Add runbook pack spec, validator, legacy launcher, and workplans RBT-WP-0002..0006

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

Assistant: claude-code
Assistant-Model: sonnet
Assistant-Process: 295952@bnt-lap001
Assistant-Session: e93f64ad-516c-46eb-9666-aad8d300c477

registry/capabilities/capability.infotech.runbook-tutorials.md

@@ -0,0 +1,17 @@
+---
+id: capability.infotech.runbook-tutorials
+name: Runbook-tutorial engine
+summary: Pack specification, validator and launcher for guided, parameterized operator runbooks; packs live in the repos that own the procedure.
+owner: runbook-tutorials
+status: draft
+domain: infotech
+tags:
+  - runbook
+  - tutorial
+  - operator
+  - guided
+---
+
+Draft. Specification `runbook-pack/v0.1`, validator and legacy launcher exist; run
+state, evidence and UI are planned (RBT-WP-0003, RBT-WP-0004). Maturity vector to be
+assessed after the spec is frozen (RBT-WP-0002-T04).