feat(ITC-WP-0016): establish PracticePattern language

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a025c2-407a-7a32-b40a-f37a52f03f62

infospace/indexes/import-matrix.yaml

@@ -43,6 +43,7 @@ artifacts:
 - model/security
 - model/task
 - pattern/intent-scope-purposes
+- practice-pattern/interface-deprecation-strangler
 - practice/intake-and-assimilation
 - profile/small-saas
 - review-kit/alignment
@@ -51,6 +52,7 @@ artifacts:
 - review-kit/alignment/scorecard
 - review-kit/alignment/workflow
 - review-kit/alignment/workplan-template
+- scheme/practice-pattern
 - small-saas/control/namespace-per-tenant
 - small-saas/dataset/subscription-ledger
 - small-saas/deployment/production
@@ -496,6 +498,16 @@ rows:
     - implements
     model/task:
     - uses
+- artifact: practice-pattern/interface-deprecation-strangler
+  targets:
+    model/devsecops:
+    - uses
+    model/governance:
+    - uses
+    model/observability:
+    - uses
+    scheme/practice-pattern:
+    - conforms_to
 - artifact: practice/intake-and-assimilation
   targets:
     kernel/itc-core:
@@ -610,6 +622,10 @@ rows:
     - uses
     review-kit/alignment:
     - part_of
+- artifact: scheme/practice-pattern
+  targets:
+    kernel/itc-core:
+    - conforms_to
 - artifact: small-saas/control/namespace-per-tenant
   targets:
     model/security: