You are helping me build the following AI agent workflow.

## Goal
Festival Social Media Automation: Daily at 8 AM, the agent fetches today's festival from Sheets, generates culturally authentic text and images via Gemini.

## Specification
- What it does: You get culturally authentic social media content ready every day at 8 AM by having the agent pull today's festival details from your Google Sheets. It then generates optimized text and images using Gemini and automatically posts them to X and Facebook so you can engage your audience without lifting a finger.
- Trigger: On a schedule (Scheduled · daily 8:00 AM)
- Autonomy: Fully hands-off
- Expected setup effort: a few focused days
- Tools/services involved:
  - Google Sheets: Festival calendar and data storage
  - Google Gemini Chat Model: AI content and image generation
  - X (Formerly Twitter): Social media posting
  - Facebook Graph API: Facebook page posting

## Known pitfalls, handle each one explicitly in your implementation
1. Facebook Graph API requires page access tokens which expire quickly so implement a token refresh mechanism.
2. Cultural missteps can cause backlash so include a human-in-the-loop approval step for sensitive festivals.
3. Image generation models may produce inconsistent styles so set a fixed seed or style prompt for brand consistency.

## Reference implementation
https://n8n.io/workflows/5765 (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/festival-social-media-automation/ via usecasesforagents.com