MIRPAMO integration groundwork: strip_skin converter, --self-anim render mode

- pipeline/strip_skin.py: with-skin Mixamo FBX -> anim-only, normalises
  numbered bone namespaces (mixamorigN: -> mixamorig:)
- render_moves.py --self-anim renders actions baked into the char file
  (MIRPAMO retarget output)
- phrtt2-nsfw + daphne rigged via MIRPAMO autorig (clean weights);
  17-clip kit retargeted but pose quality poor — retarget stage needs
  a bonemap/markers tuning pass before these ship as fighters

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

pipeline/render_moves.py

@@ -26,7 +26,7 @@ def parse_args():
     argv = sys.argv[sys.argv.index("--") + 1:] if "--" in sys.argv else []
     ap = argparse.ArgumentParser()
     ap.add_argument("--char", required=True)
-    ap.add_argument("--clips", required=True, help="dir or comma-separated fbx list")
+    ap.add_argument("--clips", default="", help="dir or comma-separated fbx list")
     ap.add_argument("--out", required=True)
     ap.add_argument("--size", type=int, default=512)
     ap.add_argument("--rotz", type=float, default=90.0,
@@ -42,6 +42,9 @@ def parse_args():
                     help="comma list of mesh-name substrings to tear (punch alpha "
                          "holes in their textures); output dirs get an @torn suffix")
     ap.add_argument("--torn-seed", type=int, default=7)
+    ap.add_argument("--self-anim", action="store_true",
+                    help="ignore --clips; render each action already baked into "
+                         "the character file (MIRPAMO retarget output)")
     ap.add_argument("--strip", default="",
                     help="comma list of mesh-name substrings to REMOVE (clothes "
                          "knocked off); output dirs get an @stripped suffix")
@@ -301,17 +304,25 @@ def main():
         attach_gear(arm, args.attach)
         variant_suffix = "@geared"
 
-    clips_arg = str(Path(args.clips).expanduser())
-    p = Path(clips_arg)
-    if p.is_dir():
-        clip_paths = sorted(p.glob("*.fbx"))
+    # (clip_path, action): external clip files, or the character's own
+    # baked actions when --self-anim (MIRPAMO retarget output)
+    jobs = []
+    if args.self_anim:
+        for act in bpy.data.actions:
+            jobs.append((Path(act.name + ".glb"), act))
     else:
-        clip_paths = [Path(c).expanduser() for c in args.clips.split(",")]
+        clips_arg = str(Path(args.clips).expanduser())
+        p = Path(clips_arg)
+        if p.is_dir():
+            clip_paths = sorted(p.glob("*.fbx"))
+        else:
+            clip_paths = [Path(c).expanduser() for c in args.clips.split(",")]
+        jobs = [(c, None) for c in clip_paths]
 
     out_root = Path(args.out).expanduser()
     sc = bpy.context.scene
-    for clip in clip_paths:
-        action = import_clip_action(str(clip), arm)
+    for clip, baked in jobs:
+        action = baked if baked is not None else import_clip_action(str(clip), arm)
         assign_action(arm, action)
         f0, f1 = (int(action.frame_range[0]), int(action.frame_range[1]))
         if args.max_frames > 0:

pipeline/strip_skin.py

@@ -0,0 +1,45 @@
+# Blender headless: convert with-skin Mixamo FBX clips to anim-only FBX
+# (deletes meshes, keeps armature+action). MIRPAMO's retarget mapper needs
+# anim-only sources.
+#
+# Usage: Blender -b --python pipeline/strip_skin.py -- --clips "a.fbx,b.fbx" --out dir
+import argparse
+import sys
+from pathlib import Path
+
+import bpy
+
+
+def parse_args():
+    argv = sys.argv[sys.argv.index("--") + 1:] if "--" in sys.argv else []
+    ap = argparse.ArgumentParser()
+    ap.add_argument("--clips", required=True)
+    ap.add_argument("--out", required=True)
+    return ap.parse_args(argv)
+
+
+args = parse_args()
+out = Path(args.out).expanduser()
+out.mkdir(parents=True, exist_ok=True)
+for clip in args.clips.split(","):
+    clip = Path(clip).expanduser()
+    dest = out / clip.name
+    if dest.exists():
+        print("SKIP", clip.name)
+        continue
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    bpy.ops.import_scene.fbx(filepath=str(clip), use_anim=True)
+    for o in list(bpy.data.objects):
+        if o.type == "MESH":
+            bpy.data.objects.remove(o, do_unlink=True)
+    # normalise numbered Mixamo namespaces (mixamorig7: -> mixamorig:) so
+    # downstream mappers (MIRPAMO retarget) match by exact name
+    import re
+    for o in bpy.data.objects:
+        if o.type == "ARMATURE":
+            for b in o.data.bones:
+                b.name = re.sub(r"^mixamorig\d+:", "mixamorig:", b.name)
+    bpy.ops.export_scene.fbx(filepath=str(dest), use_selection=False,
+                             add_leaf_bones=False, bake_anim=True)
+    print("STRIPPED", clip.name)
+print("DONE")