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/auth-choice-options.ts

@@ -1,35 +1,13 @@
 import type { AuthProfileStore } from "../agents/auth-profiles.js";
-import type { AuthChoice } from "./onboard-types.js";
+import type { AuthChoice, AuthChoiceGroupId } from "./onboard-types.js";
+
+export type { AuthChoiceGroupId };
 
 export type AuthChoiceOption = {
   value: AuthChoice;
   label: string;
   hint?: string;
 };
-
-export type AuthChoiceGroupId =
-  | "openai"
-  | "anthropic"
-  | "vllm"
-  | "google"
-  | "copilot"
-  | "openrouter"
-  | "litellm"
-  | "ai-gateway"
-  | "cloudflare-ai-gateway"
-  | "moonshot"
-  | "zai"
-  | "xiaomi"
-  | "opencode-zen"
-  | "minimax"
-  | "synthetic"
-  | "venice"
-  | "qwen"
-  | "together"
-  | "qianfan"
-  | "xai"
-  | "custom";
-
 export type AuthChoiceGroup = {
   value: AuthChoiceGroupId;
   label: string;
@@ -145,6 +123,12 @@ const AUTH_CHOICE_GROUP_DEFS: {
     hint: "API key",
     choices: ["together-api-key"],
   },
+  {
+    value: "huggingface",
+    label: "Hugging Face",
+    hint: "Inference API (HF token)",
+    choices: ["huggingface-api-key"],
+  },
   {
     value: "venice",
     label: "Venice AI",
@@ -238,6 +222,11 @@ export function buildAuthChoiceOptions(params: {
     label: "Together AI API key",
     hint: "Access to Llama, DeepSeek, Qwen, and more open models",
   });
+  options.push({
+    value: "huggingface-api-key",
+    label: "Hugging Face API key (HF token)",
+    hint: "Inference Providers — OpenAI-compatible chat",
+  });
   options.push({
     value: "github-copilot",
     label: "GitHub Copilot (GitHub device login)",