add initial crates and apps

crates/chattyness-user-ui/src/api/avatars.rs

@@ -0,0 +1,39 @@
+//! Avatar API handlers for user UI.
+//!
+//! Handles avatar rendering data retrieval.
+//! Note: Emotion switching is now handled via WebSocket.
+
+use axum::{
+    extract::{Path, State},
+    Json,
+};
+use sqlx::PgPool;
+
+use chattyness_db::{
+    models::AvatarRenderData,
+    queries::{avatars, realms},
+};
+use chattyness_error::AppError;
+
+use crate::auth::AuthUser;
+
+/// Get current avatar render data.
+///
+/// GET /api/realms/{slug}/avatar/current
+///
+/// Returns the render data for the user's active avatar in this realm.
+pub async fn get_current_avatar(
+    State(pool): State<PgPool>,
+    AuthUser(user): AuthUser,
+    Path(slug): Path<String>,
+) -> Result<Json<AvatarRenderData>, AppError> {
+    // Get realm
+    let realm = realms::get_realm_by_slug(&pool, &slug)
+        .await?
+        .ok_or_else(|| AppError::NotFound(format!("Realm '{}' not found", slug)))?;
+
+    // Get render data
+    let render_data = avatars::get_avatar_render_data(&pool, user.id, realm.id).await?;
+
+    Ok(Json(render_data))
+}