feat(shared): add connected-providers-cache for model availability (#1121)

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: justsisyphus <justsisyphus@users.noreply.github.com>
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/shared/index.ts

@@ -28,6 +28,7 @@ export * from "./agent-tool-restrictions"
 export * from "./model-requirements"
 export * from "./model-resolver"
 export * from "./model-availability"
+export * from "./connected-providers-cache"
 export * from "./case-insensitive"
 export * from "./session-utils"
 export * from "./tmux"