feat(comm): implement Communication & Lead Layer core

- Add database migration: contacts, conversations, messages, leads, workflows, follow-ups, audit log
- Contact handler with deduplication and identity resolution
- Conversation handler with unified inbox
- Lead handler with scoring engine and qualification
- Workflow handler with trigger-action engine
- Full API routes for all comm layer endpoints
- 12 operational agents integrated in all BOC modules

backend/main.go

@@ -26,6 +26,7 @@ import (
 	"boc/db"
 	"boc/employee"
 	"boc/handlers"
+	"boc/handlers/comm"
 	"boc/ledger"
 	"boc/middleware"
 	"boc/sms"
@@ -407,6 +408,42 @@ func main() {
 		r.Post("/api/v1/agents/chat", agentOrchestrator.HandleAgentChat)
 		r.Get("/api/v1/agents/{id}", agentOrchestrator.HandleAgentStatus)
 		r.Post("/api/v1/agents/{id}/execute", agentOrchestrator.HandleAgentChat)
+
+		// Communication & Lead Layer
+		contactH := comm.NewContactHandler(database)
+		conversationH := comm.NewConversationHandler(database)
+		leadH := comm.NewLeadHandler(database)
+		workflowH := comm.NewWorkflowHandler(database)
+
+		// Contacts
+		r.Post("/api/v1/comm/contacts", contactH.CreateContact)
+		r.Get("/api/v1/comm/contacts", contactH.ListContacts)
+		r.Get("/api/v1/comm/contacts/{id}", contactH.GetContact)
+		r.Post("/api/v1/comm/contacts/merge", contactH.MergeContacts)
+
+		// Conversations
+		r.Post("/api/v1/comm/conversations", conversationH.CreateConversation)
+		r.Get("/api/v1/comm/conversations", conversationH.ListConversations)
+		r.Get("/api/v1/comm/conversations/{id}", conversationH.GetConversation)
+		r.Post("/api/v1/comm/conversations/{id}/messages", conversationH.SendMessage)
+		r.Put("/api/v1/comm/conversations/{id}/status", conversationH.UpdateStatus)
+
+		// Leads
+		r.Post("/api/v1/comm/leads", leadH.CreateLead)
+		r.Get("/api/v1/comm/leads", leadH.ListLeads)
+		r.Get("/api/v1/comm/leads/{id}", leadH.GetLead)
+		r.Put("/api/v1/comm/leads/{id}", leadH.UpdateLead)
+		r.Put("/api/v1/comm/leads/{id}/qualification", leadH.UpdateQualification)
+		r.Get("/api/v1/comm/leads/{id}/score-history", leadH.GetLeadScoreHistory)
+
+		// Workflows
+		r.Post("/api/v1/comm/workflows", workflowH.CreateWorkflow)
+		r.Get("/api/v1/comm/workflows", workflowH.ListWorkflows)
+		r.Get("/api/v1/comm/workflows/{id}", workflowH.GetWorkflow)
+		r.Put("/api/v1/comm/workflows/{id}", workflowH.UpdateWorkflow)
+		r.Post("/api/v1/comm/workflows/{id}/toggle", workflowH.ToggleWorkflow)
+		r.Post("/api/v1/comm/workflows/{id}/execute", workflowH.ExecuteWorkflow)
+		r.Get("/api/v1/comm/workflows/{id}/executions", workflowH.ListExecutions)
 	})
 
 	// WebSocket (protected)