fix: write LF line endings on every platform

.gitattributes now normalizes all text files to LF (with binary
overrides for images and fonts), and every write_text call in the
scripts, scaffold and site builder passes newline="\n", so runs on
Windows produce the same bytes as Linux CI.

Closes #127

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: TMHSDigital <154358121+TMHSDigital@users.noreply.github.com>

Author: TMHSDigital

.gitattributes

@@ -1,5 +1,19 @@
+# Normalize every text file to LF in the repo and the working tree, so
+# scripts run on Windows produce byte-identical output to Linux CI.
+* text=auto eol=lf
+
 VERSION text eol=lf
 *.sh text eol=lf
 *.py text eol=lf
 *.yml text eol=lf
 *.yaml text eol=lf
+
+# Binary assets
+*.png binary
+*.jpg binary
+*.jpeg binary
+*.gif binary
+*.ico binary
+*.webp binary
+*.woff binary
+*.woff2 binary

scaffold/generator.py

@@ -111,7 +111,7 @@ def render_template(env: Environment, template_name: str, context: dict) -> str:
 def write_file(base: Path, rel_path: str, content: str, *, verbose: bool = True) -> None:
     full = base / rel_path
     full.parent.mkdir(parents=True, exist_ok=True)
-    full.write_text(content, encoding="utf-8")
+    full.write_text(content, encoding="utf-8", newline="\n")
     if verbose:
         print(f"  created {rel_path}")
 
@@ -361,7 +361,9 @@ def register_in_registry(
 
     entries.append(entry)
     registry_path.write_text(
-        json.dumps(entries, indent=2, ensure_ascii=False) + "\n", encoding="utf-8"
+        json.dumps(entries, indent=2, ensure_ascii=False) + "\n",
+        encoding="utf-8",
+        newline="\n",
     )
     if verbose:
         print(f"  registered {entry['slug']} in {registry_path}")

scripts/add_comment_marker.py

@@ -42,7 +42,7 @@ def main(argv: list[str]) -> int:
         print(f"error: standards-version marker not found in {path}", file=sys.stderr)
         return 1
 
-    path.write_text(updated, encoding="utf-8")
+    path.write_text(updated, encoding="utf-8", newline="\n")
     print(f"updated {path}")
     return 0
 

scripts/add_frontmatter.py

@@ -56,7 +56,7 @@ def main(argv: list[str]) -> int:
         print(f"error: standards-version not found in frontmatter of {path}", file=sys.stderr)
         return 1
 
-    path.write_text(updated, encoding="utf-8")
+    path.write_text(updated, encoding="utf-8", newline="\n")
     print(f"updated {path}")
     return 0
 

scripts/drift_check/cli.py

@@ -414,7 +414,7 @@ def main(argv: Optional[Sequence[str]] = None) -> int:
         if args.output == "-":
             sys.stdout.write(out_text)
         else:
-            Path(args.output).write_text(out_text, encoding="utf-8")
+            Path(args.output).write_text(out_text, encoding="utf-8", newline="\n")
 
     if args.update_sticky_issue:
         if not gh_token:

site-template/build_site.py

@@ -366,7 +366,7 @@ def main():
     html = template.render(**context)
 
     out_dir.mkdir(parents=True, exist_ok=True)
-    (out_dir / "index.html").write_text(html, encoding="utf-8")
+    (out_dir / "index.html").write_text(html, encoding="utf-8", newline="\n")
     print(f"Wrote {out_dir / 'index.html'}")
 
     fonts_src = template_dir / "fonts"