Address PR #20 feedback:

- Removed PersonalStorage (redundant - RoomStorage handles both via room_id)
- Added ensure_room() and ensure_tracking() methods for explicit creation
- Added @runtime_checkable to Protocols for isinstance checks
- Added tests/test_ports.py with 11 unit tests for storage protocols

tests/test_ports.py

@@ -0,0 +1,194 @@
+"""Tests for core/ports.py — storage interfaces."""
+
+import pytest
+from typing import Self
+
+from core.models import Bounty, RoomData, TrackingData, TrackedBounty
+from core.ports import RoomStorage, TrackingStorage
+
+
+class MockRoomStorage:
+    """Mock implementation of RoomStorage for testing."""
+
+    def __init__(self):
+        self._rooms: dict[int, RoomData] = {}
+
+    def load(self, room_id: int) -> RoomData | None:
+        return self._rooms.get(room_id)
+
+    def save(self, room_data: RoomData) -> None:
+        self._rooms[room_data.room_id] = room_data
+
+    def ensure_room(self, room_id: int) -> RoomData:
+        if room_id not in self._rooms:
+            self._rooms[room_id] = RoomData(room_id=room_id, bounties=[], next_id=1)
+        return self._rooms[room_id]
+
+    def add_bounty(self, room_id: int, bounty: Bounty) -> None:
+        if room_id not in self._rooms:
+            self.ensure_room(room_id)
+        self._rooms[room_id].bounties.append(bounty)
+
+    def update_bounty(self, room_id: int, bounty: Bounty) -> None:
+        if room_id in self._rooms:
+            for i, b in enumerate(self._rooms[room_id].bounties):
+                if b.id == bounty.id:
+                    self._rooms[room_id].bounties[i] = bounty
+                    break
+
+    def delete_bounty(self, room_id: int, bounty_id: int) -> None:
+        if room_id in self._rooms:
+            self._rooms[room_id].bounties = [
+                b for b in self._rooms[room_id].bounties if b.id != bounty_id
+            ]
+
+    def get_bounty(self, room_id: int, bounty_id: int) -> Bounty | None:
+        if room_id in self._rooms:
+            for b in self._rooms[room_id].bounties:
+                if b.id == bounty_id:
+                    return b
+        return None
+
+
+class MockTrackingStorage:
+    """Mock implementation of TrackingStorage for testing."""
+
+    def __init__(self):
+        self._tracking: dict[tuple[int, int], TrackingData] = {}
+
+    def load(self, room_id: int, user_id: int) -> TrackingData | None:
+        return self._tracking.get((room_id, user_id))
+
+    def save(self, tracking_data: TrackingData) -> None:
+        self._tracking[(tracking_data.room_id, tracking_data.user_id)] = tracking_data
+
+    def ensure_tracking(self, room_id: int, user_id: int) -> TrackingData:
+        key = (room_id, user_id)
+        if key not in self._tracking:
+            self._tracking[key] = TrackingData(
+                room_id=room_id, user_id=user_id, tracked=[]
+            )
+        return self._tracking[key]
+
+    def track_bounty(self, room_id: int, user_id: int, tracked: TrackedBounty) -> None:
+        key = (room_id, user_id)
+        if key not in self._tracking:
+            self.ensure_tracking(room_id, user_id)
+        self._tracking[key].tracked.append(tracked)
+
+    def untrack_bounty(self, room_id: int, user_id: int, bounty_id: int) -> None:
+        key = (room_id, user_id)
+        if key in self._tracking:
+            self._tracking[key].tracked = [
+                t for t in self._tracking[key].tracked if t.bounty_id != bounty_id
+            ]
+
+
+class TestRoomStorage:
+    def test_mock_implements_room_storage_protocol(self):
+        storage: RoomStorage = MockRoomStorage()
+        assert isinstance(storage, RoomStorage)
+
+    def test_ensure_room_creates_room_if_not_exists(self):
+        storage = MockRoomStorage()
+        room = storage.ensure_room(-1001)
+        assert room.room_id == -1001
+        assert room.bounties == []
+        assert room.next_id == 1
+
+    def test_ensure_room_returns_existing_room(self):
+        storage = MockRoomStorage()
+        room1 = storage.ensure_room(-1001)
+        room2 = storage.ensure_room(-1001)
+        assert room1 is room2
+
+    def test_add_bounty_creates_room_if_not_exists(self):
+        storage = MockRoomStorage()
+        bounty = Bounty(
+            id=1,
+            text="Test",
+            link=None,
+            due_date_ts=None,
+            created_at=0,
+            created_by_user_id=123,
+        )
+        storage.add_bounty(-1001, bounty)
+        room = storage.load(-1001)
+        assert room is not None
+        assert len(room.bounties) == 1
+        assert room.bounties[0].text == "Test"
+
+    def test_update_bounty(self):
+        storage = MockRoomStorage()
+        bounty = Bounty(
+            id=1,
+            text="Original",
+            link=None,
+            due_date_ts=None,
+            created_at=0,
+            created_by_user_id=123,
+        )
+        storage.add_bounty(-1001, bounty)
+        updated = Bounty(
+            id=1,
+            text="Updated",
+            link=None,
+            due_date_ts=None,
+            created_at=0,
+            created_by_user_id=123,
+        )
+        storage.update_bounty(-1001, updated)
+        result = storage.get_bounty(-1001, 1)
+        assert result is not None
+        assert result.text == "Updated"
+
+    def test_delete_bounty(self):
+        storage = MockRoomStorage()
+        bounty = Bounty(
+            id=1,
+            text="Test",
+            link=None,
+            due_date_ts=None,
+            created_at=0,
+            created_by_user_id=123,
+        )
+        storage.add_bounty(-1001, bounty)
+        storage.delete_bounty(-1001, 1)
+        assert storage.get_bounty(-1001, 1) is None
+
+
+class TestTrackingStorage:
+    def test_mock_implements_tracking_storage_protocol(self):
+        storage: TrackingStorage = MockTrackingStorage()
+        assert isinstance(storage, TrackingStorage)
+
+    def test_ensure_tracking_creates_if_not_exists(self):
+        storage = MockTrackingStorage()
+        tracking = storage.ensure_tracking(-1001, 123456)
+        assert tracking.room_id == -1001
+        assert tracking.user_id == 123456
+        assert tracking.tracked == []
+
+    def test_ensure_tracking_returns_existing(self):
+        storage = MockTrackingStorage()
+        t1 = storage.ensure_tracking(-1001, 123456)
+        t2 = storage.ensure_tracking(-1001, 123456)
+        assert t1 is t2
+
+    def test_track_bounty_creates_tracking_if_not_exists(self):
+        storage = MockTrackingStorage()
+        tracked = TrackedBounty(bounty_id=5, created_at=0)
+        storage.track_bounty(-1001, 123456, tracked)
+        result = storage.load(-1001, 123456)
+        assert result is not None
+        assert len(result.tracked) == 1
+        assert result.tracked[0].bounty_id == 5
+
+    def test_untrack_bounty(self):
+        storage = MockTrackingStorage()
+        tracked = TrackedBounty(bounty_id=5, created_at=0)
+        storage.track_bounty(-1001, 123456, tracked)
+        storage.untrack_bounty(-1001, 123456, 5)
+        result = storage.load(-1001, 123456)
+        assert result is not None
+        assert len(result.tracked) == 0