Fix line endings in bin/solid for Docker compatibility

- Convert Windows CRLF line endings to Unix LF in bin/solid script
- Add .gitattributes to enforce proper line endings for executable files
- Fixes Docker CI error: 'node\r': No such file or directory

Author: CI Fix

.gitattributes

@@ -0,0 +1,28 @@
+# Set default behavior to automatically normalize line endings.
+* text=auto
+
+# Force bash scripts to have unix line endings
+*.sh text eol=lf
+
+# Force bin files (executable scripts) to have unix line endings  
+bin/* text eol=lf
+
+# Ensure batch files on Windows keep CRLF line endings
+*.bat text eol=crlf
+
+# Binary files should not be modified
+*.png binary
+*.jpg binary
+*.jpeg binary
+*.gif binary
+*.ico binary
+*.pdf binary
+*.zip binary
+*.tar.gz binary
+*.tgz binary
+
+# Ensure package files are treated as text
+package.json text
+package-lock.json text
+*.md text
+*.txt text

bin/solid

@@ -1,3 +1,3 @@
-#!/usr/bin/env node
-import startCli from './lib/cli.js'
-startCli()
+#!/usr/bin/env node
+import startCli from './lib/cli.js'
+startCli()