fix(nvidia): drop retired free endpoints and move the emergency fallback to a live model

.env.example

@@ -1421,7 +1421,7 @@ PROVIDER_LIMITS_SYNC_SPACING_MS=1500
 #OMNIROUTE_LOG_EXPORT_CHILD_MAX_OLD_SPACE_MB=1024
 
 # Emergency budget-exhaustion fallback (set false or 0 to disable the reroute to
-# nvidia/openai/gpt-oss-120b when a request fails with a 402 budget error).
+# nvidia/nvidia/nemotron-3.5-super-vl-120b-a12b when a request fails with a 402 budget error).
 # Used by: open-sse/services/emergencyFallback.ts.  Default: enabled.
 #OMNIROUTE_EMERGENCY_FALLBACK=true
 

README.md

@@ -21,9 +21,9 @@
 
 > **Bring your own provider accounts.** This is an estimated aggregate across separately eligible third-party free tiers, not a token grant from OmniRoute. Sign up, obtain credentials where required, and connect the providers you can use; each provider controls its limits, availability, and terms.
 >
-> Stacking free tiers by hand is painful — dozens of SDKs, dozens of rate limits, and no idea how much you actually have. OmniRoute catalogs **485 free-tier entries across 34 recurring pool keys** and computes the token headline from the **17 pools with a published positive monthly budget plus five per-model Groq caps**, deduplicated by shared pool. Quotas that only open after a regional identity check (today: ModelScope) are shown apart, +~6M behind regional identity verification, and never summed into the headline. The result stays visible on the dashboard (`/dashboard/free-tiers`).
+> Stacking free tiers by hand is painful — dozens of SDKs, dozens of rate limits, and no idea how much you actually have. OmniRoute catalogs **484 free-tier entries across 34 recurring pool keys** and computes the token headline from the **17 pools with a published positive monthly budget plus five per-model Groq caps**, deduplicated by shared pool. Quotas that only open after a regional identity check (today: ModelScope) are shown apart, +~6M behind regional identity verification, and never summed into the headline. The result stays visible on the dashboard (`/dashboard/free-tiers`).
 
-<img src="./docs/diagrams/free-tier-budget.svg" width="100%" alt="OmniRoute free-tier budget card: ~1.62B free tokens per month steady, up to ~2.22B in the first month with signup credits, from 34 documented recurring pool keys covering 485 cataloged free-tier entries behind one endpoint. Honest pool-deduped math — each shared pool counted once, including 17 recurring pools with a published positive monthly token budget plus five per-model Groq caps; 12 providers are marked avoid in the terms-risk catalog so you decide. Budget bar includes Mistral 1B, Nara 210M, LLM7 150M, xKiro 150M, Groq 30M (five per-model caps) and smaller pools, plus first-month signup credits and permanently-free no-token-cap providers surfaced separately so they never inflate the headline. Live used/remaining on /dashboard/free-tiers."/>
+<img src="./docs/diagrams/free-tier-budget.svg" width="100%" alt="OmniRoute free-tier budget card: ~1.62B free tokens per month steady, up to ~2.22B in the first month with signup credits, from 34 documented recurring pool keys covering 484 cataloged free-tier entries behind one endpoint. Honest pool-deduped math — each shared pool counted once, including 17 recurring pools with a published positive monthly token budget plus five per-model Groq caps; 12 providers are marked avoid in the terms-risk catalog so you decide. Budget bar includes Mistral 1B, Nara 210M, LLM7 150M, xKiro 150M, Groq 30M (five per-model caps) and smaller pools, plus first-month signup credits and permanently-free no-token-cap providers surfaced separately so they never inflate the headline. Live used/remaining on /dashboard/free-tiers."/>
 
 > Animated summary of the live `/dashboard/free-tiers` page. Full methodology (pool dedupe, credit tiers, provider terms): **[docs/reference/FREE_TIERS.md](docs/reference/FREE_TIERS.md)**.
 >
@@ -1376,7 +1376,7 @@ Métricas canônicas em 2026-10-18: **1.976 vídeos únicos** · **20.220.289 vi
   <tr><td nowrap><b><a href="docs/architecture/RESILIENCE_GUIDE.md">Resilience Guide</a></b></td><td>Circuit breakers, cooldowns, queue, anti-thundering herd, TLS spoofing</td></tr>
   <tr><td nowrap><b><a href="docs/routing/AUTO-COMBO.md">Auto-Combo Engine</a></b></td><td>16-factor scoring, mode packs, self-healing</td></tr>
   <tr><td nowrap><b><a href="docs/ops/PROXY_GUIDE.md">Proxy Guide</a></b></td><td>3-level proxy system, 1proxy marketplace, registry CRUD</td></tr>
-  <tr><td nowrap><b><a href="docs/reference/FREE_TIERS.md">Free Tiers</a></b></td><td>Consolidated directory: 34 documented recurring pools / 485 cataloged free-tier entries</td></tr>
+  <tr><td nowrap><b><a href="docs/reference/FREE_TIERS.md">Free Tiers</a></b></td><td>Consolidated directory: 34 documented recurring pools / 484 cataloged free-tier entries</td></tr>
   <tr><td nowrap><b><a href="docs/guides/FEATURES.md">Features Gallery</a></b></td><td>Visual dashboard tour with screenshots</td></tr>
   <tr><td nowrap><b><a href="docs/architecture/CODEBASE_DOCUMENTATION.md">Codebase Documentation</a></b></td><td>Beginner-friendly codebase walkthrough</td></tr>
 </table>

changelog.d/fixes/18418-nvidia-retired-free-endpoints.md

@@ -0,0 +1 @@
+- **fix(nvidia):** drop `openai/gpt-oss-120b`, `moonshotai/kimi-k3`, `deepseek-ai/deepseek-v4-pro-0813` and `deepseek-ai/deepseek-v4-flash-0731` from the NVIDIA catalog, because NVIDIA retired their free endpoints and every request now gets a 410 end of life answer. The budget exhaustion emergency fallback, which defaulted to `nvidia` + `openai/gpt-oss-120b` and so always failed, now defaults to `nvidia` + `nvidia/nemotron-3.5-super-vl-120b-a12b`, a model on NVIDIA's free endpoint that OmniRoute already lists as free, with a zero-price row so USD-limited API keys are not failed closed after a fallback ([#18418](https://github.com/diegosouzapw/OmniRoute/issues/18418))