Add rust lint CI job.

.forgejo/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
         uses: https://codeberg.org/wackbyte/rust-toolchain@trunk
         with:
           toolchain: stable
-          components: rustfmt, clippy
+          components: rustfmt, clippy, rust-src
       - name: Cache
         uses: https://github.com/Swatinem/rust-cache@v2
         with:

rust-toolchain.toml

@@ -1,3 +1,3 @@
 [toolchain]
 channel = "nightly-2025-10-02"
-components = ["rustfmt", "rust-analyzer"]
+components = ["rustfmt", "rust-analyzer", "clippy", "rust-src"]