/**
 * Phase 196 (issue #177) — CADENCE-owned ephemeral state that must never be
 * a tracked file: per-worktree loop position (`state.json`/`STATE.md`),
 * local trust decisions (`mcp-trust.json`), and the intelligence scratch
 * cache. Tracking any of these guarantees a real git merge conflict the
 * moment two CADENCE worktrees on different phases sync. See
 * docs/concepts.md.
 */
export declare const CADENCE_OWNED_GITIGNORE_ENTRIES: readonly string[];
/**
 * Pure planner: given the current contents of a `.gitignore` file, return
 * only the CADENCE-owned entries that are not already present as an exact
 * line. Returns `[]` when all four are already present (idempotent).
 */
export declare function planGitignoreEntries(existingContent: string): string[];
/**
 * Impure writer: ensure `<root>/.gitignore` contains all four CADENCE-owned
 * entries, appending only what's missing behind a header comment. No-op
 * (no write) when everything is already present.
 */
export declare function ensureGitignoreEntries(root: string): Promise<void>;
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