chore(docs): enable analytics, add consent banner & copyright notice (#3447)

docs/mkdocs.yml

@@ -468,6 +468,16 @@ markdown_extensions:
 hooks:
   - _scripts/notebook_hooks.py
 extra:
+  consent:
+    title: Cookie consent
+    actions:
+      - accept
+      - reject
+    description: >- 
+      We use cookies to recognize your repeated visits and preferences, as well
+      as to measure the effectiveness of our documentation and whether users
+      find what they're searching for. <strong>Clicking "Accept" makes our
+      documentation better. Thank you!</strong> ❤️
   social:
     - icon: fontawesome/brands/js
       link: https://langchain-ai.github.io/langgraphjs/
@@ -476,9 +486,9 @@ extra:
     - icon: fontawesome/brands/twitter
       link: https://twitter.com/LangChainAI
   analytics:
-    - provider: google
-    - property: G-G8X6ELZYE0
-    - feedback:
+    provider: google
+    property: G-WR87FQLG9F
+    feedback:
       title: Was this page helpful?
       ratings:
         - icon: material/emoticon-happy-outline
@@ -509,3 +519,5 @@ validation:
   anchors: info
   # this is needed to handle headers with anchors for nav
   not_found: info
+copyright: >
+  Copyright &copy; 2025 LangChain, Inc | <a href="#__consent">Consent Preferences</a>