avatar (#14440)

* avatar

* refactor avatar display: unify rendering and resolve at use time

  - Extract buildAvatarWidget() in common.dart to share avatar rendering
    logic across desktop settings, desktop CM and mobile CM
  - Add resolve_avatar_url() in Rust, exposed via FFI (SyncReturn),
    to resolve relative avatar paths (e.g. "/avatar/xxx") to absolute URLs
  - Store avatar as-is in local config, only resolve when displaying
    (settings page) or sending (LoginRequest)
  - Resolve avatar in LoginRequest before sending to remote peer
  - Add error handling for network image load failures
  - Guard against empty client.name[0] crash
  - Show avatar in mobile settings page account tile

Signed-off-by: 21pages <sunboeasy@gmail.com>

* web: implement mainResolveAvatarUrl via js getByName

Signed-off-by: 21pages <sunboeasy@gmail.com>

* increase ipc Data enum size limit to 120 bytes

Signed-off-by: 21pages <sunboeasy@gmail.com>

---------

Signed-off-by: 21pages <sunboeasy@gmail.com>
Co-authored-by: 21pages <sunboeasy@gmail.com>

src/client.rs

@@ -33,7 +33,7 @@ use crate::{
     create_symmetric_key_msg, decode_id_pk, get_rs_pk, is_keyboard_mode_supported,
     kcp_stream::KcpStream,
     secure_tcp,
-    ui_interface::{get_builtin_option, use_texture_render},
+    ui_interface::{get_builtin_option, resolve_avatar_url, use_texture_render},
     ui_session_interface::{InvokeUiSession, Session},
 };
 #[cfg(feature = "unix-file-copy-paste")]
@@ -2625,6 +2625,20 @@ impl LoginConfigHandler {
         } else {
             (my_id, self.id.clone())
         };
+        let mut avatar = get_builtin_option(keys::OPTION_AVATAR);
+        if avatar.is_empty() {
+            avatar = serde_json::from_str::<serde_json::Value>(&LocalConfig::get_option(
+                "user_info",
+            ))
+            .ok()
+            .and_then(|x| {
+                x.get("avatar")
+                    .and_then(|x| x.as_str())
+                    .map(|x| x.trim().to_owned())
+            })
+            .unwrap_or_default();
+        }
+        avatar = resolve_avatar_url(avatar);
         let mut display_name = get_builtin_option(keys::OPTION_DISPLAY_NAME);
         if display_name.is_empty() {
             display_name =
@@ -2684,6 +2698,7 @@ impl LoginConfigHandler {
             })
             .into(),
             hwid,
+            avatar,
             ..Default::default()
         };
         match self.conn_type {