Split the UI crate into modules

.github/workflows/ci.yml

@@ -26,9 +26,11 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.99
         with:
-          components: clippy
+          # A pinned toolchain installs only what is listed here; @stable
+          # used to borrow rustfmt from the runner's preinstalled Rust.
+          components: clippy, rustfmt
 
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
@@ -94,7 +96,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.99
 
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2

.github/workflows/macos-signing-smoke.yml

@@ -41,7 +41,7 @@ jobs:
           fi
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.99
 
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2

.github/workflows/macos-smoke.yml

@@ -24,7 +24,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.99
 
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2

.github/workflows/prepare-release.yml

@@ -49,7 +49,7 @@ jobs:
           fi
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.99
 
       - name: Install cargo-edit
         uses: taiki-e/install-action@v2

.github/workflows/release.yml

@@ -41,7 +41,10 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.99
+        with:
+          # Release validation runs cargo fmt --check.
+          components: rustfmt
 
       # Intentionally NOT caching Rust dependencies on the release workflow:
       # release builds run once per tag and never benefit from a hot cache,

Cargo.toml

@@ -10,6 +10,7 @@ resolver = "3"
 
 [workspace.package]
 edition = "2024"
+rust-version = "1.99"
 license = "MIT OR Apache-2.0"
 version = "0.4.2"
 

README.md

@@ -440,7 +440,7 @@ into the project.
 ## Development
 
 See [DESIGN.md](./DESIGN.md) for the full architecture and design rules. To
-build from source you need a recent stable Rust toolchain. The wxDragon GUI
+build from source you need Rust 1.99 or newer. The wxDragon GUI
 feature on Windows additionally needs the Visual Studio C++ build tools, an
 LLVM `libclang.dll` discoverable through `LIBCLANG_PATH`, and Ninja on
 `PATH`.

crates/rabbit-cli/Cargo.toml

@@ -2,6 +2,7 @@
 name = "rabbit-cli"
 version.workspace = true
 edition.workspace = true
+rust-version.workspace = true
 license.workspace = true
 
 [dependencies]

crates/rabbit-core/Cargo.toml

@@ -2,6 +2,7 @@
 name = "rabbit-core"
 version.workspace = true
 edition.workspace = true
+rust-version.workspace = true
 license.workspace = true
 
 [dependencies]

crates/rabbit-core/src/artifact.rs

@@ -1604,7 +1604,6 @@ fn invalid_file_url(input: &str) -> RabbitError {
 #[cfg(test)]
 mod tests {
     use std::fs;
-    use std::io::{Read as _, Write as _};
     use std::net::TcpListener;
     use std::thread;
     use std::time::Duration;

crates/rabbit-core/src/reapack.rs

@@ -534,8 +534,10 @@ mod tests {
         let written = fs::read(&ini_path).unwrap();
         assert_eq!(&written[..2], &[0xFF, 0xFE], "UTF-16 LE BOM preserved");
         let units: Vec<u16> = written[2..]
-            .chunks_exact(2)
-            .map(|pair| u16::from_le_bytes([pair[0], pair[1]]))
+            .as_chunks::<2>()
+            .0
+            .iter()
+            .map(|pair| u16::from_le_bytes(*pair))
             .collect();
         let decoded = String::from_utf16(&units).unwrap();
         assert!(decoded.contains(&format!("remote1={}|{}|1|2", TEST_REPO_NAME, TEST_REPO_URL)));

crates/rabbit-core/src/text_file.rs

@@ -85,13 +85,11 @@ fn decode_bytes(bytes: Vec<u8>) -> DecodedTextFile {
 }
 
 fn decode_utf16(bytes: &[u8], unit_from_bytes: fn([u8; 2]) -> u16) -> String {
-    let mut units: Vec<u16> = bytes
-        .chunks_exact(2)
-        .map(|pair| unit_from_bytes([pair[0], pair[1]]))
-        .collect();
+    let (pairs, rest) = bytes.as_chunks::<2>();
+    let mut units: Vec<u16> = pairs.iter().map(|pair| unit_from_bytes(*pair)).collect();
     // A trailing odd byte means the file is malformed UTF-16; keep the byte
     // as its own unit rather than silently dropping it.
-    if let Some(&last) = bytes.chunks_exact(2).remainder().first() {
+    if let Some(&last) = rest.first() {
         units.push(u16::from(last));
     }
     String::from_utf16_lossy(&units)

crates/rabbit-platform/Cargo.toml

@@ -2,6 +2,7 @@
 name = "rabbit-platform"
 version.workspace = true
 edition.workspace = true
+rust-version.workspace = true
 license.workspace = true
 
 [dependencies]

crates/rabbit-ui-wxdragon/Cargo.toml

@@ -2,6 +2,7 @@
 name = "rabbit-ui-wxdragon"
 version.workspace = true
 edition.workspace = true
+rust-version.workspace = true
 license.workspace = true
 
 [features]