Set terminal tab title to scrcpy and device name

[zxmpg41]

Summary

Set the terminal tab/window title to scrcpy when the program starts, and update it to scrcpy - <device name> once a device is connected. This makes it easy to identify scrcpy tabs when multiple tabs are open in a terminal multiplexer or tabbed terminal emulator (e.g. Windows Terminal, macOS Terminal, tmux).

The title respects --window-title: if a custom window title is provided, the terminal tab title becomes scrcpy - <custom title> instead of using the device name.

The original terminal title is restored (cleared) when scrcpy exits, allowing the shell to reset its own title on the next prompt.

Changes

• app/src/util/term.h — declared new function sc_term_set_title(const char *title)
• app/src/util/term.c — implemented sc_term_set_title(): only emits output when stdout is a TTY (isatty() on Unix/macOS, _isatty() on Windows), so piping (e.g. scrcpy | tee logs.txt) is not affected; emits an OSC 0 escape sequence (\033]0;<title>\007) to stdout, supported by all modern terminal emulators; on Windows additionally calls SetConsoleTitleA() unconditionally as a fallback for legacy console hosts (cmd.exe, conhost) that do not process VT sequences
• app/src/main.c — calls sc_term_set_title("scrcpy") immediately on startup; calls sc_term_set_title("") on exit to restore the terminal title
• app/src/scrcpy.c — calls sc_term_set_title("scrcpy - <name>") after the device handshake completes (using --window-title if provided, otherwise the device name reported by the server); calls sc_term_set_title("") on exit
• app/src/usb/scrcpy_otg.c — same behaviour in OTG mode: updates the terminal tab title to scrcpy - <USB product name> once the device is known; calls sc_term_set_title("") on exit

[rom1v]

Thank you, interesting. 👍

I think it should be printed only when the output is a tty (using isatty() I guess), otherwise with scrcpy | tee logs.txt the logs would include these special characters.

Also, please rebase onto dev.

[zxmpg41]

Good point. I've added isatty() and _isatty() for legacy windows check and rebased onto dev.
Ready for another look whenever you get a chance.