feat(query): decode results via SDK get_result_arrow (arrow v55)

[zfarrell]

Closes #130. Bumps the CLI's arrow crate v54→v55 to match the SDK and switches the Arrow result fetch from the raw get_bytes IPC path to the SDK's Client::get_result_arrow, so transport and decode share one arrow version. Output stays byte-identical (same schema-derived columns and arrow_cell row conversion).

[claude]

Clean arrow v54→v55 bump routing the result fetch through the SDK's get_result_arrow. Decode output stays equivalent (same schema-derived columns + per-row arrow_cell conversion), from_arrow preserves status-bearing variants so the 4xx re-auth hint still fires, and the new tests meaningfully cover decode, 404, and generic-HTTP status mapping. LGTM.

[sentry]

Codecov Report

❌ Patch coverage is 79.22078% with 16 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/query.rs	0.00%	9 Missing ⚠️
src/sdk.rs	89.70%	7 Missing ⚠️

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[claude]

Clean, well-tested refactor. Verified removed symbols leave no dangling references, from_arrow preserves status-bearing variants for the re-auth hint, the Arrow fetch only runs after succeeded so there's no not-ready path, and output parity is maintained. Tests cover the IPC round-trip plus 404/403 status mapping.