fix: CRITICAL systemic VFS metadata bug across ALL storage adapters (v4.7.4)

CRITICAL BUG FIX - Workshop Team Unblocked!

This hotfix resolves a systemic bug affecting ALL 7 storage adapters that
caused VFS queries to return empty results even when data existed.

Bug Pattern: `if (!metadata) continue` in getNouns()/getVerbs()
Impact: VFS queries returned empty arrays despite 577 relationships existing
Root Cause: Storage adapters skipped entities if metadata file read returned null

Fixes:
- storage: Fix metadata skip bug in 12 locations across 7 adapters
  (TypeAware, Memory, FileSystem, GCS, S3, R2, OPFS, Azure)
- neural: Fix SmartExtractor weighted score threshold (28 failures → 4)
- neural: Fix PatternSignal priority ordering
- api: Fix Brainy.relate() weight parameter not returned

Test Results:
- TypeAwareStorageAdapter: 17/17 passing (was 7 failures)
- SmartExtractor: 42/46 passing (was 28 failures)
- Neural clustering: 3/3 passing
- Brainy.relate(): 20/20 passing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/storage/adapters/s3CompatibleStorage.ts

@@ -3683,11 +3683,11 @@ export class S3CompatibleStorage extends BaseStorage {
     const nounsWithMetadata: HNSWNounWithMetadata[] = []
 
     for (const node of result.nodes) {
+      // FIX v4.7.4: Don't skip nouns without metadata - metadata is optional in v4.0.0
       const metadata = await this.getNounMetadata(node.id)
-      if (!metadata) continue
 
       // Apply filters if provided
-      if (options.filter) {
+      if (options.filter && metadata) {
         // Filter by noun type
         if (options.filter.nounType) {
           const nounTypes = Array.isArray(options.filter.nounType)
@@ -3729,7 +3729,7 @@ export class S3CompatibleStorage extends BaseStorage {
         vector: [...node.vector],
         connections: new Map(node.connections),
         level: node.level || 0,
-        metadata: metadata
+        metadata: (metadata || {}) as NounMetadata // Empty if none
       }
       nounsWithMetadata.push(nounWithMetadata)
     }