added file and link create

requirements.txt

@@ -1,7 +1,7 @@
 # Core Dependencies
 python-dotenv==1.0.0
-pydantic==2.5.0
-pydantic-settings==2.1.0
+pydantic==2.7.4
+pydantic-settings==2.3.0
 
 # AI & APIs
 openai==1.54.0
@@ -41,5 +41,11 @@ uvicorn==0.32.0
 jinja2==3.1.4
 python-multipart==0.0.9
 
+# Link Extraction
+trafilatura==1.7.0
+youtube-transcript-api==0.6.2
+pypdf==4.2.0
+docling==2.74.0
+
 # Teams Bot JWT validation
 PyJWT>=2.8.0