修复批量解密图片逻辑 加快速度

src/pages/ChatPage.scss

@@ -3331,9 +3331,12 @@
 // 批量转写模态框基础样式（共享样式在 styles/batchTranscribe.scss）
 
 // 批量转写确认对话框
-.batch-confirm-modal {
+.batch-modal-content.batch-confirm-modal {
   width: 480px;
   max-width: 90vw;
+  max-height: none;
+  overflow: visible;
+  overflow-y: visible;
 
   .batch-modal-header {
     display: flex;
@@ -3470,6 +3473,74 @@
           font-weight: 600;
           color: var(--primary-color);
         }
+
+        .batch-concurrency-field {
+          position: relative;
+
+          .batch-concurrency-trigger {
+            display: flex;
+            align-items: center;
+            gap: 6px;
+            padding: 6px 12px;
+            border-radius: 9999px;
+            border: 1px solid var(--border-color);
+            background: var(--bg-primary);
+            color: var(--text-primary);
+            font-size: 13px;
+            cursor: pointer;
+
+            &:hover {
+              border-color: var(--text-tertiary);
+            }
+
+            &.open {
+              border-color: var(--primary);
+            }
+
+            svg {
+              color: var(--text-tertiary);
+              transition: transform 0.2s;
+            }
+
+            &.open svg {
+              transform: rotate(180deg);
+            }
+          }
+
+          .batch-concurrency-dropdown {
+            position: absolute;
+            top: calc(100% + 6px);
+            right: 0;
+            min-width: 180px;
+            background: color-mix(in srgb, var(--bg-primary) 90%, var(--bg-secondary));
+            border: 1px solid var(--border-color);
+            border-radius: 12px;
+            padding: 6px;
+            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
+            z-index: 100;
+          }
+
+          .batch-concurrency-option {
+            width: 100%;
+            text-align: left;
+            padding: 8px 12px;
+            border: none;
+            border-radius: 8px;
+            background: transparent;
+            color: var(--text-primary);
+            font-size: 13px;
+            cursor: pointer;
+
+            &:hover {
+              background: var(--bg-tertiary);
+            }
+
+            &.active {
+              color: var(--primary);
+              font-weight: 500;
+            }
+          }
+        }
       }
     }
 
@@ -3527,7 +3598,7 @@
       &.btn-primary,
       &.batch-transcribe-start-btn {
         background: var(--primary-color);
-        color: white;
+        color: #000;
 
         &:hover {
           opacity: 0.9;

src/pages/ChatPage.tsx

@@ -345,6 +345,8 @@ function ChatPage(_props: ChatPageProps) {
   const [batchImageMessages, setBatchImageMessages] = useState<BatchImageDecryptCandidate[] | null>(null)
   const [batchImageDates, setBatchImageDates] = useState<string[]>([])
   const [batchImageSelectedDates, setBatchImageSelectedDates] = useState<Set<string>>(new Set())
+  const [batchDecryptConcurrency, setBatchDecryptConcurrency] = useState(6)
+  const [showConcurrencyDropdown, setShowConcurrencyDropdown] = useState(false)
 
   // 批量删除相关状态
   const [isDeleting, setIsDeleting] = useState(false)
@@ -1662,29 +1664,44 @@ function ChatPage(_props: ChatPageProps) {
 
     let successCount = 0
     let failCount = 0
-    for (let i = 0; i < images.length; i++) {
-      const img = images[i]
+    let completed = 0
+    const concurrency = batchDecryptConcurrency
+
+    const decryptOne = async (img: typeof images[0]) => {
       try {
         const r = await window.electronAPI.image.decrypt({
           sessionId: session.username,
           imageMd5: img.imageMd5,
           imageDatName: img.imageDatName,
-          force: false
+          force: true
         })
         if (r?.success) successCount++
         else failCount++
       } catch {
         failCount++
       }
-
-      updateDecryptProgress(i + 1, images.length)
-      if (i % 5 === 0) {
-        await new Promise(resolve => setTimeout(resolve, 0))
-      }
+      completed++
+      updateDecryptProgress(completed, images.length)
     }
 
+    // 并发池：同时跑 concurrency 个任务
+    const pool: Promise<void>[] = []
+    for (const img of images) {
+      const p = decryptOne(img)
+      pool.push(p)
+      if (pool.length >= concurrency) {
+        await Promise.race(pool)
+        // 移除已完成的
+        for (let j = pool.length - 1; j >= 0; j--) {
+          const settled = await Promise.race([pool[j].then(() => true), Promise.resolve(false)])
+          if (settled) pool.splice(j, 1)
+        }
+      }
+    }
+    await Promise.all(pool)
+
     finishDecrypt(successCount, failCount)
-  }, [batchImageMessages, batchImageSelectedDates, currentSessionId, finishDecrypt, sessions, startDecrypt, updateDecryptProgress])
+  }, [batchImageMessages, batchImageSelectedDates, batchDecryptConcurrency, currentSessionId, finishDecrypt, sessions, startDecrypt, updateDecryptProgress])
 
   const batchImageCountByDate = useMemo(() => {
     const map = new Map<string, number>()
@@ -2623,6 +2640,39 @@ function ChatPage(_props: ChatPageProps) {
                   <span className="label">已选:</span>
                   <span className="value">{batchImageSelectedDates.size} 天，共 {batchImageSelectedCount} 张图片</span>
                 </div>
+                <div className="info-item">
+                  <span className="label">并发数:</span>
+                  <div className="batch-concurrency-field">
+                    <button
+                      type="button"
+                      className={`batch-concurrency-trigger ${showConcurrencyDropdown ? 'open' : ''}`}
+                      onClick={() => setShowConcurrencyDropdown(!showConcurrencyDropdown)}
+                    >
+                      <span>{batchDecryptConcurrency === 1 ? '1（最慢，最稳）' : batchDecryptConcurrency === 6 ? '6（推荐）' : batchDecryptConcurrency === 20 ? '20（最快，可能卡顿）' : String(batchDecryptConcurrency)}</span>
+                      <ChevronDown size={14} />
+                    </button>
+                    {showConcurrencyDropdown && (
+                      <div className="batch-concurrency-dropdown">
+                        {[
+                          { value: 1, label: '1（最慢，最稳）' },
+                          { value: 3, label: '3' },
+                          { value: 6, label: '6（推荐）' },
+                          { value: 10, label: '10' },
+                          { value: 20, label: '20（最快，可能卡顿）' },
+                        ].map(opt => (
+                          <button
+                            key={opt.value}
+                            type="button"
+                            className={`batch-concurrency-option ${batchDecryptConcurrency === opt.value ? 'active' : ''}`}
+                            onClick={() => { setBatchDecryptConcurrency(opt.value); setShowConcurrencyDropdown(false) }}
+                          >
+                            {opt.label}
+                          </button>
+                        ))}
+                      </div>
+                    )}
+                  </div>
+                </div>
               </div>
               <div className="batch-warning">
                 <AlertCircle size={16} />