### Problem
When a window is maximized (`fullscreen 1`) or in full-screen mode, Hyprland's `movefocus` dispatcher does not work — pressing `Super + Arrow Keys` has no effect. This forces users to either unmaximize first or use `Alt+Tab`, breaking the spatial navigation flow.

### Proposed Solution
Two small additions that work together:

**1. `Super + C` — Maximize toggle**
Bind `Super + C` to `fullscreen 1` (maximized mode — window fills the screen but the panel stays visible). This is a common keybinding in many desktop environments and currently unbound in Omarchy.

```lua
o.bind("SUPER + C", "Maximize window", hl.dsp.window.fullscreen({ mode = "maximized" }))
```

**2. Smart focus script for arrow keys**
A small wrapper (`omarchy-smart-focus`) that detects whether the active window is maximized. If it is, it uses `cyclenext` (which bypasses Hyprland's `movefocus` lock) instead of `movefocus`. This makes arrow key navigation work seamlessly regardless of window state.

```bash
#!/bin/bash
# omarchy-smart-focus — directional focus that works while maximized
DIRECTION="${1:?Usage: omarchy-smart-focus <l|r|u|d>}"

FULLSCREEN=$(hyprctl activewindow -j | jq -r '.fullscreen')

if [[ "$FULLSCREEN" == "1" || "$FULLSCREEN" == "2" ]]; then
  if [[ "$DIRECTION" == "l" || "$DIRECTION" == "u" ]]; then
    hyprctl dispatch cyclenext prev
  else
    hyprctl dispatch cyclenext
  fi
else
  hyprctl dispatch movefocus "$DIRECTION"
fi
```

Then the default arrow bindings become:
```lua
o.bind("SUPER + LEFT",  "Focus left",  "omarchy-smart-focus l")
o.bind("SUPER + RIGHT", "Focus right", "omarchy-smart-focus r")
o.bind("SUPER + UP",    "Focus up",    "omarchy-smart-focus u")
o.bind("SUPER + DOWN",  "Focus down",  "omarchy-smart-focus d")
```

### Why this matters
- **No flickering:** The window stays maximized during focus changes — no unmaximize → switch → re-maximize dance.
- **Zero config:** Works transparently with the existing scrolling layout.
- **Backward compatible:** When no window is maximized, arrow keys behave exactly as they do today (`movefocus`).

### Environment
- Omarchy Quattro (latest)
- Hyprland scrolling layout