Fix dashboard 500s: raise httpx read timeout on /team/list + /spend/logs calls

app/main.py

@@ -788,7 +788,9 @@ async def litellm_get_or_create_team(email: str, budget: float) -> str:
     check /team/list first.
     """
     alias = f"member:{email}"
-    async with httpx.AsyncClient() as client:
+    # /team/list has grown slow as usage accumulates; the httpx default 5s
+    # read timeout was too short (root cause of dashboard 500s on 2026-09-26).
+    async with httpx.AsyncClient(timeout=httpx.Timeout(connect=15.0, read=60.0, write=15.0, pool=15.0)) as client:
         r = await client.get(
             f"{LITELLM_BASE}/team/list",
             headers={"Authorization": f"Bearer {LITELLM_MASTER_KEY}"},
@@ -1490,7 +1492,10 @@ async def broker_get_usage(email: str) -> dict:
     spend = 0.0
     reset_at = None
 
-    async with httpx.AsyncClient() as client:
+    # /team/list and /spend/logs have grown slow as usage accumulates; the
+    # httpx default 5s read timeout was too short and made /broker/usage 500.
+    client_timeout = httpx.Timeout(connect=15.0, read=60.0, write=15.0, pool=15.0)
+    async with httpx.AsyncClient(timeout=client_timeout) as client:
         # 1. Team spend + budget
         r = await client.get(
             f"{LITELLM_BASE}/team/list",