docs: Reorganize documentation structure

docs/api-reference-index.md

@@ -1,6 +1,8 @@
 # API Reference
 
-Complete reference documentation for all Redis Agent Memory Server interfaces.
+Complete reference documentation for all Redis Agent Memory Server interfaces and client SDKs.
+
+## Server Interfaces
 
 <div class="grid cards" markdown>
 
@@ -30,13 +32,46 @@ Complete reference documentation for all Redis Agent Memory Server interfaces.
 
 </div>
 
+## Client SDKs
+
+<div class="grid cards" markdown>
+
+-   🐍 **Python SDK**
+
+    ---
+
+    Async-first client with tool schemas for OpenAI and Anthropic
+
+    [Python SDK →](python-sdk.md)
+
+-   📘 **TypeScript SDK**
+
+    ---
+
+    Type-safe client for Node.js and browser applications
+
+    [TypeScript SDK →](typescript-sdk.md)
+
+-   ☕ **Java SDK**
+
+    ---
+
+    Java client for JVM applications
+
+    [Java SDK →](java-sdk.md)
+
+</div>
+
 ## Interface Comparison
 
 | Interface | Best For | Authentication |
 |-----------|----------|----------------|
 | REST API | Applications, backends, custom integrations | OAuth2/JWT or token |
 | MCP Server | Claude Desktop, MCP-compatible AI agents | Environment config |
 | CLI | Server administration, development | Local access |
+| Python SDK | Python applications with LLM tool integration | Token or OAuth2 |
+| TypeScript SDK | Node.js, browser, and TypeScript applications | Token or OAuth2 |
+| Java SDK | JVM-based applications | Token or OAuth2 |
 
 ## Interactive API Docs