009: Polish bacon fixes, OTA host scripts, and migration docs.

Restore disable_configstore, EuiccDisabler and thermal CDEV guards, branding
and rebuild/sync helpers; document device roles, laptop migration, and Gitea.

Co-authored-by: Cursor <cursoragent@cursor.com>

docs/007-abu-vs-ours-susfs.md

@@ -1,3 +1,7 @@
+<!-- Status: parallel KernelSU track — see docs/007-parallel-on-009.md -->
+
+> **Status: parallel KernelSU / SusFS track** (kept). Bridge to current Magisk ROM: [`007-parallel-on-009.md`](007-parallel-on-009.md). Magisk ship resume: [`009-handoff-20261008.md`](009-handoff-20261008.md).
+
 # abu (KernelSU-Next) vs ours (ReSukiSU) — SusFS integration checklist
 
 > **Historical hypothesis checklist:** The [2026-09-16 source audit](007-susfs-source-audit.md)