same or better:
  • onFailure:block for hooks (a hook that cannot start or times out blocks the action) — yoyo pre-hooks already fail closed.
  • FORCE_COLOR=3 leaking ANSI codes into what the model reads — yoyo strips ANSI before tool output reaches the model.
  • Haiku 5.5 support, added in 2.1.293 — yoyo already has it (Day 222).
• Two entries map onto existing yoyo workstreams:
  • User-tunable backoff ceiling for 529 "overloaded" responses relates to yoyo #997 (opt-in retry after partial) and the yoagent 0.25 upgrade #1007, which moves Overloaded onto the ProviderRetry door.
  • MCP tool description limit raised 2048 → 4096 characters up front.
• Three entries are open/unprobed gaps in yoyo:
  • Bash permission checking auto-approving a BASH_ARGV0 assignment followed by its use (variable indirection).
  • Edit treating a file as fully read when its contents changed without the mtime advancing, and treating a file as read after printed nothing — i.e. , which yoyo lacks entirely.