feat(agents) : Hugging Face Inference provider first-class support and Together API fix and Direct Injection Refactor Auths [AI-assisted] (#13472)

* initial commit

* removes assesment from docs

* resolves automated review comments

* resolves lint , type , tests , refactors , and submits

* solves : why do we have to lint the tests xD

* adds greptile fixes

* solves a type error

* solves a ci error

* refactors auths

* solves a failing test after i pulled from main lol

* solves a failing test after i pulled from main lol

* resolves token naming issue to comply with better practices when using hf / huggingface

* fixes curly lints !

* fixes failing tests for google api from main

* solve merge conflicts

* solve failing tests with a defensive check 'undefined' openrouterapi key

* fix: preserve Hugging Face auth-choice intent and token behavior (#13472) (thanks @Josephrp)

* test: resolve auth-choice cherry-pick conflict cleanup (#13472)

---------

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: Peter Steinberger <steipete@gmail.com>

src/commands/onboard-types.ts

@@ -22,6 +22,7 @@ export type AuthChoice =
   | "synthetic-api-key"
   | "venice-api-key"
   | "together-api-key"
+  | "huggingface-api-key"
   | "codex-cli"
   | "apiKey"
   | "gemini-api-key"
@@ -52,6 +53,7 @@ export type AuthChoiceGroupId =
   | "google"
   | "copilot"
   | "openrouter"
+  | "litellm"
   | "ai-gateway"
   | "cloudflare-ai-gateway"
   | "moonshot"
@@ -62,6 +64,8 @@ export type AuthChoiceGroupId =
   | "synthetic"
   | "venice"
   | "qwen"
+  | "together"
+  | "huggingface"
   | "qianfan"
   | "xai"
   | "custom";
@@ -109,6 +113,7 @@ export type OnboardOptions = {
   syntheticApiKey?: string;
   veniceApiKey?: string;
   togetherApiKey?: string;
+  huggingfaceApiKey?: string;
   opencodeZenApiKey?: string;
   xaiApiKey?: string;
   qianfanApiKey?: string;