fix: add .gitattributes to enforce LF endings on plugin scripts (#1342)

Without .gitattributes, building on Windows produces plugin scripts with
CRLF line endings. The CRLF on the shebang line causes
"env: node\r: No such file or directory" on macOS/Linux, breaking the
MCP server and all hook scripts. Add text=auto eol=lf as the global
default plus explicit eol=lf rules for plugin/scripts/*.cjs and *.js.

Generated by Claude Code
Vibe coded by ousamabenyounes

Co-Authored-By: Claude <noreply@anthropic.com>

.gitattributes

@@ -0,0 +1,21 @@
+# Normalize all text files to LF on commit and checkout.
+# This prevents CRLF shebang lines in bundled scripts from breaking
+# the MCP server on macOS/Linux when built on Windows. Fixes #1342.
+* text=auto eol=lf
+
+# Compiled plugin scripts must always be LF — CRLF in the shebang
+# causes "env: node\r: No such file or directory" on non-Windows hosts.
+plugin/scripts/*.cjs eol=lf
+plugin/scripts/*.js  eol=lf
+
+# Explicitly mark binary assets so git never modifies them.
+*.png  binary
+*.jpg  binary
+*.jpeg binary
+*.ico  binary
+*.gif  binary
+*.woff  binary
+*.woff2 binary
+*.ttf   binary
+*.eot   binary
+*.otf   binary