chore: fix fuzz tests

Author: nicholasjpaterno

crates/turbomcp-protocol/fuzz/fuzz_targets/fuzz_capability_parsing.rs

@@ -85,6 +85,9 @@ fuzz_target!(|data: &[u8]| {
                 name: "fuzz-client".to_string(),
                 title: None,
                 version: "1.0.0".to_string(),
+                description: None,
+                icons: None,
+                website_url: None,
             },
             _meta: None,
         };
@@ -100,6 +103,9 @@ fuzz_target!(|data: &[u8]| {
                 name: "fuzz-server".to_string(),
                 title: None,
                 version: "1.0.0".to_string(),
+                description: None,
+                icons: None,
+                website_url: None,
             },
             instructions: Some("Fuzz test instructions".to_string()),
             _meta: None,

crates/turbomcp-protocol/fuzz/fuzz_targets/fuzz_tool_deserialization.rs

@@ -96,6 +96,7 @@ fuzz_target!(|data: &[u8]| {
             output_schema: None,
             execution,
             annotations,
+            icons: None,
             meta: None,
         };