export declare function liveGitBranch(cwd: string): string | null;
export declare function isGitWorkTree(cwd: string): boolean;
export type BranchBindingVerdict = {
    status: 'not-applicable';
} | {
    status: 'ok';
} | {
    status: 'needs-heal';
    branch: string;
} | {
    status: 'unbound-detached';
} | {
    status: 'drift';
    boundBranch: string;
    currentBranch: string | null;
};
export declare const BOUND_BRANCH_ISOLATIONS: readonly ["current", "branch", "worktree"];
export declare function requiresBranchBinding(isolation: string | null): boolean;
export declare function evaluateBranchBinding(input: {
    isolation: string | null;
    boundBranch: string | null;
    currentBranch: string | null;
    gitWorkTree?: boolean;
}): BranchBindingVerdict;
/**
 * A `BranchBindingVerdict` joined with the live git facts it was computed
 * from, so callers never re-derive them (or re-read the state file).
 */
export type BranchBindingOutcome = (BranchBindingVerdict | {
    status: 'healed';
    branch: string;
}) & {
    bindingRequired: boolean;
    currentBranch: string | null;
};
/**
 * Single entry point for every consumer of the branch binding: reads
 * isolation/bound_branch straight from `.comet.yaml` (typed — a yaml `null`
 * is a JS null, never a "null" string), spawns git lazily, and optionally
 * performs the lazy heal. Read-only paths (the PreToolUse hook) must pass
 * `heal: false` so resolving never writes to disk.
 */
export declare function resolveBranchBinding(changeDir: string, options: {
    heal: boolean;
    cwd: string;
}): Promise<BranchBindingOutcome>;
export declare function healBoundBranch(changeDir: string, branch: string): Promise<void>;
export declare function driftBlockedMessage(change: string, boundBranch: string, currentBranch: string | null): string;
export declare function driftStaleReason(change: string, boundBranch: string, currentBranch: string | null): string;
export declare function unboundDetachedMessage(change: string): string;
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