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

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

infospace/schemas/practice-pattern.schema.yaml

@@ -0,0 +1,54 @@
+$schema: https://json-schema.org/draft/2020-12/schema
+$id: https://info-tech-canon.local/schemas/practice-pattern.schema.yaml
+title: InfoTechCanon PracticePattern frontmatter
+type: object
+required:
+  - id
+  - title
+  - type
+  - scheme
+  - status
+  - version
+  - summary
+properties:
+  id:
+    type: string
+    pattern: ^practice-pattern/[a-z0-9]+(?:-[a-z0-9]+)*$
+  title:
+    type: string
+    pattern: ^[A-Z][A-Za-z0-9]*$
+  type:
+    const: practice-pattern
+  scheme:
+    const: practice-pattern/0.1
+  status:
+    enum:
+      - draft
+      - candidate
+      - active
+      - deprecated
+      - retired
+  version:
+    type: string
+    pattern: ^[0-9]+\.[0-9]+(?:\.[0-9]+)?$
+  summary:
+    type: string
+    minLength: 1
+  aliases:
+    type: array
+    items:
+      type: string
+  uses:
+    type: array
+    items:
+      type: string
+  related_patterns:
+    type: array
+    items:
+      type: string
+      pattern: ^practice-pattern/
+  known_uses:
+    type: array
+    items:
+      type: string
+additionalProperties: true