Deep-wiki: mermaid diagrams prevent interaction with modal controls

[Kyle-sandeman-mrdfood]

I'm no frontend dev but I see z-index:9999 on the .diagram-zoom-overlay but not on the .diagram-zoom-controls:

skills/.github/plugins/deep-wiki/commands/build.md

Lines 513 to 522 in 5a6104b

	.diagram-zoom-overlay {
	position: fixed;
	inset: 0;
	z-index: 9999;
	background: rgba(0, 0, 0, 0.85);
	backdrop-filter: blur(4px);
	display: flex;
	align-items: center;
	justify-content: center;
	}

skills/.github/plugins/deep-wiki/commands/build.md

Lines 533 to 539 in 5a6104b

	.diagram-zoom-controls {
	display: flex;
	gap: 8px;
	padding: 8px 12px;
	background: #161b22;
	border-bottom: 1px solid #30363d;
	}

In practice, the SVG of the diagram is above the controls, so if you drag the diagram up (or zoom in) it will cover the controls

Copying the z-index directive to the controls seems to fix this but I am unsure if that is the best approach