Two more holes of the arena's family, found from ECS's births:
- a function called through a function value (UiClass.make's cmp_x_new, a step list, a System's tick)
has its result flow nowhere the analysis can see, so what it returned looked LOCAL - and a caller
keeping it (ludic.ui's instance table) would keep scratch. Every function taken as a value (fn f)
now has its result kept.
- an entry block has no name, and the analysis only walked named declarations: what an entry stored
was never seen. It is walked now.
examples/lang/arena_fnval.ludic (a factory in a field, its records kept by a pool across frames)
crashed poisoned before and prints '5 1053' as the heap does now; in ludic-dev test. Maroon Lake:
component constructors are kept, not births (birth_leaks 115 -> 103); what fn values return is kept
(frame_allocs 194 -> 210, frame_keeps 151 -> 162); 5293 sites local, 6586 kept.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>