Repo tidy: logs consolidated, 15/16 scripts tracked, docs synced (#615/#611/#603)

Run outputs moved to logs/ (incl. sda partition-table backup). New from
the 15:57-16:03 parallel session: 16-grow-root-online.sh (RAN: / = 431G
online, swap removed by design — GROW-ROOT-RUNBOOK superseded) and
15-docker-to-data2.sh (staged, not run). README/NEXT/RUNBOOK/REBUILD
reflect current reality. Moot rdp-testprep timer removed from the VM.

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

logs/sda-table.backup-20260901-160332

@@ -0,0 +1,9 @@
+label: dos
+label-id: 0x2d03b9dd
+device: /dev/sda
+unit: sectors
+sector-size: 512
+
+/dev/sda1 : start=        2048, size=   585547776, type=83, bootable
+/dev/sda2 : start=   585551870, size=    18425858, type=f
+/dev/sda5 : start=   585551872, size=    18425856, type=82