sandbox: add OLLIE_*_PATH to yaml overlays; remove stale beads/denote mounts

- default.yaml: add OLLIE_MEMORY_PATH and OLLIE_PLAN_PATH to env and rw lists
- restricted.yaml: replace {HOME}/mnt/beads and {HOME}/mnt/denote with
  {OLLIE_MEMORY_PATH} and {OLLIE_PLAN_PATH} rwx entries; add vars to env list
- update core and 9p submodule refs

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

9p

@@ -1 +1 @@
-Subproject commit 7f8fc0e033c38b976ceb88aa41165431b5964c9d
+Subproject commit d832965710df0a2e1c29e39be611539553ffe00f

core

@@ -1 +1 @@
-Subproject commit ac77e11afab67eacef101e2e4ac4da06765eb294
+Subproject commit 1b98305d92dd843c64f1ae40bbee17bda41be952

sandbox/default.yaml

@@ -62,6 +62,8 @@ filesystem:
     - "{XDG_DATA_HOME}/nvim"
     - "{XDG_STATE_HOME}/nvim"
     - "{HOME}/.local/share/anvillm"
+    - "{OLLIE_MEMORY_PATH}"
+    - "{OLLIE_PLAN_PATH}"
     - "{HOME}/.vimrc"
     - "{HOME}/.vim"
     - "{HOME}/.emacs.d"
@@ -99,6 +101,8 @@ env:
   - AGENT_SKILLS_PATH
   - NAMESPACE
   - OLLIE_9MOUNT
+  - OLLIE_MEMORY_PATH
+  - OLLIE_PLAN_PATH
   - HOME
   - TMPDIR
   - AGENT_ID

sandbox/restricted.yaml

@@ -26,11 +26,13 @@ filesystem:
     - "{CWD}"
     - "{HOME}/mnt/ollie"
     - "{HOME}/mnt/anvillm"
-    - "{HOME}/mnt/beads"
-    - "{HOME}/mnt/denote"
+    - "{OLLIE_MEMORY_PATH}"
+    - "{OLLIE_PLAN_PATH}"
 env:
   - NAMESPACE
   - OLLIE_9MOUNT
+  - OLLIE_MEMORY_PATH
+  - OLLIE_PLAN_PATH
   - PATH
   - HOME
   - PLAN9