fix(shell-plugin): add vi-command mode bindings for zsh-vi-mode compatibility

[i010542]

Problem Summary

When the zsh-vi-mode plugin (from Oh-My-Zsh) is active, none of the forge colon commands work (e.g., :model, :info, :doctor). Users report zsh: command not found: :model even though forge zsh doctor reports all checks passing.

Root Cause

shell-plugin/lib/bindings.zsh sets bindkey '^M' forge-accept-line, but this only binds in the current keymap. In vi-command mode (vicmd), Enter is bound to vi-accept-line, not forge-accept-line. Since forge's colon-command detection lives entirely in forge-accept-line, commands are silently discarded.

Solution

Detect zsh-vi-mode (via $ZVM_MODE variable or bindkey -lL main inspection) and also bind Enter and Tab in vicmd mode to forge's widgets:

if [[ -n "$ZVM_MODE" ]] || bindkey -lL main 2>/dev/null | grep -q "..."; then
    bindkey -M vicmd '^M' forge-accept-line
    bindkey -M vicmd '^J' forge-accept-line
    bindkey -M vicmd '^I' forge-completion
fi

This is non-breaking: the check only activates when vi mode is detected.

Test Evidence

1. Load forge plugin with zsh-vi-mode enabled in ~/.zshrc:

   plugins=(zsh-vi-mode)

2. Type :model and press Enter → should invoke forge-accept-line
3. Tab completion → should invoke forge-completion

Key Differentiator

Unlike a generic "add vi mode support" patch, this specifically targets the zsh-vi-mode plugin's keymap isolation — a narrow, well-scoped fix for the reported bug.

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Resolves: #2681

[i010542]

Hi @tusharmath — PR #2684 ready for review! Fixes issue #2681: zsh-vi-mode compatibility for forge colon commands.

What changed: now also binds Enter and Tab in vicmd mode when zsh-vi-mode is detected.

Root cause: "^M" accept-line only sets the binding in the current keymap. In vicmd mode, Enter was bound to vi-accept-line, bypassing forge-accept-line entirely.

Test: Load zsh-vi-mode in ~/.zshrc, type :model, press Enter — should work now.

Happy to refine based on your feedback! 🙏

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