Adopt spec v0.2: schema, semantic validator, operating modes; workplans updated

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

rtut/ui.py

@@ -48,6 +48,9 @@ class App:
             d = p.data
             if not p.ok:
                 rows.append(f"<li class=bad>{e(p.id)}: invalid ({e(p.errors[0])})</li>")
+            elif d.get("spec") != "runbook-pack/v0.1" and d["engine"] == "native":
+                rows.append(f"<li>{e(d['title'])} <span class=pill>{e(d.get('spec'))}</span> "
+                            "<span class=note>cannot be run yet (RBT-WP-0007)</span></li>")
             elif d["engine"] != "native":
                 rows.append(f"<li>{e(d['title'])} <span class=pill>legacy console</span> "
                             f"<span class=note>start with: python -m rtut launch {e(p.path)}</span></li>")