🐛 fix(tests): update user_shell_cmd test for marker overhead

- Updated head lines from 1-128 to 1-126 (126 lines)
- Updated tail lines from 273-400 to 274-400 (127 lines)
- Updated omitted count from 144 to 147 (400 - 253 = 147)
- Accounts for 3-line marker overhead in line truncation

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

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

Author: 0xRaduan

codex-rs/core/src/context_manager/history_tests.rs

@@ -385,7 +385,8 @@ fn format_exec_output_reports_omitted_lines_and_keeps_head_and_tail() {
     // With marker overhead (3 lines), available content lines = 256 - 3 = 253
     // Head: 126, Tail: 127, Omitted: 356 - 253 = 103
     const OMISSION_MARKER_LINES: usize = 3;
-    let available_content_lines = truncate::MODEL_FORMAT_MAX_LINES.saturating_sub(OMISSION_MARKER_LINES);
+    let available_content_lines =
+        truncate::MODEL_FORMAT_MAX_LINES.saturating_sub(OMISSION_MARKER_LINES);
     let omitted = total_lines - available_content_lines;
     let expected_marker = format!("[... omitted {omitted} of {total_lines} lines ...]");
 
@@ -418,7 +419,8 @@ fn format_exec_output_prefers_line_marker_when_both_limits_exceeded() {
     // With marker overhead (3 lines), available content lines = 256 - 3 = 253
     // Omitted: 298 - 253 = 45
     const OMISSION_MARKER_LINES: usize = 3;
-    let available_content_lines = truncate::MODEL_FORMAT_MAX_LINES.saturating_sub(OMISSION_MARKER_LINES);
+    let available_content_lines =
+        truncate::MODEL_FORMAT_MAX_LINES.saturating_sub(OMISSION_MARKER_LINES);
     let omitted = total_lines - available_content_lines;
     let expected_marker = format!("[... omitted {omitted} of {total_lines} lines ...]");
 

codex-rs/core/tests/suite/user_shell_cmd.rs

@@ -236,10 +236,12 @@ async fn user_shell_command_output_is_truncated_in_history() -> anyhow::Result<(
         .expect("command message recorded in request");
     let command_message = command_message.replace("\r\n", "\n");
 
-    let head = (1..=128).map(|i| format!("{i}\n")).collect::<String>();
-    let tail = (273..=400).map(|i| format!("{i}\n")).collect::<String>();
+    // With marker overhead (3 lines), available content lines = 256 - 3 = 253
+    // Head: 126, Tail: 127, Omitted: 400 - 253 = 147
+    let head = (1..=126).map(|i| format!("{i}\n")).collect::<String>();
+    let tail = (274..=400).map(|i| format!("{i}\n")).collect::<String>();
     let truncated_body =
-        format!("Total output lines: 400\n\n{head}\n[... omitted 144 of 400 lines ...]\n\n{tail}");
+        format!("Total output lines: 400\n\n{head}\n[... omitted 147 of 400 lines ...]\n\n{tail}");
     let escaped_command = escape(&command);
     let escaped_truncated_body = escape(&truncated_body);
     let expected_pattern = format!(