Claude Code v2.1.260-261: skill doctor, fullscreen diff panel, cache-miss diagnostics
Anthropic
Anthropic shipped Claude Code v2.1.260 (Sep 3) and v2.1.261 (Sep 4). Highlights: /skill-doctor showing unused skills and their context cost, a fullscreen /diff panel of uncommitted changes, prompt-cache-miss diagnostics in /cost, bashOutputMaxChars/taskOutputMaxChars settings raising inline output to 128K chars, organization-policy diagnostics in /status and claude doctor, improved auto-compact for 1M-context Opus/Fable, and VS Code additions (MCP server management forms, session archive/filtering). v2.1.260 also reverted 2.1.259's Read() deny-rules applying to Bash arguments.
Why it matters
Cache-miss diagnostics and skill cost visibility attack the two biggest Claude Code cost/UX complaints (token spend and skill bloat) directly.
Importance: 2/5
Routine release cadence but with real diagnostics features