- graph.go: Pass subgraph to renderGraph() instead of nil (fixes #657) The nil subgraph was dereferenced in computeDependencyCounts() causing a panic when running `bd graph` on epics. - postinstall.js: Wait for file.close() callback before resolving (fixes #652) On Windows, the file was still locked when extraction started because resolve() was called immediately after file.close() without waiting for the close to complete. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>