fix(goal): only announce a replaced goal when one was still live

Gate quality finding (Medium): _set read mgr.state.goal regardless of status,
so `/goal clear` (or a done goal) followed by `/goal <text>` printed
"(replaced the previous goal) was: ..." about a goal that was already gone.
Use mgr.has_goal() (active/paused) to decide what counts as replaced.

hermes_cli/goal_command.py

@@ -147,7 +147,7 @@ def _set(mgr, arg, *, drafting, last_user_message, render, progress):
     else:
         headline, contract = goals.parse_contract(arg)
         contract = contract if not contract.is_empty() else None
-    previous = (mgr.state.goal or "").strip() if mgr.state is not None else ""
+    previous = mgr.state.goal if mgr.has_goal() else ""
     state = mgr.set(headline or arg, contract=contract)
     output = render("gateway.goal.set", "⊙ Goal set ({budget}-turn budget): {goal}",
                     budget=state.max_turns, goal=state.goal)

tests/hermes_cli/test_goal_dispatch.py

@@ -145,3 +145,6 @@ def test_double_dash_sets_control_word_goal_and_announces_the_replace():
     result = _dispatch(mgr, '-- pause the nightly cron')
     assert goals.load_goal(mgr.session_id).goal == 'pause the nightly cron'
     assert 'was: original objective' in result.output
+    mgr.clear()
+    fresh = goals.GoalManager(session_id=mgr.session_id)  # gateway/TUI reload per command
+    assert 'replaced' not in _dispatch(fresh, 'fresh objective').output