Document FUSE mount and 9pfuse dependency

README.md

@@ -2,6 +2,10 @@
 
 9P server for [denote](https://protesilaos.com/emacs/denote) notes.
 
+## Dependencies
+
+- [plan9port](https://9fans.github.io/plan9port/) (provides `9pfuse`)
+
 ## Installation
 
 ```sh
@@ -17,6 +21,9 @@ denotesrv status
 denotesrv stop
 ```
 
+On startup, the server automatically mounts at `~/mnt/denote` via 9pfuse.
+Use `-mount /path` to override the mount location.
+
 ## Environment
 
 | Variable | Default | Description |
@@ -28,16 +35,18 @@ denotesrv stop
 
 ```
 denote/
-  ctl         (write) filter <query>, cd <path>
+  ctl         (write) filter <query>, cd <path>, refresh
   event       (read)  Event stream
   index       (read)  Note metadata (respects filter)
   new         (write) Create note: "'title' tag1,tag2"
   n/
     <id>/
       backlinks (read)  Notes linking to this note
+      body      (rw)    File content
       ctl       (write) 'd' to delete
       keywords  (rw)    Tags
       path      (rw)    Filesystem path
+      signature (rw)    Note signature
       title     (rw)    Note title
 ```