feat(memory): add MEMORY_FILE_PATH environment variable support

- Add environment variable MEMORY_FILE_PATH to configure custom storage location
- Support both absolute and relative paths
- Update documentation with configuration examples
- Bump version to 0.6.3

src/memory/README.md

@@ -158,6 +158,29 @@ Add this to your claude_desktop_config.json:
 }
 ```
 
+#### NPX with custom setting
+
+The server can be configured using the following environment variables:
+
+```json
+{
+  "mcpServers": {
+    "memory": {
+      "command": "npx",
+      "args": [
+        "-y",
+        "@modelcontextprotocol/server-memory"
+      ],
+      "env": {
+        "MEMORY_FILE_PATH": "/path/to/custom/memory.json"
+      }
+    }
+  }
+}
+```
+
+- `MEMORY_FILE_PATH`: Path to the memory storage JSON file (default: `memory.json` in the server directory)
+
 ### System Prompt
 
 The prompt for utilizing memory depends on the use case. Changing the prompt will help the model determine the frequency and types of memories created.