feat: add AI Digital Employee agent orchestrator with pipeline tracking

- New AgentPipeline model with JSONB pipeline_data for stages/leads/summary
- AgentOrchestrator service chains DiscoveryService search→analyze→outreach→auto-save
- 3 new API endpoints: POST /agent/start, GET /agent/pipelines, GET /agent/{id}
- Full Agent dashboard Vue component with stats, pipeline grid, leads table, outreach preview
- Sidebar redesigned with AI Agent as primary entry point
- Updated PROGRESS.md, AGENTS.md, DATABASE_SCHEMA.md with latest state

backend/app/main.py

@@ -129,7 +129,7 @@ async def health():
     return {"status": "ok", "app": settings.APP_NAME, "version": "1.0.0"}
 
 
-from app.api.v1 import auth, marketing, translate, customer, quotation, whatsapp, product, exchange, push, admin, analytics, teams, onboarding, notification, feedback, payment, interaction, silent_pattern, training, followup, ai_assistant, discovery, discovery_record, certification, invoice, usage, referral, admin_search, search, admin_ai, credits, admin_credits
+from app.api.v1 import auth, marketing, translate, customer, quotation, whatsapp, product, exchange, push, admin, analytics, teams, onboarding, notification, feedback, payment, interaction, silent_pattern, training, followup, ai_assistant, discovery, discovery_record, certification, invoice, usage, referral, admin_search, search, admin_ai, credits, admin_credits, agent
 
 app.include_router(auth.router, prefix="/api/v1/auth", tags=["auth"])
 app.include_router(marketing.router, prefix="/api/v1/marketing", tags=["marketing"])
@@ -164,6 +164,7 @@ app.include_router(admin_ai.router, prefix="/api/v1/admin", tags=["admin"])
 app.include_router(admin_credits.router, prefix="/api/v1/admin", tags=["admin"])
 app.include_router(credits.router, prefix="/api/v1/credits", tags=["credits"])
 app.include_router(search.router, prefix="/api/v1/search", tags=["search"])
+app.include_router(agent.router, prefix="/api/v1/agent", tags=["agent"])
 
 
 if __name__ == "__main__":