feat: add Mutsumi 对话机 navbar entry and chat modal (Google AI Studio/Gemini)

[XRYua]

Motivation

• Add a new Mutsumi对话机 navigation entry under the custom multi-level Links menu and provide a modal chat UI so users can talk to a Google AI Studio (Gemini) model directly from the site.

Description

• Added a new nav item Mutsumi对话机 (href #mutsumi-chat) into the Links children in src/config.ts so it appears in the multi-level navbar menu.
• Introduced src/components/widget/MutsumiChatDialog.astro, a global modal component implementing the chat UI, API Key + model inputs, localStorage persistence, open/close behaviors, and client-side calls to Google Generative Language (generateContent) for Gemini-style responses.
• Mounted the dialog globally in src/layouts/Layout.astro so it is available site-wide and is triggered by the #mutsumi-chat link.
• The modal performs the Gemini call directly from the browser using the user-supplied API key and model name (endpoint: https://generativelanguage.googleapis.com/v1beta/models/{model}:generateContent?key={apiKey}).

Testing

• Ran pnpm -s astro check, which completed with no errors (one unrelated hint).
• Launched the dev server with pnpm dev --host 0.0.0.0 --port 4321 and verified the app served pages.
• Automated UI validation via a Playwright script that opened the site and triggered the Mutsumi对话机 link; a screenshot artifact (mutsumi-chat-modal-open.png) was generated to confirm the modal renders and opens successfully.

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Codex Task

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Project	Deployment	Actions	Updated (UTC)
mizuki	Ready	Preview, Comment	Feb 24, 2026 9:54am

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