fix: inaccruate 401 & sql busy error (#679)

* fix inaccruate 401 error on SQL db error

* init golangci-lint config

* linter autofix

* testify auto fixes

* fix sqlite busy errors

* fix naming

* more linter errors

* fix rest of linter issues

Former-commit-id: e8449b3a7363a6cfd5bc6151609e6d2d94b4f7d8

backend/pkgs/cgofreesqlite/sqlite.go

@@ -1,4 +1,4 @@
-// sqlite package provides a CGO free implementation of the sqlite3 driver. This wraps the
+// Package cgofreesqlite package provides a CGO free implementation of the sqlite3 driver. This wraps the
 // modernc.org/sqlite driver and adds the PRAGMA foreign_keys = ON; statement to the connection
 // initialization as well as registering the driver with the sql package as "sqlite3" for compatibility
 // with entgo.io
@@ -35,6 +35,6 @@ func (d CGOFreeSqliteDriver) Open(name string) (conn driver.Conn, err error) {
 	return conn, err
 }
 
-func init() {
+func init() { //nolint:gochecknoinits
 	sql.Register("sqlite3", CGOFreeSqliteDriver{Driver: &sqlite.Driver{}})
 }

backend/pkgs/faker/random.go

@@ -1,3 +1,4 @@
+// Package faker provides a simple interface for generating fake data for testing.
 package faker
 
 import (

backend/pkgs/hasher/doc.go

@@ -0,0 +1,2 @@
+// Package hasher provides a simple interface for hashing and verifying passwords.
+package hasher

backend/pkgs/hasher/password.go

@@ -9,7 +9,7 @@ import (
 
 var enabled = true
 
-func init() {
+func init() { // nolint: gochecknoinits
 	disableHas := os.Getenv("UNSAFE_DISABLE_PASSWORD_PROJECTION") == "yes_i_am_sure"
 
 	if disableHas {

backend/pkgs/mailer/mailer.go

@@ -1,3 +1,4 @@
+// Package mailer provides a simple mailer for sending emails.
 package mailer
 
 import (

backend/pkgs/mailer/mailer_test.go

@@ -5,7 +5,7 @@ import (
 	"os"
 	"testing"
 
-	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 const (
@@ -59,5 +59,5 @@ func Test_Mailer(t *testing.T) {
 
 	err = mailer.Send(msg)
 
-	assert.Nil(t, err)
+	require.NoError(t, err)
 }

backend/pkgs/pathlib/pathlib.go

@@ -1,3 +1,4 @@
+// Package pathlib provides a way to safely create a file path without overwriting any existing files.
 package pathlib
 
 import (
@@ -14,7 +15,7 @@ var dirReader dirReaderFunc = func(directory string) []string {
 	if err != nil {
 		return nil
 	}
-	defer f.Close()
+	defer func() { _ = f.Close() }()
 
 	names, err := f.Readdirnames(-1)
 	if err != nil {

backend/pkgs/set/set.go

@@ -1,3 +1,4 @@
+// Package set provides a simple set implementation.
 package set
 
 type key interface {