feat: refactor sgclaw around zeroclaw compat runtime

third_party/zeroclaw/.gitattributes

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+# Git attributes for ZeroClaw
+# https://git-scm.com/docs/gitattributes
+
+# Auto detect text files and perform LF normalization
+* text=auto
+
+# Source code
+*.rs text eol=lf linguist-language=Rust
+*.toml text eol=lf linguist-language=TOML
+*.py text eol=lf linguist-language=Python
+*.js text eol=lf linguist-language=JavaScript
+*.ts text eol=lf linguist-language=TypeScript
+*.html text eol=lf linguist-language=HTML
+*.css text eol=lf linguist-language=CSS
+*.scss text eol=lf linguist-language=SCSS
+*.json text eol=lf linguist-language=JSON
+*.yaml text eol=lf linguist-language=YAML
+*.yml text eol=lf linguist-language=YAML
+*.md text eol=lf linguist-language=Markdown
+*.sh text eol=lf linguist-language=Shell
+*.bash text eol=lf linguist-language=Shell
+*.ps1 text eol=crlf linguist-language=PowerShell
+
+# Documentation
+*.txt text eol=lf
+LICENSE* text eol=lf
+
+# Configuration files
+.editorconfig text eol=lf
+.gitattributes text eol=lf
+.gitignore text eol=lf
+.dockerignore text eol=lf
+
+# Rust-specific
+Cargo.lock text eol=lf linguist-generated
+Cargo.toml text eol=lf
+
+# Declare files that will always have CRLF line endings on checkout
+*.sln text eol=crlf
+
+# Denote all files that are truly binary and should not be modified
+*.png binary
+*.jpg binary
+*.jpeg binary
+*.gif binary
+*.ico binary
+*.svg text
+*.wasm binary
+*.woff binary
+*.woff2 binary
+*.ttf binary
+*.eot binary
+*.mp3 binary
+*.mp4 binary
+*.webm binary
+*.zip binary
+*.tar binary
+*.gz binary
+*.bz2 binary
+*.7z binary
+*.db binary