fix: face thumbnail crop using bbox parameters

- Added bbox_x, bbox_y, bbox_w, bbox_h fields to ThumbQuery
- face_thumbnail now uses bbox params for ffmpeg crop filter
- Frontend passes bboxX/Y/Width/Height which maps to bbox_x/y/w/h

src/api/media_api.rs

@@ -775,6 +775,10 @@ struct ThumbQuery {
     y: Option<i32>,
     w: Option<i32>,
     h: Option<i32>,
+    bbox_x: Option<i32>,
+    bbox_y: Option<i32>,
+    bbox_w: Option<i32>,
+    bbox_h: Option<i32>,
     trace_id: Option<i32>,
 }
 
@@ -863,7 +867,12 @@ async fn face_thumbnail(
         }
     }
 
-    if let (Some(x), Some(y), Some(w), Some(h)) = (q.x, q.y, q.w, q.h) {
+    let crop_x = q.x.or(q.bbox_x);
+    let crop_y = q.y.or(q.bbox_y);
+    let crop_w = q.w.or(q.bbox_w);
+    let crop_h = q.h.or(q.bbox_h);
+
+    if let (Some(x), Some(y), Some(w), Some(h)) = (crop_x, crop_y, crop_w, crop_h) {
         if let (Some(vw), Some(vh)) = (video_width, video_height) {
             crate::core::thumbnail::validator::validate_crop(x, y, w, h, vw, vh).map_err(|e| {
                 tracing::warn!("[thumbnail] Crop validation failed: {}", e);
@@ -873,7 +882,7 @@ async fn face_thumbnail(
     }
 
     let select = format!("select=eq(n\\,{})", frame);
-    let vf = if let (Some(x), Some(y), Some(w), Some(h)) = (q.x, q.y, q.w, q.h) {
+    let vf = if let (Some(x), Some(y), Some(w), Some(h)) = (crop_x, crop_y, crop_w, crop_h) {
         format!("{},crop={}:{}:{}:{}", select, w, h, x, y)
     } else {
         select
@@ -1282,6 +1291,10 @@ async fn media_proxy_handler(
                 y: params.get("y").and_then(|v| v.parse().ok()),
                 w: params.get("w").and_then(|v| v.parse().ok()),
                 h: params.get("h").and_then(|v| v.parse().ok()),
+                bbox_x: params.get("bbox_x").and_then(|v| v.parse().ok()),
+                bbox_y: params.get("bbox_y").and_then(|v| v.parse().ok()),
+                bbox_w: params.get("bbox_w").and_then(|v| v.parse().ok()),
+                bbox_h: params.get("bbox_h").and_then(|v| v.parse().ok()),
                 trace_id: params.get("trace_id").and_then(|v| v.parse().ok()),
             };
             face_thumbnail(State(state), Path(uuid.clone()), Query(thumb_query))