You are helping me build the following AI agent workflow.

## Goal
Monitor CRM Hiring Spikes and Alert Sales: Daily check of HubSpot companies for hiring spikes via PredictLeads; alerts sales on Slack when job counts jump over 50%.

## Specification
- What it does: You get instant Slack alerts when your HubSpot contacts show a hiring spike of over 50% detected by PredictLeads. The system automatically tracks these changes in Google Sheets and updates the company record so you can act immediately on new sales opportunities.
- Trigger: On a schedule (Scheduled · daily 9 AM)
- Autonomy: Fully hands-off
- Expected setup effort: about an afternoon
- Tools/services involved:
  - HubSpot: CRM company data and updates
  - PredictLeads API: Fetching job opening counts
  - Google Sheets: Storing historical hiring data
  - Slack: Sending alerts to sales team

## Known pitfalls, handle each one explicitly in your implementation
1. Google Sheets row indexing can drift if rows are manually deleted or inserted, so use unique company IDs as keys instead of relying on static row numbers.
2. HubSpot property update failures might occur due to field type mismatches, so validate that the alert text fits within the character limit of the custom text field.
3. Slack message formatting can break if special characters are present in job titles, so sanitize input strings before constructing the webhook payload.

## Reference implementation
https://n8n.io/workflows/14100 (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/monitor-crm-hiring-spikes-and-alert-sales/ via usecasesforagents.com