feat: update cloud model options

[fengju0213]

Summary

Closes #1583.

Updates the available cloud model set and makes cloud model platform routing explicit.

Changes

• Add cloud model options:
  • gpt-5.5
  • deepseek-v4-pro
  • claude-opus-4-7
• Remove older GPT cloud options from the frontend selector and whitelist:
  • gpt-4.1-mini
  • gpt-4.1
  • gpt-5
  • gpt-5.1
  • gpt-5.2
• Keep GPT cloud routing on azure.
• Route Claude cloud models through aws-bedrock-converse.
• Route DeepSeek V4 Pro through deepseek.
• Route Minimax M2.5 through minimax.
• Replace the cloud model fallback with an explicit model-to-platform map.
• Update default cloud model initialization and related tests to use gpt-5.4.

Validation

• npx vitest run test/unit/store/chatStore.test.ts test/unit/electron/main/domReadyHandlers.test.ts
• npx eslint src/store/authStore.ts src/store/chatStore.ts src/pages/Agents/Models.tsx test/unit/store/chatStore.test.ts --no-warn-ignored
• npm run type-check
• npx prettier --check src/store/chatStore.ts src/i18n/locales/en-us/setting.json

[Wendong-Fan]

pls also update opus 4.7

[fengju0213]

pls also update opus 4.7

added