UI improvements: Leadspeicher, Maps enrichment, exports

- Rename LeadVault → Leadspeicher throughout (sidebar, topbar, page)
- SidePanel: full lead detail view with contact, source, tags (read-only), Google Maps link for address
- Tags: kontaktiert stored as tag (toggleable), favorit tag toggle
- Remove Status column, StatusBadge dropdown, Priority feature
- Remove Aktualisieren button from Leadspeicher
- Bulk actions: remove status dropdown
- Export: LeadVault Excel-only, clean columns, freeze row + autofilter
- Export dropdown: click-based (fix overflow-hidden clipping)
- ExportButtons: remove CSV, Excel only everywhere
- Maps page: post-search Anymailfinder enrichment button
- ProgressCard: "Suche läuft..." instead of "Warte auf Anymailfinder-Server..."
- Quick SERP renamed to "Schnell neue Suche"
- Results page: Excel export, always-enabled download button
- Anymailfinder: fix bulk field names, array-of-arrays format
- Apify: fix countryCode lowercase
- API: sourceTerm search, contacted/favorite tag filters

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

app/api/jobs/linkedin-enrich/route.ts

@@ -110,7 +110,6 @@ async function runLinkedInEnrich(
               where: { id: result.id },
               data: {
                 email: email || null,
-                confidence: isValid ? 1.0 : emailStatus === "risky" ? 0.5 : 0,
                 contactName: row["person_full_name"] || row["Full Name"] || result.contactName || null,
                 contactTitle: row["person_job_title"] || row["Job Title"] || result.contactTitle || null,
               },
@@ -135,7 +134,6 @@ async function runLinkedInEnrich(
           where: { id: r.id },
           data: {
             email: found.email || null,
-            confidence: isValid ? 1.0 : found.email_status === "risky" ? 0.5 : 0,
             contactName: found.person_full_name || r.contactName || null,
             contactTitle: found.person_job_title || r.contactTitle || null,
           },
@@ -162,7 +160,6 @@ async function runLinkedInEnrich(
         contactTitle: r.contactTitle,
         email: r.email,
         linkedinUrl: r.linkedinUrl,
-        emailConfidence: r.confidence,
       })),
       "linkedin",
       undefined,