Ordered Map

A map that remembers insertion order, demoing the p/moul/x/daily/orderedmap library.

Inserted

delta, alpha, charlie, bravo → order kept as inserted, not sorted:

#	key	value
1	delta	4
2	alpha	1
3	charlie	3
4	bravo	2

After Set("alpha", "99")

Updating keeps the original position — insertion order means first insertion:

#	key	value
1	delta	4
2	alpha	99
3	charlie	3
4	bravo	2

After deleting and re-adding charlie

Re-inserting is a new insertion, so it goes last:

#	key	value
1	delta	4
2	alpha	99
3	bravo	2
4	charlie	new

gno map iteration order is unspecified. A realm that ranges over a built-in map to build its page can emit a different page every call — a consensus bug, not a cosmetic one. This is the fix.