feat(providers): add xKiro (#12648)

* test(catalog): pin the 2026-09-02 free-tier re-audit facts for gemini, ollama-cloud, groq, nara and mistral

* feat(providers): add xKiro (5M tokens/day free plan, 39 pinned free models)

* fix(catalog): re-audit gemini, ollama-cloud, groq, nara and mistral against official pages

* docs(providers): xKiro in the provider reference, counts and free-tier headline (~1.66B)

* fix(catalog): restore the console-verified Mistral 1B pool and harden its regression test

* docs(free-tiers): move headline to the re-audited ~1.50B and refresh pool counts

* chore(free-tiers): retire stale Groq free-tier text and preset model; fix catalog header

* docs(providers): align the remaining visible provider/executor counts with the catalog

* docs(providers): align remaining free-tier count chips and metadata

* docs(free-tiers): state the evidence-comment rule honestly and retire the last "14.4K RPD" Groq texts

* docs(free-tiers): retire the stale Gemini onboarding quota text

* docs(free-tier): refresh catalog-entry counts to 442 after base sync

* docs(providers): re-sync provider and free-tier counts after merging release/v3.8.51

* docs(providers): re-sync residual counts after the base merge

* docs(free-tiers): restore README spacing lost in the merge and re-sync the guide counts

* docs(free-tiers): re-sync numbers after merging release/v3.8.51 (Cerebras reclassified upstream)

* fix(docs): keep the NaraRouter plans endpoint out of the API-path checker; rebaseline gateways.ts (+3)

* chore(quality): rebaseline gateways.ts file-size cap for the xKiro entry (+20)

---------

Co-authored-by: diegosouzapw <diegosouzapw@users.noreply.github.com>

src/shared/constants/providers.ts

@@ -102,6 +102,7 @@ export const AGGREGATOR_PROVIDER_IDS = new Set([
   "laozhang",
   "vercel-ai-gateway",
   "unorouter",
+  "xkiro",
   "agentrouter",
   "thebai",
   "fenayai",

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

@@ -1376,6 +1376,24 @@ export const APIKEY_PROVIDERS_GATEWAYS = {
     apiHint:
       "OpenAI-compatible endpoint at https://router.bynara.id/v1. Free-tier models are pinned; others need credit.",
   },
+  xkiro: {
+    id: "xkiro",
+    serviceKinds: ["llm"],
+    alias: "xkiro",
+    name: "xKiro",
+    icon: "hub",
+    color: "#0EA5E9",
+    textIcon: "XK",
+    passthroughModels: true,
+    website: "https://xkiro.com",
+    hasFree: true,
+    freeNote:
+      "Free plan: 5M tokens/day per account across 40 upstream free models — 39 pinned here (Qwen, MiniMax, DeepSeek, Mistral, SenseNova) — no card; past the daily allowance free requests get a 429 until the reset. RPM not published.",
+    authHint:
+      "Create a free account at xkiro.com and paste the key here (Bearer; x-api-key also accepted).",
+    apiHint:
+      "OpenAI-compatible endpoint at https://api.xkiro.com/v1. Public /v1/models tags free rows with access_tier=free; paid models are rejected on the free plan.",
+  },
   regolo: {
     id: "regolo",
     serviceKinds: ["llm"],