unify NAPI and Python binding APIs for consistent surface

Both bindings now expose the same 6 function families: process, detect,
classify, extractText, extractTextWithPositions, and extractTextInRegions.
Bumps PyO3 from 0.22 to 0.25 for Python 3.14 support.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pdf_inspector.pyi

@@ -17,6 +17,15 @@ class PdfResult:
     pages_with_columns: list[int]
     has_encoding_issues: bool
 
+class PdfClassification:
+    """Lightweight PDF classification result."""
+    pdf_type: str
+    """'text_based', 'scanned', 'image_based', or 'mixed'."""
+    page_count: int
+    pages_needing_ocr: list[int]
+    """0-indexed page numbers that need OCR."""
+    confidence: float
+
 class TextItem:
     """A positioned text item extracted from a PDF."""
     text: str
@@ -31,6 +40,18 @@ class TextItem:
     is_italic: bool
     item_type: str
 
+class RegionText:
+    """Extracted text for a single region."""
+    text: str
+    needs_ocr: bool
+    """True when the text should not be trusted."""
+
+class PageRegionTexts:
+    """Extracted text for one page's regions."""
+    page: int
+    """0-indexed page number."""
+    regions: list[RegionText]
+
 def process_pdf(path: str, pages: Optional[list[int]] = None) -> PdfResult:
     """Process a PDF: detect type, extract text, convert to Markdown."""
     ...
@@ -47,10 +68,50 @@ def detect_pdf_bytes(data: bytes) -> PdfResult:
     """Fast detection from bytes."""
     ...
 
+def classify_pdf(path: str) -> PdfClassification:
+    """Lightweight classification — type, page count, and OCR pages (0-indexed)."""
+    ...
+
+def classify_pdf_bytes(data: bytes) -> PdfClassification:
+    """Lightweight classification from bytes."""
+    ...
+
 def extract_text(path: str) -> str:
     """Extract plain text from a PDF."""
     ...
 
+def extract_text_bytes(data: bytes) -> str:
+    """Extract plain text from PDF bytes."""
+    ...
+
 def extract_text_with_positions(path: str, pages: Optional[list[int]] = None) -> list[TextItem]:
     """Extract text with position information."""
     ...
+
+def extract_text_with_positions_bytes(data: bytes, pages: Optional[list[int]] = None) -> list[TextItem]:
+    """Extract text with position information from bytes."""
+    ...
+
+def extract_text_in_regions(
+    path: str,
+    page_regions: list[tuple[int, list[list[float]]]],
+) -> list[PageRegionTexts]:
+    """Extract text within bounding-box regions from a PDF file.
+
+    Args:
+        path: Path to the PDF file.
+        page_regions: List of (page_0indexed, [[x1, y1, x2, y2], ...]) tuples.
+    """
+    ...
+
+def extract_text_in_regions_bytes(
+    data: bytes,
+    page_regions: list[tuple[int, list[list[float]]]],
+) -> list[PageRegionTexts]:
+    """Extract text within bounding-box regions from PDF bytes.
+
+    Args:
+        data: PDF file contents as bytes.
+        page_regions: List of (page_0indexed, [[x1, y1, x2, y2], ...]) tuples.
+    """
+    ...