### System details
- Omarchy 4.0.0-1 (Quattro stable), upgraded from pre-Quattro installation
- Linux 7.1.8-arch1-3
- NuPhy keyboard (USB cable connection)

### What's wrong?

After upgrading to Quattro, Caps Lock became stuck ON with no way to toggle it off. This caused authentication failures at the lock screen.

### Root cause

The Quattro upgrade changed the default `kb_options` from:
```lua
kb_options = "compose:caps"
```
to:
```lua
kb_options = "compose:caps,shift:both_capslock_cancel"
```

The new `shift:both_capslock_cancel` option allows toggling Caps Lock via both Shifts. However, the migration script (`1781485962.sh`) preserves the user's existing `kb_options` value without adding the new option.

This creates two problems:
1. **During upgrade:** New defaults may be temporarily applied, potentially toggling Caps Lock ON via `shift:both_capslock_cancel`
2. **After upgrade:** User's local config lacks `shift:both_capslock_cancel`, so there's no way to toggle Caps Lock back OFF

### Steps to reproduce

1. Start with pre-Quattro installation having `kb_options = compose:caps` in `~/.config/hypr/input.conf`
2. Upgrade to Quattro
3. If Caps Lock gets toggled ON during upgrade, it cannot be toggled OFF

### Expected behavior

The migration should update `kb_options` to include `shift:both_capslock_cancel` when the user's config doesn't already have it.

### Suggested fix

In migration `1781485962.sh`, after converting `input.conf` to `input.lua`, check if `kb_options` contains `shift:both_capslock_cancel`. If not, append it.

### Workaround

Manually add `shift:both_capslock_cancel` to `kb_options` in `~/.config/hypr/input.lua`:
```lua
kb_options = "compose:caps,shift:both_capslock_cancel",
```