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Remove root folder block from the browser — user can now select /storage/emulated/0 exactly like Autosync. If MANAGE_EXTERNAL_STORAGE is not granted a red banner appears with a direct "Grant" button that opens the Android All files access settings screen. Root guard removed from SyncEngine; individual file failures (e.g. root-level writes) are already caught and logged per-file. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>