You'll notice
The keybindingFlavor setting is deprecated; prompt word-editing always follows readline conventions now.
The keybindingFlavor setting ('classic' vs 'readline') is now deprecated and no longer has any effect. Word-editing keys in the prompt always follow Bash (readline) conventions regardless of what the setting was previously set to.
Names in the bundlekeybindingFlavor
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Anthropic's release notes agree
Changed the prompt's word-editing keys to match Bash: Ctrl+W deletes back to whitespace, Alt+F and Alt+D stop at word end, punctuation…