story-kit: merge 353_story_add_party_emoji_to_done_stage_notification_messages

server/src/matrix/notifications.rs

@@ -73,9 +73,10 @@ pub fn format_stage_notification(
     let number = extract_story_number(item_id).unwrap_or(item_id);
     let name = story_name.unwrap_or(item_id);
 
-    let plain = format!("#{number} {name} \u{2014} {from_stage} \u{2192} {to_stage}");
+    let prefix = if to_stage == "Done" { "\u{1f389} " } else { "" };
+    let plain = format!("{prefix}#{number} {name} \u{2014} {from_stage} \u{2192} {to_stage}");
     let html = format!(
-        "<strong>#{number}</strong> <em>{name}</em> \u{2014} {from_stage} \u{2192} {to_stage}"
+        "{prefix}<strong>#{number}</strong> <em>{name}</em> \u{2014} {from_stage} \u{2192} {to_stage}"
     );
     (plain, html)
 }
@@ -320,6 +321,35 @@ mod tests {
 
     // ── format_stage_notification ───────────────────────────────────────────
 
+    #[test]
+    fn format_notification_done_stage_includes_party_emoji() {
+        let (plain, html) = format_stage_notification(
+            "353_story_done",
+            Some("Done Story"),
+            "Merge",
+            "Done",
+        );
+        assert_eq!(
+            plain,
+            "\u{1f389} #353 Done Story \u{2014} Merge \u{2192} Done"
+        );
+        assert_eq!(
+            html,
+            "\u{1f389} <strong>#353</strong> <em>Done Story</em> \u{2014} Merge \u{2192} Done"
+        );
+    }
+
+    #[test]
+    fn format_notification_non_done_stage_has_no_emoji() {
+        let (plain, _html) = format_stage_notification(
+            "42_story_thing",
+            Some("Some Story"),
+            "Backlog",
+            "Current",
+        );
+        assert!(!plain.contains("\u{1f389}"));
+    }
+
     #[test]
     fn format_notification_with_story_name() {
         let (plain, html) = format_stage_notification(