feat: add PDF extractor tool

tools/pdf_extractor.py

@@ -0,0 +1,30 @@
+from smolagents import tool
+import PyPDF2
+
+
+@tool
+def extract_text_from_pdf(pdf_path: str) -> str:
+    """Extracts all text content from a PDF file.
+
+    Args:
+        pdf_path: The file path to the PDF file to extract text from (e.g., '/tmp/document.pdf')
+
+    Returns:
+        The extracted text content from the PDF file
+    """
+    try:
+        extracted_text = []
+        with open(pdf_path, 'rb') as pdf_file:
+            pdf_reader = PyPDF2.PdfReader(pdf_file)
+            num_pages = len(pdf_reader.pages)
+            
+            for page_num in range(num_pages):
+                page = pdf_reader.pages[page_num]
+                text = page.extract_text()
+                extracted_text.append(f"--- Page {page_num + 1} ---\n{text}")
+
+        return "\n\n".join(extracted_text)
+    except FileNotFoundError:
+        return f"Error: PDF file not found at path: {pdf_path}"
+    except Exception as e:
+        return f"Error extracting text from PDF: {str(e)}"