feat(cerebras): add Gemma 4 31B model (#6331)

Add Cerebras Gemma 4 31B model + pricing + catalog test. Integrated into release/v3.8.46.

CHANGELOG.md

@@ -8,6 +8,7 @@
 
 ### ✨ New Features
 
+- **feat(cerebras):** add the **Gemma 4 31B** model (`gemma-4-31b`) to the Cerebras registry + pricing table. Regression guard extends `tests/unit/t28-model-catalog-updates.test.ts`. (thanks @backryun)
 - **feat(providers):** add **Yuanbao (web)** as a cookie-session provider ([#6196](https://github.com/diegosouzapw/OmniRoute/issues/6196)) — `yuanbao-web` (Tencent Yuanbao, `yuanbao.tencent.com`) with cookie-only auth (`hy_user`/`hy_token` + public agent id), SSE→OpenAI translation incl. `reasoning_content`, exposing DeepSeek V3/R1 + Hunyuan / Hunyuan-T1. Regression guard: `tests/unit/providers-yuanbao-web.test.ts`. `together-web` was **deferred** (no verifiable web-session endpoint — needs a captured request) and `huggingchat-web` **dropped** (the existing `huggingchat` already is a web-cookie provider). (thanks @chirag127)
 - **feat(providers):** route the built-in **agentrouter** through the dynamic Claude-Code wire image ([#6056](https://github.com/diegosouzapw/OmniRoute/issues/6056)) — a small static allow-set (`CC_WIRE_IMAGE_BUILTINS` in `open-sse/services/ccWireImageBuiltins.ts`), consulted by `isClaudeCodeCompatible` / `isClaudeCodeCompatibleProvider` / `applyFingerprint`, makes agentrouter adopt the CC wire-image headers + fingerprint **while guarding the CC baseUrl/auth branches** so it keeps its own registry `baseUrl` and `x-api-key` auth. Regression guard: `tests/unit/agentrouter-cc-wire-image.test.ts` (asserts the wire image is applied AND agentrouter's baseUrl/auth are preserved). Live WAF-acceptance against agentrouter.org is a VPS validation follow-up (Hard Rule #18).
 - **feat(providers):** **bulk-add API keys for Cloudflare Workers AI** ([#6174](https://github.com/diegosouzapw/OmniRoute/issues/6174)) — `cloudflare-ai` is removed from the bulk-add exclusion list and the bulk parser gains a 3-field `name|accountId|apiKey` mode; the bulk route now builds a **per-entry** `providerSpecificData` so each key carries its own `accountId` (fixing the previous shared-object reuse), and both the create + key-validation paths receive it. Regression guard: `tests/unit/bulk-api-key-parser-cloudflare.test.ts`. (thanks @muflifadla38)

open-sse/config/providers/registry/cerebras/index.ts

@@ -10,6 +10,7 @@ export const cerebrasProvider: RegistryEntry = {
   authHeader: "bearer",
   models: [
     { id: "zai-glm-4.7", name: "GLM 4.7" },
+    { id: "gemma-4-31b", name: "Gemma 4 31B" },
     { id: "gpt-oss-120b", name: "GPT OSS 120B" },
   ],
 };

src/shared/constants/pricing/inference-hosts.ts

@@ -61,6 +61,7 @@ export const DEFAULT_PRICING_INFERENCE = {
   },
   cerebras: {
     "gpt-oss-120b": { input: 0, output: 0, cached: 0, reasoning: 0, cache_creation: 0 },
+    "gemma-4-31b": { input: 0, output: 0, cached: 0, reasoning: 0, cache_creation: 0 },
     "zai-glm-4.7": { input: 0, output: 0, cached: 0, reasoning: 0, cache_creation: 0 },
     "llama-3.3-70b": { input: 0, output: 0, cached: 0, reasoning: 0, cache_creation: 0 },
     "llama-4-scout-17b-16e-instruct": {

tests/unit/t28-model-catalog-updates.test.ts

@@ -82,6 +82,10 @@ test("T28: volcengine (Ark) catalog includes DeepSeek V4 models", () => {
 });
 
 test("T28: new catalog models resolve through getModelInfoCore", async () => {
+  const cerebrasGemma = await getModelInfoCore("cerebras/gemma-4-31b", {});
+  assert.equal(cerebrasGemma.provider, "cerebras");
+  assert.equal(cerebrasGemma.model, "gemma-4-31b");
+
   const minimax = await getModelInfoCore("minimax/MiniMax-M2.7", {});
   assert.equal(minimax.provider, "minimax");
   assert.equal(minimax.model, "MiniMax-M2.7");