Integrate humanoid walk/run animations and per-clip pose speed sliders

- Import Mixamo humanoid Walking + Running FBX, switch rig type to Humanoid
- Wire walkClip/runClip with per-clip speeds on Pose_Idle (walk 1.4, run 1.5)
- Add per-animation speed sliders (Range 0.1-3, default 1) to PlayerPose SO,
  applied per frame in PlayerPoseController for live tuning
- Reorganize pose assets: replace Pose_TPose with Pose_Hold, prune legacy
  Paintman-Run/-TPose .anim and paintman_UV.FBX
- Ignore UMotion plugin data/editor folders

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

Assets/Poses/Pose_Hold.asset

@@ -10,7 +10,12 @@ MonoBehaviour:
   m_Enabled: 1
   m_EditorHideFlags: 0
   m_Script: {fileID: 11500000, guid: e3e6fee2893b9d848b8b1ccca743c14f, type: 3}
-  m_Name: Pose_TPose
+  m_Name: Pose_Hold
   m_EditorClassIdentifier: Assembly-CSharp::PlayerPose
-  clip: {fileID: 7400000, guid: 04d9bfa04f5cc4b46891f0bd8f3b0e54, type: 2}
+  clip: {fileID: 7400000, guid: b4b88b2d2f749a94fbcdc7c0447cd73c, type: 2}
+  clipSpeed: 1
+  walkClip: {fileID: 0}
+  walkClipSpeed: 1
+  runClip: {fileID: 0}
+  runClipSpeed: 1
   ceilingYOffset: 0

Assets/Poses/Pose_Idle.asset

@@ -13,4 +13,9 @@ MonoBehaviour:
   m_Name: Pose_Idle
   m_EditorClassIdentifier: Assembly-CSharp::PlayerPose
   clip: {fileID: 7400000, guid: 18925b0fe0029224aa6d9f4d9ca9ab72, type: 2}
+  clipSpeed: 1
+  walkClip: {fileID: -203655887218126122, guid: ced260b15c0643b46af865dc5a990bc0, type: 3}
+  walkClipSpeed: 1.4
+  runClip: {fileID: -203655887218126122, guid: a4d4588e12cac6f48a17583c08a100d2, type: 3}
+  runClipSpeed: 1.5
   ceilingYOffset: 0

Assets/Poses/Pose_Star.asset

@@ -13,4 +13,9 @@ MonoBehaviour:
   m_Name: Pose_Star
   m_EditorClassIdentifier: Assembly-CSharp::PlayerPose
   clip: {fileID: 7400000, guid: 933a7fdefa4f6974b9ed61bd940da6ed, type: 2}
+  clipSpeed: 1
+  walkClip: {fileID: 0}
+  walkClipSpeed: 1
+  runClip: {fileID: 0}
+  runClipSpeed: 1
   ceilingYOffset: 1