/**
 * #2661 — Git workspace identity: separate WORKTREE identity from
 * REPOSITORY identity.
 *
 * Daemon dedup, state, and scheduling have historically been keyed on the
 * worktree path (`process.cwd()`), so N Git worktrees of the same repository
 * behave as N unrelated projects — the cardinality bug behind the worktree
 * daemon fanout. This service resolves the identity that is SHARED across
 * worktrees:
 *
 *   worktreeRoot   `git rev-parse --show-toplevel`   — per-worktree
 *   commonGitDir   `git rev-parse --git-common-dir`  — shared by all worktrees
 *   repositoryId   sha256(canonical commonGitDir)    — stable repo key
 *   head           `git rev-parse HEAD`              — current commit
 *
 * Two worktrees of one repository resolve to the SAME repositoryId (and,
 * when checked out at the same commit, the same head) — the key ingredient
 * for cross-worktree job dedup (issue invariant 5).
 *
 * Non-git directories degrade gracefully: repositoryId falls back to a hash
 * of the resolved directory path (prefixed `dir:`-style via isGit=false), so
 * callers never need a special case.
 */
export interface GitWorkspaceIdentity {
    /** Absolute root of this worktree (or the input dir when not a git repo). */
    worktreeRoot: string;
    /** Absolute path of the shared .git directory (equals worktreeRoot/.git for non-worktree clones). */
    commonGitDir: string;
    /** Stable id shared by ALL worktrees of one repository. */
    repositoryId: string;
    /** Current HEAD commit sha ('' when not a git repo or unborn HEAD). */
    head: string;
    /** False when the directory is not inside a git repository. */
    isGit: boolean;
}
/**
 * Resolve the git workspace identity for a directory. Never throws.
 */
export declare function resolveGitWorkspaceIdentity(dir: string): GitWorkspaceIdentity;
/** Test hook: clear the per-process identity cache. */
export declare function resetGitIdentityCacheForTests(): void;
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