fix old description

[hheei]

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Summary by cubic

Update the pi-plugin README to point AFT config to the new CortexKit locations and remove unsupported .json variants. Docs now reference ~/.config/cortexkit/aft.jsonc and <project>/.cortexkit/aft.jsonc, replacing ~/.pi/agent and .pi.

^{Written for commit a160ba9. Summary will update on new commits.}

Greptile Summary

Updates the Pi plugin documentation to list only the supported user and project aft.jsonc configuration paths.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
packages/pi-plugin/README.md	Removes the unsupported .json alternatives and replaces the obsolete Pi-specific locations with the current CortexKit aft.jsonc paths.

_{Reviews (2): Last reviewed commit: "Update README.md" | Re-trigger Greptile}

[greptile-apps]

Unsupported JSON config paths

When a user follows these instructions and creates either documented aft.json variant, the plugin checks only the corresponding aft.jsonc path, causing the user configuration or project overrides to be silently ignored.

[cubic-dev-ai]

No issues found across 1 file

_{Re-trigger cubic}