Add SVG support for asset generation

[azchohfi]

Description

Adds the Svg library as a dependency, and detects svg files on manifest update-assets command, converting to a Bitmap to generate the new assets.

Usage Example

winapp manifest update-assets .\image.svg

Related Issue

Fixes #321

Type of Change

• ✨ New feature

Checklist

• New tests added for new functionality (if applicable)
• Tested locally on Windows
• Main README.md updated (if applicable)
• docs/usage.md updated (if CLI commands changed)
• Language-specific guides updated (if applicable)
• Sample projects updated to reflect changes (if applicable)

AI Description

This update introduces support for SVG file formats in the update-assets command of the CLI, allowing SVG assets to be detected and converted into bitmap images for app use. Users can now generate assets from SVG as shown in the following example:

winapp manifest update-assets .\image.svg

[github-actions]

Build Metrics Report

Binary Sizes

Artifact	Baseline	Current	Delta
CLI (ARM64)	13.66 MB	18.04 MB	📈 +4.38 MB (+32.08%)
CLI (x64)	12.96 MB	17.28 MB	📈 +4.32 MB (+33.29%)
MSIX (ARM64)	5.94 MB	7.59 MB	📈 +1.65 MB (+27.71%)
MSIX (x64)	6.17 MB	7.90 MB	📈 +1.72 MB (+27.93%)
NPM Package	12.10 MB	15.54 MB	📈 +3.44 MB (+28.46%)

Test Results

✅ 257 passed, 6 skipped out of 263 tests in 54.0s (+2 tests, +1.0s vs. baseline)

CLI Startup Time

36ms median (x64, winapp --version) · ✅ no change vs. baseline

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Updated 2026-02-26 23:58:33 UTC · commit 64fa00a · workflow run