westfarn f2eb4b7152 Add PCM carrier-route postcard pick-and-send (#12) ...

## Summary
Closes #11.
Mirrors ai_ml_operations/monica_site#15.

- Direct-mail compose can target the postcard mailing list **or** find and select one or two USPS carrier routes by ZIP (optional radius).
- Estimated cost is shown per route and for the selection (PCM design pricing, else `PCM_POSTCARD_PRICE_*` fallback).
- Selected routes order through PCM `POST /order/postcard/with-list-count` — occupant addresses are not imported into Contacts.
- Not official EDDM postage; PCM FirstClass/Standard purchased occupant lists on carrier routes.

## Test plan
- [ ] Campaign compose: mailing-list audience still quotes list size × per-piece cost.
- [ ] Switch to USPS carrier routes, search a ZIP, pick 1–2 routes, confirm household count + estimated cost.
- [ ] Saving without a selection is rejected; saving with a quote creates one contact-less Message and shows the route panel on the report.
- [ ] Send places `/order/postcard/with-list-count` (not per-recipient `/order/postcard`).
- [ ] `uv run python manage.py test directmail.tests.CarrierRoutePostcardTests directmail.tests.PostcardDesignPickTests`

Reviewed-on: #12

2026-09-21 13:29:53 -07:00

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postcard

Add PCM carrier-route postcard pick-and-send (#12)

2026-09-21 13:29:53 -07:00

__init__.py

Populate the client website template with catalog feature flags.

2026-08-26 07:55:26 -05:00