docs(providers): add Providers v2 guide

Signed-off-by: John Myers <9696606+johntmyers@users.noreply.github.com>

Author: johntmyers

docs/sandboxes/inference-routing.mdx

@@ -5,7 +5,7 @@ title: "Inference Routing"
 sidebar-title: "Inference Routing"
 description: "Understand and configure OpenShell inference routing through inference.local and external endpoints."
 keywords: "Generative AI, Cybersecurity, Inference Routing, Configuration, Privacy, LLM, Provider"
-position: 5
+position: 6
 ---
 
 OpenShell handles inference traffic through two paths: external endpoints and `inference.local`.

docs/sandboxes/policies.mdx

@@ -5,7 +5,7 @@ title: "Customize Sandbox Policies"
 sidebar-title: "Policies"
 description: "Apply, iterate, and debug sandbox network policies with hot-reload on running OpenShell sandboxes."
 keywords: "Generative AI, Cybersecurity, Policy, Network Policy, Sandbox, Security, Hot Reload"
-position: 4
+position: 5
 ---
 
 Use this page to apply and iterate policy changes on running sandboxes. For a full field-by-field YAML definition, use the [Policy Schema Reference](/reference/policy-schema).