chore(lint): scope revive var-naming exclusion to specific packages

Replace global var-naming rule disable with targeted exclusions
for packages that conflict with Go stdlib names: pkg/errors,
pkg/llm/context, pkg/sort, and pkg/test/http.

Signed-off-by: Akshay Pant <akshay.akshaypant@gmail.com>

Author: theakshaypant

.golangci.yml

@@ -90,6 +90,22 @@ linters:
         path: _test\.go
       - path: pkg/resolve/resolve.go
         text: don't use `init` function
+      - linters:
+          - revive
+        path: pkg/errors/
+        text: "var-naming"
+      - linters:
+          - revive
+        path: pkg/llm/context/
+        text: "var-naming"
+      - linters:
+          - revive
+        path: pkg/sort/
+        text: "var-naming"
+      - linters:
+          - revive
+        path: pkg/test/http/
+        text: "var-naming"
     paths:
       - vendor
       - pkg/provider/gitea/structs