diff --git a/apps/api/drizzle/0038_founder_id_text.sql b/apps/api/drizzle/0038_founder_id_text.sql
new file mode 100644
index 0000000..8ebd164
--- /dev/null
+++ b/apps/api/drizzle/0038_founder_id_text.sql
@@ -0,0 +1,7 @@
+-- Süper Panel admin aksiyonları founderId olarak panelin Better Auth
+-- kullanıcı ID'sini (32 karakter nanoid, ör. d17M1M3S6c…) gönderiyor; uuid
+-- kolonlar bunu reddedip suspend/ban'ı ve readonly impersonation'ı 500 ile
+-- düşürüyordu ("invalid input syntax for type uuid"). İki alan da FK'sız salt
+-- audit → text. Mevcut UUID değerleri USING ile aynen korunur.
+ALTER TABLE "users" ALTER COLUMN "status_changed_by" TYPE text USING "status_changed_by"::text;
+ALTER TABLE "sessions" ALTER COLUMN "impersonated_by" TYPE text USING "impersonated_by"::text;
diff --git a/apps/api/drizzle/meta/_journal.json b/apps/api/drizzle/meta/_journal.json
index 9b53e4a..1e50163 100644
--- a/apps/api/drizzle/meta/_journal.json
+++ b/apps/api/drizzle/meta/_journal.json
@@ -267,6 +267,13 @@
       "when": 1790332800000,
       "tag": "0037_rpartstore_decodes",
       "breakpoints": true
+    },
+    {
+      "idx": 38,
+      "version": "7",
+      "when": 1790415663270,
+      "tag": "0038_founder_id_text",
+      "breakpoints": true
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/apps/api/src/database/schema/core.ts b/apps/api/src/database/schema/core.ts
index 0c6409d..d6f8b0b 100644
--- a/apps/api/src/database/schema/core.ts
+++ b/apps/api/src/database/schema/core.ts
@@ -32,7 +32,9 @@ export const users = pgTable(
     status: varchar("status", { length: 20 }).default("active").notNull(),
     statusReason: text("status_reason"),
     statusChangedAt: timestamp("status_changed_at", { withTimezone: true }),
-    statusChangedBy: uuid("status_changed_by"),
+    // Süper Panel founder ID'si (Better Auth nanoid) — sase users.id UUID'si
+    // DEĞİL, o yüzden text. FK yok; salt audit alanı.
+    statusChangedBy: text("status_changed_by"),
     referralCode: varchar("referral_code", { length: 20 }),
     referredBy: uuid("referred_by"),
     // Reward days earned via referrals that couldn't be applied to a live
@@ -68,7 +70,8 @@ export const sessions = pgTable(
     // Süper Panel impersonation: when set, this session was created by the
     // founder via /internal/admin/users/:id/impersonate-readonly.
     // ImpersonationReadonlyGuard enforces the readonly contract.
-    impersonatedBy: uuid("impersonated_by"),
+    // Süper Panel founder ID'si (Better Auth nanoid), sase users.id değil → text.
+    impersonatedBy: text("impersonated_by"),
     impersonationReadonly: boolean("impersonation_readonly").default(false).notNull(),
     createdAt: timestamp("created_at", { withTimezone: true }).defaultNow().notNull(),
     updatedAt: timestamp("updated_at", { withTimezone: true }).defaultNow().notNull(),