refactor: remove unused amount_threshold and keywords from notification filters

- Remove amount_threshold and keywords fields from NotificationFilters model
- Remove handling of these fields from API routes (GET/PUT)
- Update test to remove amount_threshold reference
- Simplify notification filtering to focus on case-sensitive/insensitive keywords only

These fields were not being used in the actual filtering logic and were just
adding unnecessary complexity to the configuration.

leggend/api/models/notifications.py

@@ -23,8 +23,6 @@ class NotificationFilters(BaseModel):
 
     case_insensitive: List[str] = []
     case_sensitive: Optional[List[str]] = None
-    amount_threshold: Optional[float] = None
-    keywords: List[str] = []
 
 
 class NotificationSettings(BaseModel):

leggend/api/routes/notifications.py

@@ -48,8 +48,6 @@ async def get_notification_settings() -> APIResponse:
             filters=NotificationFilters(
                 case_insensitive=filters_config.get("case-insensitive", []),
                 case_sensitive=filters_config.get("case-sensitive"),
-                amount_threshold=filters_config.get("amount_threshold"),
-                keywords=filters_config.get("keywords", []),
             ),
         )
 
@@ -92,10 +90,6 @@ async def update_notification_settings(settings: NotificationSettings) -> APIRes
             filters_config["case-insensitive"] = settings.filters.case_insensitive
         if settings.filters.case_sensitive:
             filters_config["case-sensitive"] = settings.filters.case_sensitive
-        if settings.filters.amount_threshold:
-            filters_config["amount_threshold"] = settings.filters.amount_threshold
-        if settings.filters.keywords:
-            filters_config["keywords"] = settings.filters.keywords
 
         # Save to config
         if notifications_config:

tests/unit/test_config.py

@@ -190,7 +190,6 @@ class TestConfig:
             "filters": {
                 "case-insensitive": ["salary", "utility"],
                 "case-sensitive": ["SpecificStore"],
-                "amount_threshold": 100.0,
             }
         }
 
@@ -201,4 +200,3 @@ class TestConfig:
         assert "salary" in filters["case-insensitive"]
         assert "utility" in filters["case-insensitive"]
         assert "SpecificStore" in filters["case-sensitive"]
-        assert filters["amount_threshold"] == 100.0