chat-hook: identify DMs correctly

pkg/arvo/app/chat-hook.hoon

@@ -20,8 +20,10 @@
       state-3
       state-4
       state-5
+      state-6
   ==
 ::
++$  state-6  [%6 state-base]
 +$  state-5  [%5 state-base]
 +$  state-4  [%4 state-base]
 +$  state-3  [%3 state-base]
@@ -50,7 +52,7 @@
   $%  [%chat-update update:store]
   ==
 --
-=|  state-5
+=|  state-6
 =*  state  -
 ::
 %-  agent:dbug
@@ -79,14 +81,14 @@
     =/  old  !<(versioned-state old-vase)
     =|  cards=(list card)
     |-
-    ?:  ?=(%5 -.old)
+    ?:  ?=(%6 -.old)
       [cards this(state old)]
-    ?:  ?=(?(%3 %4) -.old)
+    ?:  ?=(?(%3 %4 %5) -.old)
       =.  cards
         %+  weld  cards
         ^-  (list card)
         [%pass /pokeme %agent [our.bol %chat-hook] %poke %noun !>(%fix-dm)]~
-      $(-.old %5)
+      $(-.old %6)
     ?:  ?=(%2 -.old)
       =.  cards
         %+  weld  cards
@@ -397,9 +399,7 @@
   |=  [=path host=ship]
   ^-  (list card)
   ?>  ?=([@ @ *] path)
-  ?.  =('~' i.path)
-    ~
-  =/  =ship  (slav %p i.t.path)
+  =/  =ship  (slav %p i.path)
   ?:  =(ship our.bol)
     ::  local dm, no need to do cleanup
     ~
@@ -407,6 +407,8 @@
     ::  correctly initialized, no need to do cleanup
     ::
     ~
+  ?.  =((end 3 4 i.t.path) 'dm--')
+    ~
   :-  =-  [%pass /fixdm %agent [our.bol %chat-view] %poke %chat-view-action -]
       !>  ^-  action:view
       [%delete path]