Mass noun usage marked wrong

**What got flagged?**

Alternatively, while plants naturally produce **a wealth** of valuable compounds, they typically do so at low concentrations, making extraction costly and resulting in expensive market products.

In bacteria such as _E. coli_, the pathway consists of 7 discrete mono-functional enzymes, **each catalyzing** a specific reaction.

**Why is this incorrect?**
"a wealth" and "each catalyzing" are marked as wrong even though in this context it's correct.

Writting typst files in VS Code:

Start by reproducing the diagnostics in VS Code with the two Typst examples shown in the issue, then trace which grammar-checker rule marks “a wealth” and “each catalyzing” as incorrect. Done means these valid usages are no longer flagged in Typst files, with regression coverage for both examples.

Written by the indexing model from the issue text.