docs(seo-dashboard): add recent SEO enhancement coverage from code + docs review

docs-site/docs/features/seo-dashboard/index.md

@@ -343,3 +343,37 @@ After using these guides, you'll be able to:
 **Let's start optimizing! 🚀**
 
 Pick your starting point above and begin your SEO journey.
+
+
+## 📌 Latest Implementation Notes (May 2026)
+
+This section was reviewed against the active codebase and endpoint surface.
+
+- Dashboard routes: `/seo` and `/seo-dashboard`
+- Core UI: `SEODashboard.tsx` with tabbed analysis workflows
+- Extended support for strategic insights history/run, deep competitor analysis, and onboarding task health
+- Operational diagnostics include semantic health, SIF health, and cache stats
+
+
+## 🆕 Recent SEO Enhancements (Reviewed: May 25, 2026)
+
+The SEO stack has expanded beyond core URL analysis. Based on the current frontend/backend code and latest SEO docs, these additions should be considered part of the current docs-site surface:
+
+### Dashboard + API enhancements
+- Strategic insights execution and history (`/api/seo-dashboard/strategic-insights/run`, `/api/seo-dashboard/strategic-insights/history`)
+- Deep competitor analysis endpoint (`/api/seo-dashboard/deep-competitor-analysis`)
+- Onboarding task health visibility (`/api/seo-dashboard/onboarding-task-health`)
+- Operational diagnostics (`/api/seo-dashboard/semantic-health`, `/api/seo-dashboard/sif-health`, `/api/seo-dashboard/cache-stats`)
+- Route aliases active in app routing: `/seo` and `/seo-dashboard`
+
+### Workflow enhancements connected to SEO
+- Blog Writer now includes GSC-powered brainstorming flows (`frontend/src/components/BlogWriter/GSCBrainstormModal.tsx`, `backend/services/gsc_brainstorm_service.py`)
+- SEO guidance is available both in dashboard workflows and in-editor Blog Writer SEO modules (e.g., `SEOMiniPanel`, `SEOAnalysisModal`, `SEOMetadataModal`)
+
+### Source docs reviewed for enhancement tracking
+- `docs/SEO/COMPLETE_SEO_TOOLS_INVENTORY.md`
+- `docs/SEO/API_REFERENCE.md`
+- `docs/SEO/PHASE2A_IMPLEMENTATION.md`
+- `docs/SEO/MIGRATION_STATUS_ANALYSIS.md`
+- `docs/SEO/MIGRATION_DETAILED_GAPS.md`
+- `docs/SEO/MIGRATION_EXECUTIVE_SUMMARY.md`