log probing

frontend/js/videos.js

@@ -721,6 +721,7 @@ App.videos = App.videos || {};
             const controller = new AbortController();
             const timer = setTimeout(() => controller.abort(), DIRECT_PROBE_TIMEOUT_MS);
             let ok = false;
+            let detail = '';
             try {
                 // A simple GET (no custom headers) avoids a CORS preflight. If
                 // the response is readable and successful, CORS + reachability
@@ -733,14 +734,17 @@ App.videos = App.videos || {};
                     signal: controller.signal
                 });
                 ok = res.ok || res.status === 206;
+                detail = `HTTP ${res.status}`;
                 controller.abort();
             } catch (err) {
                 ok = false;
+                detail = (err && err.name === 'AbortError') ? 'timeout' : (err && err.message) || 'fetch failed';
             } finally {
                 clearTimeout(timer);
             }
             App.videos._directStatus.set(url, ok);
             directPending.delete(url);
+            console.log(`[direct-probe] ${ok ? 'DIRECT' : 'PROXY '} (${detail}) ${url}`);
             return ok;
         })();
         directPending.set(url, promise);