Flag ?roster=stream stays default-off; v1 path byte-identical (citizen-0 = R4 golden, passes
F1 flags-off regression). Full evidence memo in LANE_D_NOTES for the R7 default-on decision.
- Soak (in-shell, real town): 242 chunk builds/disposes over 3 walks -> 0 GPU geom/tex delta;
16 shop enter/exit -> 0 delta; heap oscillates 50->77->54MB (GC, no leak); 188 chunk-keyed
identities re-derive from seed; 0 console errors.
- Hours-aware density: added setNightLivelyChunks + NIGHT_LIVELY_FLOOR so the open-late video
block stays lively at night (31->16) while ordinary streets go near-empty (65->6). F call-site
documented (openLate lot -> chunkKey via sim.chunkKeyAt).
- Composition with ?dig=1: roster is street-tier, inert while interior/dig open (frame loop is
street-branch-only); enter/exit record shops leak-free with stream on. No shared state with any
v2 flag -> all-on combo safe.
- Budget gap found + made safe: each decimated ped is 8 sub-meshes / 2 materials = ~7 draws/rig,
so full-density stream (perChunk 16) hits 356 draws (>300 street budget). Set default perChunk 8
(291 draws, budget-safe today). The clean unlock for full-density default-on = merge ped
sub-meshes by material (8->2 -> ~2 draws/rig -> perChunk 16 fits ~260); documented as R7 work,
F1-safe (v1 spawn view has ~0 near-rigs).
Only web/js/citizens/sim.js + web/citizens_test.html changed (+ NOTES/progress).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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