Feat rebrand armature (#43)

Co-authored-by: Jeffrey Smith <jasafpro@gmail.com>
Co-committed-by: Jeffrey Smith <jasafpro@gmail.com>

README.md

@@ -1,11 +1,11 @@
-# Switchboard Core
+# Armature
 
 A self-hosted extension platform. Identity, teams, permissions, workflows,
 and a package system. Everything else ships as installable extensions.
 
 ## What This Is
 
-Switchboard Core is the kernel. It provides the primitives that extensions
+Armature is the kernel. It provides the primitives that extensions
 build on: users, teams, groups, scoped credentials, a Starlark sandbox,
 workflow orchestration, notifications, and a package installer. It does not
 include AI chat, providers, personas, or any domain-specific features —
@@ -27,7 +27,7 @@ docker compose up --build
 # → http://localhost:3000  (admin/admin)
 
 # Or from source
-git clone <repo-url> && cd switchboard-core
+git clone <repo-url> && cd armature
 cp server/.env.example server/.env  # edit DB credentials
 cd server && go run .
 # → http://localhost:8080