Port the eval to Rust as murmur-eval; remove the Swift Eval/

.gitignore

@@ -3,11 +3,6 @@
 .swiftpm/
 xcuserdata/
 DerivedData/
-# Your voice recordings and run output stay local.
-Eval/clips/*.wav
-Eval/clips/*.m4a
-Eval/results/
-
 # Personal signing settings (Team ID)
 App/Signing.local.xcconfig
 

CLAUDE.md

@@ -4,5 +4,6 @@ Push-to-talk dictation: hold a key, speak, and cleaned-up text is pasted at the
 
 - **Murmur is the Rust workspace in `rust/`**, for macOS (the menu-bar app) and Linux (the Hyprland daemon). The crates and the interfaces between them are in [rust/CONTRACTS.md](rust/CONTRACTS.md); change it together with its callers. `cd rust && cargo test --workspace` runs the tests; CI (`.github/workflows/rust.yml`) also runs `cargo fmt --check` and `cargo clippy --workspace --all-targets -- -D warnings` on macOS and Linux.
 - **Linux (Hyprland/Omarchy):** if you're running on Linux, start with [rust/linux/README.md](rust/linux/README.md): setup, system packages, `rust/linux/install.sh`, the API key, Hyprland bindings, and a testing checklist.
-- **Swift, being retired:** the original macOS app (`App/`, `Core/`) and the eval (`Eval/`, macOS only) stay until the eval and the release scripts are ported. Don't add features there.
-- The cleanup prompt drives most of the quality. It lives in `rust/crates/murmur-core/src/prompt.rs` and, byte for byte, in `Core/Sources/MurmurKit/CleanupPrompt.swift`; a Rust test fails if they differ, so edit both. Check changes with the eval.
+- **Eval:** `murmur-eval` (`rust/crates/murmur-eval`) scores speech-to-text and the cleanup prompt against recordings in `rust/eval/clips/`; see "Eval harness" in the README.
+- **Swift, being retired:** the original macOS app (`App/`, `Core/`) stays until it's deleted. Don't add features there.
+- The cleanup prompt drives most of the quality. It lives in `rust/crates/murmur-core/src/prompt.rs` and, byte for byte, in `Core/Sources/MurmurKit/CleanupPrompt.swift`; a Rust test fails if they differ, so edit both. Check changes with `murmur-eval run` (and `--prompt <file>` for a draft).

Core/Sources/MurmurKit/CleanupPrompt.swift

@@ -1,7 +1,7 @@
 import Foundation
 
 /// System prompt for the cleanup pass. Murmur's quality lives here, so treat edits like code changes and
-/// check them against the eval (`MurmurEval run`). `MurmurEval --prompt <file>` tries a draft without a rebuild.
+/// check them against the eval (`murmur-eval run`, in rust/). `murmur-eval --prompt <file>` tries a draft without a rebuild.
 public enum CleanupPrompt {
     /// What the model returns when there's nothing to type (see the Output section below).
     public static let emptyMarker = "<empty/>"