backup-workbook

name: backup-workbook description: "This skill should be used every Friday end-of-day, or when the user says "back up the outreach workbook", "snapshot outreach-tasks.xlsx", or "save a weekly outreach backup". It copies the current outreach-tasks.xlsx to /06_reports/data/outreach-tasks-backup-YYYY-WW.xlsx, preserving the full workbook as it stood at week's end for rollback and audit."

A weekly snapshot of the single state-of-truth workbook. Cheap insurance for the cases where a future run corrupts the file, a Chrome MCP UI change causes a bad write, or the client wants to compare "what did we plan on Friday" against "what happened Monday."

When to run

Friday end-of-day, after metrics-weekly and outreach-weekly-report.
On-demand if the user asks for a manual backup before doing something risky (e.g., stopping several campaigns at once).

Inputs

02_inputs/outreach/outreach-tasks.xlsx
iso_week (YYYY-WW) — defaults to the current ISO week.

Behavior

Verify the source exists. If the workbook is missing, write a loud line to _errors.md — we've lost the state-of-truth, which is a real incident — and refuse.
Compute the target path. /rockstarr-ai/06_reports/data/outreach-tasks-backup-[iso_week].xlsx.
Check for collisions. If a backup already exists for this ISO week, keep both:
- Rename the existing file to outreach-tasks-backup-[iso_week]-v1.xlsx.
- Write the new one to the canonical name.
- If both V1 and V2 already exist, append V3, V4, etc.
Copy the file. Byte-for-byte. Do not open + re-serialize — a copy preserves the workbook exactly, including any manual client edits to sheets we did not touch.
Log. Append to /05_published/outreach/[today].md: backup-workbook — snapshot written to <target path>.

Output

backup_path
size_bytes
iso_week

What NOT to do

Do not delete older backups. Disk space is cheap; audit history is not. If storage becomes a problem, add a separate retention skill later.
Do not "clean up" the workbook on backup. The whole point is a faithful snapshot.
Do not back up _errors.md or publish-log files from this skill. Backup scope is the workbook.