release: v1.2.3 — 修复简短图片链接在按年/月存储下 404

开启简短链接时纯文件名直链先经 SQLite 索引反查完整 key，不再误解析为扁平 images/文件名路径。

server/utils/serve-image-path.test.ts

@@ -1,10 +1,31 @@
-import { describe, expect, it } from 'vitest'
+import { describe, expect, it, vi, afterEach } from 'vitest'
+import { findImageKeyByDatePath, findImageKeyByFilename } from './image-index'
 import { requestPathToImageKey } from './serve-image'
 
+vi.mock('./image-index', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('./image-index')>()
+  return {
+    ...actual,
+    findImageKeyByFilename: vi.fn(actual.findImageKeyByFilename),
+    findImageKeyByDatePath: vi.fn(actual.findImageKeyByDatePath)
+  }
+})
+
 describe('requestPathToImageKey hide folder', () => {
-  it('resolves bare filename to default folder flat key', () => {
+  afterEach(() => {
+    vi.mocked(findImageKeyByFilename).mockReset()
+    vi.mocked(findImageKeyByDatePath).mockReset()
+  })
+
+  it('resolves bare filename via index when hide folder is enabled', () => {
+    vi.mocked(findImageKeyByFilename).mockReturnValue('images/2026/08/demo.webp')
     expect(requestPathToImageKey('/demo.webp', { hideFolder: true }))
-      .toBe('images/demo.webp')
+      .toBe('images/2026/08/demo.webp')
+  })
+
+  it('does not guess flat images/name when hide folder is enabled', () => {
+    vi.mocked(findImageKeyByFilename).mockReturnValue(null)
+    expect(requestPathToImageKey('/demo.webp', { hideFolder: true })).toBeNull()
   })
 
   it('resolves hidden date path to default folder key', () => {

server/utils/serve-image.ts

@@ -8,7 +8,7 @@ import {
 } from './env'
 import { findImageKeyByDatePath, findImageKeyByFilename } from './image-index'
 import { validateImageKey } from './image-key'
-import { toStorageKeyFromPublicPath } from './image-public-path'
+import { isBareImageFilename, toStorageKeyFromPublicPath } from './image-public-path'
 import { buildPublicImageUrl } from './image-response'
 import { createImageStream, headImage } from './storage'
 import { getBackendRowForKey } from './storage/resolver'
@@ -85,6 +85,13 @@ export function requestPathToImageKey(
 
   if (validateImageKey(raw)) return raw
 
+  // 简短链接：纯文件名须先走索引反查，不能猜成 images/文件名（与按年/月存储冲突）
+  if (options?.hideFolder && isBareImageFilename(raw)) {
+    const byFilename = findImageKeyByFilename(raw)
+    if (byFilename && validateImageKey(byFilename)) return byFilename
+    return null
+  }
+
   const fromPublic = toStorageKeyFromPublicPath(raw)
   if (fromPublic) return fromPublic