feat: add Google Maps → Email pipeline (Tab 4)

- New Maps page with keyword + region chips, German city presets, query preview, enrichment toggle
- Google Maps Places API (New) service with pagination and deduplication
- maps-enrich job route: Maps search → store raw leads → optional Anymailfinder bulk enrichment
- Settings: Google Maps API key credential card with Places API instructions
- Sidebar: MapPin nav item + googlemaps credential status indicator
- Results: maps job type with MapPin icon (text-green-400)
- Credentials API: added googlemaps to SERVICES array and test endpoint

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

components/layout/Sidebar.tsx

@@ -3,7 +3,7 @@
 import Link from "next/link";
 import { usePathname } from "next/navigation";
 import { cn } from "@/lib/utils";
-import { Building2, Linkedin, Search, BarChart3, Settings, Zap, ChevronLeft, ChevronRight } from "lucide-react";
+import { Building2, Linkedin, Search, BarChart3, Settings, Zap, ChevronLeft, ChevronRight, MapPin } from "lucide-react";
 import { useAppStore } from "@/lib/store";
 import { useEffect, useState } from "react";
 
@@ -11,7 +11,8 @@ const navItems = [
   { href: "/airscale", icon: Building2, label: "AirScale → Email", color: "text-blue-400" },
   { href: "/linkedin", icon: Linkedin, label: "LinkedIn → Email", color: "text-blue-500" },
   { href: "/serp", icon: Search, label: "SERP → Email", color: "text-purple-400" },
-  { href: "/results", icon: BarChart3, label: "Results & History", color: "text-green-400" },
+  { href: "/maps", icon: MapPin, label: "Maps → Email", color: "text-green-400" },
+  { href: "/results", icon: BarChart3, label: "Results & History", color: "text-yellow-400" },
   { href: "/settings", icon: Settings, label: "Settings", color: "text-gray-400" },
 ];
 
@@ -19,12 +20,13 @@ interface CredentialStatus {
   anymailfinder: boolean;
   apify: boolean;
   vayne: boolean;
+  googlemaps: boolean;
 }
 
 export function Sidebar() {
   const pathname = usePathname();
   const { sidebarCollapsed, setSidebarCollapsed } = useAppStore();
-  const [creds, setCreds] = useState<CredentialStatus>({ anymailfinder: false, apify: false, vayne: false });
+  const [creds, setCreds] = useState<CredentialStatus>({ anymailfinder: false, apify: false, vayne: false, googlemaps: false });
 
   useEffect(() => {
     fetch("/api/credentials")
@@ -80,6 +82,7 @@ export function Sidebar() {
             { key: "anymailfinder", label: "Anymailfinder" },
             { key: "apify", label: "Apify" },
             { key: "vayne", label: "Vayne" },
+            { key: "googlemaps", label: "Google Maps" },
           ].map(({ key, label }) => (
             <div key={key} className="flex items-center gap-2">
               <span className={cn("w-2 h-2 rounded-full flex-shrink-0", creds[key as keyof CredentialStatus] ? "bg-green-500" : "bg-red-500")} />

components/layout/TopBar.tsx

@@ -8,6 +8,7 @@ const BREADCRUMBS: Record<string, string> = {
   "/airscale": "AirScale → Email",
   "/linkedin": "LinkedIn → Email",
   "/serp": "SERP → Email",
+  "/maps": "Google Maps → Email",
   "/results": "Results & History",
   "/settings": "Settings",
 };