Merge branch 'massive-email-notification' into master

# Conflicts:
#	.env.example
#	apps/api/src/app.module.ts

apps/api/src/auth/abilities.ts

@@ -39,7 +39,8 @@ export type Ability =
   | "statement:review"
   | "lookup:manage"
   | "user:manage"
-  | "db:manage";
+  | "db:manage"
+  | "notification:send";
 
 /** Minimum role required for each ability. */
 export const ABILITY_MIN: Record<Ability, Role> = {
@@ -73,6 +74,11 @@ export const ABILITY_MIN: Record<Ability, Role> = {
   "lookup:manage": "MANAGER",
   "user:manage": "ADMIN",
   "db:manage": "ADMIN",
+  // Mass email notifications — fires mail to customers on the office's
+  // behalf, with no per-row review. Same trust tier as `renewal:send`:
+  // a STAFF user typing one customer receipt is fine; a STAFF user firing
+  // 260 mail merges on the customer base is not.
+  "notification:send": "MANAGER",
 };
 
 export const ALL_ABILITIES = Object.keys(ABILITY_MIN) as Ability[];