feat(panel): günlük harcama ve dönem istatistikleri uç noktaları

- GET /periods/{id}/daily: dönemin her günü için 4 grubun harcaması
- GET /stats/periods: son dönemlerin harcanabilir/harcanan tutarı + toplam birikim
- Faz 7 adım planı

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

frontend/src/types/DaySpent.ts

@@ -0,0 +1,12 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+import type { GroupAmounts } from "./GroupAmounts";
+
+export type DaySpent = { 
+/**
+ * `"YYYY-MM-DD"`
+ */
+date: string, 
+/**
+ * O gün gruplara göre harcanan (kuruş)
+ */
+spent: GroupAmounts, };

frontend/src/types/PeriodStat.ts

@@ -0,0 +1,12 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+import type { PeriodStatus } from "./PeriodStatus";
+
+export type PeriodStat = { id: string, name: string, start_date: string, 
+/**
+ * Son gün, dahil
+ */
+last_date: string, status: PeriodStatus, spendable: number, spent: number, 
+/**
+ * Kapanmamışsa `null`
+ */
+to_savings: number | null, };

frontend/src/types/PeriodStats.ts

@@ -0,0 +1,12 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+import type { PeriodStat } from "./PeriodStat";
+
+export type PeriodStats = { 
+/**
+ * Kapanışlarda birikime aktarılanların toplamı (kuruş)
+ */
+total_saved: number, 
+/**
+ * Eskiden yeniye
+ */
+periods: Array<PeriodStat>, };