Mint short links on piha.lc / beta.piha.li (#12)

## Summary
- Point `SHORTENER_BASE_URL` at `https://piha.lc` (prod) and `https://beta.piha.li` (beta).
- Stop documenting `shortener.aimloperations.com` as the mint host.

Closes #11.

Depends on url_shortening_service serving `/api/` on the short host.

## Test plan
- [ ] Set `SHORTENER_BASE_URL=https://beta.piha.li` and matching token in beta env
- [ ] Compose a campaign SMS and confirm mint hits beta.piha.li (not shortener-beta)
- [ ] Body contains `https://beta.piha.li/<code>`

Reviewed-on: #12

site/messaging/README.md

@@ -50,7 +50,7 @@ long HTTPS URL to `url_shortening_service` (`POST /api/links/`, Bearer
 `monica:<secret>`) and puts `short_url` (`https://piha.li/<code>`) in SMS,
 email hrefs, and postcard QR codes. Empty env → long UTM URL (local default).
 
-Mint against the **API host**, not `piha.li`. See `.env.example` / `.env.prod.example`.
+Mint against the short host (`https://piha.lc` / `https://beta.piha.li`). See `.env.example` / `.env.prod.example`.
 
 SMS correlation uses `message_id` (SMS id), then `destination_number` phone
 fallback. Do **not** treat webhook `id` as the SMS id.

site/messaging/shortener.py

@@ -1,6 +1,6 @@
-"""Server-to-server client for url_shortening_service (piha.li).
+"""Server-to-server client for url_shortening_service (piha.lc).
 
-Call the API host (`SHORTENER_BASE_URL`), never the public short domain.
+Call SHORTENER_BASE_URL (https://piha.lc / https://beta.piha.li).
 Auth: Authorization: Bearer <SHORTENER_API_TOKEN> (name:secret).
 """
 

site/messaging/tests.py

@@ -1598,7 +1598,7 @@ class CampaignUtmLinkTests(TestCase):
         }
         with self.settings(
             PUBLIC_SITE_URL="https://mkdrealtor.com",
-            SHORTENER_BASE_URL="https://shortener.aimloperations.com",
+            SHORTENER_BASE_URL="https://piha.lc",
             SHORTENER_API_TOKEN="monica:test-token",
         ):
             with patch(
@@ -1630,7 +1630,7 @@ class CampaignUtmLinkTests(TestCase):
         mock.text = '{"detail":"Unauthorized"}'
         with self.settings(
             PUBLIC_SITE_URL="https://mkdrealtor.com",
-            SHORTENER_BASE_URL="https://shortener.aimloperations.com",
+            SHORTENER_BASE_URL="https://piha.lc",
             SHORTENER_API_TOKEN="monica:bad",
         ):
             with patch("messaging.shortener.requests.post", return_value=mock):
@@ -1687,7 +1687,7 @@ class CampaignUtmLinkTests(TestCase):
         url = reverse("messaging:campaign_short_link")
         with self.settings(
             PUBLIC_SITE_URL="https://mkdrealtor.com",
-            SHORTENER_BASE_URL="https://shortener.aimloperations.com",
+            SHORTENER_BASE_URL="https://piha.lc",
             SHORTENER_API_TOKEN="monica:test-token",
         ):
             with patch("messaging.shortener.requests.post", return_value=mock):

site/monica_site/settings/base.py

@@ -332,9 +332,9 @@ NOMINATIM_USER_AGENT = env(
 )
 NOMINATIM_API_KEY = env("NOMINATIM_API_KEY", "")
 
-# --- URL shortener (piha.li) ---
-# Call the API host, never the public short domain. Empty = skip minting
-# (composer falls back to the long UTM URL). Token format: name:secret.
+# --- URL shortener (piha.lc) ---
+# Same host as SMS links. Empty = skip minting (composer falls back to the
+# long UTM URL). Token format: name:secret.
 SHORTENER_BASE_URL = env("SHORTENER_BASE_URL", "")
 SHORTENER_API_TOKEN = env("SHORTENER_API_TOKEN", "")
 SHORTENER_TIMEOUT_SECONDS = int(env("SHORTENER_TIMEOUT_SECONDS", "10") or "10")