feat: reduce Copilot icon size to 0.9x in status bar

[j4rviscmd]

Summary

Resolves #16

Scale the Copilot icon displayed in the status bar to 0.9x its original size (both width and height) by adjusting the SVG viewBox and regenerating the woff font.

Changes

• assets/icons/copilot-dark.svg — viewBox changed from -2 0 29 23 to -3.6 -1.3 32.2 25.6
• assets/icons/copilot-light.svg — same viewBox change
• assets/fonts/copilot-icons.woff — regenerated from updated SVG files using svgtofont
• package-lock.json — updated to reflect svgtofont dependency (replaced fantasticon)

Approach

Expanding the viewBox while keeping the path data unchanged causes the icon to appear smaller relative to the available space. The minX/minY offsets are adjusted to keep the icon centered.

[j4rviscmd]

Why SVG files appear in the diff

The SVG files (copilot-dark.svg, copilot-light.svg) are source files used to generate the woff font. The VSCode extension only uses the woff font at runtime — the SVGs are not loaded directly.

Why the SVG diff is unavoidable

To resize the icon, the viewBox attribute in the SVG must be changed, and then the woff font must be regenerated from the updated SVG using svgtofont. There is no way to update the woff without first modifying the SVG source.

What changed

• viewBox before: -2 0 29 23 (width=29, height=23)
• viewBox after: -3.6 -1.3 32.2 25.6 (width=32.2, height=25.6)

By expanding the coordinate space while keeping the path data identical, the icon renders at approximately 0.9× its original size when VSCode scales it to a fixed pixel size. The minX/minY offsets are adjusted to keep the icon centered.

The SVG change is committed alongside the woff regeneration so the source and generated artifact stay in sync.