The existence-gate example compares mesh paths case-sensitively

The CQRS and content-access guide shows how to read a node that may not exist yet: a children listing answers whether it is there, and only then is the owner's stream opened for what it says. The example gate matched the listed path with StringComparison.OrdinalIgnoreCase.

Mesh paths are case-sensitive. A case-insensitive match lets a different node — one whose path differs only in case — satisfy the gate, and the point read that follows opens on a path that does not exist: exactly the NotFound the gate exists to rule out. The snippet was copied verbatim into a plugin and caught in review, so the guide now uses StringComparison.Ordinal and explains the reason inline.