feat: implement media image streaming capabilities

backend/internal/application/conversation/service_media_generation.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"encoding/base64"
+	"encoding/json"
 	"fmt"
 	"io"
 	"net/http"
@@ -33,6 +34,12 @@ const (
 
 const maxMediaImageEditInputImages = 16
 
+type mediaImageCapabilities struct {
+	Image struct {
+		Stream *bool `json:"stream"`
+	} `json:"image"`
+}
+
 // MediaImageInput 定义媒体图片任务的应用层入参。
 type MediaImageInput struct {
 	UserID                uint
@@ -301,7 +308,7 @@ func (s *Service) StreamMediaImage(ctx context.Context, input MediaImageInput) (
 		generateInput.ImageEditMask = maskPart
 	}
 	var output *llm.GenerateOutput
-	if llm.SupportsImageGenerationStream(routeConfig.Protocol, routeConfig.UpstreamModel) {
+	if mediaImageStreamEnabled(routeConfig.Protocol, routeConfig.UpstreamModel, route.ModelCapabilitiesJSON) {
 		output, err = s.llmClient.GenerateStream(ctx, routeConfig, generateInput, func(event llm.GenerateStreamEvent) error {
 			if event.Usage != (llm.Usage{}) && input.OnEvent != nil {
 				if streamErr := input.OnEvent("usage", map[string]interface{}{
@@ -556,6 +563,22 @@ func emitMediaImageDelta(onEvent func(string, map[string]interface{}) error, eve
 	})
 }
 
+func mediaImageStreamEnabled(protocol string, upstreamModel string, capabilitiesJSON string) bool {
+	return llm.SupportsImageGenerationStream(protocol, upstreamModel) && !mediaImageStreamExplicitlyDisabled(capabilitiesJSON)
+}
+
+func mediaImageStreamExplicitlyDisabled(capabilitiesJSON string) bool {
+	raw := strings.TrimSpace(capabilitiesJSON)
+	if raw == "" {
+		return false
+	}
+	var caps mediaImageCapabilities
+	if err := json.Unmarshal([]byte(raw), &caps); err != nil {
+		return false
+	}
+	return caps.Image.Stream != nil && !*caps.Image.Stream
+}
+
 // readGeneratedImage 读取上游图片结果，并统一校验为可保存的图片字节。
 // 上游临时 URL 只用于服务端下载，最终不会直接写入消息内容，避免长期依赖外部地址。
 func (s *Service) readGeneratedImage(ctx context.Context, image llm.GeneratedImage) ([]byte, string, error) {

backend/internal/application/conversation/service_media_generation_test.go

@@ -3,6 +3,8 @@ package conversation
 import (
 	"bytes"
 	"testing"
+
+	"github.com/DEEIX-AI/DEEIX-Chat/backend/internal/infra/llm"
 )
 
 func TestDetectGeneratedImageMIMERejectsNonImageBytes(t *testing.T) {
@@ -32,3 +34,57 @@ func TestStripBase64DataURLPrefix(t *testing.T) {
 		t.Fatalf("unexpected stripped data URL: %q", got)
 	}
 }
+
+func TestMediaImageStreamEnabledUsesModelCapabilitiesOverride(t *testing.T) {
+	tests := []struct {
+		name             string
+		protocol         string
+		upstreamModel    string
+		capabilitiesJSON string
+		want             bool
+	}{
+		{
+			name:          "openai gpt image defaults to stream",
+			protocol:      llm.AdapterOpenAIImageGenerations,
+			upstreamModel: "gpt-image-2",
+			want:          true,
+		},
+		{
+			name:             "explicit false disables stream",
+			protocol:         llm.AdapterOpenAIImageGenerations,
+			upstreamModel:    "gpt-image-2",
+			capabilitiesJSON: `{"image":{"stream":false}}`,
+			want:             false,
+		},
+		{
+			name:             "explicit true preserves protocol default",
+			protocol:         llm.AdapterOpenAIImageGenerations,
+			upstreamModel:    "gpt-image-2",
+			capabilitiesJSON: `{"image":{"stream":true}}`,
+			want:             true,
+		},
+		{
+			name:             "invalid json keeps protocol default",
+			protocol:         llm.AdapterGoogleImageGeneration,
+			upstreamModel:    "gemini-3-pro-image",
+			capabilitiesJSON: `{`,
+			want:             true,
+		},
+		{
+			name:             "unsupported protocol cannot be enabled by capabilities",
+			protocol:         llm.AdapterXAIImage,
+			upstreamModel:    "grok-2-image",
+			capabilitiesJSON: `{"image":{"stream":true}}`,
+			want:             false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := mediaImageStreamEnabled(tt.protocol, tt.upstreamModel, tt.capabilitiesJSON)
+			if got != tt.want {
+				t.Fatalf("mediaImageStreamEnabled() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}

frontend/components/ui/folder-archive.tsx

@@ -0,0 +1,95 @@
+"use client";
+
+import type { Variants } from "motion/react";
+import { motion, useAnimation } from "motion/react";
+import type { HTMLAttributes } from "react";
+import { forwardRef, useCallback, useImperativeHandle, useRef } from "react";
+
+import { cn } from "@/lib/utils";
+
+export interface FolderArchiveIconHandle {
+  startAnimation: () => void;
+  stopAnimation: () => void;
+}
+
+interface FolderArchiveIconProps extends HTMLAttributes<HTMLDivElement> {
+  size?: number;
+}
+
+const BLINK_VARIANTS: Variants = {
+  normal: { opacity: 1 },
+  animate: {
+    opacity: [1, 0, 1],
+    transition: { duration: 0.6, ease: "easeInOut" },
+  },
+};
+
+const FolderArchiveIcon = forwardRef<
+  FolderArchiveIconHandle,
+  FolderArchiveIconProps
+>(({ onMouseEnter, onMouseLeave, className, size = 28, ...props }, ref) => {
+  const controls = useAnimation();
+  const isControlledRef = useRef(false);
+
+  useImperativeHandle(ref, () => {
+    isControlledRef.current = true;
+    return {
+      startAnimation: () => controls.start("animate"),
+      stopAnimation: () => controls.start("normal"),
+    };
+  });
+
+  const handleMouseEnter = useCallback(
+    (e: React.MouseEvent<HTMLDivElement>) => {
+      if (isControlledRef.current) {
+        onMouseEnter?.(e);
+      } else {
+        controls.start("animate");
+      }
+    },
+    [controls, onMouseEnter]
+  );
+
+  const handleMouseLeave = useCallback(
+    (e: React.MouseEvent<HTMLDivElement>) => {
+      if (isControlledRef.current) {
+        onMouseLeave?.(e);
+      } else {
+        controls.start("normal");
+      }
+    },
+    [controls, onMouseLeave]
+  );
+
+  return (
+    <div
+      className={cn(className)}
+      onMouseEnter={handleMouseEnter}
+      onMouseLeave={handleMouseLeave}
+      {...props}
+    >
+      <svg
+        fill="none"
+        height={size}
+        stroke="currentColor"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+        strokeWidth="2"
+        viewBox="0 0 24 24"
+        width={size}
+        xmlns="http://www.w3.org/2000/svg"
+      >
+        <path d="M20.9 19.8A2 2 0 0 0 22 18V8a2 2 0 0 0-2-2h-7.9a2 2 0 0 1-1.69-.9L9.6 3.9A2 2 0 0 0 7.93 3H4a2 2 0 0 0-2 2v13a2 2 0 0 0 2 2h5.1" />
+        <motion.g animate={controls} initial="normal" variants={BLINK_VARIANTS}>
+          <circle cx="15" cy="19" r="2" />
+          <path d="M15 11v-1" />
+          <path d="M15 17v-2" />
+        </motion.g>
+      </svg>
+    </div>
+  );
+});
+
+FolderArchiveIcon.displayName = "FolderArchiveIcon";
+
+export { FolderArchiveIcon };

frontend/features/admin/components/sections/models/model-capabilities-config.tsx

@@ -102,6 +102,40 @@ function parseCapabilitiesObject(raw: string): Record<string, unknown> | null {
   }
 }
 
+export function imageStreamEnabledFromCapabilities(raw: string): boolean {
+  const payload = parseCapabilitiesObject(raw);
+  if (!payload) {
+    return true;
+  }
+  const image = payload.image;
+  if (!isPlainJSONObject(image)) {
+    return true;
+  }
+  return image.stream !== false;
+}
+
+export function setImageStreamEnabledInCapabilities(raw: string, enabled: boolean): string | null {
+  const payload = parseCapabilitiesObject(raw);
+  if (!payload) {
+    return null;
+  }
+  if (enabled) {
+    const image = payload.image;
+    if (isPlainJSONObject(image)) {
+      delete image.stream;
+      if (Object.keys(image).length === 0) {
+        delete payload.image;
+      }
+    }
+  } else {
+    payload.image = {
+      ...(isPlainJSONObject(payload.image) ? payload.image : {}),
+      stream: false,
+    };
+  }
+  return Object.keys(payload).length > 0 ? JSON.stringify(payload, null, 2) : "";
+}
+
 function optionPathSegments(path: string): string[] {
   return path
     .split(".")

frontend/features/admin/components/sections/models/model-sheet.tsx

@@ -13,6 +13,7 @@ import {
 } from "@/components/ui/accordion";
 import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
+import { Checkbox } from "@/components/ui/checkbox";
 import {
   Combobox,
   ComboboxContent,
@@ -77,9 +78,11 @@ import {
 import { parseProtocolsJSON } from "@/features/chat/model/chat-adapter-options";
 import { JsonCodeEditor } from "@/shared/components/json-code-editor";
 import {
+  imageStreamEnabledFromCapabilities,
   MODEL_CAPABILITIES_PLACEHOLDER,
   ModelCapabilitiesGuideButton,
   ModelCapabilitiesQuickConfig,
+  setImageStreamEnabledInCapabilities,
 } from "@/features/admin/components/sections/models/model-capabilities-config";
 import type { NativeToolDefinition } from "@/shared/lib/model-option-policy";
 
@@ -118,6 +121,14 @@ const MODEL_SHEET_VENDOR_OPTIONS: VendorOption[] = [
   }),
 ];
 
+const IMAGE_MEDIA_PROTOCOLS = new Set([
+  "openai_image_generations",
+  "openai_image_edits",
+  "google_image_generation",
+  "xai_image",
+  "xai_image_edits",
+]);
+
 function buildInitialState(target: AdminLLMModelDTO | null): FormState {
   if (!target) {
     return {
@@ -248,6 +259,17 @@ export function ModelSheet({ open, mode, target, onClose, onSuccess }: ModelShee
     ])),
     [sources, target?.protocolsJSON],
   );
+  const imageStreamEnabled = imageStreamEnabledFromCapabilities(form.capabilitiesJSON);
+  const showImageStreamControl = routeProtocols.some((protocol) => IMAGE_MEDIA_PROTOCOLS.has(protocol.trim()));
+
+  function updateImageStreamEnabled(enabled: boolean) {
+    const nextValue = setImageStreamEnabledInCapabilities(form.capabilitiesJSON, enabled);
+    if (nextValue === null) {
+      toast.error(t("sheet.capabilitiesQuick.invalidJSON"));
+      return;
+    }
+    setField("capabilitiesJSON", nextValue);
+  }
 
   function handleClose() {
     onClose();
@@ -590,6 +612,22 @@ export function ModelSheet({ open, mode, target, onClose, onSuccess }: ModelShee
                       <ModelCapabilitiesGuideButton t={t} />
                     </div>
                   </div>
+                  {showImageStreamControl ? (
+                    <label
+                      htmlFor="model-image-stream-enabled"
+                      className="mb-2 flex min-w-0 items-center gap-2 px-1 py-1"
+                    >
+                      <Checkbox
+                        id="model-image-stream-enabled"
+                        checked={imageStreamEnabled}
+                        disabled={pending}
+                        onCheckedChange={(checked) => updateImageStreamEnabled(checked === true)}
+                      />
+                      <span className="min-w-0 truncate text-xs font-medium text-foreground">
+                        {t("sheet.imageStreamEnabled")}
+                      </span>
+                    </label>
+                  ) : null}
                   <JsonCodeEditor
                     id="model-capabilities-json"
                     value={form.capabilitiesJSON}