niklascfw 9a2307a8ee Add screenshot capture via Joy-Con Capture button ...

- source/screenshot.c, screenshot.h: take_screenshot() saves framebuffer as BMP
- Path: sd:/switch/screenshot/omninx_installer_YYYYMMDD_HHMMSS.bmp (RTC timestamp)
- 3s cooldown, backlight flash on capture; TegraExplorer-style BGR flip
- main.c: call take_screenshot() when jc->cap in all joycon poll loops

Made-with: Cursor

2026-03-01 14:43:58 +01:00

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