T1: restructure to domain/application/infrastructure + schema version 1

- Move cashflow_model/ -> domain/
- Move engine/ -> application/
- Move cli/, sync/, ai/ -> infrastructure/
- Update all imports across codebase and tests
- Add version=1 to FinancialModel.to_dict() with migration hook in from_dict
- Update pyproject.toml: cf entry point and packages.find

Tests: 63/63 pass.

tests/conftest.py

@@ -2,7 +2,7 @@ from uuid import uuid4
 
 import pytest
 
-from cashflow_model import (
+from domain import (
     Account,
     Asset,
     CurrencyConverter,

tests/test_ai.py

@@ -1,5 +1,5 @@
-from ai.assistant import AssistantService
-from ai.prompts import ADVICE_PROMPT, ANALYZE_PROMPT
+from infrastructure.ai.assistant import AssistantService
+from infrastructure.ai.prompts import ADVICE_PROMPT, ANALYZE_PROMPT
 
 
 class TestAssistantService:

tests/test_cli.py

@@ -1,6 +1,6 @@
 from typer.testing import CliRunner
 
-from cli.main import MODEL_PATH, app
+from infrastructure.cli.main import MODEL_PATH, app
 
 runner = CliRunner()
 

tests/test_currency.py

@@ -1,6 +1,6 @@
 import pytest
 
-from cashflow_model import CurrencyConverter, CurrencyError, ExchangeRate
+from domain import CurrencyConverter, CurrencyError, ExchangeRate
 
 
 class TestExchangeRate:

tests/test_excel_sync.py

@@ -1,7 +1,7 @@
 from pathlib import Path
 
-from cashflow_model import FinancialModel
-from sync.excel_sync import ExcelSync, SyncError
+from domain import FinancialModel
+from infrastructure.sync.excel_sync import ExcelSync, SyncError
 
 
 class TestExcelSync:

tests/test_forecast.py

@@ -1,6 +1,6 @@
 import pytest
 
-from engine.forecast import ForecastError, ForecastService
+from application.forecast import ForecastError, ForecastService
 
 
 class TestForecastService:

tests/test_i18n.py

@@ -1,4 +1,4 @@
-from cli.i18n import Translator, get_lang, set_lang, setup_i18n, t
+from infrastructure.cli.i18n import Translator, get_lang, set_lang, setup_i18n, t
 
 
 class TestTranslator:

tests/test_model.py

@@ -1,6 +1,6 @@
 from pathlib import Path
 
-from cashflow_model import (
+from domain import (
     Account,
     Asset,
     ExchangeRate,

tests/test_scenarios.py

@@ -1,4 +1,4 @@
-from engine.scenarios import DEFAULT_SCENARIOS, ScenarioService
+from application.scenarios import DEFAULT_SCENARIOS, ScenarioService
 
 
 class TestScenarioService: