feat: add Moonshot AI (Kimi) provider and update xAI Grok models (#1953)

- Add comprehensive Moonshot AI provider with 11 models including:
  * Legacy moonshot-v1 series (8k, 32k, 128k context)
  * Latest Kimi K2 models (K2 Preview, Turbo, Thinking)
  * Vision-enabled models for multimodal capabilities
  * Auto-selecting model variants

- Update xAI provider with latest Grok models:
  * Add Grok 4 (256K context) and Grok 4 (07-09) variant
  * Add Grok 3 Mini Beta and Mini Fast Beta variants
  * Update context limits to match actual model capabilities
  * Remove outdated grok-beta and grok-2-1212 models

- Add MOONSHOT_API_KEY to environment configuration
- Register Moonshot provider in service status monitoring
- Full OpenAI-compatible API integration via api.moonshot.ai
- Fix TypeScript errors in GitHub provider

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-authored-by: Claude <noreply@anthropic.com>

app/components/@settings/tabs/providers/cloud/CloudProvidersTab.tsx

@@ -8,7 +8,7 @@ import { motion } from 'framer-motion';
 import { classNames } from '~/utils/classNames';
 import { toast } from 'react-toastify';
 import { providerBaseUrlEnvKeys } from '~/utils/constants';
-import { SiAmazon, SiGoogle, SiHuggingface, SiPerplexity, SiOpenai } from 'react-icons/si';
+import { SiAmazon, SiGoogle, SiGithub, SiHuggingface, SiPerplexity, SiOpenai } from 'react-icons/si';
 import { BsRobot, BsCloud } from 'react-icons/bs';
 import { TbBrain, TbCloudComputing } from 'react-icons/tb';
 import { BiCodeBlock, BiChip } from 'react-icons/bi';
@@ -21,6 +21,7 @@ type ProviderName =
   | 'Anthropic'
   | 'Cohere'
   | 'Deepseek'
+  | 'Github'
   | 'Google'
   | 'Groq'
   | 'HuggingFace'
@@ -38,6 +39,7 @@ const PROVIDER_ICONS: Record<ProviderName, IconType> = {
   Anthropic: FaBrain,
   Cohere: BiChip,
   Deepseek: BiCodeBlock,
+  Github: SiGithub,
   Google: SiGoogle,
   Groq: BsCloud,
   HuggingFace: SiHuggingface,
@@ -53,6 +55,7 @@ const PROVIDER_ICONS: Record<ProviderName, IconType> = {
 // Update PROVIDER_DESCRIPTIONS to use the same type
 const PROVIDER_DESCRIPTIONS: Partial<Record<ProviderName, string>> = {
   Anthropic: 'Access Claude and other Anthropic models',
+  Github: 'Use OpenAI models hosted through GitHub infrastructure',
   OpenAI: 'Use GPT-4, GPT-3.5, and other OpenAI models',
 };