Repo hygiene: fill stack-and-commands, normalize workplan statuses

- Fill .claude/rules/stack-and-commands.md (was an empty TODO template)
- Normalize workplan frontmatter statuses to canonical vocabulary
  (completed/done -> finished) per ADR-001
- Repair glued frontmatter delimiter in NK-WP-0001 (superseded_by line)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

workplans/NK-WP-0001-sso-mfa-platform.md

@@ -9,7 +9,8 @@ topic_slug: netkingdom
 state_hub_workstream_id: 39263c4b-ef70-4053-b782-350834b7e1be
 created: "2026-02-28"
 updated: "2026-03-21"
-superseded_by: NK-WP-0003---
+superseded_by: NK-WP-0003
+---
 
 # SSO & MFA Platform — Keycloak + privacyIDEA on Kubernetes
 

workplans/NK-WP-0002-local-identity.md

@@ -3,7 +3,7 @@ id: NK-WP-0002
 type: workplan
 title: "Local Identity — Bootstrap User Store & Minimal OIDC"
 domain: infotech
-status: completed
+status: finished
 owner: worsch
 topic_slug: netkingdom
 state_hub_workstream_id: 7c9021b1-319c-4b4a-a8be-0642239a1893

workplans/NK-WP-0006-recursive-platform-identity-security-architecture.md

@@ -4,7 +4,7 @@ type: workplan
 title: Recursive platform identity and security architecture
 domain: infotech
 repo: net-kingdom
-status: done
+status: finished
 owner: Bernd Worsch
 topic_slug: netkingdom
 created: 2026-05-17

workplans/NK-WP-0007-object-storage-sts-credential-vending.md

@@ -4,7 +4,7 @@ type: workplan
 title: Object Storage STS Credential Vending
 domain: infotech
 repo: net-kingdom
-status: done
+status: finished
 owner: codex
 topic_slug: netkingdom
 planning_priority: high

workplans/NK-WP-0010-genesis-security-pattern-completion.md

@@ -4,7 +4,7 @@ type: workplan
 title: Genesis Security Pattern Completion
 domain: infotech
 repo: net-kingdom
-status: done
+status: finished
 owner: codex
 topic_slug: netkingdom
 planning_priority: medium