Update ci.yml

Author: collapsinghierarchy

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
     env:
       # Ensure we build with the repo’s Go; helpful if using toolchain directives.
       GOTOOLCHAIN: local
-      # Default: run vuln scan in CI (internet is available here).
+      # Default: run vuln scan in CI.
       SKIP_VULN: "0"
     steps:
       - name: Checkout
@@ -27,7 +27,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: "1.24.x"
+          go-version-file: go.mod
           cache: false  # we’ll use explicit caches below
 
       - name: Cache Go modules
@@ -42,13 +42,16 @@ jobs:
         run: |
           go version
           go env
+      
+      - name: Clean Go build cache (defensive)
+        run: go clean -cache -testcache
 
       - name: Install golangci-lint (built with local toolchain)
         run: |
           GOBIN=$HOME/.local/bin GOTOOLCHAIN=local go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.61.0
           echo "$HOME/.local/bin" >> $GITHUB_PATH
           golangci-lint version
-
+              
       - name: Make check (fmt, tidy, lint, unit tests, govulncheck)
         run: make check
 
@@ -74,7 +77,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: "1.24.x"
+          go-version-file: go.mod
           cache: false
 
       - name: Cache Go modules
@@ -84,6 +87,9 @@ jobs:
           key: ${{ runner.os }}-gomod-${{ hashFiles('**/go.sum') }}
           restore-keys: |
             ${{ runner.os }}-gomod-
+      
+      - name: Clean Go build cache (defensive)
+        run: go clean -cache -testcache
 
       - name: Install golangci-lint (for make lint, if used)
         run: |