Fix tag highlighting: chip the escaped tag form after html.escape

app.py

@@ -136,10 +136,12 @@ def highlight_tags(caption: str) -> str:
         return (
             f'<span style="background:rgba(99,102,241,.18);border:1px solid rgba(99,102,241,.55);'
             f'border-radius:6px;padding:0 6px;margin:0 2px;font-family:monospace;'
-            f'font-size:.92em;color:var(--body-text-color);white-space:nowrap;">{html.escape(m.group(0))}</span>'
+            f'font-size:.92em;color:var(--body-text-color);white-space:nowrap;">{m.group(0)}</span>'
         )
 
-    return re.sub(r"<Image_\d+>", chip, html.escape(caption))
+    # Escape first, then chip the escaped tag form (&lt;Image_N&gt;) so the rest
+    # of the caption stays safely escaped while tags render as styled chips.
+    return re.sub(r"&lt;(Image_\d+)&gt;", chip, html.escape(caption))
 
 
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