fix(non-interactive-env): inherit process.env before applying NON_INTERACTIVE_ENV overrides

Previously, the hook only set NON_INTERACTIVE_ENV without inheriting the parent process environment, causing subprocess to run without proper PATH and other env vars. Now it properly inherits process.env first, then applies GIT_EDITOR=":" and EDITOR=":" to prevent interactive editors from spawning.

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

@@ -35,6 +35,7 @@ export function createNonInteractiveEnvHook(_ctx: PluginInput) {
       }
 
       output.args.env = {
+        ...process.env,
         ...(output.args.env as Record<string, string> | undefined),
         ...NON_INTERACTIVE_ENV,
       }