You are helping me build the following AI agent workflow.

## Goal
Property Link Shortening and QR Codes: When a property listing row is added or updated in Google Sheets, it automatically generates a Bitly short link and QR code image.

## Specification
- What it does: Get shareable Bitly links and QR codes instantly whenever you add or update a property listing in your Google Sheets. This automation saves you from manually creating short URLs by automatically generating them and placing the image back into your sheet row for easy sharing.
- Trigger: Triggered by an event (Event · on new or updated row in Google Sheets)
- Autonomy: Fully hands-off
- Expected setup effort: about an afternoon
- Tools/services involved:
  - Google Sheets: Trigger and data storage for property listings
  - Bitly: Shortening long property URLs via API
  - QR Code API: Generating QR code images from shortened links

## Known pitfalls, handle each one explicitly in your implementation
1. QR code images may exceed Google Sheets cell size constraints, so resize the image or store it in Drive and link to it instead.
2. Authentication tokens for Bitly expire periodically, implement a refresh mechanism or use long-lived access tokens to avoid silent failures.

## Reference implementation
https://n8n.io/workflows/6407 (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-property-link-shortening-and-qr-codes/ via usecasesforagents.com