fix: move checksum to HTTP opts, fix mismatch retry, scope get_download_speed to aggregate-only

pkg/base/model.go

@@ -124,11 +124,6 @@ type FileInfo struct {
 	Req *Request `json:"req"`
 }
 
-type ChecksumOption struct {
-	Algorithm string `json:"algorithm"` // "md5" | "sha1" | "sha256"
-	Expected  string `json:"expected"`  // hex-encoded expected hash
-}
-
 // Options for download
 type Options struct {
 	// Download file name
@@ -141,8 +136,6 @@ type Options struct {
 	SelectFiles []int `json:"selectFiles"`
 	// Extra info for specific fetcher
 	Extra any `json:"extra"`
-	// Checksum verification option
-	Checksum *ChecksumOption `json:"checksum,omitempty"`
 }
 
 func (o *Options) InitSelectFiles(fileSize int) {

pkg/base/model_test.go

@@ -435,35 +435,3 @@ func TestDownloaderStoreConfig_Merge(t *testing.T) {
 		})
 	}
 }
-
-func TestOptions_Checksum(t *testing.T) {
-	opts := &Options{
-		Name: "test.zip",
-		Path: "/downloads",
-		Checksum: &ChecksumOption{
-			Algorithm: "sha256",
-			Expected:  "abcdef1234567890",
-		},
-	}
-
-	cloned := opts.Clone()
-	if cloned.Checksum == nil {
-		t.Fatal("expected cloned options to have non-nil Checksum")
-	}
-	if cloned.Checksum.Algorithm != "sha256" || cloned.Checksum.Expected != "abcdef1234567890" {
-		t.Fatalf("cloned checksum mismatch: got %+v", cloned.Checksum)
-	}
-
-	// Verify deep clone isolation
-	cloned.Checksum.Expected = "modified"
-	if opts.Checksum.Expected != "abcdef1234567890" {
-		t.Fatal("modifying cloned checksum affected original options")
-	}
-
-	// Verify nil checksum options clone
-	optsNil := &Options{Name: "nil_check.zip"}
-	clonedNil := optsNil.Clone()
-	if clonedNil.Checksum != nil {
-		t.Fatal("expected nil checksum in cloned options")
-	}
-}