fix: clip inline blame instead of hiding long metadata

The full-label width check hid current-line attribution when only part of the commit metadata fit. Render into the remaining cells without covering source text; preserve offscreen and no-space guards.

tests/unit/tui.rs

@@ -6500,6 +6500,48 @@ fn inline_blame_is_visible_in_focused_diff_buffers() {
     }
 }
 
+#[test]
+fn inline_blame_remains_visible_on_lines_with_room_for_partial_metadata() {
+    let directory = Directory::new();
+    for (context, width) in [("document", 80), ("split", 180), ("unified", 120)] {
+        let text = "short\nlet meaningful_identifier = call_with_arguments();\ntail";
+        let mut editor = if context == "document" {
+            Editor::open(Some(directory.file("file.txt", text)), vec![]).unwrap()
+        } else {
+            let mut editor = readonly_diff_editor(syntax_diff_file("file.txt", text, "changed"));
+            if context == "unified" {
+                editor.execute("diff.view.toggle");
+            }
+            editor.handle(Input::Char('\t'));
+            editor
+        };
+        let source = editor.blame_source().unwrap();
+        let blame = Arc::new(crate::blame::LineBlame {
+            commit: "0123456789abcdef".into(),
+            author: "界 e\u{301} Author".into(),
+            summary: "A detailed commit summary describing the source change".into(),
+            uncommitted: false,
+        });
+        let mut terminal = Terminal::new(ratatui::backend::TestBackend::new(width, 12)).unwrap();
+        let mut views = BufferViewports::default();
+        for row in 0..3 {
+            assert_eq!(editor.cursor().row, row);
+            editor.set_cached_line_blame(&source, blame.clone());
+            terminal
+                .draw(|frame| views.draw(frame, &mut editor))
+                .unwrap();
+            let caret = terminal.get_cursor_position().unwrap();
+            let line = pane_screen(&terminal, Rect::new(0, caret.y, width, 1));
+            assert!(
+                line.contains("Author") && line.contains("e\u{301}"),
+                "{context}, source row={row}: {line}"
+            );
+            assert!(line.contains(editor.lines()[row].as_str()), "{line}");
+            editor.handle(Input::Down);
+        }
+    }
+}
+
 #[test]
 fn diff_blame_uses_final_wrap_and_survives_a_historical_tab() {
     for unified in [false, true] {