feat: enhance agent heartbeat handling and validate onboarding goal fields

backend/app/api/agent.py

@@ -20,7 +20,7 @@ from app.models.agents import Agent
 from app.models.boards import Board
 from app.models.gateways import Gateway
 from app.models.tasks import Task
-from app.schemas.agents import AgentCreate, AgentHeartbeatCreate, AgentNudge, AgentRead
+from app.schemas.agents import AgentCreate, AgentHeartbeat, AgentHeartbeatCreate, AgentNudge, AgentRead
 from app.schemas.approvals import ApprovalCreate, ApprovalRead
 from app.schemas.board_memory import BoardMemoryCreate, BoardMemoryRead
 from app.schemas.board_onboarding import BoardOnboardingRead
@@ -376,14 +376,10 @@ async def agent_heartbeat(
     session: Session = Depends(get_session),
     agent_ctx: AgentAuthContext = Depends(get_agent_auth_context),
 ) -> AgentRead:
-    if agent_ctx.agent.name != payload.name:
-        payload = AgentHeartbeatCreate(
-            name=agent_ctx.agent.name,
-            status=payload.status,
-            board_id=payload.board_id,
-        )
-    return await agents_api.heartbeat_or_create_agent(  # type: ignore[attr-defined]
-        payload=payload,
+    # Heartbeats must apply to the authenticated agent; agent names are not unique.
+    return agents_api.heartbeat_agent(  # type: ignore[attr-defined]
+        agent_id=str(agent_ctx.agent.id),
+        payload=AgentHeartbeat(status=payload.status),
         session=session,
         actor=_actor(agent_ctx),
     )

backend/app/api/agents.py

@@ -588,7 +588,7 @@ def heartbeat_agent(
     payload: AgentHeartbeat,
     session: Session = Depends(get_session),
     actor: ActorContext = Depends(require_admin_or_agent),
-) -> Agent:
+) -> AgentRead:
     agent = session.get(Agent, agent_id)
     if agent is None:
         raise HTTPException(status_code=status.HTTP_404_NOT_FOUND)
@@ -613,8 +613,20 @@ async def heartbeat_or_create_agent(
     payload: AgentHeartbeatCreate,
     session: Session = Depends(get_session),
     actor: ActorContext = Depends(require_admin_or_agent),
-) -> Agent:
-    agent = session.exec(select(Agent).where(Agent.name == payload.name)).first()
+) -> AgentRead:
+    # Agent tokens must heartbeat their authenticated agent record. Names are not unique.
+    if actor.actor_type == "agent" and actor.agent:
+        return heartbeat_agent(
+            agent_id=str(actor.agent.id),
+            payload=AgentHeartbeat(status=payload.status),
+            session=session,
+            actor=actor,
+        )
+
+    statement = select(Agent).where(Agent.name == payload.name)
+    if payload.board_id is not None:
+        statement = statement.where(Agent.board_id == payload.board_id)
+    agent = session.exec(statement).first()
     if agent is None:
         if actor.actor_type == "agent":
             raise HTTPException(status_code=status.HTTP_404_NOT_FOUND)

backend/app/api/tasks.py

@@ -544,6 +544,20 @@ def update_task(
         )
         session.commit()
         session.refresh(task)
+
+        if task.assigned_agent_id and task.assigned_agent_id != previous_assigned:
+            if actor.actor_type == "agent" and actor.agent and task.assigned_agent_id == actor.agent.id:
+                return task
+            assigned_agent = session.get(Agent, task.assigned_agent_id)
+            if assigned_agent:
+                board = session.get(Board, task.board_id) if task.board_id else None
+                if board:
+                    _notify_agent_on_task_assign(
+                        session=session,
+                        board=board,
+                        task=task,
+                        agent=assigned_agent,
+                    )
         return task
     if actor.actor_type == "agent":
         if actor.agent and actor.agent.board_id and task.board_id:

backend/app/schemas/board_onboarding.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 from datetime import datetime
 from uuid import UUID
 
+from pydantic import model_validator
 from sqlmodel import SQLModel
 
 
@@ -21,6 +22,13 @@ class BoardOnboardingConfirm(SQLModel):
     success_metrics: dict[str, object] | None = None
     target_date: datetime | None = None
 
+    @model_validator(mode="after")
+    def validate_goal_fields(self):
+        if self.board_type == "goal":
+            if not self.objective or not self.success_metrics:
+                raise ValueError("Confirmed goal boards require objective and success_metrics")
+        return self
+
 
 class BoardOnboardingRead(SQLModel):
     id: UUID

backend/tests/test_board_schema.py

@@ -1,5 +1,6 @@
 import pytest
 
+from app.schemas.board_onboarding import BoardOnboardingConfirm
 from app.schemas.boards import BoardCreate
 
 
@@ -28,3 +29,22 @@ def test_goal_board_allows_missing_objective_before_confirmation():
 
 def test_general_board_allows_missing_objective():
     BoardCreate(name="General", slug="general", board_type="general")
+
+
+def test_onboarding_confirm_requires_goal_fields():
+    with pytest.raises(ValueError):
+        BoardOnboardingConfirm(board_type="goal")
+
+    with pytest.raises(ValueError):
+        BoardOnboardingConfirm(board_type="goal", objective="Ship onboarding")
+
+    with pytest.raises(ValueError):
+        BoardOnboardingConfirm(board_type="goal", success_metrics={"emails": 3})
+
+    BoardOnboardingConfirm(
+        board_type="goal",
+        objective="Ship onboarding",
+        success_metrics={"emails": 3},
+    )
+
+    BoardOnboardingConfirm(board_type="general")

frontend/src/app/boards/[boardId]/page.tsx

@@ -2066,6 +2066,15 @@ export default function BoardDetailPage() {
               <Textarea
                 value={chatInput}
                 onChange={(event) => setChatInput(event.target.value)}
+                onKeyDown={(event) => {
+                  if (event.key !== "Enter") return;
+                  if (event.nativeEvent.isComposing) return;
+                  if (event.shiftKey) return;
+                  event.preventDefault();
+                  if (isChatSending) return;
+                  if (!chatInput.trim()) return;
+                  void handleSendChat();
+                }}
                 placeholder="Message the board lead. Tag agents with @name."
                 className="min-h-[120px]"
               />

frontend/src/components/BoardOnboardingChat.tsx

@@ -202,9 +202,9 @@ export function BoardOnboardingChat({
 
   const submitAnswer = useCallback(() => {
     const trimmedOther = otherText.trim();
+    if (selectedOptions.length === 0 && !trimmedOther) return;
     const answer =
       selectedOptions.length > 0 ? selectedOptions.join(", ") : "Other";
-    if (!answer && !trimmedOther) return;
     void handleAnswer(answer, trimmedOther || undefined);
   }, [handleAnswer, otherText, selectedOptions]);
 
@@ -294,6 +294,12 @@ export function BoardOnboardingChat({
               placeholder="Other..."
               value={otherText}
               onChange={(event) => setOtherText(event.target.value)}
+              onKeyDown={(event) => {
+                if (event.key !== "Enter") return;
+                event.preventDefault();
+                if (loading) return;
+                submitAnswer();
+              }}
             />
             <Button
               variant="outline"