kiln: fix subscription paths, add marks

pkg/arvo/lib/hood/kiln.hoon

@@ -212,8 +212,8 @@
   ++  emil  |=((list card:agent:gall) vats(kiln (^emil +<)))
   ++  give
     |%
-    ++  snap  [%give %fact ~[/vats] %kiln-vats-snap !>(ark)]
-    ++  diff  |=(d=^diff [%give %fact ~[/vats] %kiln-vats-diff !>(d)])
+    ++  snap  [%give %fact ~[/kiln/vats] %kiln-vats-snap !>(ark)]
+    ++  diff  |=(d=^diff [%give %fact ~[/kiln/vats] %kiln-vats-diff !>(d)])
     --
   ++  pass
     |%
@@ -672,6 +672,8 @@
   |=  =path
   ?>  (team:title our src)
   ?+    path  ~|(kiln-path/path !!)
+    [%vats ~]    abet
+  ::
       [%ark ~]
     abet(moz :_(moz [%give %fact ~ %kiln-vats-snap !>(ark)]))
   ==

pkg/arvo/mar/kiln-install.hoon

@@ -0,0 +1,29 @@
+|%
++$  install
+  [local=term =ship =desk] 
+--
+|_  inst=install
+++  grad  %noun
+++  grow
+  |%
+  ++  noun  inst
+  ++  json
+    %-  pairs:enjs:format
+    :~  local+s+local.inst
+        desk+s+desk.inst
+        ship+s+(scot %p ship.inst)
+    ==
+  --
+++  grab
+  |%
+  ++  noun  install
+  ++  json
+    ^-  $-(^json install)
+    =,  dejs:format
+    %-  ot
+    :~  local+so
+        ship+(su ;~(pfix sig fed:ag))
+        desk+so
+    ==
+  --
+--

pkg/arvo/mar/kiln-uninstall.hoon

@@ -0,0 +1,13 @@
+|_  =desk
+++  grad  %noun
+++  grow
+  |%
+  ++  noun  desk
+  ++  json  s+desk
+  --
+++  grab
+  |%
+  ++  noun  ^desk
+  ++  json  so:dejs:format
+  --
+--