Rebuild runbook + state capture + docs sync to current reality (#615)

REBUILD.md maps a full rebuild (PVE qm spec incl. nested-virt flag,
guest OS/accounts/dotfiles bootstrap, script order, package baseline,
verification checklist). 14-capture-state.sh regenerates docs/state
snapshots (guest apt/units/sysctl/fstab/docker + PVE 5111 config).
Docs sync: stale multiqueue-owed text removed from NEXT/REPORT/RUNBOOK;
README script list + open-work list current.

Details: https://projects.knownelement.com/issues/615

docs/state/guest-disks.txt

@@ -0,0 +1,29 @@
+NAME     SIZE FSTYPE MOUNTPOINT
+sda      438G        
+├─sda1 279.2G ext4   /
+├─sda2     1K        
+└─sda5   8.8G swap   [SWAP]
+sdb      400G        
+└─sdb1   400G ext4   /data2
+sdc      200G        
+└─sdc1   200G ext4   /data1
+nbd0       0B        
+nbd1       0B        
+nbd2       0B        
+nbd3       0B        
+nbd4       0B        
+nbd5       0B        
+nbd6       0B        
+nbd7       0B        
+nbd8       0B        
+nbd9       0B        
+nbd10      0B        
+nbd11      0B        
+nbd12      0B        
+nbd13      0B        
+nbd14      0B        
+nbd15      0B        
+Filesystem      Size  Used Avail Use% Mounted on
+/dev/sda1       274G   88G  173G  34% /
+/dev/sdc1       196G  2.1M  186G   1% /data1
+/dev/sdb1       393G  2.1M  373G   1% /data2