Convert the remaining expect-based test scripts (phase1-6 runtime, usb,
wifi, bluetooth, dbus, greeter, live-iso, posix) to the stdlib python
harness, completing the migration started in 9ec00d4c81. Each script now
prefers booting the live ISO when present (falling back to harddrive.img
with snapshot=on), and retries up to 5 times when QEMU exits early or is
killed (rc 3 / 137) — the host-contention failure mode recorded in the
2026-07-20 runtime-proof status.
qemu-login-expect.py: treat an incomplete step sequence as a failure even
when a pass marker was seen partway through — partial sequences must not
count as a pass.
- apply-patches.sh: add signature-marker checks for build-system patches
to handle cases where reverse-check fails but patch is already applied
- test-baremetal.sh: auto-disable TUI when stdout is not a terminal;
pass CI=1 to make
- test-live-iso-qemu.sh: pass CI=1 via env to prevent repo cook panic
- scripts/run.sh: auto-disable TUI when stdout is not a terminal;
pass CI=1 to qemu launch
- repo.rs: improve TUI initialization error messages (raw mode + alternate
screen) and rustfmt cleanups
- config.rs: auto-detect TTY presence for TUI enablement; use is_terminal()
instead of relying solely on CI env var