feat(fulfillment): bundle/exclusion enforcement + REQUIRED_FIELDS + intake wiring (Phases 1/1.5/2)

- compliance-orders: hazmat-phmsa/state-emissions products, full REQUIRED_FIELDS
  table for all DOT/state/hazmat slugs, BUNDLE_COMPONENTS dedup + MUTUALLY_EXCLUSIVE
  enforcement on /batch (single source of truth, exported)
- checkout: empty ADMIN_ASSISTED_SLUGS (state/hazmat now get intake links)
- services/__init__: register HazmatPHMSAHandler + state-emissions handler
- state_trucking: _summarize_intake admin-todo enrichment
- Wizard: wire StateTruckingIntakeStep + step labels

scripts/workers/services/__init__.py

@@ -55,6 +55,8 @@ from .ein_application import EINApplicationHandler
 from .mailbox_setup import MailboxSetupHandler
 # Carrier close-out / trucking wrap-up (shutdown) + entity dissolution
 from .carrier_closeout import CarrierCloseoutHandler
+# PHMSA hazmat registration (admin-assisted, 49 CFR Part 107)
+from .hazmat_phmsa import HazmatPHMSAHandler
 
 SERVICE_HANDLERS: dict[str, type] = {
     "flsa-audit": FLSAAuditHandler,
@@ -134,6 +136,10 @@ SERVICE_HANDLERS: dict[str, type] = {
     "intrastate-authority":      StateTruckingHandler,
     "osow-permit":               StateTruckingHandler,
     "state-trucking-bundle":     StateTruckingHandler,
+    # ── Hazmat / PHMSA Registration ───────────────────────────────────
+    "hazmat-phmsa":              HazmatPHMSAHandler,
+    # ── State emissions / clean-truck (admin-assisted) ────────────────
+    "state-emissions":           StateTruckingHandler,
 }
 
 # Service slugs that operate on a telecom entity — used by job_server.py