refactor: optimize configuration and tool implementations

- Standardized error handling across tool implementations
- Improved return type consistency for tool execution results
- Simplified configuration parsing and type definitions
- Enhanced type safety for various configuration schemas
- Cleaned up and normalized tool response structures
- Updated SSE and event subscription tool implementations

src/config/boilerplate.config.ts

@@ -0,0 +1,35 @@
+export const BOILERPLATE_CONFIG = {
+  configuration: {
+    LOG_LEVEL: {
+      type: "string" as const,
+      default: "debug",
+      description: "Logging level",
+      enum: ["error", "warn", "info", "debug", "trace"],
+    },
+    CACHE_DIRECTORY: {
+      type: "string" as const,
+      default: ".cache",
+      description: "Directory for cache files",
+    },
+    CONFIG_DIRECTORY: {
+      type: "string" as const,
+      default: ".config",
+      description: "Directory for configuration files",
+    },
+    DATA_DIRECTORY: {
+      type: "string" as const,
+      default: ".data",
+      description: "Directory for data files",
+    },
+  },
+  internal: {
+    boilerplate: {
+      configuration: {
+        LOG_LEVEL: "debug",
+        CACHE_DIRECTORY: ".cache",
+        CONFIG_DIRECTORY: ".config",
+        DATA_DIRECTORY: ".data",
+      },
+    },
+  },
+};