To continue working from front to back, it was now time to tackle the traveler for the jib sheet.
I've had plenty of time to think about this, as it's secured to both the port and starboard sides.

Both ends pass through the deck and are secured to the watertight bulkhead below.

The jib sheet is attached to this. It can't move completely freely when tacking. The sheet then has to be guided over the lantern and the entrance to the forepeak.
If I were to secure this in the usual way, I wouldn't be able to separate the two parts. So I decided to make it from a tube, saw it in half, and attach a pin as a connection between the two.
The traveler is 50 mm thick, so to scale, I had to work with a 1 mm tube. I found one with an inside diameter of 0.5 mm. With 0.5 mm wire. With the wire inside the tube I was also able to bend the tube without deforming it in the bends.
This is the result:

The blue arrow points to the traveler that runs between the mast tube and the lantern.

Halfway behind the mast tube, I made the connection.
Here are the two parts separated:

The blue arrows point to the two parts of the traveler.
It's almost insignificant, so a few "unforgivable macros" are necessary.
The two parts with the pin in the port side:

So, the tube is 1.0 mm and the pin is 0.5 mm.

With some trial and error, the pin was slid into the other part. And I can now slide everything together more evenly.
That's another trigger point solved.
There's also a traveler for the mainsail sheet. It's partially attached to the bulwark, near the mizzen mast's chainplates. I need to add a piece of hull plating to the open section of the frame, otherwise, it won't be secured there.
Regards, Peter