fix: update all Stage 2 references to Stage 3 CANONICAL type counts

Comprehensive update of type count references from Stage 2 (31 nouns + 40 verbs)
to Stage 3 CANONICAL (42 nouns + 127 verbs) across entire codebase.

Changes (23 files):
- Core architecture: Memory tracking comments, speedup calculations
- Tests: Type count assertions, enum index expectations, memory benchmarks
- CLI: User-visible type count output
- Augmentations: Type detection comments
- Documentation: Architecture docs, guides, performance docs
- Type embeddings: Regenerated for all 169 types (338KB)

Specific updates:
- 31 → 42 (noun count): 38 occurrences
- 40 → 127 (verb count): 24 occurrences
- 124 → 168 bytes (noun array size): 5 occurrences
- 160 → 508 bytes (verb array size): 5 occurrences
- 284 → 676 bytes (total type tracking): 12 occurrences
- Enum indices updated to match Stage 3 reordering

Type embeddings regenerated:
- 42 noun embeddings (64.5 KB)
- 127 verb embeddings (194.8 KB)
- Total: 338 KB (was 108.8 KB)

All constants, arrays, and tests now consistent with Stage 3 taxonomy.

Fixes #v5.5.1-type-count-migration

src/brainy.ts

@@ -3901,7 +3901,7 @@ export class Brainy<T = any> implements BrainyInterface<T> {
       },
 
       // Phase 1b: O(1) count by type enum (Uint32Array-based, more efficient)
-      // Uses fixed-size type tracking: 284 bytes vs ~35KB with Maps (99.2% reduction)
+      // Uses fixed-size type tracking: 676 bytes vs ~35KB with Maps (98.1% reduction)
       byTypeEnum: (type: NounType) => {
         return this.metadataIndex.getEntityCountByTypeEnum(type)
       },