QuarkPan Backup Suite

Use this skill to deploy a production-safe backup workflow with these goals:

• Keep automated workspace backups on Quark Drive.
• Use the OpenList-style non-parallel whole-file upload flow for cloud writes.
• Avoid QuarkPan's fragile large-file parallel_upload / X-Oss-Hash-Ctx path.
• Enforce account binding so uploads cannot silently go to a wrong account.
• Keep system rollback snapshots manual-only (no auto overwrite risk).
• Provide reproducible restore steps and distributable skill package.

Current upload architecture

The current production path is:

1. QuarkPan remains responsible for QR login / auth status / account binding guard.
2. upload-quarkpan.sh runs the account guard before any cloud write.
3. Actual cloud writes use quark-openlist-upload.py, a standalone OpenList/Alist-compatible uploader:
• no parallel_upload: true
• no synthetic X-Oss-Hash-Ctx
• uses server-returned metadata.part_size
• uses server-returned upload_url host
• uploads archive and .sha256 as whole files
4. CLOUD_SPLIT_FALLBACK=0 by default. Do not split backups unless the user explicitly requests a temporary emergency workaround.

Workflow

1. Run preflight checks with scripts/check_env.sh.
2. Configure backup policy using references/commands.md.
3. Enforce account guard (bind, check, rotate-*) before uploads.
4. Verify restore path with dry-run first.
5. Keep Lighthouse snapshots manual-only; use weekly prompt policy.
6. Package/share this skill with package_skill.py.

Guardrails

• Do not auto-apply destructive restore.
• Do not auto-create system snapshots by cron.
• Require explicit confirmation for snapshot creation and snapshot rollback.
• Keep cloud upload failure non-fatal for local backup success.
• Do not log or publish Quark cookies, preview URLs, or auth tokens.
• Do not revive the old QuarkPan large-file multipart path as the default uploader.

References

• Command cookbook: references/commands.md
• Security and rotation policy: references/security-policy.md
• Sharing/export steps: references/share.md