/**
 * Resolves the location of the vendored skills directory.
 *
 * The orchestrated skills (master-plan, tdd, grill-with-docs, ...) are vendored
 * INTO the diablo package under `skills/`, so they ship with the npm package and
 * evolve lockstep with the plan parser. Their path must therefore be derived
 * from diablo's OWN module location — never the target project's cwd, since
 * `diablo run` executes inside an arbitrary project directory.
 *
 * Both layouts must work from one rule:
 *   - dev:   module at <root>/src/cli/main.ts, skills at <root>/skills
 *   - built: module at <root>/dist/main.js,   skills at <root>/skills
 *
 * Walking up from the module's directory until a `skills/` dir is found covers
 * both (and any nesting). Pure: the directory predicate is injected, so the
 * walk-up rule is unit-tested without touching the filesystem.
 */
/** Returns true if the given absolute path is an existing directory. */
export type DirExists = (path: string) => boolean;
/**
 * Walks up from `startDir`, returning the first ancestor (including startDir
 * itself) that contains a `skills/` directory. Throws if none is found.
 */
export declare function resolveSkillsDir(startDir: string, dirExists: DirExists): string;
/** Builds the SKILL.md path for a named skill under a skills directory. */
export declare function skillFile(skillsDir: string, name: string): string;