feat(quota): Moonshot Open Platform balance and TPD lock for custom nodes (#12590)

Validado em lote numa worktree combinada com os 9 PRs desta leva sobre o tip de `release/v3.8.51`: `typecheck:core` limpo, `check:provider-consistency` OK (273 entradas REGISTRY, **356** providers canônicos), `check-docs-counts-sync` exit 0 e **300/300** nos testes que a leva toca.

O crescimento de arquivo que os PRs empilham uns sobre os outros foi rebaselinado num único registro datado (`_rebaseline_2026_09_03_houminxi_batch`), com a decomposição por arquivo: `providers/page.tsx` +18 (import CSV do #12504 + busca do #12495 no mesmo painel), `accountFallback.ts` +6 (o #12566 sobre o rebaseline que o #12590 já registrou — os dois tocam `checkFallbackError`) e `chatCore.ts` +3 (invalidez de cache de quota no 429 do #12325). As violações restantes (`codex.ts`, `stream.ts`) foram medidas também no tip puro e são drift da base, não desta leva.

src/shared/utils/classify429.ts

@@ -91,6 +91,14 @@ const QUOTA_PATTERNS: ReadonlyArray<RegExp> = [
   // Trailing punctuation/whitespace before the closing quote is tolerated
   // because real API responses may include a period or trailing space.
   /"error"\s*:\s*"usage limit reached[.\s]*"/i,
+
+  // Moonshot Open Platform organization TPD (tokens-per-day). Live body:
+  // "request reached organization TPD rate limit, current: N, limit: M".
+  // Do not use a bare /TPD/ — too wide. Limit is read from the body, never
+  // hardcoded (Tier0=1.5M, Tier1+=unlimited).
+  /organization TPD rate limit/i,
+  /\bTPD rate limit\b/i,
+  /insufficient balance/i,
 ];
 
 /**
@@ -155,6 +163,9 @@ const TERMINAL_QUOTA_PATTERNS: ReadonlyArray<RegExp> = [
   /individual quota reached/i,
   /enable overages/i,
   /daily free allocation/i,
+  /organization TPD rate limit/i,
+  /\bTPD rate limit\b/i,
+  /insufficient balance/i,
 ];
 
 /**

src/shared/utils/providerQuotaVisibility.ts

@@ -1,13 +1,23 @@
 import { USAGE_SUPPORTED_PROVIDERS } from "@/shared/constants/providers";
+import { isMoonshotOpenPlatformConnection } from "@omniroute/open-sse/services/usage/moonshotOpenPlatform.ts";
 
 export interface ProviderQuotaVisibilityConnection {
   quotaVisible?: boolean;
+  provider?: string;
+  providerSpecificData?: unknown;
 }
 
 export function isProviderQuotaVisible(connection: ProviderQuotaVisibilityConnection): boolean {
   return connection.quotaVisible !== false;
 }
 
-export function supportsProviderQuota(providerId: string): boolean {
-  return USAGE_SUPPORTED_PROVIDERS.includes(providerId);
+export function supportsProviderQuota(
+  providerId: string,
+  connection?: { provider?: string; providerSpecificData?: unknown },
+): boolean {
+  if (USAGE_SUPPORTED_PROVIDERS.includes(providerId)) return true;
+  return isMoonshotOpenPlatformConnection({
+    provider: providerId,
+    providerSpecificData: connection?.providerSpecificData,
+  });
 }