feat(userbot,api,frontend): file links, media downloads, story hold-pause, drop scheduled dupes

backend/src/api/app.py

@@ -22,6 +22,7 @@ from api.routers import (
     custom_emoji,
     discover,
     events,
+    files,
     folders,
     media,
     peers,
@@ -29,6 +30,7 @@ from api.routers import (
     presence,
     profile,
     search,
+    shares,
     social,
     stories,
     watches,
@@ -88,6 +90,8 @@ app.include_router(peers.router)
 app.include_router(discover.router)
 app.include_router(annotations.router)
 app.include_router(watches.router)
+app.include_router(shares.router)
+app.include_router(files.router)
 
 app.mount("/mcp", mcp_app)