macos-screen-recorderlisted

# macos-screen-recorder (sck-record) `sck-record.swift` → compiled `sck-record` (binary gitignored; built by `setup-machine`, or `swiftc -O sck-record.swift -o sck-record`). Records the main display + system audio via ScreenCaptureKit. ``` ./sck-record <out.mp4> <seconds> ``` **The one true differentiator:** system audio from the CLI with **zero install** — no BlackHole / loopback virtual device, no sudo; only the standard Screen Recording permission (granted once to whatever app shells out). It is *not* a general "better than OBS/Screen Studio" tool — it fills exactly the headless-CLI-with-system-audio gap. `sck-record` is the raw capture primitive — it records, nothing more. To polish a recording afterward (idle speed-up, auto-zoom, keystroke chips, smoothed cursor, vertical export), pair it with [screenstudio-alternative-skill](https://github.com/connerkward/screenstudio-alternative-skill): record with `sck-record --no-cursor <out.mp4> <seconds>`, then run its post-production pass on the resulting mp4. (Auto-zoom and keystroke overlays additionally need an input-event log captured *during* recording, which that skill supplies; `sck-record`'s pixels alone cover idle speed-up, cursor smoothing, and vertical export.)