[FIX-006] Importmap Style Blockage

📝 Problem Background

After a production build, the page logic runs correctly but has absolutely no CSS styles. Inspecting the HTML reveals that while Vite's injected <link rel="stylesheet"> tag is present, the page still fails to render styles.

🧪 Effort Metrics

• Attempt Count: 2
• Time Spent: 20 min
• Complexity: ⭐⭐⭐ (Tricky)

🔍 Root Cause Analysis

Manual Importmap Pollution: A manually written <script type="importmap"> in index.html has a very high priority. If it persists after the build, it can interfere with the browser's module resolution, potentially overriding Vite's dynamically generated entry script due to an old version reference, thereby blocking the stylesheet's loading timing.

🛠️ Fix Strategy

Build-Time Sanitizer Ritual:

• Implement a custom plugin in vite.config.ts.
• When command === 'build', use regex to forcibly remove the entire importmap block from the HTML.
• Ensure the production environment exclusively uses Vite's assets/ hosting model.

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Result: Completely resolved the bizarre issue of missing styles in production.