Time and connection

API	Returns	Notes
`aqua.get_curtime()`	number	Client curtime (seconds)
`aqua.realtime()`	number	Monotonic seconds. Keeps running in menus and across matches - use it for UI timing (fades, delays) that must not care about game state
`aqua.script_dir()`	string	Absolute path of this script’s folder
`aqua.is_in_game()`	bool	Signon full (in level / match) via engine client
`aqua.is_connected()`	bool	Connection handshake started (may not be fully in level yet)
`aqua.server_address()`	string	The address the `status` command prints as “udp/ip” (`"a.b.c.d"`), or `""` when the network service did not resolve
`aqua.is_official_server()`	bool	True on a Valve dedicated server (`C_CSGameRules::m_bIsValveDS`); false on community/local servers and in the menu
`aqua.rate_limit(id, intervalSec)`	bool	`true` when `intervalSec` elapsed since last true for `id` (per script run). Resets if curtime goes backwards (new match).
`aqua.once(id)`	bool	`true` only the first time `id` is seen this script run

if aqua.rate_limit("heartbeat", 1.0) then
    print("once per second")
end

if aqua.once("hello") then
    print("startup message")
end