/**
 * Doctor — memory checks: project root resolution, memory database, knowledge
 * graph, Second Brain model and document extractors, memory proficiency.
 * Extracted from doctor-project-checks.ts.
 */
import type { HealthCheck } from './doctor-env-checks.js';
/** o-16 (AC-6): the marker walk that resolves "this project" for the Memory
 *  & Knowledge store can silently adopt a wrong ancestor — the incident that
 *  motivated this check was a shared scratch parent's bare `.monomind`
 *  capturing an unrelated fixture, with no visible symptom until a search
 *  came back empty. Disclose the resolved root and why it was chosen, so a
 *  user can see which directory their brain is keyed to without reading code
 *  or debug logs. Always 'info': the resolution itself is never a health
 *  problem, only the failure to see it was.
 *
 *  Named/scoped to "Memory Project Root", not a bare "Project Root" (o-16
 *  revision 1, reviewer MAJOR 2): `MONOMIND_PROJECT_ROOT` has a SECOND,
 *  independent consumer — `mcp-tools/guidance-tools.ts:findProjectRoot()`,
 *  which uses a different marker (`.claude`) and can legitimately resolve a
 *  different directory (see the divergence explained at
 *  `memory-bridge.ts`'s `getProjectRoot()` doc comment). A generic "Project
 *  Root" label would claim there is one true answer when this commit is
 *  what creates a state where two resolvers can disagree — this check must
 *  not be the thing that misleads about that. */
export declare function checkProjectRoot(): Promise<HealthCheck>;
export declare function checkMemoryDatabase(): Promise<HealthCheck>;
/** Memory knowledge graph (cognee port): entities/relations/rules distilled
 * from sessions and org runs. Informational — an empty graph on a fresh
 * project is normal, so it never fails. */
export declare function checkMemoryKnowledgeGraph(): Promise<HealthCheck>;
/** Second Brain: when there is any indexed knowledge — ingested docs in this
 * project, the personal global brain, or the monograph god-node chunk —
 * semantic search needs the local embedding model. Its absence is silent
 * (search degrades to keyword matching), so surface it here instead. */
export declare function checkSecondBrainModel(): Promise<HealthCheck>;
/**
 * AutoMem proficiency check — reports memory learning health
 */
export declare function checkMemoryProficiency(): Promise<HealthCheck>;
/** Per-extractor health for Second Brain document ingestion (MEM-8/MEM-9):
 * one check per format family (PDF, DOCX, XLSX/XLS/ODS, PPTX/ODT/ODP/EPUB,
 * legacy DOC/PPT/Pages) instead of a single blanket "documents" check, so
 * `doctor` can report exactly which formats are functional vs broken.
 * No-op (empty array) when the documents capability isn't active — nothing
 * to report if this project doesn't ingest documents. */
export declare function checkDocumentExtractors(): Promise<HealthCheck[]>;
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