mcs150: fill all checkboxes/radios correctly + stamp explicit checkmarks

Fixes a batch of missing fields the FMCSA census does not provide and the
filler was mis-mapping:

- Corrected the question->field mapping to match the actual form: Q22 =
  COMPANY OPERATIONS (interstate/intrastate, 22xBox), Q23 = OPERATION
  CLASSIFICATIONS (for-hire/private/govt, 23xBox). These were swapped, and
  the bogus entity-type->23xBox map (no entity-type question exists on this
  form revision) was removed.
- Added proper radio-group handling for Reason for Filing (Biennial Update),
  Mailing-address (Same as principal vs below), and Q28 USDOT-revoked, with
  correct option indices (these are /0../n radios, not /Yes checkboxes; the
  old code set them to /Yes and never selected the right option).
- Map interstate/intrastate from the FMCSA census carrierOperationCode, and
  populate email/phone/mileage/cargo from intake.
- AcroForm checkbox/radio appearances use a ZapfDingbats glyph that
  poppler/Preview fail to render (value set but box looks empty). Now stamp
  an explicit X overlay into the page content for every 'on' box so it shows
  in every viewer and in the faxed output.

scripts/workers/services/mcs150_update.py

@@ -460,6 +460,23 @@ class MCS150UpdateHandler:
             "power_units":  s(c.get("totalPowerUnits")),
             "drivers":      s(c.get("totalDrivers")),
         }
+
+        # Interstate vs intrastate (form Q26/27). The census exposes this as
+        # carrierOperation.carrierOperationCode: A=Interstate, B=Intrastate
+        # Hazmat, C=Intrastate Non-Hazmat.
+        op = c.get("carrierOperation") or {}
+        code = (op.get("carrierOperationCode") or "").strip().upper()
+        if code == "A":
+            out["interstate_intrastate"] = "interstate"
+        elif code == "B":
+            out["interstate_intrastate"] = "intrastate_hazmat"
+        elif code == "C":
+            out["interstate_intrastate"] = "intrastate_non_hazmat"
+
+        # Passenger carrier flag (form Q29 passenger compliance cert).
+        if s(c.get("isPassengerCarrier")).upper() == "Y":
+            out["is_passenger_carrier"] = "yes"
+
         return {k: v for k, v in out.items() if v}
 
     def _check_current_status(self, dot_number: str) -> str: