Replace custom Go formatter with golangci-lint fmt (#37194)

Use `golangci-lint fmt` to format code, replacing the previous custom
formatter tool. https://github.com/daixiang0/gci is used to order the
imports.

`make fmt` performs ~13% faster while consuming ~57% less cpu while
formatting for me.

`GOFUMPT_PACKAGE` is gone because it's using the builtin package from
golangci-lint.

Co-authored-by: Claude (claude-opus-4-6) <noreply@anthropic.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

models/db/engine.go

@@ -11,11 +11,11 @@ import (
 	"reflect"
 	"strings"
 
-	"xorm.io/xorm"
-
 	_ "github.com/go-sql-driver/mysql"  // Needed for the MySQL driver
 	_ "github.com/lib/pq"               // Needed for the Postgresql driver
 	_ "github.com/microsoft/go-mssqldb" // Needed for the MSSQL driver
+
+	"xorm.io/xorm"
 )
 
 var (

models/migrations/v1_19/v233.go

@@ -9,7 +9,6 @@ import (
 	"code.gitea.io/gitea/modules/json"
 	"code.gitea.io/gitea/modules/secret"
 	"code.gitea.io/gitea/modules/setting"
-	api "code.gitea.io/gitea/modules/structs"
 
 	"xorm.io/builder"
 	"xorm.io/xorm"
@@ -129,11 +128,11 @@ func AddHeaderAuthorizationEncryptedColWebhook(x *xorm.Engine) error {
 	}
 
 	type MatrixPayloadSafe struct {
-		Body          string               `json:"body"`
-		MsgType       string               `json:"msgtype"`
-		Format        string               `json:"format"`
-		FormattedBody string               `json:"formatted_body"`
-		Commits       []*api.PayloadCommit `json:"io.gitea.commits,omitempty"`
+		Body          string     `json:"body"`
+		MsgType       string     `json:"msgtype"`
+		Format        string     `json:"format"`
+		FormattedBody string     `json:"formatted_body"`
+		Commits       json.Value `json:"io.gitea.commits,omitempty"`
 	}
 	type MatrixPayloadUnsafe struct {
 		MatrixPayloadSafe

models/migrations/v1_26/v326.go

@@ -13,7 +13,6 @@ import (
 	"code.gitea.io/gitea/modules/json"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
-	api "code.gitea.io/gitea/modules/structs"
 	webhook_module "code.gitea.io/gitea/modules/webhook"
 
 	"xorm.io/xorm"
@@ -59,6 +58,29 @@ type migrationCommitStatus struct {
 	TargetURL string
 }
 
+// Frozen subsets of modules/structs payload types, decoded from stored
+// action_run.event_payload values. Inlined so the migration is insulated
+// from future field changes in modules/structs.
+type migrationPayloadCommit struct {
+	ID string `json:"id"`
+}
+
+type migrationPushPayload struct {
+	HeadCommit *migrationPayloadCommit `json:"head_commit"`
+}
+
+type migrationPRBranchInfo struct {
+	Sha string `json:"sha"`
+}
+
+type migrationPullRequest struct {
+	Head *migrationPRBranchInfo `json:"head"`
+}
+
+type migrationPullRequestPayload struct {
+	PullRequest *migrationPullRequest `json:"pull_request"`
+}
+
 type commitSHAAndRuns struct {
 	commitSHA string
 	runs      map[int64]*migrationActionRun
@@ -292,22 +314,22 @@ func getCommitStatusCommitID(run *migrationActionRun) (string, error) {
 	}
 }
 
-func getPushEventPayload(run *migrationActionRun) (*api.PushPayload, error) {
+func getPushEventPayload(run *migrationActionRun) (*migrationPushPayload, error) {
 	if run.Event != webhook_module.HookEventPush {
 		return nil, fmt.Errorf("event %s is not a push event", run.Event)
 	}
-	var payload api.PushPayload
+	var payload migrationPushPayload
 	if err := json.Unmarshal([]byte(run.EventPayload), &payload); err != nil {
 		return nil, err
 	}
 	return &payload, nil
 }
 
-func getPullRequestEventPayload(run *migrationActionRun) (*api.PullRequestPayload, error) {
+func getPullRequestEventPayload(run *migrationActionRun) (*migrationPullRequestPayload, error) {
 	if !run.Event.IsPullRequest() && !run.Event.IsPullRequestReview() {
 		return nil, fmt.Errorf("event %s is not a pull request event", run.Event)
 	}
-	var payload api.PullRequestPayload
+	var payload migrationPullRequestPayload
 	if err := json.Unmarshal([]byte(run.EventPayload), &payload); err != nil {
 		return nil, err
 	}

models/repo.go

@@ -9,8 +9,6 @@ import (
 	"strconv"
 	"strings"
 
-	_ "image/jpeg" // Needed for jpeg support
-
 	"code.gitea.io/gitea/models/db"
 	issues_model "code.gitea.io/gitea/models/issues"
 	repo_model "code.gitea.io/gitea/models/repo"
@@ -18,6 +16,8 @@ import (
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/log"
 
+	_ "image/jpeg" // Needed for jpeg support
+
 	"xorm.io/builder"
 )
 

models/user/user.go

@@ -20,8 +20,6 @@ import (
 	"time"
 	"unicode"
 
-	_ "image/jpeg" // Needed for jpeg support
-
 	"code.gitea.io/gitea/models/auth"
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/modules/auth/openid"
@@ -39,6 +37,8 @@ import (
 	"code.gitea.io/gitea/modules/util"
 	"code.gitea.io/gitea/modules/validation"
 
+	_ "image/jpeg" // Needed for jpeg support
+
 	"golang.org/x/text/runes"
 	"golang.org/x/text/transform"
 	"golang.org/x/text/unicode/norm"