T6: Decompose CLI — main.py → 9 command files, config.py → config_cmd.py

Split infrastructure/cli/:
- main.py (330 LOC) → 9 files in infrastructure/cli/commands/:
  * init.py, forecast.py, scenario.py, whatif.py, compare.py
  * import_xlsx.py, export_xlsx.py, analyze.py, info.py
- config.py (428 LOC) → commands/config_cmd.py (15 sub-commands)
- main.py → app.py (entry point: registers all commands)
- New: paths.py (MODEL_PATH, DATA_DIR)
- New: services.py (composition root + helpers: load_model, save_model,
  build_services, resolve_currency, convert_value, fmt_amount)
- cli/__init__.py (empty) удалён

Each command module: <100 LOC.
pyproject.toml: cf = infrastructure.cli.app:app
tests/test_cli.py: import обновлён на infrastructure.cli.app

CLI behavior идентично, все команды работают.
Tests: 67/67 pass.

infrastructure/cli/commands/compare.py

@@ -0,0 +1,48 @@
+"""cf compare — сравнить все сценарии."""
+import typer
+from rich.table import Table
+
+from infrastructure.cli.i18n import t
+from infrastructure.cli.services import (
+    build_services,
+    console,
+    convert_value,
+    fmt_amount,
+    load_model,
+    resolve_currency,
+)
+
+app = typer.Typer()
+
+CURRENCY_OPTION = typer.Option(None, "--currency", "-c", help=t("cmd.forecast.opt.currency"))
+
+
+@app.command()
+def compare(
+    months: int = typer.Option(12, "--months", "-m", help=t("cmd.compare.opt.months")),
+    currency: str | None = CURRENCY_OPTION,
+) -> None:
+    """Сравнить все сценарии"""
+    model = load_model()
+    target_curr, symbol = resolve_currency(model, currency)
+    _, scenario_service, _, converter = build_services(model)
+    base_curr = model.base_currency
+    results = scenario_service.compare(months)
+
+    table = Table(title=t("cmd.compare.title", currency=target_curr))
+    table.add_column(t("cmd.compare.col.scenario"), style="cyan")
+    table.add_column(t("cmd.forecast.col.balance"), justify="right")
+    table.add_column(t("cmd.forecast.col.income"), justify="right")
+    table.add_column(t("cmd.forecast.col.expenses"), justify="right")
+
+    for name, r in results.items():
+        b = convert_value(converter, r["total_balance"], base_curr, target_curr)
+        i = convert_value(converter, r["total_income"], base_curr, target_curr)
+        e = convert_value(converter, r["total_expenses"], base_curr, target_curr)
+        table.add_row(
+            name,
+            fmt_amount(b, target_curr, symbol),
+            fmt_amount(i, target_curr, symbol),
+            fmt_amount(e, target_curr, symbol),
+        )
+    console.print(table)