feat(FN-3329): refine dashboard TUI system panel and setup wizard UX

- Expand dashboard TUI state/controller wiring for system panel interactions and mouse toggle behavior
- Update dashboard TUI app rendering and tests to cover the new panel controls
- Improve SetupWizardModal layout and interaction behavior with matching CSS and test updates
- Restore docs/research.md wording and add a changeset for the published CLI package

Fusion-Task-Id: FN-3329

.changeset/dashboard-tui-system-panel-and-mouse-toggle.md

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+"@runfusion/fusion": patch
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+Improve dashboard TUI System panel discoverability and panel navigation:
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+- Default the focused panel to **System** on launch so `Enter` immediately opens the dashboard URL in the browser. Adds an inline hint row (`[Enter] open URL · [c] copy token · [M] mouse on/off`) that is only visible while System is focused.
+- Add `[c]` shortcut (when System is focused) to copy the auth token to the clipboard, with the same flash + log-line feedback used by the Logs `[c]` copy. Mouse mode normally blocks click-drag selection of the token, so this gives users a keyboard path.
+- Add `[M]` global shortcut to toggle xterm mouse reporting at runtime. Off → click-drag does native text selection (the only path that works under tmux's `mouse on`, where `Shift+drag` is intercepted by tmux before reaching the terminal). On → wheel scrolling on Logs/Files/Git list panels works as before.
+- Fix `←`/`→` panel cycling order: `SECTION_ORDER` was `[system, logs, utilities, stats, settings]`, which didn't match the visual layout. Changed to `[system, logs, stats, utilities, settings]` so left/right now matches both the on-screen left-to-right card order and the Tab/Shift+Tab cycle (`PANEL_ORDER`). From Logs going right now lands on Stats; from Settings going left now lands on Utilities.
+- Updated the help overlay with the new shortcuts.