Problem

AI agents frequently run jtk fields list --project MON | grep -i "point|story" trying to find the story points field ID. The --project flag doesn't exist, Cobra errors, grep finds nothing, and the agent gives up — even though the field exists in the global list.

Solution

Add a --name flag to jtk fields list for case-insensitive substring filtering on field names. Client-side filtering of the already-fetched global field list — no API changes needed.

jtk fields list --name "story point"
jtk fields list --name "story" --custom -o json

Scope

• Add --name flag and filtering logic to fields.go
• Unit tests for filtering, case insensitivity, composition with --custom
• Update README command docs
• Add integration test cases