feat: aggiunge CLI unificata, build vocabolario e filtro lessicale

crossword_generator.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
+import locale
 import sys
 import time
 from typing import Dict, Iterable, List, Optional, Sequence, Set, Tuple
@@ -36,6 +37,8 @@ WORDS = [
 HORIZONTAL = "H"
 VERTICAL = "V"
 DIFFXY = 7
+EMPTY_CELL_RENDER = "□"
+EMPTY_CELL_FALLBACK = "#"
 
 
 @dataclass(frozen=True)
@@ -361,6 +364,9 @@ def render_grid(grid: Grid, placements: Sequence[Placement]) -> str:
     if not grid:
         return "(griglia vuota)"
 
+    encoding = (getattr(sys.stdout, "encoding", None) or locale.getpreferredencoding(False) or "").lower()
+    empty_cell = EMPTY_CELL_RENDER if "utf" in encoding else EMPTY_CELL_FALLBACK
+
     x_min = min(x for x, _ in grid)
     x_max = max(x for x, _ in grid)
     y_min = min(y for _, y in grid)
@@ -373,7 +379,7 @@ def render_grid(grid: Grid, placements: Sequence[Placement]) -> str:
     for y in range(y_min, y_max + 1):
         row = [f"{y:>3} "]
         for x in range(x_min, x_max + 1):
-            row.append(grid.get((x, y), ".").upper().rjust(2))
+            row.append(grid.get((x, y), empty_cell).upper().rjust(2))
         lines.append(" ".join(row))
 
     lines.append("")