diff --git a/src/core/dependencies.py b/src/core/dependencies.py
index 6da54ee..5e9df33 100644
--- a/src/core/dependencies.py
+++ b/src/core/dependencies.py
@@ -568,12 +568,15 @@ async def shutdown_clients():
 
 # Per-probe timeout for the concurrent health checks below, in seconds.
 #
-# Bounded well under the container healthcheck's 10s timeout (see Dockerfile)
-# so that five probes run concurrently under asyncio.gather cannot approach
-# it even if all five hang. A probe that has no timeout of its own (neo4j,
-# qdrant) otherwise falls back to its driver's default — 30s for both — which
-# is what let a hung dependency (not a failing one) flip the container
-# unhealthy.
+# Bounded well under the container healthcheck's 10s timeout (see Dockerfile).
+# Because every probe runs concurrently under one asyncio.gather, the wall time
+# is one bound rather than the sum, so adding probes does not erode the margin —
+# all eight can hang and the call still returns in ~2s.
+#
+# A probe with no bound of its own falls back to its client's default: 30s for
+# the neo4j and qdrant drivers, 30s for the scheduler client, and none at all
+# for system settings. Each is past the 10s budget on its own, which is what let
+# a hung dependency — not a failing one — flip the container unhealthy.
 HEALTH_PROBE_TIMEOUT = 2.0