* Dashboard / Layout / index CSS — flexbox cleanup so the sidebar
scrolls independently and dashboard panels fill available height
without overflowing the viewport (min-height: 0 on the flex
ancestors that were collapsing).
* pyproject.toml — add sqlite_vec runtime dep (groundwork for an
embeddings-backed feature ANTI is wiring up separately).
- CommandPalette (Alt+K): fuzzy action launcher with keyboard nav.
- Toasts: ephemeral notification stack + provider.
- useGlobalHotkeys: Alt+K palette toggle, G-chord navigation
(G D/F/M/L/B/A/S/U/E/C), respects editable-element focus.
- Layout/App: wire ToastProvider at root, mount the palette inside the
authed shell, introduce the global search box in the top bar.
- MazeNETRoute now renders TopologyList inline when no ?topology is
present, instead of bouncing through a redirect.
- index.css: a few global token tweaks consumed by the new chrome.
Fixes a latent breakage: Config.tsx and MazeNET already imported
./Toasts/useToast but the directory was never committed.
