feat(providers): add 5 free-tier providers (ainative, aion, sealion, routeway, nara) (#7887)

Five OpenAI-compatible free-tier aggregators OmniRoute did not cover yet, added
as a registry entry plus a canonical provider each.

  ainative  api.ainative.studio/api/v1  — 84-model public catalog, passthrough
  aion      api.aionlabs.ai/v1          — 5 models, public catalog w/ pricing
  sealion   api.sea-lion.ai/v1          — AI Singapore, pinned models (10 RPM)
  routeway  api.routeway.ai/v1          — 236-model catalog; browser UA pinned
                                          because Cloudflare 1010s non-browser UAs
  nara      router.bynara.id/v1         — shared 5M/day pool, pinned free models

All five /models endpoints were probed live 2026-07-20 (200 for the public ones;
sealion/nara 401 without a key, as expected) and every pinned model id was
confirmed to exist upstream.

Free-catalog honesty: ainative ("~10M tok/mo claimed"), aion (20k tok/day),
sealion (10 RPM) and routeway (200 RPD) have no verifiable monthly TOKEN quota,
so they are recurring-uncapped — real access, never summed into the headline.
Only nara publishes a token figure (5M tokens/day shared = 150M/month), recorded
as one deduped pool. Net: 484 -> 514 models, 1.376B -> 1.526B tokens, the +150M
coming solely from nara.

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

@@ -732,4 +732,64 @@ export const APIKEY_PROVIDERS_GATEWAYS = {
       "OpenAI-compatible endpoint at https://api.navy/v1 with a live /v1/models catalog that exposes " +
       "per-model token_multiplier and premium flags. Upstream requires an explicit User-Agent header.",
   },
+  ainative: {
+    id: "ainative",
+    alias: "ainative",
+    name: "AINative Studio",
+    icon: "hub",
+    color: "#7C3AED",
+    textIcon: "AN",
+    passthroughModels: true,
+    website: "https://ainative.studio",
+    hasFree: true,
+    freeNote: "Free tier ~10M tokens/month (claimed) across Qwen3, Llama 4, DeepSeek R1 and more.",
+    authHint: "Create a free API key at ainative.studio (no card), then paste it here as a Bearer token.",
+    apiHint:
+      "OpenAI-compatible endpoint at https://api.ainative.studio/api/v1 with a public /models catalog (84 models). OmniRoute lists models via passthrough.",
+  },
+  aion: {
+    id: "aion",
+    alias: "aion",
+    name: "Aion Labs",
+    icon: "hub",
+    color: "#0EA5E9",
+    textIcon: "AI",
+    passthroughModels: true,
+    website: "https://www.aionlabs.ai",
+    hasFree: true,
+    freeNote: "Free tier ~20k tokens/day across the Aion reasoning models.",
+    authHint: "Create a free API key at aionlabs.ai (no card), then paste it here as a Bearer token.",
+    apiHint:
+      "OpenAI-compatible endpoint at https://api.aionlabs.ai/v1 with a public /models catalog carrying context and pricing.",
+  },
+  routeway: {
+    id: "routeway",
+    alias: "routeway",
+    name: "Routeway",
+    icon: "hub",
+    color: "#F59E0B",
+    textIcon: "RW",
+    passthroughModels: true,
+    website: "https://routeway.ai",
+    hasFree: true,
+    freeNote: "Free models (:free suffix) at ~5 RPM / 200 RPD across Llama, Nemotron, Step and Laguna.",
+    authHint: "Create a free API key at routeway.ai, then paste it here as a Bearer token.",
+    apiHint:
+      "OpenAI-compatible endpoint at https://api.routeway.ai/v1 with a public /models catalog (236 models). Cloudflare fronts the API and requires a browser-style User-Agent.",
+  },
+  nara: {
+    id: "nara",
+    alias: "nara",
+    name: "NaraRouter",
+    icon: "hub",
+    color: "#EC4899",
+    textIcon: "NA",
+    passthroughModels: true,
+    website: "https://bynara.id",
+    hasFree: true,
+    freeNote: "Free tier is a shared 5M tokens/day pool; some models are gated behind credit/plan.",
+    authHint: "Get a free API key via NaraRouter's Telegram channel, then paste it here as a Bearer token.",
+    apiHint:
+      "OpenAI-compatible endpoint at https://router.bynara.id/v1. Free-tier models are pinned; others need credit.",
+  },
 };

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

@@ -388,4 +388,16 @@ export const APIKEY_PROVIDERS_REGIONAL = {
     freeNote: "Permanently free API - no credit card required.",
     authHint: "Get API key at agnes-ai.com",
   },
+  sealion: {
+    id: "sealion",
+    alias: "sealion",
+    name: "SEA-LION",
+    icon: "public",
+    color: "#0D9488",
+    textIcon: "SL",
+    website: "https://sea-lion.ai",
+    hasFree: true,
+    freeNote: "Permanently free at 10 RPM — AI Singapore's Southeast-Asian models (Llama/Qwen/Gemma SEA-LION).",
+    authHint: "Sign in at sea-lion.ai with Google (no card, no region wall), create an API key, then paste it here.",
+  },
 };