test: add mock adapter factories

Create factory functions for mock adapters to simplify test setup.
Includes helpers for creating mock TFile and TFolder objects.

tests/__mocks__/adapters.ts

@@ -0,0 +1,74 @@
+import { IVaultAdapter, IMetadataCacheAdapter, IFileManagerAdapter } from '../../src/adapters/interfaces';
+import { TFile, TFolder, TAbstractFile, CachedMetadata } from 'obsidian';
+
+/**
+ * Create a mock VaultAdapter with jest.fn() for all methods
+ */
+export function createMockVaultAdapter(overrides?: Partial<IVaultAdapter>): IVaultAdapter {
+	return {
+		read: jest.fn(),
+		stat: jest.fn(),
+		getAbstractFileByPath: jest.fn(),
+		getMarkdownFiles: jest.fn(),
+		getRoot: jest.fn(),
+		process: jest.fn(),
+		createFolder: jest.fn(),
+		create: jest.fn(),
+		...overrides
+	};
+}
+
+/**
+ * Create a mock MetadataCacheAdapter with jest.fn() for all methods
+ */
+export function createMockMetadataCacheAdapter(overrides?: Partial<IMetadataCacheAdapter>): IMetadataCacheAdapter {
+	return {
+		getFileCache: jest.fn(),
+		getFirstLinkpathDest: jest.fn(),
+		resolvedLinks: {},
+		unresolvedLinks: {},
+		...overrides
+	};
+}
+
+/**
+ * Create a mock FileManagerAdapter with jest.fn() for all methods
+ */
+export function createMockFileManagerAdapter(overrides?: Partial<IFileManagerAdapter>): IFileManagerAdapter {
+	return {
+		renameFile: jest.fn(),
+		trashFile: jest.fn(),
+		processFrontMatter: jest.fn(),
+		...overrides
+	};
+}
+
+/**
+ * Helper to create a mock TFile
+ */
+export function createMockTFile(path: string, stat?: { ctime: number; mtime: number; size: number }): TFile {
+	return {
+		path,
+		basename: path.split('/').pop()?.replace('.md', '') || '',
+		extension: 'md',
+		name: path.split('/').pop() || '',
+		stat: stat || { ctime: Date.now(), mtime: Date.now(), size: 100 },
+		vault: {} as any,
+		parent: null
+	} as TFile;
+}
+
+/**
+ * Helper to create a mock TFolder
+ */
+export function createMockTFolder(path: string, children?: TAbstractFile[]): TFolder {
+	const folder = {
+		path,
+		name: path.split('/').pop() || '',
+		children: children || [],
+		vault: {} as any,
+		parent: null,
+		isRoot: function() { return path === '' || path === '/'; }
+	} as TFolder;
+	return folder;
+}