Constant MAX_SUSPEND_MS 

pub const MAX_SUSPEND_MS: i64 = _; // 604_800_000i64

Default cap on the cumulative time a session may spend Suspended before it is force-expired (RFC-MACP-0001 §7.5). Bounds indefinite human-in-the-loop holds. Sessions may bind their own cap via SessionStartPayload.max_suspend_ms (0 selects this default); the resolved cap is recorded at SessionStart and used by replay (RFC-MACP-0003 §2) — see Session::effective_max_suspend_ms.