feat(ITC-WP-0017): establish AgenticDrivesFunctional pattern

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

src/info_tech_canon/generation.py

@@ -48,6 +48,17 @@ RETRIEVAL_ARTIFACT_KINDS = {
 }
 CONSUMER_BRIEF_IDS = ("user-engine", "railiance-fabric", "repo-scoping")
 COMMON_DISTINCTIONS = [
+    {
+        "id": "agentic-fallback-direct-interface",
+        "title": "Agentic fallback vs direct functional interface",
+        "summary": (
+            "Use cross-repository agentic work to interpret novel demand; use an "
+            "owned API, CLI, or MCP surface when the outcome is stable and recurring."
+        ),
+        "source_artifacts": [
+            "practice-pattern/agentic-drives-functional",
+        ],
+    },
     {
         "id": "interface-deprecation-retirement-removal",
         "title": "Interface deprecation vs retirement vs removal",