feat: Add comprehensive documentation for internal Fidelity apps and tools, enhancing navigation and context within the workspace

vault/03-context/systems/vault-preprod.md

@@ -0,0 +1,41 @@
+---
+type: system
+project: fidelity
+status: active
+systems: []
+workstreams: []
+people: []
+related:
+  - vault
+tags:
+  - system
+  - fidelity
+updated: 2026-04-17
+aliases:
+  - Vault preprod
+---
+
+# Vault Preprod
+
+## Role
+
+- Pre-production variant of the internal Fidelity Vault app/tool.
+
+---
+
+## Stable Patterns
+
+- Keep this separate from production Vault context when documenting behavior.
+- Base note only; add environment-specific usage gradually.
+
+---
+
+## Risks
+
+- Easy to mix up with production Vault or with this workspace's own `vault/` directory.
+
+---
+
+## Related Context
+
+- `vault.md`