You are helping me build the following AI agent workflow.

## Goal
TheHive Case Management via Slack: Manage TheHive cases directly in Slack by updating assignees, severity, and status without switching contexts.

## Specification
- What it does: Manage your TheHive cases directly from Slack by updating assignees, severity, and status without switching contexts. You can modify case attributes through simple form inputs in messages, ensuring updates reflect immediately across both platforms for rapid response.
- Trigger: Run manually (Event · on new case or update)
- Autonomy: Fully hands-off
- Expected setup effort: about an afternoon
- Tools/services involved:
  - Slack: User interface for case management and notifications
  - TheHive 5: Security incident case data source and target
  - HTTP Request: Connecting Slack actions to TheHive API

## Known pitfalls, handle each one explicitly in your implementation
1. Case ID mismatches can cause silent failures so always validate that the extracted case ID from the Slack payload exists in TheHive before sending update requests.

## Reference implementation
https://n8n.io/workflows/2577 (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/thehive-case-management-via-slack/ via usecasesforagents.com