From b3f2b8fdc5999726649c0e0511f7a6080f1291b7 Mon Sep 17 00:00:00 2001
From: jenkins <jenkins@bstein.dev>
Date: Mon, 10 Aug 2026 05:20:09 -0300
Subject: [PATCH] fix(hermes): keep router compatible during rollout

---
 services/hermes/plugins/auto-router/__init__.py | 13 ++++++++++---
 services/hermes/plugins/auto-router/plugin.yaml |  1 -
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/services/hermes/plugins/auto-router/__init__.py b/services/hermes/plugins/auto-router/__init__.py
index 32bb17fd..24562c7a 100644
--- a/services/hermes/plugins/auto-router/__init__.py
+++ b/services/hermes/plugins/auto-router/__init__.py
@@ -854,9 +854,16 @@ def register(ctx: Any) -> None:
     ctx.register_hook(
         "pre_internal_route", lambda **kwargs: _pre_internal_route(ctx, **kwargs)
     )
-    ctx.register_hook(
-        "pre_subagent_route", lambda **kwargs: _pre_subagent_route(ctx, **kwargs)
-    )
+    # ConfigMaps can reconcile before the matching immutable image digest. The
+    # older image does not know this hook yet, so retain parent/internal routing
+    # during that short rollout window and enable child routing after image
+    # automation advances the pod.
+    try:
+        ctx.register_hook(
+            "pre_subagent_route", lambda **kwargs: _pre_subagent_route(ctx, **kwargs)
+        )
+    except ValueError:
+        pass
     ctx.register_hook("post_llm_call", lambda **kwargs: _post_turn_route(ctx, **kwargs))
     ctx.register_command(
         "route",
diff --git a/services/hermes/plugins/auto-router/plugin.yaml b/services/hermes/plugins/auto-router/plugin.yaml
index 7b0fd2d9..9c961998 100644
--- a/services/hermes/plugins/auto-router/plugin.yaml
+++ b/services/hermes/plugins/auto-router/plugin.yaml
@@ -4,4 +4,3 @@ description: Jetson-assisted provider, model, and reasoning-effort routing for A
 provides_hooks:
   - pre_turn_route
   - pre_internal_route
-  - pre_subagent_route