govfee: itemize the estimate in the email + add a 'fix my fee' dispute path

The gov-fee email now lists exactly what the amount covers (full breakdown) so
the customer can check it for accuracy, with two clear actions: a ✅ pay link and
a ❓ 'something looks wrong' link to /order/dispute.

New /order/dispute page shows the fee breakdown and lets the customer describe
what's wrong; it opens an 'issue' support ticket pre-tagged with the order
(amount + label + their note) via /api/v1/tickets, so ops corrects the fee
before any payment is taken. The /order/pay page also shows the itemized
breakdown and a dispute link.

scripts/workers/services/gov_fee.py

@@ -243,16 +243,28 @@ def gov_fee_payment_url(child_order_number: str) -> str:
     return f"{SITE}/order/pay?order={child_order_number}"
 
 
+def gov_fee_dispute_url(child_order_number: str) -> str:
+    """Public 'this estimate looks wrong' page that opens a support ticket
+    pre-tagged with the order so ops can correct the fee."""
+    return f"{SITE}/order/dispute?order={child_order_number}"
+
+
 def send_gov_fee_payment_email(customer_email: str, customer_name: str,
                                service_label: str, entity_name: str,
                                estimate: GovFeeEstimate, child_order_number: str) -> bool:
-    """Email the customer a payment link for the government fee."""
+    """Email the customer an itemized government-fee bill + payment link, plus a
+    link to dispute the amount if it looks wrong."""
     if not customer_email:
         return False
     url = gov_fee_payment_url(child_order_number)
+    dispute = gov_fee_dispute_url(child_order_number)
     amt = f"${estimate.cents / 100:,.2f}"
-    qualifier = "" if estimate.exact else (
-        " This is an estimate billed at cost; if the state's final fee differs we "
+    # Itemized breakdown so the customer can check it for accuracy.
+    items = "\n".join(f"    - {line}" for line in (estimate.breakdown or [estimate.label]))
+    qualifier = (
+        "This amount is the state's confirmed fee."
+        if estimate.exact else
+        "This is an estimate billed at cost. If the state's final fee differs we "
         "refund any overage or bill the small difference.")
     try:
         import smtplib
@@ -260,13 +272,17 @@ def send_gov_fee_payment_email(customer_email: str, customer_name: str,
         body = (
             f"Hi {customer_name or 'there'},\n\n"
             f"Your {service_label} for {entity_name} is ready to file. The only "
-            f"remaining step is the government/state fee, which we collect at cost:\n\n"
-            f"  {service_label}\n"
-            f"  Government fee: {amt}\n"
-            f"  {estimate.label}\n\n"
-            f"Pay securely here (choose your preferred method — bank transfer/ACH "
-            f"has no processing fee):\n{url}\n\n"
+            f"remaining step is the government/state fee, which we collect at cost.\n\n"
+            f"Here is exactly what the {amt} covers — please review it for accuracy:\n\n"
+            f"  {estimate.label}\n"
+            f"{items}\n"
+            f"    ----------------------------------------\n"
+            f"    Total government fee: {amt}\n\n"
             f"{qualifier}\n\n"
+            f"✅ If this looks right, pay securely here (choose your method — "
+            f"bank transfer/ACH has no processing fee):\n{url}\n\n"
+            f"❓ If something looks wrong (wrong fleet size, states, weight, or "
+            f"amount), tell us here and we'll fix it before you pay:\n{dispute}\n\n"
             f"As soon as the fee is paid we file with the state and send your "
             f"confirmation.\n\n"
             f"Order: {child_order_number}\n"