Add .git-blame-ignore-revs

[JacobCoffee]

Summary

• Adds .git-blame-ignore-revs so git blame skips bulk formatting/restructure commits
• Covers ruff formatting (ruff #2882, 2cf268f0) and app restructure (Restructure top level apps #2883, 31bc7e36)
• GitHub automatically respects this file; local users can run:

  git config blame.ignoreRevsFile .git-blame-ignore-revs
  

Test plan

• Verify git blame on a file touched by both ruff #2882 and Restructure top level apps #2883 skips those commits

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR adds a .git-blame-ignore-revs file to help developers skip bulk formatting and restructuring commits when using git blame. The file is automatically respected by GitHub, and local users can configure their git to use it with git config blame.ignoreRevsFile .git-blame-ignore-revs.

Changes:

• Adds .git-blame-ignore-revs file with two commit references to ignore during blame operations
• References ruff formatting commit from PR #2882 (2cf268f0)
• References app restructure commit from PR #2883 (31bc7e36)

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