feat(imports): 成绩/名单表格导入 + ClassIsland 时间配置导入 + 安装版增量迁移

服务端:
- 新增 imports 模块: 模板下载(csv/xlsx)、表格解析预览、字段映射导入(append/upsert)、
  错误行号与结果统计; ClassIsland 时间配置容错解析 + replace/merge 导入 + 失败回滚(400 不写库)
- TimeLayout 模型 + 迁移; 修复 contentBase64 空值被 422 拦截, 改由 service 返回 IMPORT_EMPTY_FILE
- merge 语义改为按开始时间槽位覆盖, 同开始时间的旧节次不再被静默丢弃
- db-bootstrap 增加 _ch_migrations 账本: 覆盖安装升级也能自动补跑新增迁移(旧库实测通过)

Web 管理端:
- TableImportDialog(成绩/名单): 模板下载、预览、字段映射、重复处理模式、结果统计与错误行
- TimeLayoutImportDialog: 粘贴/选 .json、解析预览、覆盖/合并、已导入列表与删除
- 成绩录入/学生管理/课表管理接入入口(按权限矩阵显示)

验证: verify:e2e 107/107(新增导入 22 项) verify:web 18/18(新增时间配置导入弹窗真实点击)
      verify:desktop 40/40
文档: README 新增导入章节、增量迁移说明、API 表与验收对照更新

pnpm-lock.yaml

@@ -126,6 +126,9 @@ importers:
       socket.io:
         specifier: ^4.8.3
         version: 4.8.3
+      xlsx:
+        specifier: 0.18.5
+        version: 0.18.5
       zod:
         specifier: ^4.6.2
         version: 4.6.2
@@ -1213,6 +1216,10 @@ packages:
     engines: {node: '>=0.4.0'}
     hasBin: true
 
+  adler-32@1.3.1:
+    resolution: {integrity: sha512-ynZ4w/nUUv5rrsR8UUGoe1VC9hZj6V5hU9Qw1HlMDJGEJw5S7TfTErWTjMys6M7vr0YWcPqs3qAr4ss0nDfP+A==}
+    engines: {node: '>=0.8'}
+
   agent-base@6.0.2:
     resolution: {integrity: sha512-RZNwNclF7+MS/8bDg70amg32dyeZGZxiDuQmZxKLAlQjr3jGyLx+4Kkk58UO7D2QdgFIQCovuSuZESne6RG6XQ==}
     engines: {node: '>= 6.0.0'}
@@ -1395,6 +1402,10 @@ packages:
     resolution: {integrity: sha512-+ys997U96po4Kx/ABpBCqhA9EuxJaQWDQg7295H4hBphv3IZg0boBKuwYpt4YXp6MZ5AmZQnU/tyMTlRpaSejg==}
     engines: {node: '>= 0.4'}
 
+  cfb@1.2.2:
+    resolution: {integrity: sha512-KfdUZsSOw19/ObEWasvBP/Ac4reZvAGauZhs6S/gqNhXhI7cKwvlH7ulj+dOEYnca4bm4SGo8C1bTAQvnTjgQA==}
+    engines: {node: '>=0.8'}
+
   chalk@4.1.2:
     resolution: {integrity: sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA==}
     engines: {node: '>=10'}
@@ -1436,6 +1447,10 @@ packages:
   clone-response@1.0.3:
     resolution: {integrity: sha512-ROoL94jJH2dUVML2Y/5PEDNaSHgeOdSDicUyS7izcF63G6sTc/FTjLub4b8Il9S8S0beOfYt0TaA5qvFK+w0wA==}
 
+  codepage@1.15.0:
+    resolution: {integrity: sha512-3g6NUTPd/YtuuGrhMnOMRjFc+LJw/bnMp3+0r/Wcz3IXUuCosKRJvMphm5+Q+bvTVGcJJuRvVLuYba+WojaFaA==}
+    engines: {node: '>=0.8'}
+
   color-convert@2.0.1:
     resolution: {integrity: sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==}
     engines: {node: '>=7.0.0'}
@@ -1511,6 +1526,11 @@ packages:
     resolution: {integrity: sha512-tJtZBBHA6vjIAaF6EnIaq6laBBP9aq/Y3ouVJjEfoHbRBcHBAHYcMh/w8LDrk2PvIMMq8gmopa5D4V8RmbrxGw==}
     engines: {node: '>= 0.10'}
 
+  crc-32@1.2.2:
+    resolution: {integrity: sha512-ROmzCKrTnOwybPcJApAA6WBWij23HVfGVNKqqrZpuyZOHqK2CwHSvpGuyt/UNNvaIjEd8X5IFGp4Mh+Ie1IHJQ==}
+    engines: {node: '>=0.8'}
+    hasBin: true
+
   cross-dirname@0.1.0:
     resolution: {integrity: sha512-+R08/oI0nl3vfPcqftZRpytksBXDzOUveBq/NBVx0sUp1axwzPQrKinNx5yd5sxPu8j1wIy8AfnVQ+5eFdha6Q==}
 
@@ -1956,6 +1976,10 @@ packages:
     resolution: {integrity: sha512-buRG0fpBtRHSTCOASe6hD258tEubFoRLb4ZNA6NxMVHNw2gOcwHo9wyablzMzOA5z9xA9L1KNjk/Nt6MT9aYow==}
     engines: {node: '>= 0.6'}
 
+  frac@1.1.2:
+    resolution: {integrity: sha512-w/XBfkibaTl3YDqASwfDUqkna4Z2p9cFSr1aHDt0WoMTECnRfBOv2WArlZILlqgWlmdIlALXGpM2AOhEk5W3IA==}
+    engines: {node: '>=0.8'}
+
   fresh@2.0.0:
     resolution: {integrity: sha512-Rx/WycZ60HOaqLKAi6cHRKKI7zxWbJ31MhntmtwMoaTeF7XFH9hhBp8vITaMidfljRQ6eYWCKkaTK+ykVJHP2A==}
     engines: {node: '>= 0.8'}
@@ -2981,6 +3005,10 @@ packages:
     resolution: {integrity: sha512-qC9iz2FlN7DQl3+wjwn3802RTyjCx7sDvfQEXchwa6CWOx07/WVfh91gBmQ9fahw8snwGEWU3xGzOt4tFyHLxg==}
     engines: {node: '>= 0.6'}
 
+  ssf@0.11.2:
+    resolution: {integrity: sha512-+idbmIXoYET47hH+d7dfm2epdOMUDjqcB4648sTZ+t2JwoyBFL/insLfB/racrDmsKB3diwsDA696pZMieAC5g==}
+    engines: {node: '>=0.8'}
+
   stat-mode@1.0.0:
     resolution: {integrity: sha512-jH9EhtKIjuXZ2cWxmXS8ZP80XyC3iasQxMDV8jzhNJpfDb7VbQLVW4Wvsxz9QZvzV+G4YoSfBUVKDOyxLzi/sg==}
     engines: {node: '>= 6'}
@@ -3298,10 +3326,18 @@ packages:
     engines: {node: ^20.17.0 || >=22.9.0}
     hasBin: true
 
+  wmf@1.0.2:
+    resolution: {integrity: sha512-/p9K7bEh0Dj6WbXg4JG0xvLQmIadrner1bi45VMJTfnbVHsc7yIajZyoSoK60/dtVBs12Fm6WkUI5/3WAVsNMw==}
+    engines: {node: '>=0.8'}
+
   word-wrap@1.2.5:
     resolution: {integrity: sha512-BN22B5eaMMI9UMtjrGd5g5eCYPpCPDUy0FJXbYsaT5zYxjFOckS53SQDE3pWkVoWpHXVb3BrYcEN4Twa55B5cA==}
     engines: {node: '>=0.10.0'}
 
+  word@0.3.0:
+    resolution: {integrity: sha512-OELeY0Q61OXpdUfTp+oweA/vtLVg5VDOXh+3he3PNzLGG/y0oylSOC1xRVj0+l4vQ3tj/bB1HVHv1ocXkQceFA==}
+    engines: {node: '>=0.8'}
+
   wrap-ansi@7.0.0:
     resolution: {integrity: sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==}
     engines: {node: '>=10'}
@@ -3325,6 +3361,11 @@ packages:
       utf-8-validate:
         optional: true
 
+  xlsx@0.18.5:
+    resolution: {integrity: sha512-dmg3LCjBPHZnQp5/F/+nnTa+miPJxUXB6vtk42YjBBKayDNagxGEeIdWApkYPOf3Z3pm3k62Knjzp7lMeTEtFQ==}
+    engines: {node: '>=0.8'}
+    hasBin: true
+
   xml-name-validator@5.0.0:
     resolution: {integrity: sha512-EvGK8EJ3DhaHfbRlETOWAS5pO9MZITeauHKJyb8wyajUfQUenkIg2MvLDTZ4T/TgIcm3HU0TFBgWWboAZ30UHg==}
     engines: {node: '>=18'}
@@ -4446,6 +4487,8 @@ snapshots:
 
   acorn@8.18.0: {}
 
+  adler-32@1.3.1: {}
+
   agent-base@6.0.2:
     dependencies:
       debug: 4.4.3
@@ -4702,6 +4745,11 @@ snapshots:
       call-bind-apply-helpers: 1.0.2
       get-intrinsic: 1.3.0
 
+  cfb@1.2.2:
+    dependencies:
+      adler-32: 1.3.1
+      crc-32: 1.2.2
+
   chalk@4.1.2:
     dependencies:
       ansi-styles: 4.3.0
@@ -4739,6 +4787,8 @@ snapshots:
     dependencies:
       mimic-response: 1.0.1
 
+  codepage@1.15.0: {}
+
   color-convert@2.0.1:
     dependencies:
       color-name: 1.1.4
@@ -4807,6 +4857,8 @@ snapshots:
       object-assign: 4.1.1
       vary: 1.1.2
 
+  crc-32@1.2.2: {}
+
   cross-dirname@0.1.0:
     optional: true
 
@@ -5364,6 +5416,8 @@ snapshots:
 
   forwarded@0.2.0: {}
 
+  frac@1.1.2: {}
+
   fresh@2.0.0: {}
 
   fs-extra@10.1.0:
@@ -6402,6 +6456,10 @@ snapshots:
 
   sqlstring@2.3.3: {}
 
+  ssf@0.11.2:
+    dependencies:
+      frac: 1.1.2
+
   stat-mode@1.0.0: {}
 
   statuses@2.0.2: {}
@@ -6680,8 +6738,12 @@ snapshots:
     dependencies:
       isexe: 4.0.0
 
+  wmf@1.0.2: {}
+
   word-wrap@1.2.5: {}
 
+  word@0.3.0: {}
+
   wrap-ansi@7.0.0:
     dependencies:
       ansi-styles: 4.3.0
@@ -6698,6 +6760,16 @@ snapshots:
 
   ws@8.21.3: {}
 
+  xlsx@0.18.5:
+    dependencies:
+      adler-32: 1.3.1
+      cfb: 1.2.2
+      codepage: 1.15.0
+      crc-32: 1.2.2
+      ssf: 0.11.2
+      wmf: 1.0.2
+      word: 0.3.0
+
   xml-name-validator@5.0.0: {}
 
   xmlbuilder@15.1.1: {}