The Lebanese government is a basket case, and the Lebanese military is likely weaker than Hezbollah.
Any article that does not explicitly state that Hezbollah (and not simply the Lebanese government) agreed to a ceasefire is not stating anything of substance.
Now, Hezbollah said they'd make a statement today about this deal, and I haven't seen the outcome of that yet. They may have agreed to it today.
The point is, however, that this specific article didn't say what the person above said it did. Namely that Hezbollah agreed to anything.