feat: Implement direct upload functionality for desktop client releases

- Added new endpoints for initiating and completing direct uploads of desktop client packages.
- Introduced request and response structures for direct upload operations.
- Enhanced the upload process to support SHA256 and Content-MD5 validation.
- Updated the frontend to reflect changes in upload button states and progress indicators.
- Modified object storage clients to support presigned PUT URLs with content type and MD5 headers.
- Added tests for direct upload functionality and ensured existing upload processes remain intact.

server/internal/shared/objectstorage/minio.go

@@ -5,6 +5,7 @@ import (
 	"context"
 	"fmt"
 	"io"
+	"net/http"
 	"net/url"
 	"strings"
 	"time"
@@ -290,6 +291,51 @@ func (c *minioClient) DownloadURL(objectKey string) (string, error) {
 	return u.String(), nil
 }
 
+func (c *minioClient) PresignedPutURL(
+	ctx context.Context,
+	objectKey string,
+	contentType string,
+	contentMD5Base64 string,
+	ttl time.Duration,
+) (*PresignedPutResult, error) {
+	if err := c.Validate(); err != nil {
+		return nil, err
+	}
+	objectKey = normalizeObjectKeyPath(objectKey)
+	if objectKey == "" {
+		return nil, fmt.Errorf("object key is required")
+	}
+	if ttl <= 0 {
+		ttl = c.cfg.SignedURLTTL
+	}
+	if ttl <= 0 {
+		ttl = 30 * time.Minute
+	}
+
+	headers := http.Header{}
+	if contentType = strings.TrimSpace(contentType); contentType != "" {
+		headers.Set("Content-Type", contentType)
+	}
+	if contentMD5Base64 = strings.TrimSpace(contentMD5Base64); contentMD5Base64 != "" {
+		headers.Set("Content-MD5", contentMD5Base64)
+	}
+	var u *url.URL
+	var err error
+	if len(headers) > 0 {
+		u, err = c.client.PresignHeader(ctx, http.MethodPut, c.bucket, objectKey, ttl, nil, headers)
+	} else {
+		u, err = c.client.PresignedPutObject(ctx, c.bucket, objectKey, ttl)
+	}
+	if err != nil {
+		return nil, fmt.Errorf("presign minio put url: %w", err)
+	}
+	return &PresignedPutResult{
+		URL:       u.String(),
+		Headers:   headers,
+		ExpiresAt: time.Now().UTC().Add(ttl),
+	}, nil
+}
+
 func (c *minioClient) List(ctx context.Context, in ListInput) (*ListResult, error) {
 	if err := c.Validate(); err != nil {
 		return nil, err