fix(cli): allow --performance small for query run and run-sql

[charisra]

• Extend parsePerformance to accept small alongside medium and large (matches public API / Dune API client).
• Update dune query run and dune query run-sql flag help and README so docs match the allowed values.
• No change to default performance (still medium).

[cursor]

PR Summary

Low Risk
Small, localized change to CLI flag validation and documentation; minimal behavioral impact beyond accepting an additional enum value.

Overview
The CLI now accepts --performance small for dune query run and dune query run-sql by extending parsePerformance validation to allow small in addition to medium/large.

Help text and the README usage tables are updated so documented --performance values match the newly accepted tier; the default remains medium.

^{Reviewed by Cursor Bugbot for commit 854691d. Configure here.}

[charisra]

• fix(cli): allow --performance small for query run and run-sql #54 👈 (View in Graphite)
• main

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[charisra]

bugbot run

[cursor]

✅ Bugbot reviewed your changes and found no new issues!

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^{Reviewed by Cursor Bugbot for commit 854691d. Configure here.}