Publish harness and TUI open-source

initial sync from the monorepo

crates/codegen/xai-fast-worktree/Cargo.toml

@@ -0,0 +1,70 @@
+[package]
+license = "Apache-2.0"
+name = "xai-fast-worktree"
+version = "0.1.0"
+edition.workspace = true
+description = "High-performance git worktree creation using CoW cloning"
+
+[[bin]]
+name = "fast-worktree"
+path = "src/bin/cli.rs"
+
+[[bin]]
+name = "pool-perf-bench"
+path = "src/bin/pool_perf_bench.rs"
+required-features = ["bench"]
+
+[features]
+default-bazel = ["metadata"]
+bench = ["dep:tempfile"]
+# SQLite metadata DB for worktree tracking. On Linux, serde/serde_json are
+# already pulled in unconditionally (overlay metadata), so this feature
+# effectively only gates rusqlite there.
+metadata = ["dep:rusqlite", "dep:serde", "dep:serde_json", "dep:xai-sqlite-journal"]
+
+[dependencies]
+anyhow = { workspace = true }
+bytes = { workspace = true }
+clap = { workspace = true }
+crossbeam = { workspace = true }
+dashmap = { workspace = true }
+dunce = { workspace = true }
+gix = { workspace = true, features = ["status", "parallel"] }
+gix-status = { version = "0.30.0" }
+globset = { workspace = true }
+ignore = { workspace = true }
+num_cpus = { workspace = true }
+
+reflink-copy = { workspace = true }
+rapidhash = "4.2.0"
+rusqlite = { version = "0.37", features = ["bundled"], optional = true }
+serde = { workspace = true, features = ["derive"], optional = true }
+serde_json = { workspace = true, optional = true }
+tokio-util = { workspace = true }
+tempfile = { workspace = true, optional = true }
+tracing = { workspace = true }
+xai-gix-status = { workspace = true }
+xai-sqlite-journal = { workspace = true, optional = true }
+xai-tty-utils = { workspace = true }
+tracing-subscriber = { workspace = true }
+
+[dev-dependencies]
+tempfile = { workspace = true }
+serde_json = { workspace = true }
+xai-test-utils = { workspace = true }
+# Unconditional because cargo doesn't support feature-gated dev-deps cleanly.
+# Only used by tests behind #[cfg(feature = "metadata")] in db/tests.rs.
+rusqlite = { version = "0.37", features = ["bundled"] }
+
+[target.'cfg(target_os = "linux")'.dev-dependencies]
+libc = { workspace = true }
+nix = { version = "0.30", features = ["fs"] }
+
+[target.'cfg(target_os = "linux")'.dependencies]
+libc = { workspace = true }
+nix = { version = "0.30", features = ["fs"] }
+serde = { workspace = true, features = ["derive"] }
+serde_json = { workspace = true }
+
+[lints]
+workspace = true