Update 20.37_thought_router_tr_specification.md

Author: CuriousOne23

thought_simulator/requirements_20/20.37_thought_router_tr_specification.md

@@ -103,13 +103,14 @@ TR SHALL NOT execute when `tr_needs_update = false`.
 ### **HLR‑20.37‑011 — TP‑Local Inputs Only**  
 TR SHALL derive routing‑vector fields only from:
 
-- TP.semantic meaning‑layer fields  
-- TP.semantic meaning‑semantics[]  
+- TP.semantic meaning-layer fields  
+- TP.semantic meaning-semantics[]  
 - TP.semantic idob_semantics[]  
+- TP.idob (read-only, when present)  
 - TP.process.routing_metadata  
 - TP.semantic.lineage  
 - structural cues from STPX  
-- permitted ephemeral DCB events  
+- permitted ephemeral DCB events
 
 ### **HLR‑20.37‑048 — Ephemeral DCB Events**  
 TR MAY consume ephemeral DCB directional‑change events.
@@ -129,9 +130,17 @@ TR SHALL NOT depend on hidden mutable global state.
 ### **HLR‑20.37‑034 — No Cross‑TP Coupling**  
 TR SHALL NOT depend on other TPs except through canonical lineage fields.
 
-### **HLR‑20.37‑0XX — Residue‑Topology Prohibition** 
-TR SHALL NOT consume semantic‑residue topology fields (TP.metadata.semantic_residue, TP.semantic.importance, residue clusters, residue drift, residue curvature).
-These fields are owned by IdOB and RB.
+### **HLR-20.37-071**
+TR SHALL treat committed `TP.idob` as a read-only meaning-layer input when present, in addition to `TP.semantic.idob_semantics[]`. TR SHALL NOT write `TP.idob`.
+
+### **HLR-20.37-072**
+When `TP.idob` is absent, TR SHALL still complete. Missing IdOB fields SHALL NOT block TR and SHALL NOT be invented.
+
+### **HLR-20.37-073**
+TR SHALL NOT load dictionaries, emit `pack_ids[]`, or derive pack keys from `stance`, affect, or register-like TR fields.
+
+### **HLR-20.37-074**
+TR SHALL NOT consume semantic-residue topology fields (`TP.metadata.semantic_residue`, residue clusters, residue drift, residue curvature). Those fields remain owned by IdOB and RB.
 
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