feat(ledger): add bookkeeping workbench and transaction views

- Add transactions_dirty table and zero-tolerance cleansing action

- Implement bookkeeping workbench (/bookkeeping) with searchable Combobox channel selector and card suffix / account identifier

- Implement transaction ledger (/transactions) with date groupings, multi-currency metrics, and filters

- Update AGENTS.md guidelines for Base UI Select and Combobox bindings

components/ui/sheet.tsx

@@ -70,8 +70,7 @@ function SheetContent({
               />
             }
           >
-            <XIcon
-            />
+            <XIcon />
             <span className="sr-only">Close</span>
           </SheetPrimitive.Close>
         )}