fix(tui): address CodeRabbit review findings

- app.py: detect AGENTS.md/CLAUDE.md in the session work_dir (awaiting the
  async HostPath.exists) instead of process cwd, so the /init tip is correct
  when cwd differs from the session path.
- color_utils.py: replace EN DASH with ASCII hyphen in the luma docstring.
- slash.py: clarify the recaps config-flag guidance (--config vs --config-file).
- terminal_background.py: debug-log swallowed OSC11 probe failures instead of
  silently degrading, per the exception-handling rule.
- tests: annotate the autouse fixture return type; tighten the thinking-status
  metadata assertion to validate the token-count block, not just any paren.

Author: elkaix

src/pythinker_code/app.py

@@ -874,8 +874,9 @@ async def run_shell(
         # Repos without agent guidance benefit most from /init — surface the
         # tip emphasized (WARN renders bold) only when neither file exists.
         try:
-            work_dir = Path.cwd()
-            has_agent_docs = (work_dir / "AGENTS.md").exists() or (work_dir / "CLAUDE.md").exists()
+            has_agent_docs = (
+                await (work_dir / "AGENTS.md").exists() or await (work_dir / "CLAUDE.md").exists()
+            )
         except OSError:
             has_agent_docs = True
         if not has_agent_docs:

src/pythinker_code/ui/color_utils.py

@@ -39,7 +39,7 @@ def blend(fg: RGB, bg: RGB, alpha: float) -> RGB:
 
 
 def luma(rgb: RGB) -> float:
-    """ITU-R BT.601 perceived brightness in the 0–255 range."""
+    """ITU-R BT.601 perceived brightness in the 0-255 range."""
     return 0.299 * rgb[0] + 0.587 * rgb[1] + 0.114 * rgb[2]
 
 

src/pythinker_code/ui/shell/slash.py

@@ -1293,7 +1293,7 @@ def print_settings_table() -> None:
         if config_file is None:
             console.print(
                 f"[{_t_set.warning}]Toggling recaps requires a config file; "
-                f"restart without --config text to persist settings.[/]"
+                f"restart without --config (or use --config-file) to persist settings.[/]"
             )
             return
         try:

src/pythinker_code/ui/terminal_background.py

@@ -10,7 +10,7 @@
 
 from __future__ import annotations
 
-import contextlib
+import logging
 import os
 import re
 import select
@@ -24,6 +24,8 @@
 if TYPE_CHECKING:
     from pythinker_code.ui.theme import ThemeName
 
+_log = logging.getLogger(__name__)
+
 _OSC11_QUERY = "\x1b]11;?\x1b\\"
 # Reply shape: ``ESC ] 11 ; rgb:RRRR/GGGG/BBBB`` terminated by BEL or ST.
 # Components are 1-4 hex digits each (XParseColor scaling).
@@ -81,7 +83,8 @@ def _probe_uncached(timeout: float) -> RGB | None:
 
     try:
         old_attrs = termios.tcgetattr(fd)
-    except (termios.error, OSError):
+    except (termios.error, OSError) as exc:
+        _log.debug("OSC11 probe failed while reading terminal attrs", exc_info=exc)
         return None
     try:
         tty.setcbreak(fd)
@@ -102,13 +105,16 @@ def _probe_uncached(timeout: float) -> RGB | None:
             if "\x07" in buf or "\x1b\\" in buf:
                 break
         return parse_osc11_response(buf)
-    except (OSError, ValueError):
+    except (OSError, ValueError) as exc:
+        _log.debug("OSC11 probe failed during probe I/O", exc_info=exc)
         return None
     finally:
         # Never let restore failure escape — a raised tcsetattr here would
         # both crash startup and leave the terminal in cbreak mode anyway.
-        with contextlib.suppress(termios.error, OSError):
+        try:
             termios.tcsetattr(fd, termios.TCSADRAIN, old_attrs)
+        except (termios.error, OSError) as exc:
+            _log.debug("OSC11 probe failed to restore terminal mode", exc_info=exc)
 
 
 def probe_terminal_background(timeout: float = _PROBE_TIMEOUT_S) -> RGB | None:

tests/ui_and_conv/test_output_guards.py

@@ -2,6 +2,8 @@
 
 from __future__ import annotations
 
+from collections.abc import Iterator
+
 import pytest
 
 from pythinker_code.ui.shell.components import (
@@ -18,7 +20,7 @@
 
 
 @pytest.fixture(autouse=True)
-def _isolated_registry():
+def _isolated_registry() -> Iterator[None]:
     clear_tool_renderers()
     yield
     clear_tool_renderers()

tests/ui_and_conv/test_streaming_content_block.py

@@ -261,8 +261,8 @@ def test_thinking_status_line_uses_compact_activity_metadata():
     console = Console(record=True, width=120, color_system=None)
     console.print(block.compose())
     output = console.export_text()
-    assert "Thinking…" in output
-    assert "(" in output and ")" in output
+    assert "Thinking… (" in output
+    assert "tokens" in output
     assert "esc to interrupt" not in output