A little past that there's something mounted on the wall that the word association system says is a gun. The gun isn't pointed towards her and it's emitting red lines of some sort out in front of it. Both appear to be valid targets for the Jammer.

...A gun.  That is not a good sign.

Jamming the gun takes immediate priority; the hovering orb can wait.

The gun needs to be understood so it and its ilk can be avoided.

If, at least, the gun is inclined to shoot at things like this chassis.  Relatedly, the orb shall be avoided, for now - there is a pattern match between it and the gun.

Jamming the gun yields the text: Predictive Capacity.... Ok.

The sphere is between you and closely inspecting the gun.

Walking even vaguely close to it makes the sphere pop open spreading red lines out to cover the whole width of the path.

...what happens if an object interrupts those lines?

The only objects at hand are the Jammer and you. Assuming you don't test with yourself the Jammer is ignored, though with careful positioning the sphere will shorten it's patrol path to avoid hitting the Jammer.

There are lilypads.

The lilypads are also ignored by the sphere. If thrown directly at it they slide off.

...fine.  Swiping a hand through the beam really quickly it is.

In the split second of passage there's a loud whine.

Oh well that's probably ungood.

Right.  Jamming the things and continuing on it is.  This is really quite frustrating; clearly someone knows the rules but they aren't telling anyone anything.

...and it appears that one cannot even arrange for both of them to be blockaded by the same jammer.  Frustrating.

Observation of what happens when the sphere is jammed is therefore necessary.

The sphere when jammed is covered by blue lightning and stays perfectly still.

Jamming the sphere also yields the text: Spatial Awareness.... Ok.

Walking past the sphere reveals a second Jammer.

...Beyond or before the gun?

It's off to the side. Walking forward would lead to the gun but going sideways and behind the gun leads to the jammer.

Well, time to grab the second jammer and jam - the sphere, actually, so as to get the first jammer beyond it and jam the gun.

This plan goes as expected and both the gun and sphere are successfully jammed. The path the gun was aimed at is now, probably, safe.

Still probably worth having a jammer ready, though.

Walking forward, things open up a little with two small deadends to either side while the path also continues forward. To the left there's nothing in particular to the right there's a QR code on a wall and a ladder. Based on your spatial awareness you can tell that it's on the other side of a wall you've already been to.

Well, it's time to decode the code.

...Is there anything that poking around in the 'empty' space reveals?

Apparently, you have a module for decoding QR codes. This one says the following: I don't know where I am, but there is something beautiful about this place. I will explore and see what I can discover. -- @ v17.1.0054

There are some trees and bushes. There's also some fencing that you can see through but nothing important appears to be on the other side, well unless you count the sphere you already walked past. Interestingly the sphere doesn't activate through the fence even if you get very close.

That's good to know.

...Does this chassis perchance have a module for writing QR codes?

When you go looking for it yes it does.