Enable most ruff checks

[scal444]

No description provided.

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge; no actionable behavioral, security, or repository-rule violations were identified.

Summary

This PR enables additional Ruff rule families and applies lint-driven, behavior-preserving cleanups across library code, benchmarks, and tests.

• Expands Ruff coverage to async, Bugbear, performance, Pylint warnings, return, and simplification checks.
• Refactors MCS pair construction and TFD benchmark validation without changing ordering or result semantics.
• Tightens TFD exception tests and simplifies test factories, parsing helpers, and benchmark callbacks.

_{Reviews (1) · Last reviewed commit: "Localize intentional Ruff suppressions"}

[evasnow1992]

Changes look good to me. Thanks!