feat(files): implement file storage functionality with save, load, and list operations

internal/metadata/normalize_test.go

@@ -4,6 +4,8 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/google/uuid"
+
 	"git.warky.dev/wdevs/amcs/internal/config"
 	thoughttypes "git.warky.dev/wdevs/amcs/internal/types"
 )
@@ -79,3 +81,24 @@ func TestMergeAddsPatchAndNormalizes(t *testing.T) {
 		t.Fatalf("Topics len = %d, want 2", len(got.Topics))
 	}
 }
+
+func TestNormalizeDedupesAttachmentsByFileID(t *testing.T) {
+	id := uuid.New()
+
+	got := Normalize(thoughttypes.ThoughtMetadata{
+		Attachments: []thoughttypes.ThoughtAttachment{
+			{FileID: id, Name: " one.png ", MediaType: " image/png ", Kind: " image ", SizeBytes: 12, SHA256: " abc "},
+			{FileID: id, Name: "two.png", MediaType: "image/png", Kind: "image", SizeBytes: 99, SHA256: "def"},
+		},
+	}, testCaptureConfig())
+
+	if len(got.Attachments) != 1 {
+		t.Fatalf("Attachments len = %d, want 1", len(got.Attachments))
+	}
+	if got.Attachments[0].Name != "one.png" {
+		t.Fatalf("Attachment name = %q, want one.png", got.Attachments[0].Name)
+	}
+	if got.Attachments[0].Kind != "image" {
+		t.Fatalf("Attachment kind = %q, want image", got.Attachments[0].Kind)
+	}
+}