Update table.py

Adds header_margin and footer_margin keyword-arguments to page.find_tables(), letting callers ignore running headers/footers without manually building a clip rectangle. Parameters after page are now keyword-only to keep all existing code that omits the new args fully backward-compatible.

Author: BBC-Esq

src/table.py

@@ -2348,7 +2348,10 @@ def page_rotation_reset(page, xref, rot, mediabox):
 
 def find_tables(
     page,
+    *, # ← forces keyword use
     clip=None,
+    header_margin: float = 0,
+    footer_margin: float = 0,
     vertical_strategy: str = "lines",
     horizontal_strategy: str = "lines",
     vertical_lines: list = None,
@@ -2376,6 +2379,10 @@ def find_tables(
     global CHARS, EDGES
     CHARS = []
     EDGES = []
+    if clip is None and (header_margin or footer_margin):
+        clip = Rect(page.rect)
+        clip.y0 += header_margin
+        clip.y1 -= footer_margin
     old_small = bool(TOOLS.set_small_glyph_heights())  # save old value
     TOOLS.set_small_glyph_heights(True)  # we need minimum bboxes
     if page.rotation != 0: