I have impostor syndrome after vibe coding my app

Context: I'm a young sysadmin, working at the same MSP company since I started 6 years ago. I already have beginner skills in C/C++ and Python, plus a French master's degree (Bac+5) in software/network project management and cloud architecture.

Maybe out of greed, maybe out of boredom, I turned to building my own SaaS.
I went through forums and experience reports, notably from this subreddit and others.
I identified a real problem in my field and my company, which me and my colleagues confirmed, through our experience, to also be present elsewhere.
I studied different software architectures, several tech stacks, planned, anticipated, basically real project management like what I learned at school.
From there, after confirming all these aspects, I started coding with the classics: vscode x claude code.
Fable 5 landed around the same time so that helped me a lot.
Feature after feature, tests after tests, failures after failures, I built my app in about 2 months.
Given the pitfalls of vibe coding, I paid particular attention to the typical flaws (URL injection security issues, technical debt, chaotic architecture, dead code or over-engineering...)
It's functional, secure, no technical debt, every possible aspect is documented, I know its architecture inside out, basically that's my baby.
I put it online, indexed on Google and Bing, basically everything is ready, all that's left is to start outreach.

And yet, I'm scared as fuck at the idea of presenting this to the public. The app is indeed functional and finished, but if you look closely you can pretty easily tell it's a vibe coded frontend.
And no lie, after seeing so much hate about vibe coding here and elsewhere, after seeing completely crafted success stories from some vibe coders, I feel like a huge fraud...
I'm not the one who fully coded this app, sure the architecture and internal logic were thought out by me, but assisted by an AI, and it's that same AI that wrote the code, not me...
The fact that I'm able to know perfectly how the app works doesn't change anything, it's like I was lent something I'll have to give back sooner or later.
Not to mention people's reaction toward vibe coding, especially in the corporate world... I'm genuinely completely paralyzed and unable to go any further.
Some posts on this sub make me feel like a dirty cheater or scammer, and I feel like I want to drop the whole thing...

Author: parazoid47