Inherit email link addresses from hosting and proxy settings

backend/app/services/recap_store.py

@@ -1,3 +1,4 @@
+from .public_urls import magent_public_url
 """Durable consent, schedule and delivery records for personal email recaps."""
 
 import hashlib
@@ -73,6 +74,7 @@ def read_one(sql: str, args=()) -> dict | None:
 
 def settings() -> dict:
     row = read_one("SELECT * FROM email_recap_settings WHERE id = 1")
+    row["public_url"] = magent_public_url(row["public_url"])
     return {key: (bool(value) if key == "enabled" else value) for key, value in row.items() if key != "id"}
 
 
@@ -82,6 +84,7 @@ def next_due(now: datetime, day: int, hour: int) -> datetime:
 
 
 def save_settings(values: dict, now: datetime) -> dict:
+    values = {**values, "public_url": magent_public_url(values.get("public_url", ""))}
     with transaction() as conn:
         old = dict(conn.execute("SELECT * FROM email_recap_settings WHERE id = 1").fetchone())
         changed = any(old[key] != values[key] for key in ("day", "hour", "public_url"))
@@ -174,6 +177,7 @@ def enqueue_test(sub: dict, month: str, request_id: str, public_url: str, now: f
 def enqueue_due(now: datetime) -> int:
     with transaction() as conn:
         config = dict(conn.execute("SELECT * FROM email_recap_settings WHERE id=1").fetchone())
+        config["public_url"] = magent_public_url(config["public_url"])
         if not config["enabled"] or not config["next_send_at"] or config["next_send_at"] > now.timestamp():
             return 0
         # After long downtime, send only the latest due recap; never backfill a pile of old emails.