[bronze-ff]

Closes #752.

This picks up #932 by @amaralthalesalves. Its author closed it to leave the feature to the maintainers, and the branch was left up for anyone to continue. The commit credits them as co-author.

What it does

Both pad paths cut each stick axis at XInput's 7849 (about 24%): pad_sdl.c's stick_value and nn_hid.c's XInput pads_read. Both now go through one function, hos_stick_axis(v, zone) in nn_hid.c. A new Stick dead zone row on the Controls tab picks the threshold: Default (24%), 5%, 10%, 15%, 20% or 30%.

• At Default the output is the same as before for every input on both paths. An ini without the key reads as 0, which is today's behaviour.
• The cut stays per axis, and only the threshold changes. The game's own dead zone still applies after it.
• The row is saved as stick_dead_zone by its name. It is preset_exempt, like the other controls rows.

Changes from #932, needed for current main

• Option id 11. The original Insert menu: Stick dead zone (Default 24%, 5%–30%), one cut for SDL and XInput pads (#752) #932 used 18, which now belongs to HOS_OPT_GYRO. After review, this PR moved from 10 to 11 because vk: descriptor slotgen and sampler cache #1330 uses 10 for Frame rate. The two options use separate entries in the renderer's table.
• The row uses the new Row layout (hint, restart, preset_exempt).
• tests/test_stick_dead_zone.py is Insert menu: Stick dead zone (Default 24%, 5%–30%), one cut for SDL and XInput pads (#752) #932's test, adapted to the row layout and to option 11. It also checks that the row is preset_exempt and that no HOS_OPT_ enum takes 11.

Validation

On CachyOS (GCC 16, Clang 23, RTX 5060, Hyprland/Wayland), at main 7dbdcdc:

• tests/test_stick_dead_zone.py fails on main without this change and passes with it, with gcc/g++ and with clang/clang++. It covers all 65,536 inputs on both paths: Default is the old cut, the five other thresholds are exact, and the ini parsing and labels are right.
• tests/run_all.py reports 168 passed and 1 failed. The failure is nx2/test_nup_read_name.py, which needs zstandard, missing here.
• In the game, a virtual USB Xbox Series controller opened the menu and went to Controls, where Stick dead zone shows < Default (24%) >. Right set it to 5% and saved stick_dead_zone=1, and Left brought it back to Default. The other controls rows in the ini were unchanged.

Not tested: the XInput path on Windows, a physical controller, and how the game feels with each threshold.

🤖 Generated with Claude Code

Review follow-up

On Windows with LLVM-MinGW Clang 23.1.5, the stick dead-zone test passed for all 65,536 inputs in both paths with option 11, and the rumble option test passed. After the merge from main, the audio output and widescreen checks also passed. The controller validation above describes the original implementation and used a virtual pad on CachyOS.