/**
 * Canonical workspace identity resolution.
 *
 * The identity must be stable across symlink/junction-safe realpaths, distinct
 * per repository and per worktree, and carry no secret content. Branch and HEAD
 * are metadata, never the sole identity.
 */
/** Current workspace index schema version. */
export declare const INDEX_SCHEMA_VERSION = 1;
export interface ResolvedWorkspaceIdentity {
    workspaceId: string;
    canonicalRoot: string;
    filesystemIdentity: string;
    gitRepositoryId?: string;
    gitCommonDir?: string;
    worktreeId?: string;
    branch?: string;
    headCommit?: string;
}
/**
 * Resolve canonical root (symlink/junction-safe) and git identity for a path.
 * Never throws for a usable filesystem path.
 */
export declare function resolveWorkspaceIdentity(cwd: string): ResolvedWorkspaceIdentity;
export interface IdentityMeta extends ResolvedWorkspaceIdentity {
    indexVersion: number;
}
export declare function toIdentityMeta(identity: ResolvedWorkspaceIdentity): IdentityMeta;
/**
 * Compute the storage root for workspace index data. Never inside the source
 * directory by default. Per-workspace isolation is achieved with subdirectories
 * keyed by workspace id.
 */
export declare function defaultIndexRoot(): string;
export declare function workspaceIndexDir(root: string, workspaceId: string): string;
/** Temporary sibling used during atomic generation replacement. */
export declare function tempDirUnder(root: string): string;
export declare function systemTempDir(): string;
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