Remove legacy source provider sync path

dns_sync/interfaces.py

@@ -8,7 +8,6 @@ from .adapters import (
     NormalizedObject,
     PlanAction,
 )
-from .models import DesiredRecord, ProviderCapabilities, ProviderRecord
 
 
 class AdapterPlugin(Protocol):
@@ -20,24 +19,3 @@ class AdapterPlugin(Protocol):
     def discover(self, object_type: str) -> list[DiscoveredObject]: ...
     def apply(self, action: PlanAction) -> ApplyResult | None: ...
     def verify(self, object: NormalizedObject) -> bool: ...
-
-
-# Compatibility protocols for the existing DNS-only execution path. They remain
-# in place until the current plugins and CLI are migrated to AdapterPlugin.
-class SourcePlugin(Protocol):
-    name: str
-
-    def discover(self) -> list[DesiredRecord]: ...
-
-
-class ProviderPlugin(Protocol):
-    name: str
-    capabilities: ProviderCapabilities
-
-    def connect(self) -> None: ...
-    def list_records(self) -> dict[str, ProviderRecord]: ...
-    def add_record(self, record: DesiredRecord) -> str | None: ...
-    def update_record(self, record: DesiredRecord) -> str | None: ...
-    def delete_record(self, hostname: str) -> str | None: ...
-    def verify_record(self, record: DesiredRecord) -> bool: ...
-    def capacity(self) -> tuple[int, int | None]: ...