models/public: Remove default None for name and size fields

- Changed `name` and `size` in the font style model from `Optional` to
  required fields.
- Simplified downstream usage by ensuring these fields are always
  defined.

examples/extract_text: Simplify font formatting logic

- Updated `_format_font` to remove conditional checks for `None` values,
  as `name` and `size` are now guaranteed to be present in the font
  style model.

Assisted-by: Codex

Author: datalogics-kam

examples/extract_text/extract_pdf_text_example.py

@@ -51,12 +51,10 @@ def _format_color(word: ExtractedTextWord) -> str:
 
 def _format_font(word: ExtractedTextWord) -> str:
     style = word.style
-    if style is None or style.font is None:
+    if style is None:
         return "—"
     font = style.font
-    name = font.name or "Unknown"
-    size = f"{font.size:.1f} pt" if font.size is not None else "Unknown size"
-    return f"{name} ({size})"
+    return f"{font.name} ({font.size:.1f} pt)"
 
 
 def _build_word_table(document: ExtractedTextDocument) -> Table:

src/pdfrest/models/public.py

@@ -519,19 +519,13 @@ class ExtractedTextWordFont(BaseModel):
     model_config = ConfigDict(extra="allow")
 
     name: Annotated[
-        str | None,
-        Field(
-            description="Reported font face name.",
-            default=None,
-        ),
-    ] = None
+        str,
+        Field(description="Reported font face name."),
+    ]
     size: Annotated[
-        float | None,
-        Field(
-            description="Font size in points.",
-            default=None,
-        ),
-    ] = None
+        float,
+        Field(description="Font size in points."),
+    ]
 
 
 class ExtractedTextWordStyle(BaseModel):