refacto: Displaying number of players for each team + adding logo at registration

server/db/gameDb.js

@@ -273,3 +273,17 @@ export async function getScores(worldSeed) {
   );
   return rows;
 }
+
+// ── Active player counts (players who have played in the current epoch) ───────
+
+export async function getActivePlayerCounts(worldSeed) {
+  const { rows } = await pool.query(
+    `SELECT team, COUNT(DISTINCT user_id)::int AS count
+     FROM user_cooldowns WHERE world_seed = $1
+     GROUP BY team`,
+    [worldSeed]
+  );
+  const result = { blue: 0, red: 0 };
+  for (const row of rows) result[row.team] = row.count;
+  return result;
+}

server/db/usersDb.js

@@ -42,4 +42,13 @@ export async function getUserById(id) {
     [id]
   );
   return rows[0] ?? null;
+}
+
+export async function getTeamPlayerCounts() {
+  const { rows } = await usersPool.query(
+    `SELECT team, COUNT(*)::int AS count FROM users GROUP BY team`
+  );
+  const result = { blue: 0, red: 0 };
+  for (const row of rows) result[row.team] = row.count;
+  return result;
 }