chore: recovery checkpoint - v3.0 API successfully recovered

CRITICAL CHECKPOINT - DO NOT PUSH TO GITHUB

Recovery Status:
- Successfully recovered brainy.ts from compiled JavaScript
- All core v3.0 API methods functional (add, get, update, delete, relate, find, etc.)
- Neural subsystem intact (562KB embedded patterns, NLP working)
- Augmentation pipeline operational (20+ augmentations)
- HNSW clustering system complete
- Triple Intelligence compiled (needs constructor fix)
- Test suite validates functionality

Changes preserved:
- 898 files with changes from last 3 days
- 144,475 insertions
- All augmentation improvements
- All test coverage enhancements
- Complete v3.0 feature set

This is a LOCAL checkpoint only - contains recovered work after corruption incident.
Created backup in .backups/brainy-full-20250910-151314.tar.gz

Branch: recovery-checkpoint-20250910-151433
Date: Wed Sep 10 03:18:04 PM PDT 2025

.recovery-workspace/dist-backup-20250910-141917/indices/fieldIndex.d.ts

@@ -0,0 +1,76 @@
+/**
+ * Field Index for efficient field-based queries
+ * Provides O(log n) lookups for field values and range queries
+ */
+interface RangeQueryOptions {
+    field: string;
+    min?: any;
+    max?: any;
+    includeMin?: boolean;
+    includeMax?: boolean;
+}
+export declare class FieldIndex {
+    private indices;
+    private sortedIndices;
+    private indexedFields;
+    /**
+     * Add a document to the field index
+     */
+    add(id: string, metadata: Record<string, any>): void;
+    /**
+     * Remove a document from the field index
+     */
+    remove(id: string, metadata: Record<string, any>): void;
+    /**
+     * Query for exact field value match
+     * O(1) hash lookup
+     */
+    queryExact(field: string, value: any): string[];
+    /**
+     * Query for multiple values (IN operator)
+     * O(k) where k is number of values
+     */
+    queryIn(field: string, values: any[]): string[];
+    /**
+     * Query for range of values
+     * O(log n + m) where m is number of results
+     */
+    queryRange(options: RangeQueryOptions): string[];
+    /**
+     * Query with complex where clause
+     */
+    query(where: Record<string, any>): string[];
+    /**
+     * Mark sorted index as needing rebuild
+     */
+    private markSortedIndexDirty;
+    /**
+     * Ensure sorted index is up to date for a field
+     */
+    private ensureSortedIndex;
+    /**
+     * Binary search for start position (inclusive)
+     */
+    private binarySearch;
+    /**
+     * Binary search for end position (inclusive)
+     */
+    private binarySearchEnd;
+    /**
+     * Debug method to inspect index contents
+     */
+    debugIndex(field?: string): any;
+    /**
+     * Get statistics about the index
+     */
+    getStats(): {
+        indexedFields: number;
+        totalValues: number;
+        totalMappings: number;
+    };
+    /**
+     * Clear all indices
+     */
+    clear(): void;
+}
+export {};