feat(s52): export Notifier public contract + sync extending.md B11

src/portfolio_optimiser/__init__.py

@@ -8,6 +8,16 @@ from portfolio_optimiser.ledger import (
     SavingsLedger,
     realize,
 )
+from portfolio_optimiser.notify import (
+    ConsoleNotifier,
+    FileNotifier,
+    Notifier,
+    NotifierConfig,
+    NotifyError,
+    NotifyRefused,
+    WebhookNotifier,
+    build_notifier,
+)
 from portfolio_optimiser.run import (
     GoalReached,
     PortfolioResult,
@@ -35,5 +45,14 @@ __all__ = [
     "GoalConfig",
     "load_goal_config",
     "GoalReached",
+    # S5.2 varsling (B11): the declared Notifier contract + deliverable implementations
+    "Notifier",
+    "ConsoleNotifier",
+    "FileNotifier",
+    "WebhookNotifier",
+    "build_notifier",
+    "NotifierConfig",
+    "NotifyError",
+    "NotifyRefused",
     "__version__",
 ]