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>

.gitignore

@@ -43,6 +43,8 @@ ccache/
 .env
 .env.*
 .local-artifacts/
+# Bootanimation build tree (large PNG frames; zip optional on USB / host)
+artifacts/
 yuh-golden-pass.log
 lineage-webview-arm64/
 aosp-webview*.apk