fix: apply rustfmt formatting to resolve CI lint failure

[Copilot]

CI was failing on the Check & Lint job because cargo fmt --check detected formatting drift in component/src/lib.rs.

Changes

• component/src/lib.rs: Applied rustfmt formatting throughout — collapses/expands method chains, macro calls, and let bindings to conform to line-length rules:
  • Single-line let json: Value = serde_json::from_slice(...) (was split across two lines)
  • Expanded log(...) and multi-argument assert!/assert_eq! calls to multi-line form
  • Collapsed short method chains (.get(&0).map(...).unwrap_or(...)) to single lines

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