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Claude Code 2.1.260 · Fable cache + effort
Diff panel; cache-miss causes in /cost; Fable 5.1 effort no longer invalidates cache; tool-result context cached again; Fable 1M pin and picker fixes; 2.1.259 Bash Read deny reverted. latest 2.1.260 / stable 2.1.236.12
Relevant to: Anyone on Fable 5.1 in Claude Code after 2.1.257–259
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Originally part of the 4 September 2026 edition.