export interface MergeMcpJsonResult {
    outcome: "created" | "merged" | "already-present" | "error";
    warning?: string;
}
/**
 * Merge the Forge MCP server entry into the project .mcp.json with
 * merge-not-clobber semantics.
 *
 * Rules:
 * 1. templatePath absent → "error" (payload missing template; non-fatal).
 * 2. Project .mcp.json absent → read template, write { mcpServers: { forge: ... } } → "created".
 * 3. Project .mcp.json present, valid JSON, already has mcpServers.forge → "already-present" (no-op).
 * 4. Project .mcp.json present, valid JSON, no mcpServers.forge →
 *    deep-merge forge key into existing mcpServers, preserve all other servers → "merged".
 * 5. Project .mcp.json present, malformed JSON → "error", file never overwritten.
 * 6. Write failure → "error" with descriptive warning.
 */
export declare function mergeMcpJson(mcpJsonPath: string, templatePath: string): MergeMcpJsonResult;