diff --git a/layout-review/01_deduplicator.html b/layout-review/01_deduplicator.html
index 6908aba..b00c79f 100644
--- a/layout-review/01_deduplicator.html
+++ b/layout-review/01_deduplicator.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Layout review — Find Duplicates</title>
-<link rel="stylesheet" href="../assets/app.css">
+<link rel="stylesheet" href="app.css">
 </head>
 <body data-page="01_deduplicator">
 <div class="dt-app">
@@ -182,6 +182,6 @@
   </main>
 </div>
 <footer class="dt-footer" id="dt-footer"></footer>
-<script src="../assets/shell.js"></script>
+<script src="shell.js"></script>
 </body>
 </html>
diff --git a/layout-review/02_text_cleaner.html b/layout-review/02_text_cleaner.html
index d905d66..6f49c95 100644
--- a/layout-review/02_text_cleaner.html
+++ b/layout-review/02_text_cleaner.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Layout review — Clean Text</title>
-<link rel="stylesheet" href="../assets/app.css">
+<link rel="stylesheet" href="app.css">
 <style>
   /* Hidden-character badges — mirrors src/core/text_clean.py:hidden_char_css(),
      not part of app.css so reproduced inline against the same palette. */
@@ -203,6 +203,6 @@
   </main>
 </div>
 <footer class="dt-footer" id="dt-footer"></footer>
-<script src="../assets/shell.js"></script>
+<script src="shell.js"></script>
 </body>
 </html>
diff --git a/layout-review/03_format_standardizer.html b/layout-review/03_format_standardizer.html
index b8b0fbb..a0bff95 100644
--- a/layout-review/03_format_standardizer.html
+++ b/layout-review/03_format_standardizer.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Layout review — Standardize Formats</title>
-<link rel="stylesheet" href="../assets/app.css">
+<link rel="stylesheet" href="app.css">
 </head>
 <body data-page="03_format_standardizer">
 <div class="dt-app">
@@ -219,6 +219,6 @@
   </main>
 </div>
 <footer class="dt-footer" id="dt-footer"></footer>
-<script src="../assets/shell.js"></script>
+<script src="shell.js"></script>
 </body>
 </html>
diff --git a/layout-review/04_missing_handler.html b/layout-review/04_missing_handler.html
index 9428bdb..8475a01 100644
--- a/layout-review/04_missing_handler.html
+++ b/layout-review/04_missing_handler.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Layout review — Fix Missing Values</title>
-<link rel="stylesheet" href="../assets/app.css">
+<link rel="stylesheet" href="app.css">
 </head>
 <body data-page="04_missing_handler">
 <div class="dt-app">
@@ -266,6 +266,6 @@
   </main>
 </div>
 <footer class="dt-footer" id="dt-footer"></footer>
-<script src="../assets/shell.js"></script>
+<script src="shell.js"></script>
 </body>
 </html>
diff --git a/layout-review/05_column_mapper.html b/layout-review/05_column_mapper.html
index f0d0cce..c0c2a02 100644
--- a/layout-review/05_column_mapper.html
+++ b/layout-review/05_column_mapper.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Layout review — Map Columns</title>
-<link rel="stylesheet" href="../assets/app.css">
+<link rel="stylesheet" href="app.css">
 </head>
 <body data-page="05_column_mapper">
 <div class="dt-app">
@@ -217,6 +217,6 @@
   </main>
 </div>
 <footer class="dt-footer" id="dt-footer"></footer>
-<script src="../assets/shell.js"></script>
+<script src="shell.js"></script>
 </body>
 </html>
diff --git a/layout-review/06_outlier_detector.html b/layout-review/06_outlier_detector.html
index d1c13b6..546a847 100644
--- a/layout-review/06_outlier_detector.html
+++ b/layout-review/06_outlier_detector.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Layout review — Find Unusual Values</title>
-<link rel="stylesheet" href="../assets/app.css">
+<link rel="stylesheet" href="app.css">
 </head>
 <body data-page="06_outlier_detector">
 <div class="dt-app">
@@ -86,6 +86,6 @@
   </main>
 </div>
 <footer class="dt-footer" id="dt-footer"></footer>
-<script src="../assets/shell.js"></script>
+<script src="shell.js"></script>
 </body>
 </html>
diff --git a/layout-review/07_multi_file_merger.html b/layout-review/07_multi_file_merger.html
index e2d97b6..ede9b11 100644
--- a/layout-review/07_multi_file_merger.html
+++ b/layout-review/07_multi_file_merger.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Layout review — Combine Files</title>
-<link rel="stylesheet" href="../assets/app.css">
+<link rel="stylesheet" href="app.css">
 </head>
 <body data-page="07_multi_file_merger">
 <div class="dt-app">
@@ -78,6 +78,6 @@
   </main>
 </div>
 <footer class="dt-footer" id="dt-footer"></footer>
-<script src="../assets/shell.js"></script>
+<script src="shell.js"></script>
 </body>
 </html>
diff --git a/layout-review/08_validator_reporter.html b/layout-review/08_validator_reporter.html
index 3c48dd1..d255430 100644
--- a/layout-review/08_validator_reporter.html
+++ b/layout-review/08_validator_reporter.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Layout review — Quality Check</title>
-<link rel="stylesheet" href="../assets/app.css">
+<link rel="stylesheet" href="app.css">
 </head>
 <body data-page="08_validator_reporter">
 <div class="dt-app">
@@ -88,6 +88,6 @@
   </main>
 </div>
 <footer class="dt-footer" id="dt-footer"></footer>
-<script src="../assets/shell.js"></script>
+<script src="shell.js"></script>
 </body>
 </html>
diff --git a/layout-review/09_pipeline_runner.html b/layout-review/09_pipeline_runner.html
index 2cb4e86..63426bd 100644
--- a/layout-review/09_pipeline_runner.html
+++ b/layout-review/09_pipeline_runner.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Layout review — Automated Workflows</title>
-<link rel="stylesheet" href="../assets/app.css">
+<link rel="stylesheet" href="app.css">
 </head>
 <body data-page="09_pipeline_runner">
 <div class="dt-app">
@@ -226,6 +226,6 @@
   </main>
 </div>
 <footer class="dt-footer" id="dt-footer"></footer>
-<script src="../assets/shell.js"></script>
+<script src="shell.js"></script>
 </body>
 </html>
diff --git a/layout-review/10_pdf_extractor.html b/layout-review/10_pdf_extractor.html
index 6e01882..3d457b1 100644
--- a/layout-review/10_pdf_extractor.html
+++ b/layout-review/10_pdf_extractor.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Layout review — PDF to CSV</title>
-<link rel="stylesheet" href="../assets/app.css">
+<link rel="stylesheet" href="app.css">
 </head>
 <body data-page="10_pdf_extractor">
 <div class="dt-app">
@@ -184,6 +184,6 @@
   </main>
 </div>
 <footer class="dt-footer" id="dt-footer"></footer>
-<script src="../assets/shell.js"></script>
+<script src="shell.js"></script>
 </body>
 </html>
diff --git a/layout-review/11_reconciler.html b/layout-review/11_reconciler.html
index 300b9fd..311837e 100644
--- a/layout-review/11_reconciler.html
+++ b/layout-review/11_reconciler.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Layout review — Reconcile Two Files</title>
-<link rel="stylesheet" href="../assets/app.css">
+<link rel="stylesheet" href="app.css">
 </head>
 <body data-page="11_reconciler">
 <div class="dt-app">
@@ -246,6 +246,6 @@
   </main>
 </div>
 <footer class="dt-footer" id="dt-footer"></footer>
-<script src="../assets/shell.js"></script>
+<script src="shell.js"></script>
 </body>
 </html>
diff --git a/assets/app.css b/layout-review/app.css
similarity index 100%
rename from assets/app.css
rename to layout-review/app.css
diff --git a/layout-review/home.html b/layout-review/home.html
index 49dd2b8..5c4d3ca 100644
--- a/layout-review/home.html
+++ b/layout-review/home.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Layout review — File Analysis (Home)</title>
-<link rel="stylesheet" href="../assets/app.css">
+<link rel="stylesheet" href="app.css">
 </head>
 <body data-page="home">
 <div class="dt-app">
@@ -159,6 +159,6 @@
   </main>
 </div>
 <footer class="dt-footer" id="dt-footer"></footer>
-<script src="../assets/shell.js"></script>
+<script src="shell.js"></script>
 </body>
 </html>
diff --git a/layout-review/index.html b/layout-review/index.html
index b2b4665..0df92ca 100644
--- a/layout-review/index.html
+++ b/layout-review/index.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>DataTools — Layout Review</title>
-<link rel="stylesheet" href="../assets/app.css">
+<link rel="stylesheet" href="app.css">
 <style>
   .lr-wrap { max-width: 960px; margin: 0 auto; padding: 48px 32px 80px; }
   .lr-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 18px; }
diff --git a/assets/shell.js b/layout-review/shell.js
similarity index 100%
rename from assets/shell.js
rename to layout-review/shell.js
