You are helping me build the following AI agent workflow.

## Goal
Construction Blueprint to Google Sheets Automation: Uploads a blueprint to Google Drive and automatically extracts structured attributes into a new Google Sheet row via VLM Run.

## Specification
- What it does: Monitors a specified Google Drive folder for new construction blueprint uploads. It automatically downloads the file and sends it to VLM Run for visual language model analysis to extract key attributes. The system then fetches the details as JSON data and appends normalized fields, such as document number and revision history, to a designated Google Sheet row.
- Trigger: Triggered by an event (Event · on new file in Google Drive)
- Autonomy: Fully hands-off
- Expected setup effort: about an afternoon
- Tools/services involved:
  - Google Drive: Trigger and download blueprint files
  - VLM Run: Visual analysis of construction blueprints
  - Google Sheets: Store extracted structured data

## Known pitfalls, handle each one explicitly in your implementation
1. Large blueprint files may exceed API payload limits so you should compress images or split pages before sending them to VLM Run.
2. File permissions on Google Drive might block the download step if the service account lacks access, verify the OAuth scope includes drive.readonly or drive.files.

## Reference implementation
https://n8n.io/workflows/7956 (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/construction-blueprint-to-google-sheets-automation/ via usecasesforagents.com