Follow bar values so a dead watch speaks, date them by their reading, and widen the path check (hq ADR 0260)

A watch that died left the block silent, a removed block kept its value, and a value
frozen at its source looked fresh because its file was new. The follower now rereads a
silent value and says so, drops removed blocks, and dates each file by the reading's
own time. The path check takes /etc and /usr/local/lib in, ignores what a container sees
inside itself, and lists the five findings standing today, which may only go.

modules/power/module.json

@@ -23,7 +23,8 @@
   "state": [
     {
       "name": "draw",
-      "ttl-seconds": 30
+      "ttl-seconds": 30,
+      "per-machine": true
     }
   ],
   "tools": [