fix(tui): 优化 Bash 运行中状态 UI 显示

peri-tui/src/ui/message_render.rs

@@ -9,7 +9,7 @@ use super::{
 };
 use crate::app::tool_display::sanitize_display_text;
 
-pub(crate) const CONTROL_B_BACKGROUND_HINT: &str = "(Ctrl+B to run in background)";
+pub(crate) const CONTROL_B_BACKGROUND_HINT: &str = "(ctrl+b to run in background)";
 
 /// 从 Bash 工具输出中解析 exit code。
 ///
@@ -944,10 +944,13 @@ pub fn render_view_model(
                 };
                 lines.push(Line::from(vec![
                     Span::styled("  ⎿ ", Style::default().fg(theme::DIM)),
-                    Span::styled(elapsed_str, Style::default().fg(theme::MUTED)),
+                    Span::styled(
+                        format!("Running… {}", elapsed_str),
+                        Style::default().fg(theme::MUTED),
+                    ),
                 ]));
                 lines.push(Line::from(vec![
-                    Span::styled("  ⎿ ", Style::default().fg(theme::DIM)),
+                    Span::styled("    ", Style::default().fg(theme::DIM)),
                     Span::styled(CONTROL_B_BACKGROUND_HINT, Style::default().fg(theme::MUTED)),
                 ]));
             }

peri-tui/src/ui/message_render_test.rs

@@ -370,15 +370,46 @@
             collapsed: true,
             color: crate::ui::theme::SAGE,
             diff_input: None,
-            started_at: Some(std::time::Instant::now() - std::time::Duration::from_secs(3)),
+            started_at: Some(std::time::Instant::now() - std::time::Duration::from_secs(39)),
             content_hash: 0,
         };
         let lines = render_view_model(&vm, Some(1), 80, false, 0);
+        let rendered_lines: Vec<String> = lines
+            .iter()
+            .map(|line| {
+                line.spans
+                    .iter()
+                    .map(|span| span.content.as_ref())
+                    .collect::<String>()
+            })
+            .collect();
         let text = rendered_text(&lines);
         assert!(
             text.contains(crate::ui::message_render::CONTROL_B_BACKGROUND_HINT),
             "运行超过 2 秒的 Bash ToolBlock 应显示 Ctrl+B 提示: {text:?}"
         );
+        assert!(
+            rendered_lines[0].contains("● Bash(python wuhan_weather.py)"),
+            "Bash ToolBlock header 应保留运行中圆点和命令摘要: {rendered_lines:?}"
+        );
+        assert!(
+            rendered_lines
+                .iter()
+                .any(|line| line.contains("⎿ Running… (39s)")),
+            "Bash 运行状态应显示 Running… 和已运行时间: {rendered_lines:?}"
+        );
+        assert!(
+            rendered_lines
+                .iter()
+                .any(|line| line == "    (ctrl+b to run in background)"),
+            "Ctrl+B 提示应作为缩进行显示，不应重复 ⎿: {rendered_lines:?}"
+        );
+        assert!(
+            !rendered_lines
+                .iter()
+                .any(|line| line.contains("⎿ (ctrl+b to run in background)")),
+            "Ctrl+B 提示行不应再带 ⎿ 前缀: {rendered_lines:?}"
+        );
     }
 
     #[test]

peri-tui/src/ui/render_thread_test.rs

@@ -940,4 +940,27 @@ fn test_refresh_running_bash_toolblock_adds_control_b_hint_after_threshold() {
             .any(|span| span.content.as_ref().contains(CONTROL_B_BACKGROUND_HINT))),
         "超过 2 秒后缓存中应出现 Ctrl+B 提示"
     );
+    let rendered_lines: Vec<String> = cache
+        .read()
+        .lines
+        .iter()
+        .map(|line| {
+            line.spans
+                .iter()
+                .map(|span| span.content.as_ref())
+                .collect::<String>()
+        })
+        .collect();
+    assert!(
+        rendered_lines
+            .iter()
+            .any(|line| line.contains("⎿ Running…")),
+        "超过 2 秒后缓存中应出现 Running 状态行: {rendered_lines:?}"
+    );
+    assert!(
+        rendered_lines
+            .iter()
+            .any(|line| line == "    (ctrl+b to run in background)"),
+        "Ctrl+B 提示应作为缩进行缓存: {rendered_lines:?}"
+    );
 }