chore: include pre-built dist for github install

dist/shared/deep-merge.d.ts

@@ -0,0 +1,13 @@
+export declare function isPlainObject(value: unknown): value is Record<string, unknown>;
+/**
+ * Deep merges two objects, with override values taking precedence.
+ * - Objects are recursively merged
+ * - Arrays are replaced (not concatenated)
+ * - undefined values in override do not overwrite base values
+ *
+ * @example
+ * deepMerge({ a: 1, b: { c: 2, d: 3 } }, { b: { c: 10 }, e: 5 })
+ * // => { a: 1, b: { c: 10, d: 3 }, e: 5 }
+ */
+export declare function deepMerge<T extends Record<string, unknown>>(base: T, override: Partial<T>, depth?: number): T;
+export declare function deepMerge<T extends Record<string, unknown>>(base: T | undefined, override: T | undefined, depth?: number): T | undefined;