Extend TTY switching support to F5-F6 (Ctrl+Alt+F1-F6)

[stefanpricopie]

Summary

This PR extends TTY switching support from F1-F4 to F1-F6 for Chromebook keyboards. Previously only Ctrl+Alt+F1-F4 worked; this adds F5-F6 support.

Changes

Added key mappings in the [control+alt] section for both modes:

Non-inverted mode (default behavior - Chrome keys):

• Maps Chrome keys to TTY switches: back→F1, forward→F2, refresh→F3, zoom→F4, scale→F5, brightnessdown→F6, brightnessup→F7, mute→F8

Inverted mode (-i flag - F-keys as default):

• Maps F-keys directly to TTY switches: F1→F1, F2→F2, etc.

This ensures Ctrl+Alt+F1-F6 works in both configuration modes. F7-F8 are also mapped but typically unused since Linux defaults to 6 TTYs (they will work if additional TTYs are configured).

Improvements

• Extended range: F1-F4 → F1-F6 (covers all standard Linux TTYs)
• Better UX: Can now hold Ctrl+Alt and switch between TTYs fluidly (e.g., 2→3→2) without releasing modifiers. Previously required pressing Ctrl+Alt for each switch.

Use Case

TTY switching is essential for:

• Troubleshooting graphics or desktop environment issues
• Accessing recovery consoles when GUI fails
• Server management on Chromebook hardware
• Standard Linux workflow expectations

Testing

Tested on Arch Linux + Hyprland with both keyboard configurations. TTY switching now works smoothly for F1-F6 with improved modifier key behavior.

[WeirdTreeThing]

This will not work with all vivaldi keyboards since the keys are not consistently the same. I'd also prefer if this covered all top row keys, even if most setups don't create VTs past 7 or so. FWIW you can already swtich VTs with super + ctrl + alt + (top row key) but it would be easier to do without having to press super.

[stefanpricopie]

Thanks for the feedback! I've refactored the implementation:

Changes:

• Added get_tty_switching(physmap) function to dynamically generate mappings based on actual keyboard layout
• Removed hardcoded keys (brightnessdown, brightnessup, mute) - now loops through entire physmap
• Covers all top row keys (10-12 keys vs previous 8)
• Works with both inverted and non-inverted modes

[WeirdTreeThing]

Can you send an example of the output with this change?

[stefanpricopie]

Sure! Here's the generated output from my Chromebook (10-key top row):

Physmap: EA E9 E7 91 92 94 95 A0 AE B0

Generated TTY switching section:

[control+alt]
backspace = C-A-delete
f1 = C-A-f1
f2 = C-A-f2
f3 = C-A-f3
f4 = C-A-f4
f5 = C-A-f5
f6 = C-A-f6
f7 = C-A-f7
f8 = C-A-f8
f9 = C-A-f9
f10 = C-A-f10
back = C-A-f1
forward = C-A-f2
refresh = C-A-f3
zoom = C-A-f4
scale = C-A-f5
brightnessdown = C-A-f6
brightnessup = C-A-f7
mute = C-A-f8
volumedown = C-A-f9
volumeup = C-A-f10