Upgrade the Rust toolchain to 1.99.1 (#61205)

## What changed

- Update the workspace, Bazel toolchain and lockfile, CI and release workflows, and Windows setup script from Rust `1.95.0` to `1.99.1`.
- Adapt Rust code to the updated toolchain and Clippy lints, including `try_update` for atomics, `as_chunks` for fixed-size slices, and targeted allowances for generated tonic services.
- Refresh the halfwidth sound mark rendering snapshot to use literal characters in debug output.

GitOrigin-RevId: 5852029f687436dc814c2bca68141ee1f4a67d49

codex-rs/tui/src/app/tests/session_lifecycle_requests.rs

@@ -2825,7 +2825,8 @@ async fn older_external_server_starts_without_unsupported_dynamic_tools_or_histo
 
     let starts = recorded_params(&requests, "thread/start");
     assert_eq!(starts.len(), 6);
-    for attempts in starts.chunks_exact(3) {
+    const ATTEMPTS_PER_START: usize = 3;
+    for attempts in starts.as_chunks::<ATTEMPTS_PER_START>().0 {
         assert_eq!(attempts[0]["dynamicTools"][0]["type"], "namespace");
         assert_eq!(attempts[0]["historyMode"], "paginated");
         assert_eq!(attempts[1]["dynamicTools"], serde_json::Value::Null);

codex-rs/tui/src/bottom_pane/async_questions/layout.rs

@@ -52,7 +52,7 @@ impl AsyncQuestions {
         let mut spacer_after_input = 0;
         let progress_height;
         let footer_lines;
-        let notes_height;
+        let mut notes_height = 0;
 
         if has_options {
             let min_options_height = remaining.min(1);
@@ -71,7 +71,6 @@ impl AsyncQuestions {
             spacer_after_question = u16::from(remaining > 0);
             remaining -= spacer_after_question;
             options_height += remaining.min(full_options_height.saturating_sub(options_height));
-            notes_height = 0;
         } else {
             // Freeform answers take their preferred input height before hints and progress.
             let preferred_notes = self

codex-rs/tui/src/bottom_pane/list_selection_view.rs

@@ -1119,7 +1119,7 @@ impl ListSelectionView {
             None
         }
         .or_else(|| self.footer_note.clone());
-        let mut lines = note.map(&wrap).unwrap_or_default();
+        let mut lines = note.map(wrap).unwrap_or_default();
         if self.reserve_result_rows && show_selected_description {
             let height = self
                 .items

codex-rs/tui/src/bottom_pane/request_user_input/snapshots/codex_tui__bottom_pane__request_user_input__render__tests__request_user_input_halfwidth_sound_marks_truncation.snap

@@ -22,12 +22,12 @@ Buffer {
 [
     Line::from_iter([
         Span::from("ab").bold(),
-        Span::from("ｶ\u{ff9e}").cyan(),
+        Span::from("ｶﾞ").cyan(),
         Span::from("…").cyan(),
     ]),
     Line::from_iter([
         Span::from("xy").bold(),
-        Span::from("ﾊ\u{ff9f}").magenta(),
+        Span::from("ﾊﾟ").magenta(),
         Span::from("…").magenta(),
     ]),
 ]

codex-rs/tui/src/pager_overlay.rs

@@ -149,8 +149,10 @@ fn render_navigation_hints(area: Rect, buf: &mut Buffer, keymap: &PagerKeymap) {
         ("jump_top", &keymap.jump_top),
         ("jump_bottom", &keymap.jump_bottom),
     ];
-    let hints = actions
-        .chunks_exact(2)
+    const ACTIONS_PER_HINT: usize = 2;
+    let (action_groups, _) = actions.as_chunks::<ACTIONS_PER_HINT>();
+    let hints = action_groups
+        .iter()
         .zip(["to scroll", "to page", "to jump"])
         .map(|(actions, description)| {
             (

codex-rs/tui/src/pets/sixel.rs

@@ -216,7 +216,8 @@ struct Palette {
 impl Palette {
     fn from_rgba(rgba: &[u8]) -> Self {
         let mut used = [false; PALETTE_COLOR_COUNT];
-        for pixel in rgba.chunks_exact(4) {
+        const RGBA_CHANNELS: usize = 4;
+        for pixel in rgba.as_chunks::<RGBA_CHANNELS>().0 {
             if pixel[3] < TRANSPARENT_ALPHA_THRESHOLD {
                 continue;
             }