Add a new `z --` command that jumps back to the last directory the user
stayed in for at least 5 seconds. The threshold is configurable via the
`_ZO_REST_THRESHOLD` environment variable (default: 5).
This is implemented entirely in the shell templates with no Rust binary
changes. Each shell hook now tracks dwell time per directory and records
the last "rested" directory in a session-local variable.
Supported across all 9 shells: bash, zsh, fish, posix, powershell,
elvish, nushell, tcsh, and xonsh.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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