Summary

rtk lint appears to duplicate ESLint diagnostics and produce incorrect summary counts in output header.

Environment

• rtk: 0.20.0
• bun: 1.3.9
• project: ~/Projects/pricedrop/apps/pricedrop
• checked on: 18 February 2026

Reproduction

cd ~/Projects/pricedrop/apps/pricedrop
npx eslint entrypoints/background.ts --max-warnings=0 > /tmp/raw-eslint.log 2>&1
rtk lint npx eslint entrypoints/background.ts --max-warnings=0 > /tmp/rtk-eslint.log 2>&1

Raw tail:

✖ 3 problems (0 errors, 3 warnings)
ESLint found too many warnings (maximum: 0).

RTK lint tail (same command):

Lint: 3 errors, 5 warnings
...
  42:3  warning ...
  42:3  warning ...
  46:3  warning ...
  46:3  warning ...
  53:3  warning ...
  53:3  warning ...
✖ 3 problems (0 errors, 3 warnings)
ESLint found too many warnings (maximum: 0).

Expected

• No duplicated diagnostics.
• Header counts should match actual ESLint result.

Actual

• Warning lines are duplicated.
• Header reports incorrect counts (3 errors, 5 warnings) while ESLint reports 0 errors, 3 warnings.

Impact

• Misleading lint summary for users/agents.
• Harder triage and trust in compressed output.