Add system landscape architecture diagram and documentation

architecture/workspace/system-landscape.puml

@@ -0,0 +1,33 @@
+@startuml
+!include https://raw.githubusercontent.com/plantuml-stdlib/C4-PlantUML/master/C4_Context.puml
+
+LAYOUT_WITH_LEGEND()
+
+title Kell Creations - System Landscape
+
+Person(owner, "Business Owner", "Oversees operations and governance")
+Person(staff, "Operations Staff", "Uses internal business applications")
+
+System_Boundary(kc, "Kell Creations Platform") {
+  System(platform, "Kell Creations Platform", "Unified applications, services, policies, and workflows")
+}
+
+System_Ext(wordpress, "WordPress", "www.kellcreations.com")
+System_Ext(n8n, "n8n", "n8n.kellsupport.com")
+System_Ext(mail, "Mail Server", "mail.kellcreations.com")
+System_Ext(git, "Git Service", "git.kellsupport.com")
+System_Ext(facebook, "Facebook", "@kellcreation")
+System_Ext(instagram, "Instagram", "@kellcreations")
+System_Ext(xsocial, "X", "@kellcreations")
+
+Rel(owner, platform, "Governs and uses")
+Rel(staff, platform, "Uses")
+Rel(platform, wordpress, "Publishes content and syncs data")
+Rel(platform, n8n, "Triggers and receives automations")
+Rel(platform, mail, "Sends notifications and approvals")
+Rel(platform, git, "Stores controlled source and documents")
+Rel(platform, facebook, "Publishes campaigns")
+Rel(platform, instagram, "Publishes campaigns")
+Rel(platform, xsocial, "Publishes campaigns")
+
+@enduml

docs/architecture/system-landscape.md

@@ -1,3 +1,38 @@
 # System Landscape
 
-The Kell Creations platform connects internal applications, shared services, WordPress, mail, social platforms, and automation workflows.
+This diagram shows the Kell Creations platform at the highest level.
+
+It identifies the primary business users, the central Kell Creations platform, and the major external systems it depends on for publishing, automation, communications, and source control.
+
+## Scope
+
+This view is intended to provide a management-level understanding of the platform ecosystem. It is the starting point for more detailed context, container, component, deployment, and workflow diagrams.
+
+## Diagram Source
+
+The source for this diagram is maintained as architecture code in:
+
+`architecture/workspace/system-landscape.puml`
+
+## Included Systems
+
+- Kell Creations Platform
+- WordPress at `www.kellcreations.com`
+- n8n at `n8n.kellsupport.com`
+- Mail services at `mail.kellcreations.com`
+- Git services at `git.kellsupport.com`
+- Facebook `@kellcreation`
+- Instagram `@kellcreations`
+- X `@kellcreations`
+
+## Notes
+
+This landscape view will evolve as the internal applications are broken out into:
+
+- Inventory
+- Social Media Management
+- WordPress Management
+- Craft Manufacturing / MRP
+- Financial Analysis
+- Transaction Database
+- Shared services for authentication, data, API orchestration, and common UI patterns