feat: add "This year" period option to reports and dashboard

Adds a "year" period (Jan 1 to today) between "6 months" and "12 months"
in the period selector across all reports and dashboard views.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Added
 - Dynamic Report: fields can now be used in multiple zones simultaneously (rows + filters, columns + filters)
 - Dynamic Report: right-click on a filter value to exclude it (shown with strikethrough in red)
+- "This year" period option in reports and dashboard (Jan 1 to today)
 
 ## [0.3.9]
 

src/components/dashboard/PeriodSelector.tsx

@@ -3,7 +3,7 @@ import { useTranslation } from "react-i18next";
 import { Calendar } from "lucide-react";
 import type { DashboardPeriod } from "../../shared/types";
 
-const PERIODS: DashboardPeriod[] = ["month", "3months", "6months", "12months", "all"];
+const PERIODS: DashboardPeriod[] = ["month", "3months", "6months", "year", "12months", "all"];
 
 interface PeriodSelectorProps {
   value: DashboardPeriod;

src/hooks/useDashboard.ts

@@ -102,6 +102,9 @@ function computeDateRange(
     case "6months":
       from = new Date(year, month - 5, 1);
       break;
+    case "year":
+      from = new Date(year, 0, 1);
+      break;
     case "12months":
       from = new Date(year, month - 11, 1);
       break;

src/hooks/useReports.ts

@@ -124,6 +124,9 @@ function computeDateRange(
     case "6months":
       from = new Date(year, month - 5, 1);
       break;
+    case "year":
+      from = new Date(year, 0, 1);
+      break;
     case "12months":
       from = new Date(year, month - 11, 1);
       break;

src/pages/DashboardPage.tsx

@@ -30,6 +30,7 @@ function computeDateRange(
     case "month": from = new Date(year, month, 1); break;
     case "3months": from = new Date(year, month - 2, 1); break;
     case "6months": from = new Date(year, month - 5, 1); break;
+    case "year": from = new Date(year, 0, 1); break;
     case "12months": from = new Date(year, month - 11, 1); break;
     default: from = new Date(year, month, 1); break;
   }

src/pages/ReportsPage.tsx

@@ -33,6 +33,7 @@ function computeDateRange(
     case "month": from = new Date(year, month, 1); break;
     case "3months": from = new Date(year, month - 2, 1); break;
     case "6months": from = new Date(year, month - 5, 1); break;
+    case "year": from = new Date(year, 0, 1); break;
     case "12months": from = new Date(year, month - 11, 1); break;
     default: from = new Date(year, month, 1); break;
   }

src/shared/types/index.ts

@@ -247,7 +247,7 @@ export interface ImportReport {
 
 // --- Dashboard Types ---
 
-export type DashboardPeriod = "month" | "3months" | "6months" | "12months" | "all" | "custom";
+export type DashboardPeriod = "month" | "3months" | "6months" | "year" | "12months" | "all" | "custom";
 
 export interface DashboardSummary {
   totalCount: number;