Addressed issues when running basic-memory on the Windows platform (#252)

Signed-off-by: Manuel Bliemel <manuel.bliemel@gmail.com>

src/basic_memory/repository/entity_repository.py

@@ -57,7 +57,7 @@ class EntityRepository(Repository[Entity]):
         """
         query = (
             self.select()
-            .where(Entity.file_path == str(file_path))
+            .where(Entity.file_path == Path(file_path).as_posix())
             .options(*self.get_load_options())
         )
         return await self.find_one(query)
@@ -68,7 +68,7 @@ class EntityRepository(Repository[Entity]):
         Args:
             file_path: Path to the entity file (will be converted to string internally)
         """
-        return await self.delete_by_fields(file_path=str(file_path))
+        return await self.delete_by_fields(file_path=Path(file_path).as_posix())
 
     def get_load_options(self) -> List[LoaderOption]:
         """Get SQLAlchemy loader options for eager loading relationships."""

src/basic_memory/repository/project_repository.py

@@ -46,7 +46,7 @@ class ProjectRepository(Repository[Project]):
         Args:
             path: Path to the project directory (will be converted to string internally)
         """
-        query = self.select().where(Project.path == str(path))
+        query = self.select().where(Project.path == Path(path).as_posix())
         return await self.find_one(query)
 
     async def get_default_project(self) -> Optional[Project]:

src/basic_memory/repository/search_repository.py

@@ -6,6 +6,7 @@ import time
 from dataclasses import dataclass
 from datetime import datetime
 from typing import Any, Dict, List, Optional
+from pathlib import Path
 
 from loguru import logger
 from sqlalchemy import Executable, Result, text
@@ -59,8 +60,11 @@ class SearchIndexRow:
         if not self.type == SearchItemType.ENTITY.value and not self.file_path:
             return ""
 
+        # Normalize path separators to handle both Windows (\) and Unix (/) paths
+        normalized_path = Path(self.file_path).as_posix()
+        
         # Split the path by slashes
-        parts = self.file_path.split("/")
+        parts = normalized_path.split("/")
 
         # If there's only one part (e.g., "README.md"), it's at the root
         if len(parts) <= 1: