feat: Enhance currency handling and validation across scenarios

- Updated form template to prefill currency input with default value and added help text for clarity.
- Modified integration tests to assert more descriptive error messages for invalid currency codes.
- Introduced new tests for currency normalization and validation in various scenarios, including imports and exports.
- Added comprehensive tests for pricing calculations, ensuring defaults are respected and overrides function correctly.
- Implemented unit tests for pricing settings repository, ensuring CRUD operations and default settings are handled properly.
- Enhanced scenario pricing evaluation tests to validate currency handling and metadata defaults.
- Added simulation tests to ensure Monte Carlo runs are accurate and handle various distribution scenarios.

tests/test_bootstrap.py

@@ -10,7 +10,15 @@ from sqlalchemy.orm import Session, sessionmaker
 
 from config.database import Base
 from config.settings import AdminBootstrapSettings
-from services.bootstrap import AdminBootstrapResult, RoleBootstrapResult, bootstrap_admin
+from models import MiningOperationType, Project
+from services.bootstrap import (
+    AdminBootstrapResult,
+    PricingBootstrapResult,
+    RoleBootstrapResult,
+    bootstrap_admin,
+    bootstrap_pricing_settings,
+)
+from services.pricing import PricingMetadata
 from services.unit_of_work import UnitOfWork
 
 
@@ -114,3 +122,86 @@ def test_bootstrap_respects_force_reset(unit_of_work_factory: Callable[[], UnitO
         user = users_repo.get_by_email(rotated_settings.email)
         assert user is not None
         assert user.verify_password("rotated")
+
+
+def test_bootstrap_pricing_creates_defaults(unit_of_work_factory: Callable[[], UnitOfWork]) -> None:
+    metadata = PricingMetadata(
+        default_payable_pct=95.0,
+        default_currency="CAD",
+        moisture_threshold_pct=3.0,
+        moisture_penalty_per_pct=1.25,
+    )
+
+    result = bootstrap_pricing_settings(
+        metadata=metadata,
+        unit_of_work_factory=unit_of_work_factory,
+    )
+
+    assert isinstance(result, PricingBootstrapResult)
+    assert result.seed.created is True
+    assert result.projects_assigned == 0
+
+    with unit_of_work_factory() as uow:
+        settings_repo = uow.pricing_settings
+        assert settings_repo is not None
+        stored = settings_repo.get_by_slug("default")
+        assert stored.default_currency == "CAD"
+        assert float(stored.default_payable_pct) == pytest.approx(95.0)
+        assert float(stored.moisture_threshold_pct) == pytest.approx(3.0)
+        assert float(stored.moisture_penalty_per_pct) == pytest.approx(1.25)
+
+
+def test_bootstrap_pricing_assigns_projects(unit_of_work_factory: Callable[[], UnitOfWork]) -> None:
+    metadata = PricingMetadata(
+        default_payable_pct=90.0,
+        default_currency="USD",
+        moisture_threshold_pct=5.0,
+        moisture_penalty_per_pct=0.5,
+    )
+
+    with unit_of_work_factory() as uow:
+        projects_repo = uow.projects
+        assert projects_repo is not None
+        project = Project(
+            name="Project Alpha",
+            operation_type=MiningOperationType.OPEN_PIT,
+        )
+        created = projects_repo.create(project)
+        project_id = created.id
+
+    result = bootstrap_pricing_settings(
+        metadata=metadata,
+        unit_of_work_factory=unit_of_work_factory,
+    )
+
+    assert result.projects_assigned == 1
+    assert result.seed.created is True
+
+    with unit_of_work_factory() as uow:
+        projects_repo = uow.projects
+        assert projects_repo is not None
+        stored = projects_repo.get(project_id, with_pricing=True)
+        assert stored.pricing_settings is not None
+        assert stored.pricing_settings.default_currency == "USD"
+
+
+def test_bootstrap_pricing_is_idempotent(unit_of_work_factory: Callable[[], UnitOfWork]) -> None:
+    metadata = PricingMetadata(
+        default_payable_pct=92.5,
+        default_currency="EUR",
+        moisture_threshold_pct=4.5,
+        moisture_penalty_per_pct=0.75,
+    )
+
+    first = bootstrap_pricing_settings(
+        metadata=metadata,
+        unit_of_work_factory=unit_of_work_factory,
+    )
+    second = bootstrap_pricing_settings(
+        metadata=metadata,
+        unit_of_work_factory=unit_of_work_factory,
+    )
+
+    assert first.seed.created is True
+    assert second.seed.created is False
+    assert second.projects_assigned == 0