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/nav-user.tsx

@@ -1,4 +1,4 @@
-"use client";
+"use client"
 
 import {
   ChevronsUpDownIcon,
@@ -6,14 +6,10 @@ import {
   Settings2Icon,
   SparklesIcon,
   UserCogIcon,
-} from "lucide-react";
-import { signOut } from "next-auth/react";
+} from "lucide-react"
+import { signOut } from "next-auth/react"
 
-import {
-  Avatar,
-  AvatarFallback,
-  AvatarImage,
-} from "@/components/ui/avatar";
+import { Avatar, AvatarFallback, AvatarImage } from "@/components/ui/avatar"
 import {
   DropdownMenu,
   DropdownMenuContent,
@@ -22,29 +18,27 @@ import {
   DropdownMenuLabel,
   DropdownMenuSeparator,
   DropdownMenuTrigger,
-} from "@/components/ui/dropdown-menu";
+} from "@/components/ui/dropdown-menu"
 import {
   SidebarMenu,
   SidebarMenuButton,
   SidebarMenuItem,
   useSidebar,
-} from "@/components/ui/sidebar";
+} from "@/components/ui/sidebar"
 
 export interface NavUserData {
-  name: string;
-  email: string;
-  avatar?: string | null;
+  name: string
+  email: string
+  avatar?: string | null
 }
 
 export function NavUser({ user }: { user: NavUserData }) {
-  const { isMobile } = useSidebar();
-  const initials = (user.name || user.email || "U")
-    .slice(0, 2)
-    .toUpperCase();
+  const { isMobile } = useSidebar()
+  const initials = (user.name || user.email || "U").slice(0, 2).toUpperCase()
 
   const handleSignOut = () => {
-    signOut({ callbackUrl: "/login" });
-  };
+    signOut({ callbackUrl: "/login" })
+  }
 
   return (
     <SidebarMenu>
@@ -62,7 +56,7 @@ export function NavUser({ user }: { user: NavUserData }) {
               {user.avatar ? (
                 <AvatarImage src={user.avatar} alt={user.name} />
               ) : null}
-              <AvatarFallback className="rounded-lg font-medium text-xs">
+              <AvatarFallback className="rounded-lg text-xs font-medium">
                 {initials}
               </AvatarFallback>
             </Avatar>
@@ -89,7 +83,7 @@ export function NavUser({ user }: { user: NavUserData }) {
                   {user.avatar ? (
                     <AvatarImage src={user.avatar} alt={user.name} />
                   ) : null}
-                  <AvatarFallback className="rounded-lg font-medium text-xs">
+                  <AvatarFallback className="rounded-lg text-xs font-medium">
                     {initials}
                   </AvatarFallback>
                 </Avatar>
@@ -140,5 +134,5 @@ export function NavUser({ user }: { user: NavUserData }) {
         </DropdownMenu>
       </SidebarMenuItem>
     </SidebarMenu>
-  );
+  )
 }