Prevent CLRF line endings with pre-commit hook (#29169)

* test: verify CRLF hook

* chore: remove CRLF hook test file

* line ending pre-commit hook

* add CI check for line endings as well

* test: spaces in filename

* chore: remove spaces filename test file

* remove compile changes

* just check the whole repo

* dont need to scope it to specific files

---------

Co-authored-by: test <test@test.com>

Author: mvvmm

.github/workflows/ci.yml

@@ -107,6 +107,13 @@ jobs:
           node-version: 22.x
           cache: npm
 
+      - name: Check for CRLF line endings
+        run: |
+          if git grep -Il $'\r'; then
+            echo "::error::CRLF line endings detected. Configure your editor to use LF line endings (this repo has an .editorconfig file that most editors respect automatically)."
+            exit 1
+          fi
+
       - run: |
           FILES=$(
             find src/content \

.husky/pre-commit

@@ -0,0 +1,32 @@
+#!/bin/sh
+# Convert CRLF to LF in all staged files before committing.
+# This guards against AI tooling and Windows environments introducing CRLF.
+
+STAGED=$(git diff --cached --name-only)
+
+if [ -z "$STAGED" ]; then
+  exit 0
+fi
+
+FIXED=0
+
+while IFS= read -r file; do
+  # Skip files that no longer exist on disk (e.g. deleted files)
+  if [ ! -f "$file" ]; then
+    continue
+  fi
+
+  # Check for carriage returns
+  if grep -qU $'\r' "$file"; then
+    # perl -pi works cross-platform (macOS BSD and Linux GNU)
+    perl -pi -e 's/\r\n/\n/g; s/\r/\n/g' "$file"
+    FIXED=1
+  fi
+done << EOF
+$STAGED
+EOF
+
+if [ "$FIXED" = "1" ]; then
+  echo "pre-commit: CRLF line endings converted to LF in staged files."
+  git add --update
+fi

package-lock.json

@@ -28,7 +28,8 @@
 		"ai-setup:import-from-opencode": "npx rulesync import --targets opencode --features rules,commands,subagents",
 		"ai-setup:claudecode": "npm run ai-setup:import-from-opencode && npx rulesync generate --targets claudecode --features rules,commands,subagents",
 		"ai-setup:cursor": "npm run ai-setup:import-from-opencode && npx rulesync generate --targets cursor --features commands,subagents",
-		"ai-setup:copilot": "npm run ai-setup:import-from-opencode && npx rulesync generate --targets copilot --features commands,subagents"
+		"ai-setup:copilot": "npm run ai-setup:import-from-opencode && npx rulesync generate --targets copilot --features commands,subagents",
+		"prepare": "husky"
 	},
 	"devDependencies": {
 		"@actions/core": "1.11.1",
@@ -86,6 +87,7 @@
 		"hast-util-select": "6.0.4",
 		"hastscript": "9.0.1",
 		"he": "1.2.0",
+		"husky": "9.1.7",
 		"jsonc-parser": "3.3.1",
 		"ldrs": "1.1.7",
 		"lz-string": "1.5.0",