[codex] Fix lazygit shortcut in nested terminals

[shlroland]

Summary

Fixes #531.

Cmd+Shift+G could show Lazygit: Not a git repository even when the current interactive Fish shell had already entered a valid Git repository with zi or cd. The problem is not specific to Herdr or tmux: Kaku's cached/OSC 7 pane cwd can lag behind the shell's real $PWD, so the old Git preflight checked the wrong directory and blocked dispatch.

The shortcut still belongs to Kaku, but it now checks only that lazygit is installed and sends Ctrl+U + lazygit + Enter to the current terminal input stream. The receiving shell or multiplexer resolves the command using its actual focused-pane $PWD. If that directory is not a Git repository, lazygit reports the native error itself.

Changes

• Remove the outer-pane cwd and Git preflight from launch_lazygit.
• Preserve the missing-lazygit and dispatch-failure feedback.
• Preserve clear-line-before-send behavior.
• Add a regression guard preventing reintroduction of the outer cwd Git rejection.

Validation

• cargo test -p config
• make fmt-check
• make app
• luajit -e "assert(loadfile('assets/macos/Kaku.app/Contents/Resources/kaku.lua'))"

Manual verification

1. Start Kaku in a non-Git directory.
2. In a normal Fish pane, use zi to enter a Git repository.
3. Confirm pwd and git status show the repository.
4. Press Cmd+Shift+G.
5. Lazygit should open in the repository selected by Fish, without relying on Kaku's cached pane cwd.

The same flow also covers Herdr and tmux nested panes.

[vercel]

@shlroland is attempting to deploy a commit to the Faberon Team on Vercel.

A member of the Team first needs to authorize it.

[tw93]

@shlroland Merged as c7d2c604 and included in the latest Nightly. The active shell now owns the nested cwd decision, so Cmd+Shift+G no longer rejects lazygit based on the outer pane path. Exact-main Checks and Build Validation are green. Thanks for the focused fix.

Nightly: https://github.com/tw93/Kaku/releases/download/nightly/Kaku-nightly.dmg