feat: اصلاح سند payment corrections + audit-log & daily P&L views

Backend:
- POST /orders/{id}/payments/corrections (Manager/Owner): void wrong
  payments (marked Refunded, never deleted) and/or record replacements
  atomically; mandatory reason; requires an open register shift; full
  before/after written to the immutable audit trail.
- GET /orders/closed?date= — closed orders of one Iran-calendar day,
  paged, the browsing surface for corrections.
- CalculateExpectedCash now subtracts cash refunds so corrections keep
  the drawer expectation honest.

Dashboard (reports screen now has three tabs):
- عملکرد و سود: existing KPIs/charts + new day-by-day breakdown table
  (orders, revenue, expenses, net profit per Jalali day).
- اصلاح سند: closed-orders browser with payment chips + correction
  dialog (void checkboxes, replacement rows, live balance, reason).
- گزارش عملیات: filterable audit-log viewer (category, Jalali range,
  branch) with expandable structured details.

fa/en/ar translations included. 86 backend tests pass; dashboard tsc clean.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

web/dashboard/messages/en.json

@@ -557,7 +557,80 @@
     "csvNetIncome": "Net income",
     "csvVoids": "Voids",
     "csvVoidAmount": "Void amount",
-    "csvExpenses": "Expenses"
+    "csvExpenses": "Expenses",
+    "tabs": {
+      "performance": "Performance & profit",
+      "corrections": "Payment corrections",
+      "auditLog": "Activity log"
+    },
+    "dailyBreakdownTitle": "Daily breakdown — sales, expenses & profit",
+    "colDate": "Date",
+    "colOrders": "Orders",
+    "colExpenses": "Expenses",
+    "colNet": "Net profit",
+    "corrections": {
+      "date": "Date",
+      "branch": "Branch",
+      "allBranches": "All branches",
+      "hint": "Find the order with the wrongly-recorded payment and hit “Correct”.",
+      "loadFailed": "Failed to load orders.",
+      "retry": "Retry",
+      "empty": "No closed orders on this day.",
+      "colOrder": "Order",
+      "colTime": "Time",
+      "colStatus": "Status",
+      "colTotal": "Total",
+      "colPayments": "Payments",
+      "table": "Table",
+      "statusPaid": "Settled",
+      "statusCancelled": "Cancelled",
+      "correctAction": "Correct",
+      "prevPage": "Previous",
+      "nextPage": "Next",
+      "dialogTitle": "Payment correction",
+      "orderTotal": "Order total",
+      "voidSection": "Wrong payments (select to void)",
+      "replacementSection": "Replacement payments",
+      "addReplacement": "Add",
+      "noReplacements": "Leave empty if you are only voiding.",
+      "method": "Method",
+      "amount": "Amount",
+      "removeReplacement": "Remove row",
+      "reason": "Reason (required)",
+      "reasonPlaceholder": "e.g. recorded as cash by mistake, was paid by card",
+      "paidAfter": "Paid total after correction",
+      "shortBy": "Short of order total by",
+      "overBy": "Over order total by",
+      "cancel": "Cancel",
+      "submit": "Submit correction",
+      "saved": "Correction recorded.",
+      "saveFailed": "Failed to record correction."
+    },
+    "auditLog": {
+      "category": "Category",
+      "allCategories": "All",
+      "categories": {
+        "Payment": "Payment",
+        "Order": "Order",
+        "Register": "Register",
+        "Staff": "Staff"
+      },
+      "fromDate": "From",
+      "toDate": "To",
+      "branch": "Branch",
+      "allBranches": "All branches",
+      "loadFailed": "Failed to load the activity log.",
+      "retry": "Retry",
+      "empty": "Nothing recorded.",
+      "colTime": "Time",
+      "colCategory": "Category",
+      "colActor": "User",
+      "colSummary": "Summary",
+      "details": "Details",
+      "systemActor": "System",
+      "prevPage": "Previous",
+      "nextPage": "Next"
+    }
   },
   "shifts": {
     "title": "Cash shift",