Fix lead indicator prediction & align projectile lifetime (client/server)

server/server.cpp

@@ -423,7 +423,7 @@ private:
 					float len = worldForward.norm();
 					if (len > 1e-6f) worldForward /= len;
 					pr.vel = worldForward * velocity;
-					pr.lifeMs = 5000.0f;
+					pr.lifeMs = 15000.0f;
 					g_projectiles.push_back(pr);
 
 					std::cout << "Server: Created projectile from player " << id_