feat(tower): transfers api and retry endpoint

tower/lisael_server.py

@@ -92,6 +92,9 @@ class H(BaseHTTPRequestHandler):
             self._json({"box": st, "delta": delta, "staging_count": len(C.staging_files())}); return
         if path == "/api/routines":
             self._json({"routines": C.routines_load()}); return
+        if path == "/api/transfers":
+            self._json({"active": C.transfers_active(),
+                        "history": C.transfers_history()}); return
         self.send_error(404)
 
     # --- POST ---
@@ -196,6 +199,15 @@ class H(BaseHTTPRequestHandler):
             delta = C.compute_routines_delta(st.get("have", []))
             started = C.try_push(ip, delta, subdir="routines")
             self._json({"ip": ip, "delta": len(delta), "started": started}); return
+        if path == "/api/transfers/retry":
+            st = C.box_state_load()
+            ip = st.get("ip")
+            if not ip:
+                self._json({"error": "box never registered"}, 409); return
+            res = C.retry_failed(ip)
+            if not res["count"]:
+                self._json({"error": "rien a relancer"}, 409); return
+            self._json(res, 202); return
         self.send_error(404)
 
     # --- DELETE ---