feat(FN-343): remove lingering iyzico references after Stripe migration (+1 more)

Commits merged:
- chore(FN-343): remove lingering iyzico references from docs, config, and scripts
- feat(FN-343): remove lingering iyzico references after Stripe migration

Files changed:
CLAUDE.md                                    | 10 +++++-----
 README.md                                    |  2 +-
 apps/api/src/database/schema/core.ts         |  1 +
 apps/web/src/messages/en.json                |  1 -
 apps/web/src/messages/tr.json                |  1 -
 apps/web/src/routes/dashboard/billing.tsx    |  6 +++---
 docker-compose.coolify.yml                   |  5 ++---
 docs/INDEX.md                                | 27 ++++++++++++-------------
 knowledge.md                                 | 30 ++++++++++++++--------------
 packages/shared/src/constants/error-codes.ts |  1 -
 packages/shared/src/index.ts                 |  1 -
 packages/shared/src/types/payment.ts         | 12 +----------
 scripts/fn342-pw-verify.mjs                  |  2 +-
 scripts/validate-env.sh                      |  3 +--
 14 files changed, 43 insertions(+), 59 deletions(-)

Fusion-Task-Id: FN-343

apps/web/src/messages/en.json

@@ -361,7 +361,6 @@
       "refunded": "Refunded"
     },
     "methodLabels": {
-      "iyzico": "Credit Card",
       "stripe": "Credit Card",
       "eft": "EFT/Wire"
     }

apps/web/src/messages/tr.json

@@ -361,7 +361,6 @@
       "refunded": "İade"
     },
     "methodLabels": {
-      "iyzico": "Kredi Kartı",
       "stripe": "Kredi Kartı",
       "eft": "EFT/Havale"
     }

apps/web/src/routes/dashboard/billing.tsx

@@ -18,7 +18,7 @@ export const Route = createFileRoute("/dashboard/billing")({
 interface Payment {
   id: string;
   amount: number;
-  method: "iyzico" | "eft";
+  method: "stripe" | "eft";
   status: "completed" | "pending" | "failed" | "refunded";
   planName?: string;
   receiptUrl?: string;
@@ -77,7 +77,7 @@ function BillingPage() {
 
         {/* Method Filter */}
         <div className="flex gap-1">
-          {["all", "iyzico", "eft"].map((method) => (
+          {["all", "stripe", "eft"].map((method) => (
             <Button
               key={method}
               variant={methodFilter === method ? "default" : "outline"}
@@ -149,7 +149,7 @@ function BillingPage() {
 
                   {/* Method */}
                   <div className="text-center">
-                    <Badge variant={payment.method === "iyzico" ? "secondary" : "outline"}>
+                    <Badge variant={payment.method === "stripe" ? "secondary" : "outline"}>
                       {t(`billing.methodLabels.${payment.method}`)}
                     </Badge>
                   </div>