chore(rename): railiance-bootstrap → railiance-cluster

Update all operational references to reflect the new repo name per
ADR-003 (OAS S2 Cluster Runtime). Historical text in docs preserved.
Gitea remote URL updated locally (Gitea repo rename is a manual step).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

workplans/RAIL-BS-WP-0001-dependency-management.md

@@ -3,7 +3,7 @@ id: RAIL-BS-WP-0001
 type: workplan
 title: "Dependency Management — Add lockfile for Ansible control-node deps"
 domain: railiance
-repo: railiance-bootstrap
+repo: railiance-cluster
 status: completed
 owner: railiance
 topic_slug: railiance

workplans/RAIL-BS-WP-0002-k3s-baseline.md

@@ -3,7 +3,7 @@ id: RAIL-BS-WP-0002
 type: workplan
 title: "k3s and Kubernetes Platform Baseline"
 domain: railiance
-repo: railiance-bootstrap
+repo: railiance-cluster
 status: active
 owner: railiance
 topic_slug: railiance