diff --git a/pyproject.toml b/pyproject.toml
index 402feec0d..ab9d33799 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,7 @@ members = ["toad"]
 
 [tool.uv.sources]
 ui-theme = { git = "https://github.com/OpenHCSDev/ui-theme.git", rev = "5e58d8b5907cec4dbc8810a9329aaf902f69f675" }
-agent-comms = { git = "https://github.com/OpenHCSDev/agent-comms.git", rev = "47f9856b6762553ca10ef94e26de85b2ba069c0d" }
+agent-comms = { git = "https://github.com/OpenHCSDev/agent-comms.git", rev = "ca7b57b3d10ee4e769e9fe2c8ff33ab540f8536f" }
 textual = { git = "https://github.com/OpenHCSDev/textual.git", rev = "18f4e7a67403d56846ef5abf55c93e3e0639be33" }
 textual-diff-view = { git = "https://github.com/OpenHCSDev/textual-diff-view.git", rev = "8fa7d4d0db993ea3b761c2760ca9b6a56a6251e9" }
 
diff --git a/src/toad/conversation_turn.py b/src/toad/conversation_turn.py
index 6372969aa..c09692126 100644
--- a/src/toad/conversation_turn.py
+++ b/src/toad/conversation_turn.py
@@ -2,6 +2,7 @@
 from abc import abstractmethod
 from dataclasses import dataclass, replace
 
+from agent_comms.activity import ActivityState
 from agent_comms.declared_family import DeclaredFamily
 from agent_comms.turn_lease import TurnState
 
@@ -10,10 +11,15 @@ class TurnOwner(DeclaredFamily, affix="Turn"):
     managed_id = None
     activity = ""
     started_at = None
+    activity_state = ActivityState.IDLE
 
     @property
-    @abstractmethod
-    def busy(self) -> bool: ...
+    def presentation_status(self):
+        return self.activity_state.presentation_status
+
+    @property
+    def busy(self) -> bool:
+        return self.activity_state.busy
 
     @property
     def status(self) -> str:
@@ -57,20 +63,18 @@ def response_stream(self, delivery):
 
 @dataclass(frozen=True)
 class NoTurn(TurnOwner):
-    busy = False
     session_state = None
 
 
 @dataclass(frozen=True)
 class ClientTurn(TurnOwner):
-    busy = False
     session_state = "idle"
 
 
 @dataclass(frozen=True)
 class ActivityTurn(TurnOwner):
     activity: str
-    busy = True
+    activity_state = ActivityState.WORKING
     session_state = "busy"
 
     def with_activity(self, activity: str) -> TurnOwner:
@@ -83,7 +87,7 @@ class AgentTurn(TurnOwner):
     managed_id: str | None = None
     activity: str = "Thinking…"
     started_at: float | None = None
-    busy = True
+    activity_state = ActivityState.WORKING
     session_state = "busy"
 
     def matches_settlement(self, turn_id) -> bool:
@@ -106,6 +110,10 @@ class ManagedTurn(TurnOwner):
     def busy(self):
         return self.state.busy
 
+    @property
+    def activity_state(self):
+        return self.state.phase.activity_state
+
     @property
     def managed_id(self):
         return self.state.managed_id
diff --git a/src/toad/session_tracker.py b/src/toad/session_tracker.py
index b70b5b615..f88554663 100644
--- a/src/toad/session_tracker.py
+++ b/src/toad/session_tracker.py
@@ -58,7 +58,7 @@ def unread(self) -> UnreadPresentation:
 
     @property
     def busy(self) -> bool:
-        return self.row.busy
+        return self.row.status.busy
 
 
 @dataclass(frozen=True)
diff --git a/src/toad/widgets/channel_participants.py b/src/toad/widgets/channel_participants.py
index 50ba9b144..4c10f42de 100644
--- a/src/toad/widgets/channel_participants.py
+++ b/src/toad/widgets/channel_participants.py
@@ -37,7 +37,7 @@ def prepare_participants(people: tuple[ThreadRowModel, ...]) -> tuple[Content, C
         for presentation in people:
             summaries.append(f"{presentation.name}: {presentation.summary}")
             names.append(Content.styled(
-                presentation.label, "$warning" if presentation.busy else "$text-muted",
+                presentation.label, "$warning" if presentation.status.busy else "$text-muted",
             ).stylize(Style.from_meta({"@click": OpenTarget(presentation.name).click})))
         content = Content.assemble("Active: ", Content(" · ").join(names)) if names else Content("No active turns")
         return content, Content("\n".join(summaries))
diff --git a/src/toad/widgets/observed_thread_activity.py b/src/toad/widgets/observed_thread_activity.py
index 8129fd571..1d6ba0ca0 100644
--- a/src/toad/widgets/observed_thread_activity.py
+++ b/src/toad/widgets/observed_thread_activity.py
@@ -58,7 +58,7 @@ def activity_changed(self) -> None:
 
     @property
     def working(self) -> bool:
-        return self.row is not None and self.row.working
+        return self.row is not None and self.row.status.busy
 
 
 class ThreadStatusOwner:
diff --git a/src/toad/widgets/session_details.py b/src/toad/widgets/session_details.py
index 3465c354f..fc2fda009 100644
--- a/src/toad/widgets/session_details.py
+++ b/src/toad/widgets/session_details.py
@@ -68,11 +68,15 @@ def title_role(self) -> type[LineRole]:
             return NoticeRole
         row = self.row
         if row is not None and row.shown:
-            if row.attention:
-                return NoticeRole
-            if row.working:
-                return WorkingRole
-        elif self.turns is not None and self.turns.owner.busy:
+            status = row.status
+        elif self.turns is not None:
+            status = self.turns.owner.presentation_status
+        else:
+            return MutedRole
+        # Core owns the state; this is its one frontend paint decision.
+        if status.attention:
+            return NoticeRole
+        if status.busy:
             return WorkingRole
         return MutedRole
 
diff --git a/src/toad/widgets/session_sidebar.py b/src/toad/widgets/session_sidebar.py
index cdfe51787..5d73c7c93 100644
--- a/src/toad/widgets/session_sidebar.py
+++ b/src/toad/widgets/session_sidebar.py
@@ -35,7 +35,7 @@ def __init__(self, *args, **kwargs):
 
     @property
     def busy(self) -> bool:
-        return self.thread_row is not None and (self.action_status is not None or self.thread_row.busy)
+        return self.thread_row is not None and (self.action_status is not None or self.thread_row.status.busy)
 
     def show(self, row: ThreadRowModel, *, pinned: bool = False, action_status: str | None = None) -> None:
         """Render the model's row with this view's own decoration: pin and pending action."""
diff --git a/uv.lock b/uv.lock
index 91bd434fa..2c4a3f03e 100644
--- a/uv.lock
+++ b/uv.lock
@@ -21,10 +21,12 @@ wheels = [
 [[package]]
 name = "agent-comms"
 version = "0.1.0"
-source = { git = "https://github.com/OpenHCSDev/agent-comms.git?rev=47f9856b6762553ca10ef94e26de85b2ba069c0d#47f9856b6762553ca10ef94e26de85b2ba069c0d" }
+source = { git = "https://github.com/OpenHCSDev/agent-comms.git?rev=ca7b57b3d10ee4e769e9fe2c8ff33ab540f8536f#ca7b57b3d10ee4e769e9fe2c8ff33ab540f8536f" }
 dependencies = [
+    { name = "aiohttp" },
     { name = "metaclass-registry" },
     { name = "nominal-refactor-audit" },
+    { name = "pydantic" },
 ]
 
 [package.optional-dependencies]
@@ -304,7 +306,7 @@ dev = [
 [package.metadata]
 requires-dist = [
     { name = "agent-client-protocol", specifier = "==0.12.1" },
-    { name = "agent-comms", extras = ["acp"], git = "https://github.com/OpenHCSDev/agent-comms.git?rev=47f9856b6762553ca10ef94e26de85b2ba069c0d" },
+    { name = "agent-comms", extras = ["acp"], git = "https://github.com/OpenHCSDev/agent-comms.git?rev=ca7b57b3d10ee4e769e9fe2c8ff33ab540f8536f" },
     { name = "aiosqlite", specifier = "==0.22.1" },
     { name = "bashlex", specifier = "==0.18" },
     { name = "click", specifier = "==8.4.0" },
@@ -1023,7 +1025,7 @@ wheels = [
 [[package]]
 name = "nominal-refactor-audit"
 version = "0.1.0"
-source = { git = "https://github.com/OpenHCSDev/NominalRefactorAdvisor.git?subdirectory=skills%2Frefactor-audit&rev=9a98d72e10cd7ebae688b2e70d096f0ddc9a4c10#9a98d72e10cd7ebae688b2e70d096f0ddc9a4c10" }
+source = { git = "https://github.com/OpenHCSDev/NominalRefactorAdvisor.git?subdirectory=skills%2Frefactor-audit&rev=120c04fb9a0eb4afafab6d621d1c5fd421bb7552#120c04fb9a0eb4afafab6d621d1c5fd421bb7552" }
 
 [[package]]
 name = "notify-py"