feat(providers): add SumoPod and X5Lab OpenAI-compatible providers (#5963)

* feat(providers): add SumoPod and X5Lab OpenAI-compatible providers

Both are OpenAI-compatible BYOK aggregator gateways, wired via the
default executor with bearer API-key auth. Neither ships a hardcoded
model list — both use passthroughModels with an empty seed list and a
live /v1/models fetcher, so the catalog always reflects what each
gateway actually serves instead of speculative model IDs.

- SumoPod: https://ai.sumopod.com/v1/chat/completions (sk- keys)
- X5Lab: https://api.x5lab.dev/v1/chat/completions (x5- keys)

Regression guard: tests/unit/sumopod-x5lab-provider.test.ts.

Co-authored-by: Rigel Ramadhani Waloni <rigel8911@gmail.com>
Inspired-by: https://github.com/decolua/9router/pull/1288

* chore(changelog): restore release entries + add sumopod/x5lab bullet

* test(golden): regenerate translate-path for sumopod + x5lab providers

* test(providers): bump APIKEY count 164→166 for sumopod + x5lab

---------

Co-authored-by: Rigel Ramadhani Waloni <rigel8911@gmail.com>

src/shared/constants/config.ts

@@ -20,6 +20,8 @@ export const PROVIDER_ENDPOINTS = {
   openadapter: "https://api.openadapter.in/v1/chat/completions",
   dit: "https://api.dit.ai/v1/chat/completions",
   tokenrouter: "https://api.tokenrouter.com/v1/chat/completions",
+  sumopod: "https://ai.sumopod.com/v1/chat/completions",
+  x5lab: "https://api.x5lab.dev/v1/chat/completions",
   openai: "https://api.openai.com/v1/chat/completions",
   anthropic: "https://api.anthropic.com/v1/messages",
   gemini: "https://generativelanguage.googleapis.com/v1beta/models",

src/shared/constants/providers/apikey/gateways.ts

@@ -602,4 +602,32 @@ export const APIKEY_PROVIDERS_GATEWAYS = {
     apiHint:
       "TokenRouter exposes an OpenAI-compatible chat completions endpoint at https://api.tokenrouter.com/v1/chat/completions, plus a working /v1/models catalog. OmniRoute uses the OpenAI protocol.",
   },
+  sumopod: {
+    id: "sumopod",
+    alias: "sumopod",
+    name: "SumoPod",
+    icon: "router",
+    color: "#2563EB",
+    textIcon: "SP",
+    passthroughModels: true,
+    website: "https://ai.sumopod.com",
+    authHint:
+      "Use your SumoPod API key (sk-...) in Authorization: Bearer <key>. Fully OpenAI-compatible. API base URL: https://ai.sumopod.com/v1.",
+    apiHint:
+      "SumoPod exposes an OpenAI-compatible chat completions endpoint at https://ai.sumopod.com/v1/chat/completions, plus a live /v1/models catalog. OmniRoute uses the OpenAI protocol and lists models via passthrough.",
+  },
+  x5lab: {
+    id: "x5lab",
+    alias: "x5lab",
+    name: "X5Lab",
+    icon: "router",
+    color: "#7C3AED",
+    textIcon: "X5",
+    passthroughModels: true,
+    website: "https://x5lab.dev",
+    authHint:
+      "Use your X5Lab API key (x5-...) in Authorization: Bearer <key>. Fully OpenAI-compatible. API base URL: https://api.x5lab.dev/v1.",
+    apiHint:
+      "X5Lab exposes an OpenAI-compatible chat completions endpoint at https://api.x5lab.dev/v1/chat/completions, plus a live /v1/models catalog. OmniRoute uses the OpenAI protocol and lists models via passthrough.",
+  },
 };