mein-solar: full feature set

- Schema: companyType, topics, salesScore, salesReason, offerPackage, approved, approvedAt, SearchHistory table
- /api/search-history: GET (by mode) + POST (save query)
- /api/ai-search: stadtwerke/industrie/custom prompts with history dedup
- /api/enrich-leads: website scraping + GPT-4o-mini enrichment (fire-and-forget after each job)
- /api/generate-email: personalized outreach via GPT-4o
- Suche page: 3 mode tabs (Stadtwerke/Industrie/Freie Suche), Alle-Bundesländer queue button, AiSearchModal gets searchMode + history
- Leadspeicher: Bewertung dots column, Paket badge column, Freigeben toggle button, email generator in SidePanel, approved-only export option
- Leads API: approvedOnly + companyType filters, new fields in PATCH

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

prisma/schema.prisma

@@ -75,6 +75,14 @@ model Lead {
   industry        String?
   description     String?
 
+  companyType     String?
+  topics          String?
+  salesScore      Int?
+  salesReason     String?
+  offerPackage    String?
+  approved        Boolean   @default(false)
+  approvedAt      DateTime?
+
   capturedAt      DateTime  @default(now())
   contactedAt     DateTime?
   updatedAt       DateTime  @updatedAt
@@ -86,6 +94,19 @@ model Lead {
   @@index([sourceTab])
   @@index([capturedAt])
   @@index([email])
+  @@index([approved])
+  @@index([companyType])
+}
+
+model SearchHistory {
+  id          String   @id @default(cuid())
+  query       String
+  region      String
+  searchMode  String
+  executedAt  DateTime @default(now())
+
+  @@index([searchMode])
+  @@index([executedAt])
 }
 
 model LeadEvent {