v0.5.5

Performance

• Merge 8 sequential O(E) lookup passes into 2, reducing serial overhead
• Wrap symbol_table in Arc to avoid deep-cloning 621K-entry HashMap
• Walk AST once per file instead of once per entity in scope resolver
• Skip non-code file types (JSON, YAML, etc.) in bag-of-words resolution

Benchmarks (10-core M-series Mac)

Repo	Before	After	Improvement
cli/cli (10K entities)	2.1s	1.5s	-29%
terraform (37K entities)	9.3s	6.4s	-31%
grafana (596K entities)	382s CPU	337s CPU	-12%