Check for existing issues

• Completed

Describe the feature

There is currently a boolean setting for whether or not to indicate diagnostics in the scrollbar. This is useful, but can get very visually noisy in a project that has many diagnostics with low severity (say, INFORMATION or HINT). It would be useful to allow the user to configure the minimum severity level that is indicated in the scrollbar.

Zed Version and System Specs

Zed: v0.166.1 (Zed)
OS: macOS 15.2.0
Memory: 16 GiB
Architecture: aarch64

If applicable, add mockups / screenshots to help present your vision of the feature

The setting might be called diagnostic_level, with the following options that are only applicable if the user has enabled scrollbar diagnostics:

• all: indicates all diagnostics
• info: indicates all diagnostics at least as severe as INFORMATION
• warning: indicates all diagnostics at least as severe as WARNING
• error: indicates all diagnostics with severity ERROR