feat(provider): add Mistral support

[zerob13]

Summary

• Add built-in Mistral provider with the official v1 base URL and Mistral links
• Register Mistral through the existing OpenAI-compatible AI SDK runtime and provider DB metadata
• Wire Mistral deeplink/custom type support, provider DB UI hints, and official rainbow icon asset
• Add SDD docs and targeted main/renderer coverage

Tests

• pnpm run format
• pnpm run i18n
• pnpm run lint
• pnpm run typecheck
• pnpm exec vitest --config vitest.config.ts --project main test/main/presenter/configPresenter/defaultProviders.test.ts test/main/presenter/llmProviderPresenter/mistralProvider.test.ts test/main/shared/providerDbCatalog.test.ts test/main/providerDeeplink.test.ts --run
• pnpm exec vitest --config vitest.config.ts --project renderer test/renderer/components/ModelIcon.test.ts --run

Closes #1593

Summary by CodeRabbit

• New Features

  • Added Mistral as a built-in AI provider with default API configuration
  • Mistral is now selectable in custom provider settings
  • Deeplink support enabled for Mistral provider installation
  • Added Mistral model icon display

• Documentation

  • Added Mistral provider feature documentation including plan, specification, and task checklist

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 62cb5dd1-1909-48a5-af50-4031252277b5

📥 Commits

Reviewing files that changed from the base of the PR and between b483bf2 and 70b9a81.

⛔ Files ignored due to path filters (1)

• src/renderer/src/assets/llm-icons/mistral-color.svg is excluded by !**/*.svg

📒 Files selected for processing (16)

• docs/features/mistral-provider-support/plan.md
• docs/features/mistral-provider-support/spec.md
• docs/features/mistral-provider-support/tasks.md
• src/main/presenter/configPresenter/providers.ts
• src/main/presenter/llmProviderPresenter/providerRegistry.ts
• src/main/presenter/llmProviderPresenter/providers/aiSdkProvider.ts
• src/renderer/settings/components/AddCustomProviderDialog.vue
• src/renderer/src/components/icons/ModelIcon.vue
• src/shared/providerDbCatalog.ts
• src/shared/providerDeeplink.ts
• test/main/presenter/configPresenter/defaultProviders.test.ts
• test/main/presenter/llmProviderPresenter/mistralProvider.test.ts
• test/main/providerDeeplink.test.ts
• test/main/shared/providerDbCatalog.test.ts
• test/manual/deeplink-playground.html
• test/renderer/components/ModelIcon.test.ts

---

📝 Walkthrough

Walkthrough

This PR adds Mistral AI as a built-in provider to DeepChat. The implementation registers Mistral with OpenAI-compatible API configuration, provider-DB model sourcing, text-generation verification, and UI integration for both built-in and custom provider installation modes.

Changes

Mistral Provider Implementation

Layer / File(s)	Summary
Feature Documentation docs/features/mistral-provider-support/*	Specification, plan, and task checklist documenting Mistral provider support scope, acceptance criteria, and completed work items.
Provider Configuration src/main/presenter/configPresenter/providers.ts	DEFAULT_PROVIDERS adds active Mistral entry with apiType: 'mistral', base URL https://api.mistral.ai/v1, and official/docs/API-key URLs; removes previously commented-out Mistral block.
AI SDK Provider Registry src/main/presenter/llmProviderPresenter/providerRegistry.ts	PROVIDER_ID_REGISTRY defines Mistral with provider-DB model source (mistral/default), generate-text verification, and api-key credentials; PROVIDER_API_TYPE_REGISTRY maps apiType: mistral to registry entry.
Provider DB & Deeplink Support src/shared/providerDbCatalog.ts, src/shared/providerDeeplink.ts	Provider-DB allowlist recognizes mistral; SUPPORTED_PROVIDER_INSTALL_CUSTOM_TYPES includes mistral for deeplink-based custom provider installation.
Model Resolution src/main/presenter/llmProviderPresenter/providers/aiSdkProvider.ts	mapProviderDbModels() uses definition.providerDbSourceId (falling back to provider.id) for model metadata lookup, supporting both built-in and custom Mistral providers.
UI Integration src/renderer/src/components/icons/ModelIcon.vue, src/renderer/settings/components/AddCustomProviderDialog.vue	ModelIcon imports and registers mistralColorIcon asset; AddCustomProviderDialog enables Mistral as selectable API type option.
Configuration Tests test/main/presenter/configPresenter/defaultProviders.test.ts	Validates DEFAULT_PROVIDERS contains Mistral entry with correct id, apiType, baseUrl, disabled state, and nested website URLs.
AI SDK Provider Tests test/main/presenter/llmProviderPresenter/mistralProvider.test.ts	Comprehensive test suite: verifies resolveAiSdkProviderDefinition maps by id and apiType; fetchModels() transforms provider-DB metadata (vision, function-calling, reasoning, token limits); custom providers preserve custom id; check() validates API key presence and triggers generate-text with expected parameters.
Deeplink & Catalog Tests test/main/providerDeeplink.test.ts, test/main/shared/providerDbCatalog.test.ts	isProviderInstallCustomType('mistral') returns true; isProviderDbBackedProvider('mistral') returns true (case-insensitive).
Component & Manual Tests test/renderer/components/ModelIcon.test.ts, test/manual/deeplink-playground.html	ModelIcon test verifies Mistral model ID resolves to correct icon; deeplink playground includes Mistral in built-in and custom provider example grids.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Possibly related PRs

• ThinkInAIXYZ/deepchat#1481: Implements support for a new AI provider using the same code paths (DEFAULT_PROVIDERS, providerRegistry, aiSdkProvider, ModelIcon).
• ThinkInAIXYZ/deepchat#1485: Modifies DEFAULT_PROVIDERS and SUPPORTED_PROVIDER_INSTALL_CUSTOM_TYPES for built-in/custom provider list changes.
• ThinkInAIXYZ/deepchat#1432: Implements provider-DB catalog and DB-backed model sync/refresh machinery used by this PR's provider-DB integration.

Suggested labels

codex

🐰 A new Mistral lights the path so bright,
OpenAI-compatible, verified by sight,
Models from metadata, icons in place,
Custom or built-in, at any base. ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: adding Mistral provider support to the application.
Linked Issues check	✅ Passed	All objectives from issue #1593 are met: Mistral is added as a built-in provider, uses OpenAI-compatible API with correct base URL and auth, appears in provider dropdown, supports standard Mistral models, and resolves verification issues.
Out of Scope Changes check	✅ Passed	All changes directly support Mistral provider implementation: configuration, runtime registration, UI wiring, deeplink support, icon assets, and targeted test coverage. No unrelated modifications detected.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/issue-1593

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[sabitvw-code]

Thank you @zerob13 for implementing this so quickly! We submitted the feature request just yesterday and you already have it merged. Amazing turnaround time.

Mistral AI is becoming a key part of our AI stack and having native support in DeepChat means a lot to our workflow. Looking forward to the next release!

Greetings from Bosnia 🇧🇦