Write imported classes in the SVG Tiny 1.2 profile too

SVG Tiny 1.2 lists class among its core attributes, so the Tiny export no longer drops an object's own classes.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/svg/src/export/output.rs

@@ -211,7 +211,8 @@ impl Writer<'_> {
             .map(String::as_str)
             .filter(|c| !c.is_empty() && !c.chars().any(|ch| ch.is_control() || matches!(ch, '\u{fffe}' | '\u{ffff}')))
             .collect();
-        if !classes.is_empty() && !self.tiny() {
+        // SVG Tiny 1.2 has `class` among its core attributes, so every profile writes them.
+        if !classes.is_empty() {
             out.push_str(&format!(" class=\"{}\"", xml_attr_escape(&classes.join(" "))));
         }
         let mut keys = HashSet::new();

crates/svg/tests/classes.rs

@@ -1,7 +1,7 @@
 //! CSS classes on imported elements come back on export, beside the generated `cls-N` classes.
 #![allow(clippy::unwrap_used, clippy::expect_used, clippy::panic)]
 use usvg::roxmltree;
-use vectorcraft_svg::{ExportOptions, Styling, export, import};
+use vectorcraft_svg::{ExportOptions, Profile, Styling, export, import};
 
 const SRC: &str = r#"<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><g id="grp" class="wrap  big"><rect id="r" class="hero hero cls-7" width="20" height="20" fill="red"/><circle id="c" r="5" fill="blue"/></g></svg>"#;
 
@@ -36,3 +36,10 @@ fn class_names_with_colons_slashes_and_no_break_spaces_are_kept() {
     let out = export(&import(src).unwrap(), &ExportOptions::default());
     assert_eq!(class_of(&out, "r").as_deref(), Some("hover:bg-blue w-1/2 a\u{a0}b"));
 }
+
+#[test]
+fn the_tiny_profile_keeps_imported_classes() {
+    let out = export(&import(SRC).unwrap(), &ExportOptions { profile: Profile::Tiny12, ..ExportOptions::default() });
+    assert_eq!(class_of(&out, "grp").as_deref(), Some("wrap big"), "{out}");
+    assert_eq!(class_of(&out, "r").as_deref(), Some("hero"), "{out}");
+}