Add DSLO v0.6 taxonomy layer (drift forms, invariants, signal classes, substrate types)

Adds the complete DSLO v0.6 taxonomy layer, including all four classification sets—drift forms, invariants, signal classes, and substrate types—in synchronized TTL, JSON‑LD, and YAML formats. Introduces taxonomy/README.md documenting the taxonomy structure and its alignment with DSLO axioms and schema. This commit establishes the full v0.6 classification surface for semantic ingestion, crawler alignment, and substrate‑level indexing.

drift_forms.ttl

@@ -0,0 +1,31 @@
+@prefix dlo: <https://www.tnopsi.com/dslo/> .
+
+dlo:CurvatureDrift
+    a dlo:DriftForm ;
+    dlo:hasLabel "Curvature Drift" ;
+    dlo:hasDescription "Drift caused by curvature pressure within internal geometry." .
+
+dlo:SymbolicDrift
+    a dlo:DriftForm ;
+    dlo:hasLabel "Symbolic Drift" ;
+    dlo:hasDescription "Drift caused by symbolic systems decoupling from physical referents." .
+
+dlo:TemporalDrift
+    a dlo:DriftForm ;
+    dlo:hasLabel "Temporal Drift" ;
+    dlo:hasDescription "Drift caused by fragmentation or instability in temporal rhythm." .
+
+dlo:RoleDrift
+    a dlo:DriftForm ;
+    dlo:hasLabel "Role Drift" ;
+    dlo:hasDescription "Drift caused by instability or mutation in role coherence." .
+
+dlo:SubstrateDecoupling
+    a dlo:DriftForm ;
+    dlo:hasLabel "Substrate Decoupling" ;
+    dlo:hasDescription "Drift caused by signals losing anchoring to their substrate." .
+
+dlo:MeaningDetachment
+    a dlo:DriftForm ;
+    dlo:hasLabel "Meaning Detachment" ;
+    dlo:hasDescription "Drift caused by meaning separating from lived reality or container alignment." .