fix(api): fix markdown rendering to properly handle code blocks and other elements

src/api/posts.rs

@@ -225,10 +225,16 @@ fn render_markdown_enhanced(md: &str) -> RenderedContent {
     let mut html = String::new();
     let mut heading_idx = 0;
     let mut in_heading = false;
+    let mut non_heading_events: Vec<Event> = Vec::new();
 
     for event in parser {
         match event {
             Event::Start(Tag::Heading { level, .. }) => {
+                // Flush non-heading events first
+                if !non_heading_events.is_empty() {
+                    pulldown_cmark::html::push_html(&mut html, non_heading_events.into_iter());
+                    non_heading_events = Vec::new();
+                }
                 in_heading = true;
                 if heading_idx < headings.len() {
                     let (_, _, ref id) = headings[heading_idx];
@@ -241,11 +247,9 @@ fn render_markdown_enhanced(md: &str) -> RenderedContent {
                         HeadingLevel::H6 => "h6",
                     };
                     html.push_str(&format!("<{} id=\"{}\">", tag, id));
-                    continue;
                 }
             }
             Event::End(TagEnd::Heading(level)) => {
-                in_heading = false;
                 if heading_idx < headings.len() {
                     let (_, _, ref id) = headings[heading_idx];
                     let tag = match level {
@@ -261,12 +265,10 @@ fn render_markdown_enhanced(md: &str) -> RenderedContent {
                         id, tag
                     ));
                     heading_idx += 1;
-                    continue;
                 }
+                in_heading = false;
             }
-            _ => {}
+            _ => {
-        }
-
                 if in_heading {
                     // Manually render heading content
                     match event {
@@ -279,9 +281,16 @@ fn render_markdown_enhanced(md: &str) -> RenderedContent {
                         _ => {}
                     }
                 } else {
-            pulldown_cmark::html::push_html(&mut html, std::iter::once(event));
+                    non_heading_events.push(event);
                 }
             }
+        }
+    }
+
+    // Flush remaining non-heading events
+    if !non_heading_events.is_empty() {
+        pulldown_cmark::html::push_html(&mut html, non_heading_events.into_iter());
+    }
 
     // 4. Count words (Chinese characters + English words)
     let word_count = count_words(md);