Add a module that requires human approval before executing changes in the repository.

[MaximilianoAcri]

Motivation

Currently, AI agents in a repository can make autonomous changes without user confirmation. For many use cases (production systems, learning environments, safety-critical code), users want to review and approve changes before execution.

This is especially important for:

• E-commerce sites where breaking changes affect customers
• Learning/experimentation with AI tools
• Any system where human oversight is required

Proposal

Create an approval-gate module that:

1. Intercepts proposed changes - Before any modification, the module presents the proposal to the user
2. Shows proposal details - What, why, files affected, risk level
3. Waits for user decision - Approve, Reject, or Request More Info
4. Logs decisions - Maintains history of all approvals/rejections

Interface

# List pending proposals
sz approval list

# Approve proposal #1
sz approval approve 1

# Reject proposal #2  
sz approval reject 2

# Configure mode
sz config set approval.mode approve

Configuration Options

Mode	Behavior
manual	No automatic execution
approve	Propose and wait for approval
auto-low	Auto-apply low-risk changes
auto-all	All automatic (dangerous)

Module Structure

modules/approval-gate/
  module.yaml
  entry.sh
  approve.sh
  templates/proposal.md

Additional Features

• Risk assessment (low/medium/high)
• Notification before changes
• Integration with bus for other modules
• Configurable approval channels

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Interested in collaborating on this? I'd be happy to submit a PR once there's agreement on the spec.