fix(console): count spacing combining marks as one cell

Rich measures Indic marks like ि as zero width, so the --list panel border drifted on Hindi, Telugu and Tamil labels.

tests/core/test_console_cell_width.py

@@ -0,0 +1,24 @@
+"""Rich measures Indic spacing marks as one cell, so a panel border stays aligned after such a label."""
+
+from __future__ import annotations
+
+import io
+
+from rich.cells import cell_len
+from rich.console import Console
+from rich.panel import Panel
+
+import unshackle.core.console  # noqa: F401  # installs the cell width override
+
+
+def test_spacing_marks_take_one_cell() -> None:
+    assert cell_len("हिंदी") == 4  # two Mc marks count, the Mn anusvara does not
+    assert cell_len("தமிழ்") == 4
+    assert cell_len("ไทย") == 3
+
+
+def test_panel_pads_an_indic_label_to_the_border() -> None:
+    out = io.StringIO()
+    Console(file=out, width=20, color_system=None).print(Panel("हिंदी"))
+
+    assert out.getvalue().splitlines()[1] == "│ हिंदी" + " " * 12 + " │"

unshackle/core/console.py

@@ -4,10 +4,13 @@ import logging
 import math
 import shutil
 import sys
+import unicodedata
 from datetime import datetime
+from functools import lru_cache
 from types import ModuleType
 from typing import IO, Any, Callable, Iterable, List, Literal, Mapping, Optional, TextIO, Union
 
+import rich.cells
 from rich import box
 from rich._log_render import FormatTimeCallable, LogRender
 from rich.color import Color, blend_rgb
@@ -414,6 +417,18 @@ def force_utf8_streams() -> None:
 
 force_utf8_streams()
 
+_rich_cell_size = rich.cells.get_character_cell_size
+
+
+@lru_cache(maxsize=4096)
+def _cell_size(character: str, *args: str) -> int:
+    """Count a spacing combining mark (Mc, e.g. Devanagari ि) as one cell, as terminals draw it; Rich's table says 0."""
+    return 1 if unicodedata.category(character) == "Mc" else _rich_cell_size(character, *args)
+
+
+rich.cells.get_character_cell_size = _cell_size
+rich.cells.cached_cell_len.cache_clear()
+
 console = ComfyConsole(
     log_time=False,
     log_path=False,