reorg(characters): ship-time folders — lena_base_v01 ships, lane moves to work/lena

REGISTRY rewritten around the central rule: a character folder is born only
when a body ships to ariki-game (<character>_base_v<NN> = ship ordinal).
lena_nude dissolves accordingly:
- characters/female/lena_base_v01/ — SHIPPED 2026-08-10: AccuRig GLB carrier,
  T-pose/rig FBX + JSON, previews, frozen README
- characters/work/lena/ — the live lane: recipes 01-47 (incl. new 36-47:
  refill/sheets/clay/despeckle/musculature/spin/AccuRig export/graft/pose QC),
  masters (athletic_v04 blend + textures, accurig blend), lane-history README
- hires_claude/hires_work intermediates (blends, logs, probes) pruned

Supporting docs: AGENTS.md, working-files rule, rig-graft plan addendum,
originals README, prune_lane.py.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

characters/work/lena/37_sheets.py

@@ -0,0 +1,78 @@
+# Stage 37 (read-only): compose before/after review sheets.
+#
+#   blender --background --python 37_sheets.py -- <out_dir>
+#
+# "Before" is the body as it was handed to this lane: decimated v01, Tripo's 5,870-chart atlas,
+# single-sided (so the inward-wound patches are culled into grey tears). "After" is v04.
+import bpy, sys, os
+import numpy as np
+
+OUT = os.path.abspath(sys.argv[sys.argv.index("--") + 1])
+os.makedirs(OUT, exist_ok=True)
+HERE = os.path.dirname(os.path.abspath(__file__))
+
+
+def load(p):
+    im = bpy.data.images.load(p)
+    w, h = im.size
+    b = np.empty(w * h * 4, dtype=np.float32)
+    im.pixels.foreach_get(b)
+    a = b.reshape(h, w, 4)[:, :, :3].copy()
+    bpy.data.images.remove(im)
+    return a[::-1]
+
+
+def fit(a, w, h):
+    ys = (np.arange(h) * (a.shape[0] / h)).astype(int).clip(0, a.shape[0] - 1)
+    xs = (np.arange(w) * (a.shape[1] / w)).astype(int).clip(0, a.shape[1] - 1)
+    return a[ys][:, xs]
+
+
+def save(a, name):
+    h, w = a.shape[:2]
+    img = bpy.data.images.new(name, w, h, alpha=False)
+    buf = np.ones((h, w, 4), dtype=np.float32)
+    buf[:, :, :3] = np.clip(a, 0, 1)[::-1]
+    img.pixels.foreach_set(buf.reshape(-1))
+    p = os.path.join(OUT, name)
+    img.file_format = 'JPEG'
+    img.filepath_raw = p
+    img.save(filepath=p)
+    print(f"wrote {p}  {w}x{h}  {os.path.getsize(p)/1e6:.2f} MB", flush=True)
+
+
+GAP = 10
+BG = 0.10
+
+
+def grid(rows, cell_w, cell_h):
+    nrow, ncol = len(rows), max(len(r) for r in rows)
+    W = ncol * cell_w + (ncol + 1) * GAP
+    H = nrow * cell_h + (nrow + 1) * GAP
+    sheet = np.full((H, W, 3), BG)
+    for r, row in enumerate(rows):
+        for c, p in enumerate(row):
+            if p is None:
+                continue
+            y = GAP + r * (cell_h + GAP)
+            x = GAP + c * (cell_w + GAP)
+            sheet[y:y + cell_h, x:x + cell_w] = fit(load(p), cell_w, cell_h)
+    return sheet
+
+
+B4 = os.path.join(HERE, "beauty_input_v01")     # as handed over: Tripo atlas, single-sided
+AF = os.path.join(HERE, "beauty_refill_v04")    # now
+
+save(grid([[os.path.join(B4, "full_front.png"), os.path.join(AF, "full_front.png")],
+           [os.path.join(B4, "chest.png"), os.path.join(AF, "chest.png")],
+           [os.path.join(B4, "hip.png"), os.path.join(AF, "hip.png")]],
+          900, 900), "sheet_body_before_after.jpg")
+
+save(grid([[os.path.join(HERE, "probe_atlas", "basecolor.png"),
+            os.path.join(HERE, "refill_v04", "lena_nude_refill_base.jpg")]],
+          1000, 1000), "sheet_atlas_before_after.jpg")
+
+save(grid([[os.path.join(HERE, "probe_atlas", "islands.png"),
+            os.path.join(HERE, "atlas_v03", "charts.png")]],
+          1000, 1000), "sheet_charts_before_after.jpg")
+print("SHEETS_DONE")