feat: add distributed architecture with sharding and coordination

- Wire up distributed components (Coordinator, ShardManager, CacheSync)
- Implement automatic sharding for S3 storage (256 shards)
- Add read/write separation for operational modes
- Zero-config automatic detection for distributed mode
- Add mutex implementation for thread safety
- Fix metadata filtering in find operations
- Fix neural API vector similarity calculations
- Improve batch operations performance
- Add Bluesky distributed setup example

BREAKING CHANGE: None - backward compatible

tests/unit/utils/paramValidation.test.ts

@@ -134,14 +134,14 @@ describe('Zero-Config Parameter Validation', () => {
     it('should require either data or vector', () => {
       expect(() => validateAddParams({
         type: NounType.Document
-      } as AddParams)).toThrow('must provide either data or vector')
+      } as AddParams)).toThrow('Invalid add() parameters: Missing required field \'data\'')
     })
     
     it('should validate NounType', () => {
       expect(() => validateAddParams({
         data: 'test',
         type: 'InvalidType' as any
-      })).toThrow('invalid NounType: InvalidType')
+      })).toThrow('Invalid NounType: \'InvalidType\'')
     })
     
     it('should validate vector dimensions', () => {