You are helping me build the following AI agent workflow.

## Goal
E-commerce Orders Inventory Feedback: Automates e-commerce ops by notifying teams of new orders via webhook, alerting on low stock in Google Sheets.

## Specification
- What it does: You receive instant Slack or email notifications for every new order so your team can start fulfillment immediately. The system also monitors your Google Sheets inventory daily to alert you when stock runs low, ensuring you never miss a restock opportunity. Finally, it automatically sends post-purchase feedback emails to customers after their delivery arrives via Gmail.
- Trigger: Triggered by an event (Event · on new order OR Scheduled · daily)
- Autonomy: Fully hands-off
- Expected setup effort: about an afternoon
- Tools/services involved:
  - n8n: Workflow automation orchestration
  - Google Sheets: Inventory data storage and retrieval
  - Slack: Team notifications for orders and alerts
  - Gmail: Sending fulfillment and feedback emails

## Known pitfalls, handle each one explicitly in your implementation
1. Webhook payloads may contain unexpected null values so add error handling nodes to prevent workflow crashes.
2. Slack message formatting breaks if special characters are not escaped properly so sanitize all input strings before sending.

## Reference implementation
https://n8n.io/workflows/6362 (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/automate-e-commerce-orders-inventory-feedback/ via usecasesforagents.com