add release variant selection for installation process. This allows u…

[cameronaaron]

Allow Users to choose between stable and security preview releases.

[Copilot]

Pull Request Overview

This PR adds the ability for users to select between stable and security preview release variants during the GrapheneOS web installation process. The implementation includes UI controls for variant selection and logic to modify the release ID accordingly.

• Adds radio button UI for users to choose between stable and security preview releases
• Modifies release selection logic to transform release IDs for preview variants
• Updates user-facing messages to indicate which variant is being downloaded/flashed

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
static/install/web.html	Adds radio button controls for selecting release variant (stable or security preview)
static/js/web-install.js	Implements getReleaseVariant() function, modifies getLatestRelease() to handle preview variants by transforming release IDs, and updates download/flash progress messages to display variant information

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[Copilot]

The radio buttons lack proper identification attributes. Add 'id' attributes to the input elements and update the labels to use 'for' attributes that reference these IDs. For example: <input type=\"radio\" id=\"variant-stable\" name=\"release-variant\" .../> with <label for=\"variant-stable\">.

Suggested change

	<label>
	<input type="radio" name="release-variant" value="stable" checked="checked"/>
	Stable release
	</label>
	<br/>
	<label>
	<input type="radio" name="release-variant" value="preview"/>
	<label for="release-variant-stable">
	<input type="radio" id="release-variant-stable" name="release-variant" value="stable" checked="checked"/>
	Stable release
	</label>
	<br/>
	<label for="release-variant-preview">
	<input type="radio" id="release-variant-preview" name="release-variant" value="preview"/>

[cameronaaron]

Damn thats actually not a bad suggestion

[Copilot]

This error message doesn't provide actionable information for users or developers about why the conversion failed. Consider including the actual releaseId value in the error message, such as: throw new Error(Unable to determine security preview release ID from stable release: ${releaseId} does not end with '00');

Suggested change

	throw new Error("Unable to determine security preview release ID from stable release");
	throw new Error(`Unable to determine security preview release ID from stable release: ${releaseId} does not end with '00'`);