Refactor code structure for improved readability and maintainability

data/pdf_chunks/page_8.txt

@@ -0,0 +1,47 @@
+=== 第 8 页切片结果 ===
+图片: page_8.png
+MD5: b1bbea8b2299d31d99e5213e8511e935
+文本长度: 754 字符
+切片大小: 500 字符
+切片数量: 2 个
+
+--- Chunk 0 ---
+长度: 500 字符
+内容:
+!!n!4 KL#hi?@t)k7""48Xp5DkR8MUfD|wMTNoMwk?MOO#
+-KLO?@t)k7"N48Xp5DkR8MUfD|wMTNo?N7.H7#
+< ’!,-./0TUVWX?12
+"$’$"!’()
+12345Z~CghW.kPQ?mno$<5GCgh<s2Hm$ghWb*p?R2il
+%=a!4B[SPT9"RT)*?4Us?VW&v~p\&00 W]\!"00#
+"$’$(!*+5
+U#’gXpXb120)?12345$C56".56N$_WYZW56k[B?i+$q
+&$(%pq+56&56mvZ~\Zt]pq+6?;#
+"$"!@91
+"$"$!!=>@91
+12345q&$)%str/’56&ls56m$Z~^d#
+"$"$$!34@91
+"$"$$$!!5#34?@91
+12345q&$*%C"uv?r/’56&ls56m$Z~C"^d#
+"$"$$$$!5]34?@91
+12345q&$!+%CNuv?r/’56&ls56m$Z~CN^d#
+"$(!+5
+"$($!!67895
+MC)_wxWyz)?[\"[]"[jn$CqM.NRSls56m
+
+--- Chunk 1 ---
+长度: 254 字符
+内容:
+$Z~HF78"‘["G
+HW@?8IWa7~C?#b#
+"$($$!:;<=
+)\{|EFGHI?{|}~~bBc(+B d0jZ[B#
+"$($’!>?v@
+"$($’$!!ABCDEF~GH
+a3DEFm3&WIJ?)*m$DEFH~C3gef’?.gW=h$ijK.2DEFk
+]"l‘+?\pk]mf#.gZ~nPDEF~C?ef$\pk]mfTDEFclVZ~p
+\DEFof?"$&p$bDEF\pk]mf.gXb~CUqC3gFBof?afsrs_~
+C?ef#
+%
+!"!"#"#!$%%&
+