Simplify architecture: read-only cache + one-way SD upload

Replace OverlayFS + sync daemon with two independent subsystems:
- Read-only cache: rclone --read-only + Samba read only = yes
- SD Uploader: staging → SFTP direct upload to NAS (temp file + rename)

Remove: OverlayFS, sync daemon, three-timestamp model, write-back,
conflict detection, dirty file tracking. Net -299 lines.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
grabbit 2026-02-17 14:35:43 +08:00
parent d40997312b
commit 3caddc6370

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