Improves script execution from different directories

Updates the script to locate necessary files and directories
relative to the script's execution point, allowing it to run
correctly whether invoked from the root or book/ directory.
This change enhances the script's flexibility and usability
within the project's directory structure.

book/tools/scripts/utilities/validate_part_keys.py

@@ -20,16 +20,27 @@ from typing import Dict, List, Set, Tuple
 
 def load_part_summaries() -> Dict:
     """Load part summaries from YAML file."""
-    yaml_path = Path("book/quarto/contents/parts/summaries.yml")
-    if not yaml_path.exists():
-        print("❌ Error: book/quarto/contents/parts/summaries.yml not found")
+    # Try multiple possible paths to handle being run from root or book/
+    possible_paths = [
+        Path("quarto/contents/parts/summaries.yml"),
+        Path("book/quarto/contents/parts/summaries.yml")
+    ]
+    
+    yaml_path = None
+    for p in possible_paths:
+        if p.exists():
+            yaml_path = p
+            break
+            
+    if not yaml_path:
+        print("❌ Error: summaries.yml not found in expected locations")
         return {}
 
     try:
         with open(yaml_path, 'r') as f:
             data = yaml.safe_load(f)
             if 'parts' not in data:
-                print("❌ Error: No 'parts' section in part_summaries.yml")
+                print("❌ Error: No 'parts' section in summaries.yml")
                 return {}
 
             # Create a mapping of normalized keys to entries
@@ -41,16 +52,27 @@ def load_part_summaries() -> Dict:
 
             return summaries
     except Exception as e:
-        print(f"❌ Error loading part_summaries.yml: {e}")
+        print(f"❌ Error loading summaries.yml: {e}")
         return {}
 
 def find_qmd_files() -> List[Path]:
     """Find all .qmd files in the quarto directory."""
     qmd_files = []
-    book_dir = Path("book/quarto")
+    
+    # Try multiple possible paths to handle being run from root or book/
+    possible_dirs = [
+        Path("quarto"),
+        Path("book/quarto")
+    ]
+    
+    book_dir = None
+    for d in possible_dirs:
+        if d.exists():
+            book_dir = d
+            break
 
-    if not book_dir.exists():
-        print("❌ Error: book/quarto directory not found")
+    if not book_dir:
+        print("❌ Error: quarto directory not found")
         return []
 
     # Find all .qmd files recursively