Character Appearance Phase 1 Done

Bump appearance payloads to version 2 and add `morphRegions` and `facialBoneMorphs` capture, serialization, and proxy application. Also fix head-part syncing when sender and proxy counts differ by reallocating the proxy array instead of deferring the whole list, and update the Python harness and protocol docs to match.

plugin/include/F4TRemotePlayerState.h

@@ -49,9 +49,19 @@ namespace F4T::RemotePlayerState
 		float large{};
 	};
 
+	// Bone-based facial morph (TESNPC::facialBoneRegionSliderValues entry).
+	// Mirrors BGSCharacterMorph::Transform (position, rotation, scale).
+	struct RemoteAppearanceFacialBoneMorph
+	{
+		std::uint32_t id{};
+		float position[3]{};
+		float rotation[3]{};
+		float scale[3]{ 1.0F, 1.0F, 1.0F };
+	};
+
 	struct RemoteAppearance
 	{
-		std::uint32_t version{ 1 };
+		std::uint32_t version{ 2 };
 		std::uint32_t raceFormId{};
 		float height{ 1.0F };
 		RemoteAppearanceMorphWeight morphWeight;
@@ -60,6 +70,8 @@ namespace F4T::RemotePlayerState
 		std::uint32_t facialHairColorFormId{};
 		std::vector<std::uint32_t> headPartFormIds;
 		std::vector<RemoteAppearanceMorph> morphSliders;
+		std::vector<float> morphRegionSliders;
+		std::vector<RemoteAppearanceFacialBoneMorph> facialBoneMorphs;
 	};
 
 	struct RemotePlayerState