rename: "Team" billing tier to "Family"

All literal "team" tier-value references renamed to "family" across
API routes, admin UI, OpenAPI schemas, and lib/tiers.ts. The DB enum
value itself is renamed in place via ALTER TYPE ... RENAME VALUE
(migration 0044) rather than drizzle-kit's auto-generated
drop-and-recreate-the-enum migration, which would have failed against
any existing row still holding 'team' — RENAME VALUE preserves
existing data with no cast/backfill needed.

Also adds STRIPE_PLAN.md — a full Stripe billing integration plan
(Checkout+Portal, tier→Price mapping, admin billing dashboard, and a
multi-user Family-group design since Family is meant to cover several
accounts under one subscription, not one payer). Planning only, no
Stripe code yet.

v0.47.0

packages/db/src/migrations/0044_polite_living_mummy.sql

@@ -0,0 +1 @@
+ALTER TYPE "public"."tier" RENAME VALUE 'team' TO 'family';

packages/db/src/migrations/meta/_journal.json

@@ -309,6 +309,13 @@
       "when": 1784302338735,
       "tag": "0043_futuristic_shadowcat",
       "breakpoints": true
+    },
+    {
+      "idx": 44,
+      "version": "7",
+      "when": 1784326930573,
+      "tag": "0044_polite_living_mummy",
+      "breakpoints": true
     }
   ]
 }

packages/db/src/schema/users.ts

@@ -10,7 +10,7 @@ import {
 import { relations } from "drizzle-orm";
 
 export const userRoleEnum = pgEnum("user_role", ["user", "moderator", "admin"]);
-export const tierEnum = pgEnum("tier", ["free", "pro", "team"]);
+export const tierEnum = pgEnum("tier", ["free", "pro", "family"]);
 export const unitPrefEnum = pgEnum("unit_pref", ["metric", "imperial"]);
 export const apiKeyScopeEnum = pgEnum("api_key_scope", ["full", "read"]);
 

packages/db/src/seed.ts

@@ -21,9 +21,9 @@ async function seed() {
         maxPublicRecipes: 99999,
       },
       {
-        tier: "team",
+        tier: "family",
         // -1 is the actual "no cap" sentinel (see lib/tiers.ts UNLIMITED) —
-        // pro uses large-but-finite numbers instead; team is genuinely unlimited.
+        // pro uses large-but-finite numbers instead; family is genuinely unlimited.
         maxRecipes: -1,
         aiCallsPerMonth: 2000,
         storageMb: 50000,