Convert all `from x import *` to explicit imports in 12 files, resolving
925 F403/F405 ruff violations. Each name traced to its canonical source
module. Also fixes: duplicate Session import (players.py), missing
sample_team_data fixture param, duplicate method name paperdex_cardset_slash,
unused commands import in package __init__ files, and Play type hint in
play_lock.py.
3 pre-existing code bugs remain (F811 duplicate test names, F821 undefined
`question` variable) — these need investigation, not mechanical fixes.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>