diff --git a/src/api/comments/markdown.rs b/src/api/comments/markdown.rs
index 315f9e1..5bb0da2 100644
--- a/src/api/comments/markdown.rs
+++ b/src/api/comments/markdown.rs
@@ -176,8 +176,7 @@ mod tests {
 
     #[test]
     fn render_comment_link_data_uri_removed() {
-        let result =
-            render_comment_markdown("[click](data:text/html,<script>alert(1)</script>)");
+        let result = render_comment_markdown("[click](data:text/html,<script>alert(1)</script>)");
         assert!(result.contains("click"));
         assert!(!result.contains("data:"));
     }
diff --git a/src/api/markdown.rs b/src/api/markdown.rs
index e55f89a..83d7a67 100644
--- a/src/api/markdown.rs
+++ b/src/api/markdown.rs
@@ -382,8 +382,12 @@ mod tests {
     fn render_markdown_code_block() {
         let result = render_markdown_enhanced("```rust\nfn main() {}\n```");
         assert!(result.html.contains(r#"<pre><code class="language-rust">"#));
-        assert!(result.html.contains(r#"<span class="entity name function rust">main</span>"#));
-        assert!(result.html.contains(r#"<span class="storage type function rust">fn</span>"#));
+        assert!(result
+            .html
+            .contains(r#"<span class="entity name function rust">main</span>"#));
+        assert!(result
+            .html
+            .contains(r#"<span class="storage type function rust">fn</span>"#));
     }
 
     #[test]
@@ -399,8 +403,12 @@ mod tests {
         let result = render_markdown_enhanced("```html\n<script>alert(1)</script>\n```");
         assert!(result.html.contains("<pre><code class=\"language-html\">"));
         assert!(!result.html.contains("<script>"));
-        assert!(result.html.contains(r#"<span class="variable function js">alert</span>"#));
-        assert!(result.html.contains(r#"<span class="constant numeric js">1</span>"#));
+        assert!(result
+            .html
+            .contains(r#"<span class="variable function js">alert</span>"#));
+        assert!(result
+            .html
+            .contains(r#"<span class="constant numeric js">1</span>"#));
     }
 
     #[test]
diff --git a/src/api/posts/helpers.rs b/src/api/posts/helpers.rs
index 8e3f0bd..0ef1248 100644
--- a/src/api/posts/helpers.rs
+++ b/src/api/posts/helpers.rs
@@ -217,18 +217,30 @@ mod tests {
     #[test]
     fn clean_tags_trims_whitespace() {
         let input = vec!["  rust ".to_string(), "\t\nwasm\t".to_string()];
-        assert_eq!(clean_tags(&input), vec!["rust".to_string(), "wasm".to_string()]);
+        assert_eq!(
+            clean_tags(&input),
+            vec!["rust".to_string(), "wasm".to_string()]
+        );
     }
 
     #[test]
     fn clean_tags_filters_empty_strings() {
-        let input = vec!["".to_string(), "  ".to_string(), "\t".to_string(), "valid".to_string()];
+        let input = vec![
+            "".to_string(),
+            "  ".to_string(),
+            "\t".to_string(),
+            "valid".to_string(),
+        ];
         assert_eq!(clean_tags(&input), vec!["valid".to_string()]);
     }
 
     #[test]
     fn clean_tags_preserves_duplicates() {
-        let input = vec!["rust".to_string(), "  rust  ".to_string(), "rust".to_string()];
+        let input = vec![
+            "rust".to_string(),
+            "  rust  ".to_string(),
+            "rust".to_string(),
+        ];
         assert_eq!(
             clean_tags(&input),
             vec!["rust".to_string(), "rust".to_string(), "rust".to_string()]