Add Rust 1.96.1 compatibility coverage

Author: eldryoth

.github/workflows/ci.yml

@@ -69,6 +69,41 @@ jobs:
       - name: Check SIMD feature bundles
         run: scripts/check_simd_feature_bundles.sh
 
+  rust-version-compat:
+    name: Rust compatibility (${{ matrix.toolchain }})
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    strategy:
+      fail-fast: false
+      matrix:
+        toolchain:
+          - 1.91.0
+          - 1.92.0
+          - 1.93.0
+          - 1.94.0
+          - 1.95.0
+          - 1.96.0
+          - 1.96.1
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Install Rust toolchain
+        run: rustup toolchain install ${{ matrix.toolchain }}
+
+      - name: Cache Rust build output
+        uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+          key: rust-${{ matrix.toolchain }}
+
+      - name: Check all features
+        run: cargo +${{ matrix.toolchain }} check --all-features
+
+      - name: Check no-default-features library
+        run: cargo +${{ matrix.toolchain }} check --no-default-features --lib
+
   platform:
     name: Platform tests (${{ matrix.os }})
     runs-on: ${{ matrix.os }}

README.md

@@ -136,7 +136,8 @@ and CWE mapping lives in [docs/SECURITY_CONTROLS.md](docs/SECURITY_CONTROLS.md).
 ## Rust Version Support
 
 The minimum supported Rust version is Rust `1.90.0`. New deployments should
-prefer the latest stable Rust; as of May 29, 2026, that is Rust `1.96.0`.
+prefer the latest tested stable Rust; as of July 2, 2026, this project tests
+through Rust `1.96.1`.
 
 Compatibility evidence for the `1.2.3` workspace:
 
@@ -149,6 +150,7 @@ Compatibility evidence for the `1.2.3` workspace:
 | `1.94.0` | ✓ `cargo check --all-features` |
 | `1.95.0` | ✓ `cargo check --all-features` |
 | `1.96.0` | ✓ `cargo check --all-features` |
+| `1.96.1` | ✓ `cargo check --all-features` |
 
 ## Install
 
@@ -1021,7 +1023,7 @@ assert_eq!(&encoded[..written], b"aGVsbG8");
 Security commitments:
 
 - Stable Rust first. Current MSRV toolchain pin: Rust `1.90.0`. New deployments
-  should prefer the latest stable Rust, currently Rust `1.96.0`.
+  should prefer the latest tested stable Rust, currently Rust `1.96.1`.
 - `no_std` core by default.
 - Scalar encode/decode remains safe Rust.
 - Audited unsafe helpers in `src/cleanup.rs` perform volatile best-effort