fix(non-interactive-env): use detectShellType() instead of hardcoded 'unix' (#1459)

The shellType was hardcoded to 'unix' which breaks on native Windows shells
(cmd.exe, PowerShell) when running without Git Bash or WSL.

This change uses the existing detectShellType() function to dynamically
determine the correct shell type, enabling proper env var syntax for all
supported shell environments.

Author: code-yeongyu

src/hooks/non-interactive-env/index.ts

@@ -1,7 +1,6 @@
 import type { PluginInput } from "@opencode-ai/plugin"
-import type { ShellType } from "../../shared"
 import { HOOK_NAME, NON_INTERACTIVE_ENV, SHELL_COMMAND_PATTERNS } from "./constants"
-import { log, buildEnvPrefix } from "../../shared"
+import { log, buildEnvPrefix, detectShellType } from "../../shared"
 
 export * from "./constants"
 export * from "./detector"
@@ -53,10 +52,10 @@ export function createNonInteractiveEnvHook(_ctx: PluginInput) {
       // The env vars (GIT_EDITOR=:, EDITOR=:, etc.) must ALWAYS be injected
       // for git commands to prevent interactive prompts.
 
-      // The bash tool always runs in a Unix-like shell (bash/sh), even on Windows
-      // (via Git Bash, WSL, etc.), so we always use unix export syntax.
-      // This fixes GitHub issues #983 and #889.
-      const shellType: ShellType = "unix"
+      // Detect the shell type dynamically to support native Windows shells
+      // (cmd.exe, PowerShell) in addition to Unix-like shells (bash, zsh).
+      // Fixes Windows compatibility issues when running without Git Bash/WSL.
+      const shellType = detectShellType()
       const envPrefix = buildEnvPrefix(NON_INTERACTIVE_ENV, shellType)
       output.args.command = `${envPrefix} ${command}`