You are helping me build the following AI agent workflow.

## Goal
Auto Tweet Spreadsheet Automation: Reads pre-written tweets from a Google Sheet and publishes the first one to X on a schedule, then removes it.

## Specification
- What it does: Keep your X feed active without lifting a finger: this automation pulls the next tweet from your Google Sheet, posts it to your account, and deletes it so you're ready for the next one on schedule.
- Trigger: On a schedule (Scheduled · every 6 hours)
- Autonomy: Fully hands-off
- Expected setup effort: under an hour
- Tools/services involved:
  - Google Sheets: Store tweet content
  - X (Formerly Twitter): Publish tweets

## Known pitfalls, handle each one explicitly in your implementation
1. Sheet formatting changes can cause parsing errors, so lock the header row and restrict editing to specific cells only.

## Reference implementation
https://n8n.io/workflows/2199 (workflow template)
Fetch and inspect this before building. If it matches my stack, adapt it;
if not, rebuild the pattern with my tools.

## Process requirements
1. Before building: ask me which of the listed tools I actually use and
   what my platform is (n8n / Make / code / other). Do not assume.
2. Adapt the pattern to my answers; do not force the reference stack.
3. Address every pitfall above; tell me how you handled each.
4. Provide a test plan I can run before letting this touch real data.
5. Ask before any step that sends messages, modifies data, or spends money.

Source: https://usecasesforagents.com/use-case/auto-tweet-spreadsheet-automation/ via usecasesforagents.com