Unify errors

backend/internal/crypto/crypto.go

@@ -5,14 +5,13 @@ import (
 	"crypto/cipher"
 	"crypto/rand"
 	"encoding/base64"
-	"errors"
 	"fmt"
 	"io"
 )
 
 var (
-	ErrKeyRequired    = errors.New("encryption key is required")
-	ErrInvalidKeySize = errors.New("encryption key must be 32 bytes (256 bits) when decoded")
+	ErrKeyRequired    = fmt.Errorf("encryption key is required")
+	ErrInvalidKeySize = fmt.Errorf("encryption key must be 32 bytes (256 bits) when decoded")
 )
 
 type Crypto struct {
@@ -102,7 +101,7 @@ func (c *Crypto) Decrypt(ciphertext string) (string, error) {
 
 	nonceSize := gcm.NonceSize()
 	if len(data) < nonceSize {
-		return "", errors.New("ciphertext too short")
+		return "", fmt.Errorf("ciphertext too short")
 	}
 
 	nonce, ciphertextBytes := data[:nonceSize], data[nonceSize:]

backend/internal/filesystem/files.go

@@ -3,7 +3,6 @@
 package filesystem
 
 import (
-	"errors"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -114,7 +113,7 @@ func (fs *FileSystem) FindFileByName(userID, workspaceID int, filename string) (
 	}
 
 	if len(foundPaths) == 0 {
-		return nil, errors.New("file not found")
+		return nil, fmt.Errorf("file not found")
 	}
 
 	return foundPaths, nil
@@ -171,7 +170,7 @@ func (fs *FileSystem) GetFileStats(userID, workspaceID int) (*FileCountStats, er
 
 	// Check if workspace exists
 	if _, err := os.Stat(workspacePath); os.IsNotExist(err) {
-		return nil, errors.New("workspace directory does not exist")
+		return nil, fmt.Errorf("workspace directory does not exist")
 	}
 
 	return fs.countFilesInPath(workspacePath)

backend/internal/filesystem/git.go

@@ -1,7 +1,7 @@
 package filesystem
 
 import (
-	"errors"
+	"fmt"
 	"novamd/internal/gitutils"
 )
 
@@ -29,7 +29,7 @@ func (fs *FileSystem) DisableGitRepo(userID, workspaceID int) {
 func (fs *FileSystem) StageCommitAndPush(userID, workspaceID int, message string) error {
 	repo, ok := fs.getGitRepo(userID, workspaceID)
 	if !ok {
-		return errors.New("git settings not configured for this workspace")
+		return fmt.Errorf("git settings not configured for this workspace")
 	}
 
 	if err := repo.Commit(message); err != nil {
@@ -43,7 +43,7 @@ func (fs *FileSystem) StageCommitAndPush(userID, workspaceID int, message string
 func (fs *FileSystem) Pull(userID, workspaceID int) error {
 	repo, ok := fs.getGitRepo(userID, workspaceID)
 	if !ok {
-		return errors.New("git settings not configured for this workspace")
+		return fmt.Errorf("git settings not configured for this workspace")
 	}
 
 	return repo.Pull()