feat(raporlar): harcama kırılımı uç noktası ve dönem istatistiklerinde birikim oranı verileri

- GET /reports/breakdown: grup, tüm kategoriler, ödeme türü ve ay kırılımı; dönem/tarih/grup/kategori/ödeme türü filtreleri
- /stats/periods: gelir, sabit gider, devirler, gerçekleşen birikim
- Faz 9 planı kullanıcı kararlarıyla güncellendi (ekstre içe aktarma, JSON geri dönüş noktası, aylık rapor)

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

frontend/src/types/PeriodStat.ts

@@ -6,11 +6,15 @@ export type PeriodStat = { id: string, name: string, start_date: string,
 /**
  * Son gün, dahil
  */
-last_date: string, status: PeriodStatus, spendable: number, spent: number, 
+last_date: string, status: PeriodStatus, income_total: number, fixed_expense_total: number, savings_goal: number, carryover_debt: number, carryover_surplus: number, spendable: number, spent: number, 
 /**
  * Harcanan, gruplara göre
  */
 spent_by_group: GroupAmounts, 
+/**
+ * Gelir − sabit − borç + artı − harcanan (negatifse açık). Birikim oranı = bu ÷ gelir
+ */
+realized_savings: number, 
 /**
  * Kapanmamışsa `null`
  */

frontend/src/types/ReportBreakdown.ts

@@ -0,0 +1,27 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+import type { ReportCategoryRow } from "./ReportCategoryRow";
+import type { ReportGroupRow } from "./ReportGroupRow";
+import type { ReportMethodRow } from "./ReportMethodRow";
+import type { ReportMonthRow } from "./ReportMonthRow";
+
+export type ReportBreakdown = { 
+/**
+ * Kuruş
+ */
+total: number, count: number, 
+/**
+ * 4 grup, sabit sırada
+ */
+groups: Array<ReportGroupRow>, 
+/**
+ * Harcama olan **tüm** kategoriler, çoktan aza
+ */
+categories: Array<ReportCategoryRow>, 
+/**
+ * Ödeme türleri; `null` = girilmemiş
+ */
+payment_methods: Array<ReportMethodRow>, 
+/**
+ * Aylar (`"YYYY-MM"`), eskiden yeniye
+ */
+months: Array<ReportMonthRow>, };

frontend/src/types/ReportCategoryRow.ts

@@ -0,0 +1,4 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+import type { Group } from "./Group";
+
+export type ReportCategoryRow = { category_id: string, group: Group, total: number, count: number, };

frontend/src/types/ReportGroupRow.ts

@@ -0,0 +1,4 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+import type { Group } from "./Group";
+
+export type ReportGroupRow = { group: Group, total: number, count: number, };

frontend/src/types/ReportMethodRow.ts

@@ -0,0 +1,3 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+export type ReportMethodRow = { payment_method_id: string | null, total: number, count: number, };

frontend/src/types/ReportMonthRow.ts

@@ -0,0 +1,7 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+export type ReportMonthRow = { 
+/**
+ * `"YYYY-MM"`
+ */
+month: string, total: number, count: number, };