feat: implement zero-config system with Node.js 22 compatibility

- Add comprehensive zero-config preset system (production, development, minimal)
- Implement intelligent auto-configuration for models and storage
- Add Node.js version enforcement for ONNX Runtime stability
- Force single-threaded ONNX operations to prevent V8 HandleScope crashes
- Create extensible configuration architecture
- Add 14 distributed system presets for enterprise deployments
- Include detailed documentation and migration guides

BREAKING CHANGE: Now requires Node.js 22.x LTS for optimal stability

src/config/index.ts

@@ -0,0 +1,83 @@
+/**
+ * Zero-Configuration System
+ * Main entry point for all auto-configuration features
+ */
+
+// Model configuration
+export { 
+  autoSelectModelPrecision, 
+  ModelPrecision as ModelPrecisionType,  // Avoid conflict
+  ModelPreset,
+  shouldAutoDownloadModels,
+  getModelPath,
+  logModelConfig
+} from './modelAutoConfig.js'
+
+// Storage configuration
+export { 
+  autoDetectStorage, 
+  StorageType, 
+  StoragePreset,
+  StorageConfigResult,
+  logStorageConfig,
+  // Backward compatibility types
+  type StorageTypeString,
+  type StoragePresetString
+} from './storageAutoConfig.js'
+
+// Shared configuration for multi-instance
+export { 
+  SharedConfig,
+  SharedConfigManager
+} from './sharedConfigManager.js'
+
+// Main zero-config processor
+export {
+  BrainyZeroConfig,
+  processZeroConfig,
+  createEmbeddingFunctionWithPrecision
+} from './zeroConfig.js'
+
+// Strongly-typed presets and enums
+export {
+  PresetName,
+  PresetCategory,
+  ModelPrecision,
+  StorageOption,
+  FeatureSet,
+  DistributedRole,
+  PresetConfig,
+  PRESET_CONFIGS,
+  getPreset,
+  isValidPreset,
+  getPresetsByCategory,
+  getAllPresetNames,
+  getPresetDescription,
+  presetToBrainyConfig
+} from './distributedPresets.js'
+
+// Extensible configuration
+export {
+  StorageProvider,
+  registerStorageAugmentation,
+  registerPresetAugmentation,
+  getConfigRegistry
+} from './extensibleConfig.js'
+
+/**
+ * Main zero-config processor
+ * This is what BrainyData will call
+ */
+export async function applyZeroConfig(input?: string | any): Promise<any> {
+  // Handle legacy config (full object) by detecting known legacy properties
+  if (input && typeof input === 'object' && 
+      (input.storage?.forceMemoryStorage || input.storage?.forceFileSystemStorage || input.storage?.s3Storage)) {
+    // This is a legacy config object - pass through unchanged
+    console.log('📦 Using legacy configuration format')
+    return input
+  }
+  
+  // Process as zero-config (includes new object format)
+  const { processZeroConfig } = await import('./zeroConfig.js')
+  return processZeroConfig(input)
+}