State-hub connect and initial workplans

.claude/rules/workplan-convention.md

@@ -0,0 +1,9 @@
+# Workplan Convention
+
+- Workplans live in `workplans/`.
+- Prefix new workplans with `IB-WP-`.
+- Use YAML frontmatter with `id`, `type`, `title`, `domain`, `repo`, `status`,
+  `owner`, `topic_slug`, `created`, and `updated`.
+- Include task blocks with stable IDs, status, priority, and optional State Hub
+  task IDs.
+- Keep workplans tied to this repo's PRD/FRS requirements and State Hub context.