chore: declare and check MSRV

Author: jamadeo

.github/workflows/ci.yml

@@ -205,6 +205,28 @@ jobs:
     - name: Spell Check Repo
       uses: crate-ci/typos@master
 
+  msrv:
+    name: Check MSRV
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+
+      - name: Read MSRV from Cargo.toml
+        run: |
+          MSRV=$(cargo metadata --no-deps --format-version 1 \
+            | jq -r '.packages[] | select(.name == "rmcp") | .rust_version')
+          echo "MSRV=$MSRV" >> "$GITHUB_ENV"
+
+      - name: Install MSRV Rust
+        uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ env.MSRV }}
+
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Check default workspace members with MSRV
+        run: cargo +${{ env.MSRV }} check --all-targets --all-features
+
   test:
     name: Run Tests
     runs-on: ubuntu-latest

Cargo.toml

@@ -9,6 +9,7 @@ rmcp-macros = { version = "2.2.0", path = "./crates/rmcp-macros" }
 
 [workspace.package]
 edition = "2024"
+rust-version = "1.88"
 version = "2.2.0"
 authors = ["4t145 <u4t145@163.com>"]
 license = "Apache-2.0"

clippy.toml

@@ -1,3 +1,2 @@
-msrv = "1.85"
 too-many-arguments-threshold = 10
 check-private-items = false

crates/rmcp-macros/Cargo.toml

@@ -5,6 +5,7 @@ name = "rmcp-macros"
 license = { workspace = true }
 version = { workspace = true }
 edition = { workspace = true }
+rust-version = { workspace = true }
 repository = { workspace = true }
 homepage = { workspace = true }
 readme = { workspace = true }

crates/rmcp/Cargo.toml

@@ -3,6 +3,7 @@ name = "rmcp"
 license = { workspace = true }
 version = { workspace = true }
 edition = { workspace = true }
+rust-version = { workspace = true }
 repository = { workspace = true }
 homepage = { workspace = true }
 readme = { workspace = true }

examples/transport/Cargo.toml

@@ -1,6 +1,7 @@
 [package]
 name = "transport"
 edition = { workspace = true }
+rust-version = { workspace = true }
 version = { workspace = true }
 authors = { workspace = true }
 license = { workspace = true }

examples/wasi/Cargo.toml

@@ -1,6 +1,7 @@
 [package]
 name = "wasi-mcp-example"
 edition = { workspace = true }
+rust-version = { workspace = true }
 version = { workspace = true }
 authors = { workspace = true }
 license = { workspace = true }