ci(go-lint): golangci-lint v1.64.8 (go1.24) + new-from-merge-base (#32)

ai-compliance-sdk/.golangci.yml

@@ -55,8 +55,7 @@ linters-settings:
     rules:
       - name: exported
         arguments:
-          - checkPrivateReceivers: false
-          - disableStutteringCheck: true
+          - disableStutteringCheck
       - name: error-return
       - name: increment-decrement
       - name: var-declaration
@@ -83,6 +82,6 @@ issues:
   max-issues-per-linter: 50
   max-same-issues: 5
 
-  # New code only: don't fail on pre-existing issues in files we haven't touched.
-  # Remove this once a clean baseline is established.
-  new: false
+  # New code only: lint lines changed vs main, so pre-existing debt doesn't fail CI.
+  # Needs the go-lint job to clone with a local `main` ref (see .gitea/workflows/ci.yaml).
+  new-from-merge-base: main