feat: Add @af/sweph-wasm package (Phase 2)

- Isolated WebAssembly implementation for browser support
- Implements ISwephAdapter interface
- Exports unified creation factory createSweph()
- Includes Typescript definitions and WASM binaries

Author: bishalg

packages/wasm/dist/adapter.d.ts

@@ -0,0 +1,53 @@
+/**
+ * @af/sweph-wasm - WASM Adapter
+ *
+ * Implements ISwephAdapter interface for WebAssembly module.
+ */
+import type { ISwephAdapter, CalcResult, RiseTransResult, AzAltResult } from '@af/sweph-core';
+/**
+ * WASM module interface (Emscripten generated)
+ */
+interface WasmModule {
+    _malloc(size: number): number;
+    _free(ptr: number): void;
+    getValue(ptr: number, type: string): number;
+    setValue(ptr: number, value: number, type: string): void;
+    UTF8ToString(ptr: number): string;
+    HEAPU8: Uint8Array;
+    _swe_julday(year: number, month: number, day: number, hour: number, gregflag: number): number;
+    _swe_calc_ut(tjd_ut: number, ipl: number, iflag: number, xxPtr: number, serrPtr: number): number;
+    _swe_set_ephe_path(pathPtr: number): void;
+    _swe_set_sid_mode(sid_mode: number, t0: number, ayan_t0: number): void;
+    _swe_get_ayanamsa(tjd_et: number): number;
+    _swe_get_ayanamsa_ut(tjd_ut: number): number;
+    _swe_rise_trans(tjd_ut: number, ipl: number, starnamePtr: number, epheflag: number, rsmi: number, geoposPtr: number, atpress: number, attemp: number, tretPtr: number, serrPtr: number): number;
+    _swe_azalt(tjd_ut: number, calc_flag: number, geoposPtr: number, atpress: number, attemp: number, xinPtr: number, xazPtr: number): void;
+    _swe_version(ptr: number): void;
+}
+/**
+ * WebAssembly adapter implementing ISwephAdapter
+ */
+export declare class WasmAdapter implements ISwephAdapter {
+    private module;
+    SEFLG_SWIEPH: number;
+    SEFLG_SPEED: number;
+    SE_CALC_RISE: number;
+    SE_CALC_SET: number;
+    SE_CALC_MTRANSIT: number;
+    constructor(wasmModule: WasmModule);
+    swe_julday(year: number, month: number, day: number, hour: number, gregflag: number): number;
+    swe_calc_ut(tjd_ut: number, ipl: number, iflag: number): CalcResult | {
+        error: string;
+    };
+    swe_set_ephe_path(path: string): void;
+    swe_set_sid_mode(sid_mode: number, t0: number, ayan_t0: number): void;
+    swe_get_ayanamsa(tjd_et: number): number;
+    swe_get_ayanamsa_ut(tjd_ut: number): number;
+    swe_rise_trans(tjd_ut: number, ipl: number, starname: string, epheflag: number, rsmi: number, geopos: number[], atpress: number, attemp: number): RiseTransResult | {
+        error: string;
+    };
+    swe_azalt(tjd_ut: number, calc_flag: number, geopos: number[], atpress: number, attemp: number, xin: number[]): AzAltResult;
+    swe_version(): string;
+}
+export {};
+//# sourceMappingURL=adapter.d.ts.map

packages/wasm/dist/adapter.d.ts.map

@@ -0,0 +1,33 @@
+/**
+ * @af/sweph-wasm
+ *
+ * Swiss Ephemeris WebAssembly module for browser-based Vedic astrology calculations.
+ *
+ * @example
+ * ```typescript
+ * import { createSweph } from '@af/sweph-wasm';
+ *
+ * const sweph = await createSweph();
+ * const planets = sweph.calculatePlanets(new Date());
+ * ```
+ */
+export * from '@af/sweph-core';
+export { WasmAdapter } from './adapter';
+export { loadWasmModule, getAdapter, isLoaded, isWasmSupported } from './loader';
+export type { WasmLoadOptions } from './loader';
+import { WasmLoadOptions } from './loader';
+import type { ISwephInstance } from '@af/sweph-core';
+/**
+ * Create and initialize a Swiss Ephemeris instance for browser
+ */
+export declare function createSweph(options?: WasmLoadOptions): Promise<ISwephInstance>;
+/**
+ * Initialize Swiss Ephemeris (alias for createSweph for API compatibility)
+ */
+export declare function initializeSweph(options?: WasmLoadOptions): Promise<void>;
+declare const _default: {
+    createSweph: typeof createSweph;
+    initializeSweph: typeof initializeSweph;
+};
+export default _default;
+//# sourceMappingURL=index.d.ts.map