/**
 * The tool-neutral, NON-SECRET, committable per-project marker at `<project>/.ai-game-dev/project.json`
 * — the TypeScript client of the shared C# `com.IvanMurzak.McpPlugin.AgentConfig.ProjectMarker`
 * (`MCP-Plugin-dotnet/McpPlugin/src/AgentConfig/ProjectMarker.cs`). It records the enrolled server
 * target (hosted vs local) and an optional explicit port override, so `ProjectIdentity` resolution and
 * every config writer (engine UI, CLIs, `configure`) agree on ONE source of truth and an override can
 * never silently diverge between the plugin and a terminal-written config.
 *
 * **Credentials are NEVER written here** — they live only in the machine credential store
 * (`credentials.json`, DPAPI/0600). The marker is safe to commit. Unknown fields are preserved on
 * read/merge for forward-compatibility. camelCase keys match the C# `JsonNamingPolicy.CamelCase`.
 */
/** Marker file name inside the `.ai-game-dev` directory (C# `ProjectMarker.FileName`). */
export declare const PROJECT_MARKER_FILE = "project.json";
/** The committable project-marker document (mirrors the C# `ProjectMarker` schema). */
export interface ProjectMarker {
    /** The server the project is enrolled against (hosted `https://ai-game.dev` or a local URL). */
    serverTarget?: string;
    /** The user's explicit local-port override (wins over the deterministic derived port). */
    portOverride?: number;
    /** Unknown fields are preserved on read/merge for forward-compatibility. */
    [key: string]: unknown;
}
/** Absolute path of the marker directory (`<project>/.ai-game-dev`). */
export declare function projectMarkerDir(projectPath: string): string;
/** Absolute path of the marker file (C# `ProjectMarker.PathFor`). */
export declare function projectMarkerPath(projectPath: string): string;
/** Read the marker, or null when it is absent / empty / unparsable. */
export declare function readProjectMarker(projectPath: string): ProjectMarker | null;
/**
 * Merge `marker` into any existing marker and write it back (creating `.ai-game-dev/` as needed).
 * Idempotent for identical inputs; preserves pre-existing keys. `undefined`-valued fields are omitted
 * (matching the C# `WhenWritingNull` policy). Returns the absolute marker path.
 */
export declare function writeProjectMarker(projectPath: string, marker: ProjectMarker): string;
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