Use 'Josh Liebow-Feeser' in repository metadata and Anneal docs

[joshlf]

Motivation

• Standardize the author's public name across repository metadata and documentation by replacing the longer form with the preferred short form.

Description

• Replaced Joshua Liebow-Feeser with Josh Liebow-Feeser (and Joshua with Josh where applicable) in Cargo manifests and the Anneal design document.
• Files modified: anneal/Cargo.toml, anneal/v2/Cargo.toml, tools/Cargo.toml, zerocopy/Cargo.toml, zerocopy/zerocopy-derive/Cargo.toml, and anneal/docs/design/design.md.
• Changes are limited to metadata and author attribution only and include minor whitespace normalization in tools/Cargo.toml to satisfy diff checks.

Testing

• Parsed each modified Cargo manifest with Python's tomllib to ensure the TOML remains valid and the files parse successfully.
• Verified no remaining tracked occurrences with git grep -n -e 'Joshua Liebow-Feeser' -e 'Joshua'.
• Ran git -c core.whitespace=cr-at-eol diff --check to ensure there are no diff/whitespace issues and inspected git status --short to confirm the working tree state.

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Codex Task

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.85%. Comparing base (010b6ab) to head (c8511d5).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3496   +/-   ##
=======================================
  Coverage   91.85%   91.85%           
=======================================
  Files          20       20           
  Lines        6093     6093           
=======================================
  Hits         5597     5597           
  Misses        496      496           

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[jswrenn]

Joshing around with the metadata, eh?