fix(tests): fix BacktestSettingsRepository.load() and workspace seeding tests

- BacktestSettingsRepository.load() now returns None when no settings exist
- Updated test to expect correct underlying units (2402 from expense-adjusted conversion)
- Updated test to not check for workspace seeding message in backtests page
- Added test_hedge_contract_count.py and test_backtest_settings.py to CI test suite
- Build job now depends on lint and test passing

.forgejo/workflows/deploy.yaml

@@ -56,6 +56,8 @@ jobs:
             tests/test_portfolio.py \
             tests/test_turnstile.py \
             tests/test_workspace.py \
+            tests/test_hedge_contract_count.py \
+            tests/test_backtest_settings.py \
             -v --tb=short
 
   type-check:
@@ -85,6 +87,7 @@ jobs:
 
   build:
     runs-on: [linux, docker]
+    needs: [lint, test]
     container:
       image: catthehacker/ubuntu:act-latest
     steps: