Update golangci-lint and tighten lint config (#190)

Bump `golangci-lint` to v2.12.2 and pin `govulncheck` to v1.3.0. Align `.golangci.yml` with the gitea repo's config: enable `revive` `var-naming` (with `skip-package-name-checks`) and drop the test-file exclusion for `errcheck`/`staticcheck`/`unparam`. Fix the now-surfaced `errcheck` violations in test handlers by discarding return values to match the existing codebase pattern.

---
This PR was written with the help of Claude Opus 4.7

Reviewed-on: https://gitea.com/gitea/gitea-mcp/pulls/190
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: silverwind <me@silverwind.io>
Co-committed-by: silverwind <me@silverwind.io>

.golangci.yml

@@ -71,7 +71,10 @@ linters:
         - name: unexported-return
         - name: var-declaration
         - name: var-naming
-          disabled: true
+          arguments:
+            - [] # AllowList - do not remove as args for the rule are positional and won't work without lists first
+            - [] # DenyList
+            - - skip-package-name-checks: true
     staticcheck:
       checks:
         - all
@@ -91,12 +94,6 @@ linters:
       - common-false-positives
       - legacy
       - std-error-handling
-    rules:
-      - linters:
-          - errcheck
-          - staticcheck
-          - unparam
-        path: _test\.go
 issues:
   max-issues-per-linter: 0
   max-same-issues: 0

Makefile

@@ -3,8 +3,8 @@ EXECUTABLE := gitea-mcp
 VERSION ?= $(shell git describe --tags --always | sed 's/-/+/' | sed 's/^v//')
 LDFLAGS := -X "main.Version=$(VERSION)"
 
-GOLANGCI_LINT_PACKAGE ?= github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.11.4
+GOLANGCI_LINT_PACKAGE ?= github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.12.2
-GOVULNCHECK_PACKAGE ?= golang.org/x/vuln/cmd/govulncheck@v1
+GOVULNCHECK_PACKAGE ?= golang.org/x/vuln/cmd/govulncheck@v1.3.0
 
 .PHONY: help
 help: ## print this help message

operation/packages/packages_test.go

@@ -26,7 +26,7 @@ func TestPackageReadList(t *testing.T) {
 		}
 		mu.Unlock()
 		w.Header().Set("Content-Type", "application/json")
-		w.Write([]byte(`[{"id":1,"type":"container","name":"myrepo/myimage","version":"v1.0.0","html_url":"http://example.com","created_at":"2025-01-01T00:00:00Z","owner":{"login":"test-org"},"creator":{"login":"admin"}}]`))
+		_, _ = w.Write([]byte(`[{"id":1,"type":"container","name":"myrepo/myimage","version":"v1.0.0","html_url":"http://example.com","created_at":"2025-01-01T00:00:00Z","owner":{"login":"test-org"},"creator":{"login":"admin"}}]`))
 	}))
 	defer srv.Close()
 
@@ -128,7 +128,7 @@ func TestPackageReadListVersions(t *testing.T) {
 		}
 		mu.Unlock()
 		w.Header().Set("Content-Type", "application/json")
-		w.Write([]byte(`[{"id":1,"type":"container","name":"myrepo/myimage","version":"v1.0.0"},{"id":2,"type":"container","name":"myrepo/myimage","version":"v2.0.0"}]`))
+		_, _ = w.Write([]byte(`[{"id":1,"type":"container","name":"myrepo/myimage","version":"v1.0.0"},{"id":2,"type":"container","name":"myrepo/myimage","version":"v2.0.0"}]`))
 	}))
 	defer srv.Close()
 
@@ -195,7 +195,7 @@ func TestPackageReadGet(t *testing.T) {
 		}
 		mu.Unlock()
 		w.Header().Set("Content-Type", "application/json")
-		w.Write([]byte(`{"id":1,"type":"container","name":"myrepo/myimage","version":"v1.0.0","html_url":"http://example.com","created_at":"2025-01-01T00:00:00Z","owner":{"login":"test-org"}}`))
+		_, _ = w.Write([]byte(`{"id":1,"type":"container","name":"myrepo/myimage","version":"v1.0.0","html_url":"http://example.com","created_at":"2025-01-01T00:00:00Z","owner":{"login":"test-org"}}`))
 	}))
 	defer srv.Close()
 

operation/wiki/wiki_test.go

@@ -32,10 +32,10 @@ func TestWikiWriteBase64Encoding(t *testing.T) {
 			var gotBody map[string]string
 			srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 				body, _ := io.ReadAll(r.Body)
-				json.Unmarshal(body, &gotBody)
+				_ = json.Unmarshal(body, &gotBody)
 				w.Header().Set("Content-Type", "application/json")
 				w.WriteHeader(http.StatusOK)
-				w.Write([]byte(`{"title":"test"}`))
+				_, _ = w.Write([]byte(`{"title":"test"}`))
 			}))
 			defer srv.Close()
 

pkg/gitea/redirect_test.go

@@ -99,7 +99,7 @@ func TestDoJSON_GETRedirectFollowed(t *testing.T) {
 	mux.HandleFunc("GET /api/v1/repos/owner/new-name/pulls/1", func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(http.StatusOK)
-		json.NewEncoder(w).Encode(map[string]any{"id": 1, "title": "found"})
+		_ = json.NewEncoder(w).Encode(map[string]any{"id": 1, "title": "found"})
 	})
 	srv := httptest.NewServer(mux)
 	defer srv.Close()