Refactor SQL query for improved date range logic (#68)

- Updated the date range logic in the TARGET_UNITS_QUERY to calculate
the start date of the quarter dynamically, ensuring accurate reporting
for target units.
- Adjusted the `composeWeeklyReportTitle` method to set the period start
based on the current quarter, enhancing the clarity and accuracy of
weekly financial reports.

These changes improve the accuracy of financial data retrieval and
reporting in the application.

Author: anatolyshipitz

workers/main/src/services/TargetUnit/queries.ts

@@ -25,8 +25,15 @@ export const TARGET_UNITS_QUERY = `SELECT
     JOIN users AS u ON u.id = te.user_id
     WHERE g.type = 'Group'
       AND cv.customized_type = 'Principal' and cv.value = ?
-      AND te.spent_on BETWEEN DATE_SUB(CURDATE(), INTERVAL WEEKDAY(CURDATE()) + 7 DAY)
-                          AND DATE_SUB(CURDATE(), INTERVAL WEEKDAY(CURDATE()) + 1 DAY)
+      AND te.spent_on BETWEEN 
+        DATE_FORMAT(
+          DATE_SUB(
+            DATE_SUB(CURDATE(), INTERVAL WEEKDAY(CURDATE()) + 1 DAY),
+            INTERVAL (MONTH(DATE_SUB(CURDATE(), INTERVAL WEEKDAY(CURDATE()) + 1 DAY))-1)%3 MONTH
+          ),
+          '%Y-%m-01'
+        )
+        AND DATE_SUB(CURDATE(), INTERVAL WEEKDAY(CURDATE()) + 1 DAY)
   ) t
   GROUP BY
     group_id,

workers/main/src/services/WeeklyFinancialReport/WeeklyFinancialReportRepository.ts

@@ -151,11 +151,8 @@ export class WeeklyFinancialReportRepository
   }
 
   private composeWeeklyReportTitle(currentDate: Date): string {
-    const periodStart = new Date(
-      currentDate.getFullYear(),
-      currentDate.getMonth(),
-      currentDate.getDate() - ((currentDate.getDay() + 6) % 7) - 7,
-    )
+    const quarter = Math.floor(currentDate.getMonth() / 3);
+    const periodStart = new Date(currentDate.getFullYear(), quarter * 3, 1)
       .toISOString()
       .slice(0, 10);
     const periodEnd = new Date(