feat: product enrichment observability, lab KB study, benchmark, copy + local-Hub E2E, docs; 1.3.0

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

central/app/web.py

@@ -22,6 +22,7 @@ from .panel_presentation import format_ui_datetime
 from .models import AdminUser, Agent, AgentEnrollment, AgentRelease, AgentSnapshot, BlockedProduct, FiscalContextEntry, Installation, Job, ProductEnrichment, ProductFieldAudit, RtcCandidate, RtcWriteAudit, Tenant
 from .jobs import create_job
 from .audit import record_audit
+from .enrichment.observability import coverage_metrics, official_sources, provider_sources
 
 
 def router(session_factory):
@@ -160,7 +161,7 @@ def router(session_factory):
     def dashboard(request: Request):
         session, auth_data, redirect = page_auth(request)
         if redirect: return redirect
-        try: return render(request, "dashboard.html", {"summary": dashboard_summary(session), "auth": auth_data})
+        try: return render(request, "dashboard.html", {"summary": dashboard_summary(session), "auth": auth_data, "sources": provider_sources(session), "official": official_sources(session), "enrich_metrics": coverage_metrics(session)})
         finally: session.close()
 
     @routes.get("/agents", response_class=HTMLResponse)