Revert model name changes from 9b02aaf

Partially revert commit 9b02aaf
which accidentally changed model references from claude-sonnet-4-20250514
back to claude-3-5-sonnet-20241022 across documentation.

This restores the correct Claude Sonnet 4 model references in:
- docs/docs/develop/build-client.mdx
- docs/docs/learn/client-concepts.mdx
- docs/tutorials/building-a-client-node.mdx

The other changes in 9b02aaf (blog post, .gitignore, go.mod) remain intact.

Note: Typos and grammar issues from 9b02aaf were already fixed in later commits.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: dsp-ant

docs/docs/develop/build-client.mdx

@@ -178,7 +178,7 @@ async def process_query(self, query: str) -> str:
 
     # Initial Claude API call
     response = self.anthropic.messages.create(
-        model="claude-3-5-sonnet-20241022",
+        model="claude-sonnet-4-20250514",
         max_tokens=1000,
         messages=messages,
         tools=available_tools
@@ -218,7 +218,7 @@ async def process_query(self, query: str) -> str:
 
             # Get next response from Claude
             response = self.anthropic.messages.create(
-                model="claude-3-5-sonnet-20241022",
+                model="claude-sonnet-4-20250514",
                 max_tokens=1000,
                 messages=messages,
                 tools=available_tools
@@ -647,7 +647,7 @@ async processQuery(query: string) {
   ];
 
   const response = await this.anthropic.messages.create({
-    model: "claude-3-5-sonnet-20241022",
+    model: "claude-sonnet-4-20250514",
     max_tokens: 1000,
     messages,
     tools: this.tools,
@@ -676,7 +676,7 @@ async processQuery(query: string) {
       });
 
       const response = await this.anthropic.messages.create({
-        model: "claude-3-5-sonnet-20241022",
+        model: "claude-sonnet-4-20250514",
         max_tokens: 1000,
         messages,
       });
@@ -1230,7 +1230,7 @@ Now let's add the core functionality for processing queries and handling tool ca
 
 ```kotlin
 private val messageParamsBuilder: MessageCreateParams.Builder = MessageCreateParams.builder()
-    .model(Model.CLAUDE_3_5_SONNET_20241022)
+    .model(Model.CLAUDE_SONNET_4_20250514)
     .maxTokens(1024)
 
 suspend fun processQuery(query: String): String {
@@ -1565,7 +1565,7 @@ using var anthropicClient = new AnthropicClient(new APIAuthentication(builder.Co
 var options = new ChatOptions
 {
     MaxOutputTokens = 1000,
-    ModelId = "claude-3-5-sonnet-20241022",
+    ModelId = "claude-sonnet-4-20250514",
     Tools = [.. tools]
 };
 

docs/docs/learn/client-concepts.mdx

@@ -203,7 +203,7 @@ The flow ensures security through multiple human-in-the-loop checkpoints. Users
   ],
   modelPreferences: {
     hints: [{
-      name: "claude-3-5-sonnet"  // Suggested model
+      name: "claude-sonnet-4-20250514"  // Suggested model
     }],
     costPriority: 0.3,      // Less concerned about API cost
     speedPriority: 0.2,     // Can wait for thorough analysis

docs/tutorials/building-a-client-node.mdx

@@ -192,7 +192,7 @@ Now add the core functionality for processing queries and handling tool calls:
 
     const finalText: string[] = [];
     let currentResponse = await this.anthropic.messages.create({
-      model: "claude-3-5-sonnet-20241022",
+      model: "claude-sonnet-4-20250514",
       max_tokens: 1000,
       messages,
       tools: availableTools,
@@ -246,7 +246,7 @@ Now add the core functionality for processing queries and handling tool calls:
 
           // Get next response from Claude with tool results
           currentResponse = await this.anthropic.messages.create({
-            model: "claude-3-5-sonnet-20241022",
+            model: "claude-sonnet-4-20250514",
             max_tokens: 1000,
             messages,
             tools: availableTools,