Output left + right with a single space separator instead of trying
to right-align to a detected terminal width. Terminal detection is
unreliable when all fds are piped by Claude Code, and hardcoding a
width defeats the purpose. Also removes the x/term dependency.
Replace pgrep with gopsutil/v4 for pure Go process detection.
Now fully cross-platform (Linux, FreeBSD, macOS, Windows) with
zero external exec calls. Add Taskfile and test fixture.
Replace shell-based statusline with native Go for ~4x speedup.
Parses JSON natively, detects git status, checks gitea process,
and formats colored output with proper terminal width handling.
