Full-route capture (Holtburg -> dungeon 0x0007 -> town 0xCE94 -> dungeon
-> Holtburg, 4 teleports) plus the supplemental town run. Verdict: the
render-side-CPU split is confirmed (GPU <= ~2.7ms, upd/upl/imgui ~= 0),
steady medians beat the spec assumption (worst town p50 3.6ms), and the
smoothness gap is GC: 1.5-3 MB allocated per frame drives gen2
collections 1-2/s and every town p99/max violation, while dungeon
windows (zero gen1/gen2) are spike-free at ~2000 fps. Teleport hitch
quantified at 211ms worst frame / 75.7MB single-frame allocation.
Gate decision: PROCEED to MP1 unchanged, with one recorded amendment -
a bounded post-MP1 allocation-triage session for churn sites outside
the MP3 rewrite surface. Fort Tethana axiom view still to be
re-measured at the MP2/MP3 gates.
MP0 complete: profiler shipped (7d74c68c..4b44a152) + baseline + gate.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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