Install Rust clippy component in workflows

- Add 'rustup component add clippy' to both workflows
- Resolves 'cargo-clippy is not installed' error
- Now workflows can run clippy linting after successful compilation
- Maintains all previous improvements (file command, container fixes)

.forgejo/workflows/build-artifacts.yml

@@ -60,6 +60,9 @@ jobs:
           
           # Install additional build dependencies
           apt install -y libssl-dev libsystemd-dev file
+          
+          # Install Rust clippy component
+          rustup component add clippy
 
       - name: Checkout repository manually
         run: |

.forgejo/workflows/simple-build.yml

@@ -23,6 +23,9 @@ jobs:
           apt update -y
           apt install -y git curl pkg-config libssl-dev libsystemd-dev build-essential file
           
+          # Install Rust clippy component
+          rustup component add clippy
+          
           # Rust 1.89.0 is already installed in rust:1.89-slim-trixie
           # No need for rustup or toolchain management!
           echo "✅ Using pre-installed Rust from official image:"