/**
 * Artifact Index Builder
 *
 * Scans .aiwg/ directories, extracts metadata from artifact frontmatter,
 * computes checksums, extracts @-mention dependencies, and builds a
 * structured index at .aiwg/.index/.
 *
 * @implements #415
 * @source @src/artifacts/types.ts
 * @tests @test/unit/artifacts/index-builder.test.ts
 */
import type { MetadataEntry, GraphType } from './types.js';
export interface BuildOptions {
    force?: boolean;
    verbose?: boolean;
    scope?: string;
    outputDir?: string;
    graph?: GraphType;
    explicit?: boolean;
}
/**
 * Parse YAML frontmatter from markdown content
 */
export declare function parseFrontmatter(content: string): {
    data: Record<string, unknown>;
    body: string;
};
/**
 * Extract @-mention references from content
 */
export declare function extractMentions(content: string): string[];
/**
 * Extract trigger phrases from a SKILL.md / agent body.
 *
 * Skills declare alternate activation phrases under a `## Triggers`
 * heading; the body typically lists them as bullet points. This
 * function pulls each bullet's leading phrase (the part before any
 * `→` arrow or em-dash explanation), lowercased and trimmed.
 *
 * Returns an empty array when no `## Triggers` section is found —
 * non-skill artifacts get `triggers: undefined` after this is wired.
 *
 * @implements #1214
 */
export declare function extractTriggers(body: string, frontmatter?: Record<string, unknown>): string[];
/**
 * Extract a capability summary for a skill/agent/command/rule.
 *
 * Prefers the frontmatter `description` field (used uniformly across
 * AIWG SKILL.md / agent files). Falls back to the first non-heading
 * paragraph of the body. Capped at 240 chars so the index stays
 * token-tight when surfaced via `aiwg index discover`.
 *
 * @implements #1214
 */
export declare function extractCapability(data: Record<string, unknown>, body: string): string | undefined;
/**
 * Extract a SkillScriptSpec from skill frontmatter (#1227).
 *
 * The `script:` block is optional — only skills with a backing executable
 * declare it. Schema:
 *
 *   script:
 *     entrypoint: scripts/voice_loader.py   # required, relative to skill dir
 *     runtime: python3                       # required (node|python3|bash|...)
 *     cwd: project-root                      # optional, default project-root
 *     argsHint: "--voice <name> --input <path>"  # optional UX hint
 *
 * Returns undefined when the block is absent or malformed. Malformed
 * blocks are silently dropped — index builder logs a warning so authors
 * see it, but the artifact still indexes as a non-executable skill.
 */
export declare function extractSkillScript(data: Record<string, unknown>): import('./types.js').SkillScriptSpec | undefined;
/**
 * Convert Python-style named capture groups (?P<name>...) to JS-style (?<name>...)
 */
export declare function normalizeNamedCaptures(pattern: string): string;
/**
 * Build a MetadataEntry from filename regex captures instead of file content.
 * Used when graphConfig.nodeStrategy === 'filename-metadata'.
 *
 * @implements #723
 */
export declare function buildFilenameMetadataEntry(relativePath: string, fullPath: string, filenamePattern: string | undefined): MetadataEntry;
/**
 * Build the artifact index
 */
/**
 * Detect an AIWG workflow "Flow" document — the declarative YAML metalanguage
 * (`apiVersion: workflow.aiwg.io/v1`, the legacy `ops.aiwg.io/v1` alias, and
 * domain-extension namespaces like `<domain>.workflow.aiwg.io/v1`). Pure-YAML
 * Flow docs carry no markdown frontmatter, so the standard frontmatter path
 * leaves them unclassified and invisible to discovery. This surfaces them as
 * `type: 'flow'` with discovery metadata drawn from `metadata.name`,
 * `spec.description`, and `metadata.labels` (#1540). Returns null for any file
 * that isn't a recognizable Flow document.
 */
export declare function parseFlowDoc(content: string, filePath: string): {
    name?: string;
    description?: string;
    tags: string[];
} | null;
export declare function buildIndex(cwd: string, options?: BuildOptions): Promise<void>;
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