move pi-mono into companion-cloud as apps/companion-os

- Copy all pi-mono source into apps/companion-os/
- Update Dockerfile to COPY pre-built binary instead of downloading from GitHub Releases
- Update deploy-staging.yml to build pi from source (bun compile) before Docker build
- Add apps/companion-os/** to path triggers
- No more cross-repo dispatch needed

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/ai/src/index.ts

@@ -0,0 +1,32 @@
+export type { Static, TSchema } from "@sinclair/typebox";
+export { Type } from "@sinclair/typebox";
+
+export * from "./api-registry.js";
+export * from "./env-api-keys.js";
+export * from "./models.js";
+export * from "./providers/anthropic.js";
+export * from "./providers/azure-openai-responses.js";
+export * from "./providers/google.js";
+export * from "./providers/google-gemini-cli.js";
+export * from "./providers/google-vertex.js";
+export * from "./providers/mistral.js";
+export * from "./providers/openai-completions.js";
+export * from "./providers/openai-responses.js";
+export * from "./providers/register-builtins.js";
+export * from "./stream.js";
+export * from "./types.js";
+export * from "./utils/event-stream.js";
+export * from "./utils/json-parse.js";
+export type {
+  OAuthAuthInfo,
+  OAuthCredentials,
+  OAuthLoginCallbacks,
+  OAuthPrompt,
+  OAuthProvider,
+  OAuthProviderId,
+  OAuthProviderInfo,
+  OAuthProviderInterface,
+} from "./utils/oauth/types.js";
+export * from "./utils/overflow.js";
+export * from "./utils/typebox-helpers.js";
+export * from "./utils/validation.js";