Add compatibility tests for new sampling tool types

- Add type checks for ToolChoice, ToolUseContent, ToolResultContent, SamplingMessageContentBlock
- Update expected spec types count from 119 to 123

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

Co-Authored-By: Claude <noreply@anthropic.com>

Author: ochafik

src/spec.types.test.ts

@@ -587,6 +587,22 @@ const sdkTypeChecks = {
     ModelPreferences: (sdk: SDKTypes.ModelPreferences, spec: SpecTypes.ModelPreferences) => {
         sdk = spec;
         spec = sdk;
+    },
+    ToolChoice: (sdk: SDKTypes.ToolChoice, spec: SpecTypes.ToolChoice) => {
+        sdk = spec;
+        spec = sdk;
+    },
+    ToolUseContent: (sdk: SDKTypes.ToolUseContent, spec: SpecTypes.ToolUseContent) => {
+        sdk = spec;
+        spec = sdk;
+    },
+    ToolResultContent: (sdk: SDKTypes.ToolResultContent, spec: SpecTypes.ToolResultContent) => {
+        sdk = spec;
+        spec = sdk;
+    },
+    SamplingMessageContentBlock: (sdk: SDKTypes.SamplingMessageContentBlock, spec: SpecTypes.SamplingMessageContentBlock) => {
+        sdk = spec;
+        spec = sdk;
     }
 };
 
@@ -615,7 +631,7 @@ describe('Spec Types', () => {
     it('should define some expected types', () => {
         expect(specTypes).toContain('JSONRPCNotification');
         expect(specTypes).toContain('ElicitResult');
-        expect(specTypes).toHaveLength(119);
+        expect(specTypes).toHaveLength(123);
     });
 
     it('should have up to date list of missing sdk types', () => {