feat(v0.3.0): Add WASM support & fix webpack bundling issues

## Changes:
- Add WebAssembly (WASM) support for browser environments
- Refactor native-loader to use dynamic require (module.createRequire)
- Create independent browser-loader for WASM module loading
- Lazy-load loaders in utils.ts to prevent webpack bundling
- Add build:check script to verify no static requires in output
- Add build:wasm script for WASM compilation
- Update tests to call initializeSweph() in beforeAll hook

## Breaking Changes:
- initializeSweph() must now be awaited before using calculation functions

## Verification:
- All 34 tests pass
- build:check confirms no static swisseph-v2 requires
- Webpack can no longer detect native module imports at build time

Author: bishalg

dist/browser-loader.d.ts

@@ -0,0 +1,40 @@
+/**
+ * Browser/WASM Loader for @af/sweph
+ *
+ * This module is COMPLETELY INDEPENDENT from native-loader.ts.
+ * It handles loading the WebAssembly module for browser environments.
+ *
+ * The package.json "browser" field aliases native-loader to this file
+ * when bundling for browser targets.
+ */
+/**
+ * Load and initialize the WASM module
+ * This is the browser equivalent of loadNativeBinary from native-loader.ts
+ */
+export declare function loadNativeBinary(options?: {
+    wasmUrl?: string;
+}): Promise<any>;
+/**
+ * Get native module instance (throws if not loaded)
+ * Browser equivalent of getNativeModuleSync
+ */
+export declare function getNativeModuleSync(): any;
+/**
+ * Platform info for browser (always returns browser info)
+ */
+export declare function getPlatformInfo(): {
+    platform: string;
+    arch: string;
+    key: string;
+    isSupported: boolean;
+    prebuildPaths: string[];
+};
+/**
+ * Check if WASM is available (always true in supported browsers)
+ */
+export declare function hasPrebuilds(): boolean;
+/**
+ * Get supported platforms for browser
+ */
+export declare function getSupportedPlatforms(): readonly string[];
+//# sourceMappingURL=browser-loader.d.ts.map

dist/browser-loader.d.ts.map

@@ -2,10 +2,17 @@
  * Load the Swiss Ephemeris native module from pre-built binaries
  * Falls back to swisseph-v2 if prebuilds are not available
  *
- * @returns Swiss Ephemeris native module instance
+ * Uses dynamic requires to prevent webpack bundling of native modules.
+ *
+ * @returns Promise resolving to Swiss Ephemeris native module instance
  * @throws Error if no compatible native module can be loaded
  */
-export declare function loadNativeBinary(): any;
+export declare function loadNativeBinary(_options?: any): Promise<any>;
+/**
+ * Synchronous version for backward compatibility
+ * Will throw if module hasn't been loaded yet via async loadNativeBinary
+ */
+export declare function getNativeModuleSync(): any;
 /**
  * Get information about the current platform
  * Useful for debugging deployment issues