feat: add pose and appearance endpoints for face detail display

- Add GET /api/v1/file/:file_uuid/pose endpoint
- Add GET /api/v1/file/:file_uuid/appearance endpoint
- Keypoint deduplication (highest confidence)
- Add face-groups endpoint for Studio integration
- Add profile routes (trace-profile, file-profile)
- Update API documentation

src/api/server.rs

@@ -26,6 +26,7 @@ use super::media_api;
 use super::middleware::unified_auth;
 use super::pipeline;
 use super::processing;
+use super::profile;
 use super::scan;
 use super::search::search_routes;
 use super::tmdb_api;
@@ -119,12 +120,14 @@ pub async fn start_server(host: &str, port: u16) -> anyhow::Result<()> {
         .merge(identity_agent_api::identity_agent_routes())
         .merge(media_api::bbox_routes())
         .merge(media_api::media_proxy_routes())
+        .merge(media_api::pose_appearance_routes())
         .merge(trace_agent_api::trace_agent_routes())
         .merge(search_routes())
         .merge(llm_search::llm_smart_routes())
         .merge(universal_search_routes())
         .merge(pipeline::pipeline_routes())
         .merge(checkin_api::checkin_routes())
+        .merge(profile::profile_routes())
         .layer(axum::middleware::from_fn_with_state(
             state.api_state.clone(),
             unified_auth,