Improve image loading performance and refresh homepage hero

[AlexanderJ-Carter]

Summary

• add a client-side image enhancement utility to default to async decoding, lazy loading, and fetch priority for the first cover image
• introduce a homepage welcome panel with calls-to-action and focus cards to guide readers到归档、作品集与联系入口
• publish a new article《静态博客性能优化实战：五个提速技巧》，补充生活化的日常维护节奏，并更新首页/归档/分类列表
• add project README 和 MIT License 说明，便于本地预览与分发

Testing

• Not run (not requested)

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Codex Task

[Copilot]

Pull request overview

This PR enhances blog performance through client-side image optimization, refreshes the homepage with a new welcome panel featuring call-to-action buttons and feature cards, publishes a new article about static blog performance optimization, and adds project documentation (README and LICENSE).

Key Changes:

• Client-side image loading optimization with async decoding, lazy loading, and fetch priority for hero images
• New homepage welcome panel with structured navigation and content highlights
• Publication of "静态博客性能优化实战：五个提速技巧" article
• Addition of README.md and MIT LICENSE files

Reviewed changes

Copilot reviewed 55 out of 55 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
js/main.js	Adds enhanceImagePerformance() function that applies async decoding, lazy loading, and fetch priority to images
css/custom-theme.css	Defines comprehensive styling for the new homepage welcome panel with responsive breakpoints
index.html	Integrates welcome panel section with intro, CTAs, stats, and feature cards; updates metadata and article counts
2025/06/10/static-blog-performance/index.html	New article page about performance optimization techniques
archives/, categories/, tags/, 404/	Updates article counts from 6 to 7 and last update timestamp
README.md	Adds project documentation with local preview instructions and content structure
LICENSE	Adds MIT License file

The implementation is well-structured and follows consistent patterns throughout. The image performance optimization is properly integrated into the page refresh cycle, and the CSS for the welcome panel includes appropriate responsive design considerations. The changes successfully deliver on all stated objectives in the PR description.

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[AlexanderJ-Carter]

@copilot open a new pull request to apply changes based on the comments in this thread

[Copilot]

@AlexanderJ-Carter I've opened a new pull request, #3, to work on those changes. Once the pull request is ready, I'll request review from you.

[AlexanderJ-Carter]

@copilot 解决冲突

[Copilot]

@AlexanderJ-Carter I've opened a new pull request, #4, to work on those changes. Once the pull request is ready, I'll request review from you.

[AlexanderJ-Carter]

@copilot

解决冲突问题

[Copilot]

@AlexanderJ-Carter I've opened a new pull request, #5, to work on those changes. Once the pull request is ready, I'll request review from you.