Fix privacy page stylesheet hash syncing

[alvin000009238]

Motivation

• The privacy page CSS reference was hard-coded to an old hashed filename so its styles broke after new builds.
• The build-time hash injector only updated public/index.html, leaving other static pages out of sync with Vite output.

Description

• Update public/privacy.html to reference the current hashed stylesheet and add id="vite-css" so it can be targeted by the injector.
• Extend scripts/inject-hash.js to iterate over an htmlPaths array and update both public/index.html and public/privacy.html with the hashed JS/CSS filenames from the Vite manifest.
• Preserve the existing manifest parsing and regex replacement logic and add per-file log output when each HTML file is updated.

Testing

• Ran npm test (node --test tests/frontend/*.test.js) and all frontend tests passed with 15 tests and 0 failures.
• The injector script was exercised locally by running the build-step replacement flow (manifest-driven replacements) and successfully wrote updated HTML files as logged by the script.

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Codex Task

[gemini-code-assist]

Code Review

This pull request updates the inject-hash.js script to support multiple HTML files by iterating over an array of paths, including both index.html and privacy.html. It also adds an existence check for these files and updates the CSS link in privacy.html with a new hash and an ID. I have no feedback to provide.

[Copilot]

Pull request overview

This PR fixes broken styling on the static privacy page by ensuring its Vite-hashed asset references stay in sync with build output, extending the existing build-time hash injection step beyond public/index.html.

Changes:

• Updated public/privacy.html to use the current hashed CSS filename and added id="vite-css" so it can be reliably replaced by the injector.
• Extended scripts/inject-hash.js to update multiple HTML targets (index.html and privacy.html) using the Vite manifest, with per-file success logging.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
scripts/inject-hash.js	Applies manifest-driven JS/CSS filename replacement across multiple static HTML files.
public/privacy.html	Adds the vite-css link marker and updates the CSS href so the injector can keep it current.

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[Copilot]

htmlPaths includes files that are intended to be kept in sync, but missing files are currently skipped silently (return without any log). This can hide a path typo or unexpected missing file and lead to shipping an out-of-date HTML page. Consider logging a warning (or failing the script) when a configured HTML target is not found.

Suggested change

	if (!fs.existsSync(htmlPath)) {
	if (!fs.existsSync(htmlPath)) {
	console.warn(`[Hash Injector] Configured HTML target not found: ${path.relative(projectRoot, htmlPath)}`);

[Copilot]

The indentation inside the nested Object.keys(manifest).forEach(...) block is inconsistent (the inner block contents are not indented relative to the callback). Please re-indent this section to match the rest of the file to keep it readable and reduce the chance of future editing mistakes.