Proposed Structured Hardening Framework for Slack to Rails Command Boundaries

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Following the discussion in the previous security remediation thread, I’d like to propose a more structured boundary-based hardening model for Slack-to-Rails command execution.

Rather than addressing safeguards individually, it may help to formalize remediation across three control layers:

1. Command Validation Boundary
   Slack inputs should be treated as untrusted external API calls.
   Enforce strict schema validation at the controller layer using strong parameters and explicit command mapping.
   Reject unknown or malformed arguments early.

2. Authorization and Approval Boundary
   In addition to role checks, consider:

• Explicit allowlists per Slack user or group
• Environment-scoped restrictions
• Guard clauses before database operations
• Optional approval gating for high-impact commands

3. Execution and Persistence Boundary
   Database writes should:

• Use parameterized queries only
• Be wrapped in transactions
• Include safe rollback paths
• Log mutation summaries for traceability

Audit logging should capture:

• Initiating Slack identity
• Command parameters
• Result state
• Correlation ID
• Timestamp

This layered model may help align safeguards with risk classification and improve long-term governance consistency, especially as the v2 structure introduces new task classifications.

Happy to refine further based on how the new structure evolves.