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/app-server/src/message_processor.rs

@@ -1289,7 +1289,7 @@ impl MessageProcessor {
                 .clients_revoke(params)
                 .await
                 .map(|response| Some(response.into())),
-            ClientRequest::ConfigRequirementsRead { params: _, .. } => self
+            ClientRequest::ConfigRequirementsRead { .. } => self
                 .config_processor
                 .config_requirements_read()
                 .await
@@ -1358,7 +1358,7 @@ impl MessageProcessor {
                 .model_provider_config_write(params)
                 .await
                 .map(|r| Some(r.into())),
-            ClientRequest::ModelProviderCapabilitiesRead { params: _, .. } => self
+            ClientRequest::ModelProviderCapabilitiesRead { .. } => self
                 .config_processor
                 .model_provider_capabilities_read()
                 .await
@@ -1820,7 +1820,7 @@ impl MessageProcessor {
             ClientRequest::ThreadTimelineList { params, .. } => {
                 self.thread_processor.thread_timeline_list(params).await
             }
-            ClientRequest::ThreadRealtimeListVoices { params: _, .. } => {
+            ClientRequest::ThreadRealtimeListVoices { .. } => {
                 self.turn_processor.thread_realtime_list_voices().await
             }
             ClientRequest::ReviewStart { params, .. } => {