Graphenium v0.16.1: Audit fixes — Stack Graphs wiring, Datalog exposure, hub filtering
v0.16.1 fixes 6 reachability issues identified in the post-launch audit:
- Stack Graphs wiring: resolve_cross_file_calls() now runs during gm run (not just tests), creating real cross-file edges with 4 types (TRANSITIVE_CALL, EXPORT_MAPPING, IMPORT_SYMBOL, CROSS_MODULE_CALL)
- Datalog exposure: run_datalog MCP tool registered + --datalog CLI flag added to gm query
- OpenTelemetry CLI: observe subcommand with trace import and overlay
- Version: Bumped from 0.15.5 to 0.16.1
- Namespace hub filtering: god_nodes and architecture_summary now filter out aggregation hubs
- PCH hub suppression: ratio and diversity heuristics in hub detection
Full audit: Graphenium-v0.16.0-Reachability-Audit.md
363 tests pass, 0 clippy errors, formatting clean.