Show clocked in users at the top of the page

app.py

@@ -192,6 +192,27 @@ def index():
         ORDER BY name
     """).fetchall()
 
+
+    # NEW: users currently clocked in
+    clocked_in_users = conn.execute("""
+        SELECT u.id, u.name
+        FROM users u
+        JOIN (
+            SELECT e.user_id, e.entrytype, e.ts
+            FROM entries e
+            INNER JOIN (
+                SELECT user_id, MAX(ts) AS max_ts
+                FROM entries
+                GROUP BY user_id
+            ) latest
+            ON e.user_id = latest.user_id
+               AND e.ts = latest.max_ts
+        ) last_entry
+        ON u.id = last_entry.user_id
+        WHERE last_entry.entrytype = 'in'
+        ORDER BY u.name
+    """).fetchall()
+
     conn.close()
 
     report_hours = None
@@ -221,7 +242,8 @@ def index():
     return render_template(
         "index.html",
         users=users,
-        report_hours=report_hours
+        report_hours=report_hours,
+        clocked_in_users=clocked_in_users
     )
 
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