ci: add go vet step and harden install script checksum warnings

Add go vet lint step before tests in CI workflow. Add warning messages when checksum file is unavailable or binary checksum not found in install.sh.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

Author: fullstackjam

.github/workflows/test.yml

@@ -26,6 +26,9 @@ jobs:
         with:
           go-version-file: "go.mod"
 
+      - name: Vet
+        run: go vet ./...
+
       - name: Run all tests
         run: make test-all
 

go.mod

@@ -36,7 +36,6 @@ require (
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	github.com/stretchr/objx v0.5.3 // indirect
 	golang.org/x/sync v0.8.0 // indirect
 	golang.org/x/sys v0.40.0 // indirect
 	golang.org/x/text v0.18.0 // indirect

go.sum

@@ -59,8 +59,6 @@ github.com/spf13/cobra v1.8.1 h1:e5/vxKd/rZsfSJMUX1agtjeTDf+qv1/JdBF8gg5k9ZM=
 github.com/spf13/cobra v1.8.1/go.mod h1:wHxEcudfqmLYa8iTfL+OuZPbBZkmvliBWKIezN3kD9Y=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
-github.com/stretchr/objx v0.5.3 h1:jmXUvGomnU1o3W/V5h2VEradbpJDwGrzugQQvL0POH4=
-github.com/stretchr/objx v0.5.3/go.mod h1:rDQraq+vQZU7Fde9LOZLr8Tax6zZvy4kuNKF+QYS+U0=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=

scripts/install.sh

@@ -97,13 +97,15 @@ verify_checksum() {
 
     local checksums
     if ! checksums=$(curl -fsSL "$checksum_url" 2>/dev/null); then
+        echo "Warning: Could not download checksums file. Skipping verification."
         return 0
     fi
 
     local expected_checksum
     expected_checksum=$(echo "$checksums" | grep "${BINARY_NAME}-${os}-${arch}" | awk '{print $1}')
 
     if [[ -z "$expected_checksum" ]]; then
+        echo "Warning: No checksum found for ${BINARY_NAME}-${os}-${arch}. Skipping verification."
         return 0
     fi