/**
 * PRE-TRUST A PROJECT ROOT FOR CLAUDE CODE (flow-map-chat-overlay.md §4.7
 * item 5). A hand-off or Open in session session would otherwise start
 * behind Claude Code's "Do you trust the files in this folder?" dialog, and
 * its first message waits there.
 *
 * Verified against Claude Code 2.1.289:
 * - Trust is `projects[<absolute path>].hasTrustDialogAccepted: true` in the
 *   global config, the same record the dialog writes when the user accepts.
 * - The global config is `<config dir>/.config.json` when that legacy file
 *   exists, else `$CLAUDE_CONFIG_DIR/.claude.json` (home directory when the
 *   variable is unset). `<config dir>` is `$CLAUDE_CONFIG_DIR` or `~/.claude`.
 * - A session is trusted when its folder or a parent up to its git root holds
 *   the record, so one entry for the root covers sessions started inside it.
 * - Claude Code re-reads the file under the lock directory `<file>.lock`
 *   before every save and merges `projects` by key, so an entry written
 *   under the same lock survives a running Claude Code.
 *
 * Only this root's record changes; every other key is kept. Nothing is
 * written when the file is missing (Claude Code restores a missing config
 * from its backups, and a stub would hide that), unreadable, or not an
 * object, and never for the home directory, a folder above it or a
 * filesystem root, whose trust would cover every project beneath them.
 */
export declare function trustClaudeCodeProject(root: string, options?: {
    env?: NodeJS.ProcessEnv;
    home?: string;
}): Promise<"trusted" | "already-trusted" | "skipped">;
/** The global config file Claude Code 2.1.289 reads (`getGlobalClaudeFile`). */
export declare function claudeCodeConfigPath(env: NodeJS.ProcessEnv, home: string): Promise<string>;
/**
 * The lock Claude Code takes around a config save: the directory
 * `<file>.lock`, created with mkdir and considered abandoned once its mtime
 * is older than ten seconds. Returns null rather than write without it.
 * Release removes the directory only while it is still the one this call
 * made, so a writer that took over a lock this call held too long keeps it.
 */
export declare function acquireConfigLock(lock: string): Promise<(() => Promise<void>) | null>;
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