test(integration): add signature field to ContentBlock::Thinking initializers and pattern in tests/ — the bins-only local run missed integration-test targets when the field landed

Co-Authored-By: Claude <noreply@anthropic.com>
https://claude.ai/code/session_018zaP8vUfTAsrE38L6h6fw5

crates/tui/tests/integration_mock_llm.rs

@@ -79,6 +79,7 @@ fn assistant_thinking(thinking: &str, text: &str) -> Message {
         content: vec![
             ContentBlock::Thinking {
                 thinking: thinking.to_string(),
+                signature: None,
             },
             ContentBlock::Text {
                 text: text.to_string(),
@@ -246,7 +247,7 @@ async fn reasoning_replay_required_on_subsequent_turn() {
         .content
         .iter()
         .find_map(|b| match b {
-            ContentBlock::Thinking { thinking } => Some(thinking.clone()),
+            ContentBlock::Thinking { thinking, .. } => Some(thinking.clone()),
             _ => None,
         })
         .expect("Thinking block present");

crates/tui/tests/reasoning_content_replayed_after_tool_call.rs

@@ -32,6 +32,7 @@ fn assistant_thinking_tool_call(
         content: vec![
             ContentBlock::Thinking {
                 thinking: thinking.to_string(),
+                signature: None,
             },
             ContentBlock::ToolUse {
                 id: id.to_string(),