LangGraph migration guide

# 1. Configure checkpointing
config = {"interrupts": ["approval_node"]}

# 2. Define interrupt node
def approval_node(state):
    raise Interrupt("Amount > £100, approve?")

# 3. Build notification system  ← weeks
# 4. Build approval UI          ← weeks
# 5. Handle timeouts            ← days
# 6. Write to audit log         ← days

# 7. Resume on approval
graph.invoke(
    None,
    Command(resume=True),
    config
)

# Still need:
# - Slack integration
# - Dashboard
# - Escalation rules
# - Retry logic
# - State persistence

import cheqpoint

# Exact same semantics as interrupt()
# - but with everything else included

result = cheqpoint.request(
    action="issue_refund",
    amount=200,
    currency="GBP",
    customer="james@example.com",
    context="SLA breach - 4hr outage",
    notify=[
        "slack:#approvals",
        "email:ops@company.com"
    ]
)

if result.approved:
    execute_refund()

# Notification ✓   UI ✓
# Timeout ✓        Audit ✓
# Slack ✓          Dashboard ✓