Each home-hub tile now leads with an icon next to its label: 🖥 Dashboard,
📡 Flow, 📜 Logs, 📊 Stats, ⚙ Settings, 💬 Matrix. Matches the existing
emoji nav-icon convention (the per-agent link strip uses 📊/🖥/⬡/↳).
Markup: the label is wrapped with the icon in a .home-tile-head flex row
(icon + label on one line, description below). The icon is aria-hidden —
decorative, the label carries the accessible name. CSS-only layout
addition; no behaviour change. Build green.
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