/**
 * Atomically write content to a file using temp-file-then-rename pattern.
 * Write to <path>.tmp, then fs.renameSync to <path>.
 * Prevents corruption if process crashes mid-write.
 */
export declare function atomicWriteFile(filePath: string, content: string): void;
/** Check if a file or directory exists. */
export declare function fileExists(filePath: string): boolean;
/** Check if a path exists AND is a regular file (not a directory). */
export declare function isFile(filePath: string): boolean;
/** Ensure a directory exists, creating it recursively if needed. */
export declare function ensureDir(dirPath: string): void;
/**
 * Resolve the package's own root directory (where content/pipeline/, content/knowledge/, etc. live).
 * Works whether scaffold is run from the repo or installed globally via npm/brew.
 */
export declare function getPackageRoot(): string;
/** Resolve the pipeline directory (bundled, unless running against scaffold itself). */
export declare function getPackagePipelineDir(projectRoot?: string): string;
/** Resolve the knowledge directory (bundled, unless running against scaffold itself). */
export declare function getPackageKnowledgeDir(projectRoot?: string): string;
/** Resolve the tools directory (bundled, unless running against scaffold itself). */
export declare function getPackageToolsDir(projectRoot?: string): string;
/** Resolve the skills template directory (bundled, unless running against scaffold itself). */
export declare function getPackageSkillsDir(projectRoot?: string): string;
/** Resolve the methodology directory (bundled, unless running against scaffold itself). */
export declare function getPackageMethodologyDir(projectRoot?: string): string;
/** Resolve the guides directory (bundled, unless running against scaffold itself). */
export declare function getPackageGuidesDir(projectRoot?: string): string;
/** Resolve the modes directory (bundled, unless running against scaffold itself). */
export declare function getPackageModesDir(projectRoot?: string): string;
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