cli: restore line range in read_file pretty summary

src/plyngent/cli/display.py

@@ -154,7 +154,7 @@ def _pretty_line(prefix: str, *segments: tuple[str, str | None]) -> str:
 
 
 def _read_file_pretty(args_json: str, result: str) -> str:
-    """One-line summary for a ``read_file`` call: ``* Read 'path' (done)``."""
+    """One-line summary for a ``read_file`` call: ``* Read 'path' L1-4 (done)``."""
     path = _json_str_arg(args_json, "path") or "?"
     if result.startswith("error: file not found"):
         return _pretty_line(f"* Read '{path}' ", ("(file not found)", "red"))
@@ -162,6 +162,9 @@ def _read_file_pretty(args_json: str, result: str) -> str:
         return _pretty_line(f"* Read '{path}' ", ("(not a file)", "red"))
     if result.startswith("error:"):
         return _pretty_line(f"* Read '{path}' ", ("(error)", "red"))
+    first = result.splitlines()[0] if result.splitlines() else ""
+    if first.startswith("L") and "-" in first:
+        return _pretty_line(f"* Read '{path}' ", (f"{first} ", "dim"), ("(done)", "green"))
     return _pretty_line(f"* Read '{path}' ", ("(done)", "green"))
 
 

tests/test_cli/test_display.py

@@ -98,11 +98,19 @@ def _result(content: str) -> ToolResultEvent:
 async def test_pretty_read_file_done(capsys: pytest.CaptureFixture[str]) -> None:
     await render_events(_aiter([_read_call('{"path": "a.txt"}'), _result("L1-4\none\ntwo\n")]))
     out = capsys.readouterr().out
-    assert "* Read 'a.txt' (done)" in out
+    assert "* Read 'a.txt' L1-4 (done)" in out
     assert "[tool]" not in out
     assert "[tool ok]" not in out
 
 
+async def test_pretty_read_file_numbered_no_range(capsys: pytest.CaptureFixture[str]) -> None:
+    """Numbered reads carry no L header, so the summary falls back to ``(done)``."""
+    content = "    1|one\n    2|two\n"
+    await render_events(_aiter([_read_call('{"path": "a.txt", "with_lineno": true}'), _result(content)]))
+    out = capsys.readouterr().out
+    assert "* Read 'a.txt' (done)" in out
+
+
 async def test_pretty_read_file_statuses(capsys: pytest.CaptureFixture[str]) -> None:
     cases = [
         ("error: file not found: a.txt", "(file not found)"),