docs(readme): faq about vibe coding (#356)

* docs(readme): faq about vibe coding

* docs: improve wording

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

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Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: KSXGitHub

README.md

@@ -175,6 +175,14 @@ sudo pacman -S parallel-disk-usage
 
 [![Packaging Status](https://repology.org/badge/vertical-allrepos/parallel-disk-usage.svg)](https://repology.org/project/parallel-disk-usage/versions)
 
+## Frequently Asked Questions
+
+### Is this project vibe-coded?
+
+No. "Vibe coding" means letting AI do everything without human involvement. This project uses AI-assisted workflows with active human direction and reviews.
+
+Using AI also does not mean poor quality. On the contrary, AI reviews have helped detect previously undetected bugs.
+
 ## Similar programs
 
 * **CLI:**