chore: Standardized the OpenAI icon

[hjlarry]

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Summary

fix #30470

Screenshots

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Checklist

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods

[gemini-code-assist]

Summary of Changes

Hello @hjlarry, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request standardizes the visual representation of OpenAI models within the application by removing multiple color-specific OpenAI icons and their corresponding rendering logic. The change consolidates the display to a single, consistent OpenAI icon, simplifying icon management and ensuring a uniform user experience across different OpenAI model versions. This addresses issue #30470.

Highlights

• Icon Removal: Removed specific colored OpenAI icons (OpenaiBlue, OpenaiTeal, OpenaiViolet) and their associated JSON and TypeScript files from the icon library.
• Icon Import Cleanup: Updated the llm/index.ts file to remove imports for the deprecated OpenAI icons, ensuring a cleaner and more focused icon module.
• Standardized Icon Usage: Modified the model-icon/index.tsx component to remove conditional rendering logic that previously displayed different colored OpenAI icons based on specific model names (e.g., gpt-4.1, gpt-4o, gpt-4), now using a single, standardized OpenAI icon for all.

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[gemini-code-assist]

Code Review

This pull request aims to standardize the OpenAI icon by removing several color variations (Blue, Teal, Violet) and using a single OpenaiYellow icon. The changes involve deleting the corresponding icon JSON and TSX files, and updating the icon index and usage sites. While the cleanup is good, the logic for displaying the standardized icon seems incomplete. The current condition only applies the yellow icon to OpenAI models with names starting with 'o', leaving other models like gpt-4 to use a generic icon. I've suggested a fix to apply the standardized icon to all OpenAI models to fully achieve the goal of this PR.

[Copilot]

Pull request overview

This PR standardizes OpenAI model icons by removing colored variants and simplifying the icon selection logic. Previously, different GPT model families (gpt-4, gpt-4o, gpt-4.1) used different colored OpenAI icons. Now, only models starting with 'o' (like o1, o3-mini) use the OpenaiYellow icon, while other OpenAI models fall back to the standard provider icon.

Key changes:

• Removed model-specific icon logic for GPT-4 variants in favor of a single condition for "o" series models
• Deleted three unused icon components (OpenaiBlue, OpenaiTeal, OpenaiViolet) and their associated files
• Updated icon exports to remove references to deleted components

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
web/app/components/header/account-setting/model-provider-page/model-icon/index.tsx	Simplified icon selection logic by removing conditional checks for gpt-4.1, gpt-4o, and gpt-4 models; retained only the condition for models starting with 'o'
web/app/components/base/icons/src/public/llm/index.ts	Removed exports for OpenaiBlue, OpenaiTeal, and OpenaiViolet icon components
web/app/components/base/icons/src/public/llm/OpenaiViolet.tsx	Deleted violet variant of OpenAI icon component
web/app/components/base/icons/src/public/llm/OpenaiViolet.json	Deleted violet variant icon data file
web/app/components/base/icons/src/public/llm/OpenaiTeal.tsx	Deleted teal variant of OpenAI icon component
web/app/components/base/icons/src/public/llm/OpenaiTeal.json	Deleted teal variant icon data file
web/app/components/base/icons/src/public/llm/OpenaiBlue.tsx	Deleted blue variant of OpenAI icon component
web/app/components/base/icons/src/public/llm/OpenaiBlue.json	Deleted blue variant icon data file

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