feat: clothing lane, character sources, and DCC bridges

Bulk import of the working lanes that were living untracked on the PC.

Content:
- characters/  Lena/male body lanes, bakes, texture work, run logs
- clothing/    garment pipeline, configs, gates, contract docs
- garments/    MD-authored garment sources (.zprj/.zpac)
- UAL-Lib/     Universal Animation Library 2 source (.blend/.fbx/.glb)
- tools/       blender_bridge, iclone_bridge, md_bridge, tailor, glm_agent
- docs/, plans/, dev/, .agents/plans/

Repo hygiene:
- .gitattributes: LFS now covers .blend, .zprj, .zpac, .obj, .npy and the
  Reallusion .iAvatar/.ccAvatar/.ccRestore containers. Without this the
  ~3.8 GB in this commit would land as raw blobs. .png/.jpg are left out
  on purpose — ~250 are already tracked raw and converting them would
  rewrite every one without shrinking history.
- .gitignore: exclude /accurig/ (~1 GB AccuRig program files, redistributable
  from Reallusion, nothing authored here) and /dev/null/ (git-lfs hook copies
  dropped by a `>/dev/null` redirect on Windows).

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

characters/female/lena_nude/hires_claude/06c_gusset_membrane.py

@@ -0,0 +1,119 @@
+# Stage 6c: bi-harmonic membrane heal of the briefs-gusset residue between the legs.
+#
+# History: v1 donor snap (06_crotch.py) fixed the pubic front but its 2 cm SNAP_MAX left the
+# gusset panel torn (the male crotch sits ~3 cm below the female bridge). Melting the panel
+# (06b) smoothed the interior but not the torn silhouette; widening the snap window (v2)
+# shredded the inner-thigh walls. This does what worked on the chest bow: excise the residue
+# box and solve a rim-anchored bi-harmonic membrane to convergence — no donor reach limits,
+# no orientation risk, C1-continuous with the surrounding skin by construction.
+#
+#   blender --background --python 06c_gusset_membrane.py -- <06_crotched.blend> <out.blend>
+import bpy, sys, time
+from collections import deque
+import numpy as np
+
+argv = sys.argv[sys.argv.index("--") + 1:]
+BLEND, OUT = argv[0], argv[1]
+t0 = time.time()
+
+# residue box: the gusset bridge underside + torn seam + gathered inner-thigh cloth edges.
+# (bridge underside starts at z~0.41; tear at ~0.44; gathers reach ~0.46 and |x|~0.05)
+BOX_X = 0.055
+BOX_Z0, BOX_Z1 = 0.385, 0.462
+
+
+def log(m):
+    print(f"[gusset {time.time()-t0:6.1f}s] {m}", flush=True)
+
+
+bpy.ops.wm.open_mainfile(filepath=BLEND)
+ob = max([o for o in bpy.data.objects if o.type == 'MESH'],
+         key=lambda o: len(o.data.vertices))
+me = ob.data
+n_v = len(me.vertices)
+co = np.empty(n_v * 3)
+me.vertices.foreach_get("co", co)
+co = co.reshape(-1, 3)
+
+n_e = len(me.edges)
+ev0 = np.empty(n_e * 2, dtype=np.int32)
+me.edges.foreach_get("vertices", ev0)
+ev0 = ev0.reshape(-1, 2)
+
+
+def grow_edges(mask, rings, ev):
+    m = mask.copy()
+    for _ in range(rings):
+        hit = m[ev[:, 0]] | m[ev[:, 1]]
+        m2 = m.copy()
+        m2[ev[:, 0]] |= hit
+        m2[ev[:, 1]] |= hit
+        m = m2
+    return m
+
+
+box = (np.abs(co[:, 0]) < BOX_X) & (co[:, 2] > BOX_Z0) & (co[:, 2] < BOX_Z1)
+free_m = grow_edges(box, 2, ev0)
+collar = grow_edges(free_m, 2, ev0) & ~free_m
+S = np.nonzero(free_m | collar)[0]
+in_S = np.zeros(n_v, dtype=bool)
+in_S[S] = True
+glb = np.full(n_v, -1, dtype=np.int64)
+glb[S] = np.arange(len(S))
+se = ev0[in_S[ev0].all(axis=1)]
+a_ = glb[se[:, 0]]
+b_ = glb[se[:, 1]]
+deg = np.zeros(len(S))
+np.add.at(deg, a_, 1.0)
+np.add.at(deg, b_, 1.0)
+free = free_m[S]
+log(f"box {box.sum()} verts -> free {free.sum()}, collar {(~free).sum()}")
+
+
+def Ls(X):
+    out = deg[:, None] * X
+    np.add.at(out, a_, -X[b_])
+    np.add.at(out, b_, -X[a_])
+    return out
+
+
+def A_op(U):
+    X = np.zeros((len(S), 3))
+    X[free] = U
+    return Ls(Ls(X))[free]
+
+
+Xc = np.zeros((len(S), 3))
+Xc[~free] = co[S[~free]]
+rhs = -Ls(Ls(Xc))[free]
+U = co[S[free]].copy()
+r = rhs - A_op(U)
+p = r.copy()
+rs = (r * r).sum()
+rs0 = rs
+for it in range(120000):
+    Ap = A_op(p)
+    al = rs / max((p * Ap).sum(), 1e-30)
+    U += al * p
+    r -= al * Ap
+    rs2 = (r * r).sum()
+    if rs2 < 1e-18 or rs2 < rs0 * 1e-14:
+        break
+    p = r + (rs2 / rs) * p
+    rs = rs2
+co_new = co.copy()
+co_new[S[free]] = U
+delta = np.linalg.norm(co_new - co, axis=1)
+log(f"membrane: {free.sum()} verts healed (CG {it} iters, "
+    f"rel residual {rs2/max(rs0,1e-30):.2e}), max move {delta.max():.4f}")
+
+me.vertices.foreach_set("co", co_new.reshape(-1))
+me.update()
+if me.has_custom_normals:
+    vn = np.empty(n_v * 3, dtype=np.float32)
+    me.vertices.foreach_get("normal", vn)
+    me.normals_split_custom_set_from_vertices(vn.reshape(-1, 3))
+bpy.context.preferences.filepaths.save_version = 0  # no .blend1 autosave
+bpy.ops.wm.save_as_mainfile(filepath=OUT)
+log(f"WROTE {OUT}")
+print("GUSSET_DONE")