- discover_active_symbols requested get_most_actives(top*3); once screen_universe
used top*2 headroom for the ETF filter (top=20 -> 40 -> get_most_actives(120)),
this exceeded Alpaca's hard cap of 100 -> HTTP 400, swallowed by the bare
except -> discovery returned EMPTY every cycle. The live loop therefore traded
the static fallback list (non-gappers) instead of real movers all morning.
Fix: cap at min(top*3, 100). Verified: screen_universe now returns 20 real
sub-$20 names, ETF-filtered.
- Add ./momentum launcher (project venv) so 'momentum watch' works without the
full venv path ('python' on the box is the Windows pyenv shim, no deps).
67/67 tests green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
