feat(api): standardize REST contracts and auth

app/api/v1/router.py

@@ -98,11 +98,10 @@ api_router.include_router(access.router, tags=["Access Control"])
 api_router.include_router(agent_auth.router, tags=["Agent Auth"])
 api_router.include_router(
     admin_metadata.router,
-    prefix="/admin",
     tags=["Metadata Admin"],
 )
 api_router.include_router(model_import.router, tags=["Model Administration"])
-api_router.include_router(audit.router, prefix="/audit", tags=["Audit Logs"])
+api_router.include_router(audit.router, tags=["Audit Logs"])
 api_router.include_router(meta.router, tags=["Metadata"])
 api_router.include_router(
     project.router,
@@ -190,19 +189,16 @@ api_router.include_router(
 )
 api_router.include_router(
     leakage.router,
-    prefix="/leakage",
     tags=["Leakage"],
     dependencies=[burst_run_access],
 )
 api_router.include_router(
     burst_detection.router,
-    prefix="/burst-detection",
     tags=["Burst Detection"],
     dependencies=[burst_run_access],
 )
 api_router.include_router(
     burst_location.router,
-    prefix="/burst-location",
     tags=["Burst Location"],
     dependencies=[burst_run_access],
 )