/**
 * Session storage for takt
 *
 * Manages persona sessions and input history persistence.
 */
/**
 * Write file atomically using temp file + rename.
 * This prevents corruption when multiple processes write simultaneously.
 */
export declare function writeFileAtomic(filePath: string, content: string, mode?: number): void;
/** Get path for storing input history */
export declare function getInputHistoryPath(projectDir: string): string;
/** Maximum number of input history entries to keep */
export declare const MAX_INPUT_HISTORY = 100;
/** Load input history */
export declare function loadInputHistory(projectDir: string): string[];
/** Save input history (atomic write) */
export declare function saveInputHistory(projectDir: string, history: string[]): void;
/** Add an entry to input history */
export declare function addToInputHistory(projectDir: string, input: string): void;
import type { PersonaSessionData } from '../types.js';
export type { PersonaSessionData };
/** Get path for storing persona sessions */
export declare function getPersonaSessionsPath(projectDir: string, storageDirectory?: string): string;
/** Load saved persona sessions. Returns empty if provider has changed. */
export declare function loadPersonaSessions(projectDir: string, currentProvider?: string, storageDirectory?: string): Record<string, string>;
/**
 * Resolve persona session ID with provider-aware key fallback.
 *
 * Priority:
 * 1) "{persona}:{provider}" (collision-safe key)
 * 2) "{persona}" (legacy/simple key)
 */
export declare function resolvePersonaSessionId(sessions: Record<string, string>, persona: string, provider?: string): string | undefined;
/** Save persona sessions (atomic write) */
export declare function savePersonaSessions(projectDir: string, sessions: Record<string, string>, provider?: string, storageDirectory?: string): void;
/**
 * Update a single persona session atomically.
 * Uses read-modify-write with atomic file operations.
 */
export declare function updatePersonaSession(projectDir: string, persona: string, sessionId: string | undefined, provider?: string, storageDirectory?: string): void;
/** Clear all saved persona sessions */
export declare function clearPersonaSessions(projectDir: string): void;
/** Get the worktree sessions directory */
export declare function getWorktreeSessionsDir(projectDir: string, storageDirectory?: string): string;
/** Encode a worktree path to a safe filename */
export declare function encodeWorktreePath(worktreePath: string): string;
/** Get path for a worktree's session file */
export declare function getWorktreeSessionPath(projectDir: string, worktreePath: string, storageDirectory?: string): string;
/** Load saved persona sessions for a worktree. Returns empty if provider has changed. */
export declare function loadWorktreeSessions(projectDir: string, worktreePath: string, currentProvider?: string, storageDirectory?: string): Record<string, string>;
/** Update a single persona session for a worktree (atomic) */
export declare function updateWorktreeSession(projectDir: string, worktreePath: string, personaName: string, sessionId: string | undefined, provider?: string, storageDirectory?: string): void;
/**
 * Get the Claude CLI project session directory path.
 * Claude CLI stores sessions in ~/.claude/projects/{encoded-project-path}/
 */
export declare function getClaudeProjectSessionsDir(projectDir: string): string;
/**
 * Clear Claude CLI project sessions.
 * Removes all session files (*.jsonl) from the project's session directory.
 */
export declare function clearClaudeProjectSessions(projectDir: string): void;
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