fzf v0.73.0

Release highlights: https://junegunn.github.io/fzf/releases/0.73.0/

• Nushell integration via fzf --nushell and the installer (#4630) (@sim590)
• New --preview-window=next position that places the preview adjacent to the input section, on the list side: above the input in the default layout, below it in --layout=reverse (#4798)
• Timer-driven every(N) event for --bind, where N is seconds
• Added $FZF_IDLE_TIME (whole seconds) and $FZF_IDLE_TIME_MS (milliseconds), holding the elapsed time since the last user activity
  • Pair with every(N) to build idle-based behavior such as auto-accept or auto-quit (#1211)

    # Live process list; --track --id-nth 2 keeps the cursor on the same PID across reloads
    fzf --header-lines 1 --track --id-nth 2 --bind 'start,every(2):reload-sync:ps -ef'
    
    # Auto-accept after 10 seconds of inactivity, with a countdown in the footer after 5s
    fzf --bind 'every(1):bg-transform:
      if   [[ $FZF_IDLE_TIME -lt 5  ]]; then echo change-footer:
      elif [[ $FZF_IDLE_TIME -lt 10 ]]; then echo "change-footer:auto-accept in $((10 - FZF_IDLE_TIME))s"
      else echo accept
      fi'
    

• Added $FZF_CURRENT_ITEM for shells where quoting {} is awkward (#4802)
• Bug fixes
  • Scoring: non-word characters at the start of input or after a delimiter now receive the same boundary bonus as word characters (#4795)
  • change-preview-window no longer resets wrap / wrap-word state set via toggle-preview-wrap / toggle-preview-wrap-word (#4791)
  • Stripped UTF-8-encoded C1 control characters from rendered items to prevent terminal control-sequence injection
  • Fixed integer-overflow panic in FuzzyMatchV2 on 32-bit builds (Michal Majchrowicz, Marcin Wyczechowski, AFINE Team)
  • Fixed bg-transform reload / exclude payloads being dropped
  • Fixed rendering glitch with preview window on the left combined with footer