fix: lint errors (line length, trailing whitespace, variable naming)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: gzenz

code_review_graph/communities.py

@@ -624,8 +624,9 @@ def store_communities(
         count = 0
         for comm in communities:
             cursor = conn.execute(
-                """INSERT INTO communities (name, level, cohesion, size, dominant_language, description)
-                   VALUES (?, ?, ?, ?, ?, ?)""",
+                "INSERT INTO communities"
+                " (name, level, cohesion, size, dominant_language, description)"
+                " VALUES (?, ?, ?, ?, ?, ?)",
                 (
                     comm["name"],
                     comm.get("level", 0),

code_review_graph/parser.py

@@ -3341,7 +3341,7 @@ def _get_name(self, node, language: str, kind: str) -> Optional[str]:
         if language == "go" and node.type == "method_declaration":
             for child in node.children:
                 if child.type == "field_identifier":
-                    return child.text.decode("utf-8", errors="replace")                        
+                    return child.text.decode("utf-8", errors="replace")
         # Most languages use a 'name' child
         for child in node.children:
             if child.type in (

code_review_graph/skills.py

@@ -478,14 +478,14 @@ def install_git_hook(repo_root: Path) -> Path | None:
     existing one — preserving any hooks already there. Returns None when no
     ``.git`` directory is found.
     """
-    _SCRIPT = """\
+    script = """\
 #!/bin/sh
 # Installed by code-review-graph. Remove this file to disable pre-commit graph checks.
 if command -v code-review-graph >/dev/null 2>&1; then
     code-review-graph detect-changes --brief || true
 fi
 """
-    _MARKER = "code-review-graph detect-changes"
+    marker = "code-review-graph detect-changes"
 
     git_dir = repo_root / ".git"
     if not git_dir.is_dir():
@@ -497,11 +497,11 @@ def install_git_hook(repo_root: Path) -> Path | None:
 
     if hook_path.exists():
         existing = hook_path.read_text(encoding="utf-8")
-        if _MARKER in existing:
+        if marker in existing:
             return hook_path
-        hook_path.write_text(existing.rstrip("\n") + "\n" + _SCRIPT, encoding="utf-8")
+        hook_path.write_text(existing.rstrip("\n") + "\n" + script, encoding="utf-8")
     else:
-        hook_path.write_text(_SCRIPT, encoding="utf-8")
+        hook_path.write_text(script, encoding="utf-8")
 
     hook_path.chmod(0o755)
     logger.info("Wrote git pre-commit hook: %s", hook_path)