Fix bounded avatar appearance recovery after login

crates/libremetaverse/CHANGES.md

@@ -3,6 +3,22 @@
 This file records intentional differences from the C# LibreMetaverse source. Preserve or
 re-evaluate these changes when importing a newer upstream version.
 
+## Bounded login appearance recovery
+
+- A successful login now consumes `AgentSettings.send_appearance`, initializes the shared
+  `AppearanceManager`, and starts one generation-fenced appearance request after the simulator is
+  ready.
+- Self `AvatarAppearance` acknowledgements are accepted as complete only when required baked
+  texture IDs, visual parameters, and the expected COF version are present. Transient failures use
+  bounded delayed forced rebakes; disconnects and simulator changes cancel stale work.
+- COF attachments are compared with simulator child prims by `AttachItemID`; only missing items are
+  restored through the existing attachment API. Non-secret structured recovery events expose the
+  bake path, counts, serial, retries, acknowledgement, and elapsed time.
+- Baked-texture capability responses are decoded as LLSD, as required by the simulator protocol,
+  instead of incorrectly treating their uploader and completion maps as JSON.
+
+Files: `src/network_manager.rs`, `src/appearance_manager.rs`, `src/asset_manager.rs`.
+
 ## OpenSim varregion dimensions
 
 - `GridRegion` retains the optional `MapBlockReply.Size` dimensions. Missing or zero dimensions