feat: more crud for kanban

package/gitea-kanban-tui/src/text.rs

@@ -11,6 +11,19 @@ pub fn sanitize_terminal_text(value: &str) -> String {
         .collect()
 }
 
+pub fn sanitize_editor_text(value: &str) -> String {
+    value
+        .chars()
+        .map(|character| {
+            if character == '\n' || !character.is_control() {
+                character
+            } else {
+                ' '
+            }
+        })
+        .collect()
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -22,4 +35,12 @@ mod tests {
             "safe [31m text"
         );
     }
+
+    #[test]
+    fn editor_sanitizer_preserves_newlines() {
+        assert_eq!(
+            sanitize_editor_text("first\nsecond\u{1b}[31m"),
+            "first\nsecond [31m"
+        );
+    }
 }