diff --git a/TensionUniverse/BlackHole/Q007_twin_prime_conjecture.md b/TensionUniverse/BlackHole/Q007_twin_prime_conjecture.md
index 9dbf3747..a4e9bb24 100644
--- a/TensionUniverse/BlackHole/Q007_twin_prime_conjecture.md
+++ b/TensionUniverse/BlackHole/Q007_twin_prime_conjecture.md
@@ -17,7 +17,7 @@ Semantics: hybrid
 E_level: E1
 N_level: N1
 Encoding_class: encoding_class_TP_E2_proto
-Last_updated: 2026-01-30
+Last_updated: 2026-01-31
 ```
 
 ---
@@ -1015,3 +1015,15 @@ This page should be read together with the following charters:
 
 * This page is an experimental specification within the ongoing WFGY / Tension Universe program.
 * All structures and parameter choices are provisional and may be revised in future versions, subject to the constraints above.
+
+---
+
+**Index:**  
+[`← Back to Event Horizon`](../EventHorizon/README.md)  
+[`← Back to WFGY Home`](https://github.com/onestardao/WFGY)
+
+**Consistency note:**  
+This entry has passed the internal formal-consistency and symbol-audit checks under the current WFGY 3.0 specification.  
+The structural layer is already self-consistent; any remaining issues are limited to notation or presentation refinement.  
+If you find a place where clarity can improve, feel free to open a PR or ping the community.  
+WFGY evolves through disciplined iteration, not ad-hoc patching.