Know the Moment It Breaks

Here is the thing nobody warns you about: most people who hit a bug will not tell you. They close the tab and go somewhere else.

So "no complaints" does not mean "no problems". It might just mean nobody bothered.

Why other people's bugs are different

On your machine, an error is right there in the console. On someone else's, it happens in a browser you cannot see, on a device you do not own, at a moment you were not watching.

And they are often things you could never have hit yourself:

• A phone screen much narrower than yours.
• A slow connection where something loaded in a different order.
• Data that is empty, or enormous, or contains an emoji.
• An older browser missing something newer ones have.

The fix: let the app tell you

The idea is simple. When something goes wrong, the app quietly writes it down somewhere you will look, instead of only shouting into a console nobody is watching.

Two flavors:

• While you are building — catch errors as you click around, so a problem you scrolled past does not get forgotten.
• Once it is live — collect errors from real visitors, so you learn about the broken thing on the phone you do not own.

What good looks like

The pattern worth copying, whatever tool you use:

• It groups repeats. One bug hit two hundred times is one entry with a count, not two hundred rows.
• It sorts by how often, not just how recent. The thing hurting the most people should be at the top.
• It keeps a history. Marked something fixed and it comes back? You want to know it came back.
• It scrubs sensitive text. Error messages can contain file paths, usernames, sometimes secrets. Those should be stripped before being stored.

Vibe Coder Playground has this built in: a watch panel that catches errors while an app runs, and a bug list that groups repeats, counts them, ranks worst-first, and reopens an entry if a "fixed" bug happens again.

Turning a report into a fix

A captured error is only half of it. You still need the steps that caused it. So when you can, record what the person was doing — which page, which action — alongside the message. "TypeError on line 42" is a puzzle. "TypeError on line 42, when the list was empty" is a fix.

That is the same strong-report format from Phase 1, just collected automatically.