consolidated langgraph integrations into all providers (#1973)

Replaces #1951

Author: lnhsingh

src/docs.json

@@ -312,7 +312,7 @@
                   "tab": "Integrations",
                   "pages": [
                     "oss/python/integrations/providers/overview",
-                    "oss/python/langgraph/integrations","oss/python/integrations/providers/all_providers",
+                    "oss/python/integrations/providers/all_providers",
                     {
                       "group": "Popular Providers",
                       "icon": "user-group",
@@ -651,7 +651,6 @@
                   "tab": "Integrations",
                   "pages": [
                     "oss/javascript/integrations/providers/overview",
-                    "oss/javascript/langgraph/integrations",
                     "oss/javascript/integrations/providers/all_providers",
                     {
                       "group": "Popular Providers",

src/oss/langgraph/integrations.mdx

@@ -281,6 +281,14 @@ Browse the complete collection of integrations available for Python. LangChain P
         Speech-to-text and audio intelligence API.
     </Card>
 
+    <Card
+        title="assistant-ui"
+        icon="file-code"
+        href="https://www.assistant-ui.com/docs/runtimes/langgraph"
+    >
+    React framework for building AI chat interfaces with streaming support and LangGraph integration.
+    </Card>
+
     <Card
         title="AstraDB"
         href="/oss/integrations/providers/astradb"
@@ -2042,11 +2050,11 @@ Browse the complete collection of integrations available for Python. LangChain P
     </Card>
 
     <Card
-        title="Open Agent Spec"
-        href="https://oracle.github.io/agent-spec/index.html"
+        title="Open Agent Spec (PyAgentSpec)"
+        href="https://oracle.github.io/agent-spec/adapters/langgraph.html"
         icon="link"
     >
-        Framework-agnostic language for portable agent definitions.
+        Framework-agnostic declarative language by Oracle for defining agentic systems. Define agents and workflows in a portable JSON/YAML format that can be executed across different runtimes.
     </Card>
 
     <Card