Confirm-overlay countdown

Added by #30.

The d confirm overlay has two modes, picked automatically based on whether D (toggle “delete branch on remove”) was pressed earlier in the session.

Classic mode: delete branch on remove OFF

Single keystroke:

• y / Enter → fires the delete immediately.
• n / Esc → cancels.

Same as the pre-#30 behaviour. Removing a worktree without dropping its branch is cheap (just an entry in .git/worktrees/) and the branch survives, so there’s nothing to safeguard against.

Countdown mode: delete branch on remove ON

When D is armed, the overlay shows the branch about to disappear plus a two-stage arm step:

1. y (or Enter on the focused [ Confirm ] button) → arms a safety countdown (default 3s, visualised by a progress bar with an animated spinner beside it as a live loader).
2. The actual delete fires once the bar fills.
3. y again during the countdown disarms it without firing.
4. Esc / n cancels at any time, armed or not.

The reasoning: dropping a branch is destructive (the branch is gone from git branch, only git reflog can resurrect it). The countdown forces a sub-second pause where you can change your mind, especially useful when muscle memory says dyy and you didn’t notice D was still armed from earlier in the session.

Configuration

The countdown duration is configurable via [tui].confirm_countdown_secs in .gwm.toml. Accepted range: 0..=5.

[tui]
# 3s default. Set to 0 to disable the countdown (classic modal even when D is armed).
confirm_countdown_secs = 3

• 0 → keeps the classic single-keystroke modal even when delete branch on remove is armed.
• 1..=5 → the visualised countdown length, in seconds.
• Values above 5 are silently clamped to 5 on read.

See Configuration → .gwm.toml schema for the full [tui] block.

Related

• Keybindings → confirm-delete overlay: the keys this page describes
• CLI → gwm remove: same destructive action, but from the CLI (no countdown; the flag is --delete-branch explicit)