USB-C ATTACH ORIENTATION FIXTURE
================================
Extract all files together. Python 3.9 or later, standard library only.

  python3 cc_orientation.py --kind synthetic synthetic-captures.csv
  python3 test_actual_program.py -v

The example data are constructed. Use a copy of observations-blank.csv
for actual settled DC voltages from the isolated and documented fixture.

  python3 cc_orientation.py --kind observed my-captures.csv

Each capture is a separate insertion. Preserve the marked orientation,
repeat number, and actual CC1, CC2 and VBUS readings in volts.
Take three complete readings in each of eight groups. Confirm the source
control with both links open and the orientation map with both fitted.
Change links only with the cable unplugged and fixture voltage at zero.
The experiment does not establish power capability, PD, or timing.
