diff --git a/_check_jumps.py b/_check_jumps.py
deleted file mode 100644
index 7aa73d2..0000000
--- a/_check_jumps.py
+++ /dev/null
@@ -1,28 +0,0 @@
-import os
-
-outdir = os.path.join(os.path.dirname(__file__), 'chapters')
-for fname in sorted(os.listdir(outdir)):
-    if not fname.endswith('.tex'):
-        continue
-    fpath = os.path.join(outdir, fname)
-    with open(fpath, 'r', encoding='utf-8') as fh:
-        content = fh.read()
-    lines = content.split('\n')
-    prev_cmd = ''
-    prev_title = ''
-    for i, line in enumerate(lines):
-        s = line.strip()
-        matched = None
-        for cmd in ['\\chapter{', '\\section{', '\\subsection{', '\\subsubsection{']:
-            if s.startswith(cmd):
-                matched = cmd
-                break
-        if matched:
-            # Check for level jumps (skip of 1 or more intermediate levels)
-            levels = {'\\chapter{': 0, '\\section{': 1, '\\subsection{': 2, '\\subsubsection{': 3}
-            if prev_cmd and matched in levels and prev_cmd in levels:
-                jump = levels[matched] - levels[prev_cmd]
-                if jump > 1:
-                    title = s[len(matched):-1]
-                    print(f'{fname}:{i+1}: {prev_cmd.replace("{","")} -> {matched.replace("{","")} ({jump} levels): {title[:60]}')
-            prev_cmd = matched
diff --git a/_check_nums.py b/_check_nums.py
deleted file mode 100644
index 7a2c739..0000000
--- a/_check_nums.py
+++ /dev/null
@@ -1,23 +0,0 @@
-import re, os
-
-outdir = r'e:/Project/SI/2026_DesignAI/officefile/latex/chapters'
-total = 0
-
-for fname in sorted(os.listdir(outdir)):
-    if fname == 'ch13-conclusion.tex' or not fname.endswith('.tex'):
-        continue
-    fpath = os.path.join(outdir, fname)
-    with open(fpath, 'r', encoding='utf-8') as f:
-        content = f.read()
-
-    for cmd in ['section', 'subsection', 'subsubsection']:
-        pattern = re.compile(r'\\' + cmd + r'\{(\d+\.[^}]+)\}')
-        matches = pattern.findall(content)
-        for m in matches[:3]:
-            head = m[:60]
-            print(f'  \\{cmd}{{{head}}}')
-        if len(matches) > 3:
-            print(f'  ... and {len(matches)-3} more \\{cmd} with numbers')
-        total += len(matches)
-
-print(f'\nTotal headings with numeric prefix: {total}')