feat(prices): fiyat kayıtları, birim fiyat motoru ve analizde aylık maliyet

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/shared/schemas/product-price.ts

@@ -0,0 +1,41 @@
+import { z } from "zod";
+import { tr } from "../../i18n/tr";
+import { parseMoney } from "../money";
+
+const v = tr.validation;
+const s = tr.productPrices.validation;
+const ymd = z.string().regex(/^\d{4}-\d{2}-\d{2}$/, v.date);
+const id = (message: string) => z.string().regex(/^[a-f0-9]{24}$/i, message);
+
+/** Elle fiyat girişi (kaynak: manual). Paket fiyatı TL; kampanyada geçerlilik sonu isteğe bağlı. */
+export const productPriceFormSchema = z
+  .object({
+    productId: id(s.product),
+    storeId: id(s.store),
+    date: ymd,
+    price: z
+      .string()
+      .trim()
+      .transform((x, ctx) => {
+        const minor = parseMoney(x);
+        if (minor === null || minor <= 0) {
+          ctx.addIssue({ code: "custom", message: s.price });
+          return z.NEVER;
+        }
+        return minor;
+      }),
+    isPromo: z.boolean(),
+    promoUntil: z.preprocess((x) => (x === "" || x === undefined ? null : x), ymd.nullable()),
+    note: z.string().trim().max(300).default(""),
+  })
+  .superRefine((x, ctx) => {
+    if (x.isPromo && x.promoUntil && x.promoUntil < x.date)
+      ctx.addIssue({ code: "custom", path: ["promoUntil"], message: s.promoUntil });
+  })
+  .transform(({ price, ...x }) => ({
+    ...x,
+    priceMinor: price,
+    promoUntil: x.isPromo ? x.promoUntil : null,
+  }));
+export type ProductPriceFormInput = z.input<typeof productPriceFormSchema>;
+export type ProductPriceForm = z.output<typeof productPriceFormSchema>;