feat: restructure sales, add PDF quote generation and WebSocket support

prisma/schema.prisma

@@ -41,8 +41,9 @@ model User {
 
   sessions Session[]
 
-  createdAt DateTime @default(now())
-  updatedAt DateTime @updatedAt
+  createdAt       DateTime          @default(now())
+  updatedAt       DateTime          @updatedAt
+  generatedQuotes GeneratedQuotes[]
 }
 
 model Role {
@@ -130,6 +131,8 @@ model Opportunity {
   name            String
   notes           String?
 
+  generatedQuotes GeneratedQuotes[]
+
   // Stage / status / priority / type / rating stored as JSON references
   // so we don't need separate lookup tables for CW enums
   typeName     String?
@@ -165,6 +168,7 @@ model Opportunity {
 
   // Financials
   totalSalesTax Float @default(0)
+  probability   Float @default(0)
 
   // Location / department
   locationName   String?
@@ -244,3 +248,25 @@ model Credential {
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
 }
+
+model GeneratedQuotes {
+  id String @id @default(uuid())
+
+  quoteRegenData   Json   @default("{}") // Store any additional data needed for quote regeneration, such as product details, pricing, etc.
+  quoteRegenParams Json   @default("{}") // Store parameters used for quote regeneration, such as template ID, formatting options, etc.
+  quoteRegenHash   String @unique @default("")
+
+  downloads Json @default("[]") // Array of download records with timestamp and user info
+
+  quoteFile     Bytes
+  quoteFileName String
+
+  opportunityId String
+  opportunity   Opportunity @relation(fields: [opportunityId], references: [id], onDelete: Cascade)
+
+  createdById String?
+  createdBy   User?   @relation(fields: [createdById], references: [id], onDelete: SetNull)
+
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+}