Reproduction steps

1. Create a skill
2. Write valid frontmatter followed by body content where a multi-byte character (emoji, etc.) starts at byte 4095 of the file.
3. Open Zed and the agents pane. I see the skill fail to load with an error about invalid utf-8

Current vs. Expected behavior

I expect skills to load, even when they have an emoji at a given byte offset in the file

Zed version and system specs

Zed: v1.4.1+preview.287.084505b1bbdcf5047ff8438658492ed738a3b9f4 (Zed Preview)
OS: macOS 26.3.1 (a) (Build 25D771280a)
Memory: 32 GiB
Architecture: aarch64

Attach Zed log file

Relevant Zed settings

Relevant Keymap

(for AI issues) Model provider details

No response

If you are using WSL on Windows, what flavor of Linux are you using?

None