turbo

0bf6973b - perf: Index workspace nodes by name in project_relationships (#13647)

perf: Index workspace nodes by name in project_relationships (#13647) ### Description Projecting the workspace dependency graph looked up every edge's target node by constructing a `PackageName` (heap `String`) wrapped in a `PackageNode` just to probe `node_lookup` — **one allocation per dependency edge** — plus a per-group `name` clone for the source node and a fresh `seen`/`internal` set per group. dhat flagged `project_relationships` as a top-10 allocation site. This builds one `&str -> NodeIndex` index from `node_lookup` up front and probes it by borrowed identity, and reuses the `seen`/`internal` buffers across groups (`clear()` instead of realloc). The graph fields are borrowed disjointly — the index reads `node_lookup` while `add_edge` mutates `workspace_graph` — so nothing is cloned. Edges and error semantics (`MissingDescriptor` / `UnknownRelationshipTarget`) are unchanged. **Verified with dhat** on a ~1,200-workspace pnpm monorepo (`dhat::HeapStats` around `PackageGraphBuilder::build`): package graph construction drops from ~2,128,000 to ~2,100,000 allocations — **~28,300 fewer (~3 MB)**. ### Testing Instructions - `cargo test -p turborepo-repository` — all 419 tests pass, including graph-construction tests (the resulting workspace graph is identical). - `cargo clippy -p turborepo-repository --all-targets` is clean. 🤖 Generated with [Claude Code](https://claude.com/claude-code) https://claude.ai/code/session_01VGZtfhEfgWhrAFMTMhwTfU --- _Generated by [Claude Code](https://claude.ai/code/session_01VGZtfhEfgWhrAFMTMhwTfU)_ Co-authored-by: Claude <noreply@anthropic.com>