[ROADMAP] Phase 2 — Speed (Rust core via PyO3)

[Wolfvin]

Goal

After Phase 1 (#20) solidifies the architecture, port hot-path components to Rust via PyO3. Target: match codebase-memory-mcp indexing speed while keeping all Python logic.

Checklist

• [ROADMAP] Phase 1 — Solidify (Pure Python, no Rust yet) #21 — PyO3 Rust core setup (crate + maturin build + CI wheel publishing)
• Port graph engine to Rust (BFS/DFS, node/edge storage)
• Port index pipeline to Rust (RAM-first, bulk flush)
• Port universal grammar loader to Rust (tree-sitter bindings)
• Start expanding language support toward 50+ languages
• Python pure-Python fallback when Rust extension unavailable

Definition of Done

• Full scan 500-file repo: <200ms
• Symbol query: <5ms
• Graph traversal: <1ms
• pip install codelens still works — user needs no Rust toolchain
• Pre-built wheels published for macOS (arm64/amd64), Linux (amd64/arm64), Windows (amd64)