- 根 Cargo.toml 改为纯 workspace，主程序与库移至 src/function-stream
- 新增 [workspace.package] 统一 version / edition，成员 crate 使用 *.workspace = true
- Makefile：VERSION 从根 Cargo.toml 读取，构建显式 -p function-stream，lite 使用 OPTIMIZE_FLAGS
- wasm_host bindgen WIT 路径改为 ../../wit，以适配子目录中的 package manifest
- 移除根 src 下旧入口与 runtime/storage 模块，streaming/wasm 等 crate 路径与导入同步调整
- examples-validator 与全仓 edition 对齐为 2024

Co-authored-by: Cursor <cursoragent@cursor.com>

- Move coordinator sources from legacy/ to src/coordinator/src; embed via coordinator_body.rs; update function-stream #[path].

- Move servicer sources from legacy/; embed via servicer_body.rs; update function-stream #[path].

- Remove unused config legacy shim (src/config/src/legacy/mod.rs).

- Drop empty function-stream-job-manager workspace member; refresh Cargo.lock.

- CLI: collapse nested ifs in repl.rs for clippy::collapsible_if.

- streaming_planner: add crate-level #![allow(dead_code)] for reserved APIs under -D warnings.

- .gitignore: **/__pycache__/ and *.py[cod] so bytecode is never committed.