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+++ b/core/README.md
@@ -1,3 +1,43 @@
+<details>
+<summary><strong>🧭 Lost or curious? Open the WFGY Compass & ⭐ Star Unlocks</strong></summary>
+
+<br>
+
+> 🔴 **YOU ARE HERE → WFGY Core 2.0**  
+> The symbolic reasoning engine — math & logic backbone.
+
+---
+
+### Navigation Map
+*(One place to see everything; links open the relevant section.)*
+
+| Layer | Page | What it’s for |
+|------|------|----------------|
+| 🧠 Core | [WFGY Core 2.0](../core/README.md) | The symbolic reasoning engine (math & logic) — **🔴 YOU ARE HERE 🔴** |
+| 🧠 Core | [WFGY 1.0 Home](https://github.com/onestardao/WFGY/) | The original homepage for WFGY 1.0 |
+| 🗺️ Map | **[Problem Map 1.0](../ProblemMap/README.md)** | 16 failure modes + fixes |
+| 🗺️ Map | [Problem Map 2.0](../ProblemMap/rag-architecture-and-recovery.md) | RAG-focused recovery pipeline |
+| 🗺️ Map | [Semantic Clinic](../ProblemMap/SemanticClinicIndex.md) | Symptom → family → exact fix |
+| 🧓 Map | [Grandma Clinic](../ProblemMap/GrandmaClinic.md) | Plain-language stories, mapped to PM 1.0 |
+| 🏡 Onboarding | [Starter Village](../StarterVillage/README.md) | Guided tour for newcomers |
+| 🧰 App | [TXT OS](../OS/README.md) | .txt semantic OS — 60-second boot |
+| 🧰 App | [Blah Blah Blah](../OS/BlahBlahBlah/README.md) | Abstract/paradox Q&A (built on TXT OS) |
+| 🧰 App | [Blur Blur Blur](../OS/BlurBlurBlur/README.md) | Text-to-image with semantic control |
+| 🧰 App | [Blow Blow Blow](../OS/BlowBlowBlow/README.md) | Reasoning game engine & memory demo |
+| 🧪 Research | [Semantic Blueprint](../SemanticBlueprint/README.md) | Modular layer structures (future) |
+| 🧪 Research | [Benchmarks](../benchmarks/benchmark-vs-gpt5/README.md) | Comparisons & how to reproduce |
+| 🧪 Research | [Value Manifest](../value_manifest/README.md) | Why this engine creates $-scale value |
+
+---
+
+> ### ⭐ Star Unlocks
+> - **1,000 ⭐ → Blur Blur Blur unlocked** ✅  
+> - **3,000 ⭐ → Blow Blow Blow unlocked** ⏳  
+
+---
+
+</details>
+
 # ⭐ WFGY 2.0 ⭐ 7-Step Reasoning Core Engine is now live
 ## ✨One man, One life, One line — my lifetime’s work. Let the results speak for themselves✨