Add pyrefly and pyrefly-docs configuration

[adamtheturtle]

Add pyrefly type checker and pyrefly-docs hooks to pre-commit configuration.

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Note

Introduces pyrefly checks to the tooling.

• Adds pyrefly and pyrefly-docs pre-push hooks running pyrefly check (and doccmd variant) in .pre-commit-config.yaml
• Pins pyrefly==0.46.1 in pyproject.toml dev dependencies
• Updates CI skip list to include pyrefly hooks
• Reformats several entry commands to multi-line for readability (no behavioral change)

^{Written by Cursor Bugbot for commit 9ee7aaf. This will update automatically on new commits. Configure here.}

[cursor]

Unrelated debugging code accidentally committed

The line hash = 1 appears to be accidentally committed code that is unrelated to the PR's stated purpose of adding pyrefly configuration. This variable is never used in the function - the actual hash computation uses the hashed variable. This looks like leftover debugging or test code that was mistakenly included in this commit. It also shadows Python's built-in hash function, though that isn't used in this context.