Lane E round 4 (E1): decimate 19 ped rigs 924k→46k tris (≤3k each) for gate 3

weld + meshopt simplify (--ratio 0.05 --error 0.12); skinning + skeleton preserved
(65 joints intact), walk/idle clips untouched, silhouettes clean at street distance.
Originals backed up to gitignored pipeline/.peds_orig/. Hands to Lane D (D2) for rig
validation; Lane F re-measures gate 3 (~24-rig cap × ≤3k ≈ ≤67k fleet).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitignore

@@ -9,3 +9,4 @@ node_modules/
 .env
 pipeline/.genprops/
 web/assets/models/
+pipeline/.peds_orig/

pipeline/AUDIT.md

@@ -158,3 +158,24 @@ Raw stats for every **parsable `.glb`** (59 of the ~69 library entries; the rest
 or subdir sources not counted): `pipeline/_audit_stats.json`. `glb_stat.py` reports **world-space**
 dims (node-transform-aware) and WebP/PNG/JPEG texture sizes. Normalizer output:
 `pipeline/_normalize_results.json`.
+
+## Round 4 — ped-rig decimation (gate-3 blocker)
+
+The 19 street ped rigs in `web/models/peds/` were **~31k–56k tris each (924k total)** — the cause of
+gate 3 failing (~279k tris at the busiest intersection vs ≤200k). Decimated to **≤3k tris each**
+(integrator decision #1) via `gltf-transform` `weld` → `simplify` (meshoptimizer):
+
+```
+gltf-transform weld  in.glb  _w.glb
+gltf-transform simplify _w.glb out.glb --ratio 0.05 --error 0.12
+```
+
+meshoptimizer works cleanly here (proper manifold skinned character meshes, NOT the TRELLIS
+shell-soup of the R3 hero props). Result: **924,153 → 46,551 tris** (48.6k → 2.45k avg; range
+1564–2805, all ≤3k), **36M → 5M** on disk. **Skinning fully preserved** — `JOINTS_0`/`WEIGHTS_0`
+intact, skeleton unchanged (nodes + 65 joints identical to source), so the shared `walk.glb`/
+`idle.glb` clips retarget unchanged (both left untouched). Contact sheet:
+`docs/shots/laneE/peds_decimated.png` — silhouettes/textures read clean, no melted faces/hands
+(fine for street distance). Originals backed up (gitignored) at `pipeline/.peds_orig/`; per-ped
+before/after in `pipeline/_peds_decim.json`. Lane D validates rig binding + anims (task D2); Lane F
+re-measures gate 3 (~24-rig near cap × ≤3k ≈ ≤67k fleet contribution).

pipeline/_peds_decim.json

@@ -0,0 +1,97 @@
+[
+  {
+    "file": "comical_boy_01.glb",
+    "before": 31292,
+    "after": 1564
+  },
+  {
+    "file": "comical_luchador_01.glb",
+    "before": 49576,
+    "after": 2478
+  },
+  {
+    "file": "man_athletic_01.glb",
+    "before": 56258,
+    "after": 2805
+  },
+  {
+    "file": "man_bouncer_01.glb",
+    "before": 41532,
+    "after": 2073
+  },
+  {
+    "file": "man_casual_01.glb",
+    "before": 42818,
+    "after": 2132
+  },
+  {
+    "file": "man_casual_02.glb",
+    "before": 49180,
+    "after": 2458
+  },
+  {
+    "file": "man_casual_03.glb",
+    "before": 47867,
+    "after": 2386
+  },
+  {
+    "file": "man_dj_streetwear_01.glb",
+    "before": 53876,
+    "after": 2692
+  },
+  {
+    "file": "man_elder_01.glb",
+    "before": 32098,
+    "after": 1603
+  },
+  {
+    "file": "man_grunge_01.glb",
+    "before": 50187,
+    "after": 2500
+  },
+  {
+    "file": "man_soldier_ww2_01.glb",
+    "before": 54668,
+    "after": 2729
+  },
+  {
+    "file": "man_suit_01.glb",
+    "before": 54938,
+    "after": 2741
+  },
+  {
+    "file": "man_worker_hivis_01.glb",
+    "before": 53738,
+    "after": 2680
+  },
+  {
+    "file": "woman_athleisure_01.glb",
+    "before": 52126,
+    "after": 2596
+  },
+  {
+    "file": "woman_business_01.glb",
+    "before": 52838,
+    "after": 2711
+  },
+  {
+    "file": "woman_casual_01.glb",
+    "before": 53460,
+    "after": 2670
+  },
+  {
+    "file": "woman_casual_02.glb",
+    "before": 48229,
+    "after": 2769
+  },
+  {
+    "file": "woman_chef_01.glb",
+    "before": 49794,
+    "after": 2485
+  },
+  {
+    "file": "woman_smart_01.glb",
+    "before": 49678,
+    "after": 2479
+  }
+]