feat: 添加公告系统，支持动态显示和确认功能

frontend/yarn.lock

@@ -1055,6 +1055,30 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/linkify-it@npm:^5":
+  version: 5.0.0
+  resolution: "@types/linkify-it@npm:5.0.0"
+  checksum: 10c0/7bbbf45b9dde17bf3f184fee585aef0e7342f6954f0377a24e4ff42ab5a85d5b806aaa5c8d16e2faf2a6b87b2d94467a196b7d2b85c9c7de2f0eaac5487aaab8
+  languageName: node
+  linkType: hard
+
+"@types/markdown-it@npm:^14.1.2":
+  version: 14.1.2
+  resolution: "@types/markdown-it@npm:14.1.2"
+  dependencies:
+    "@types/linkify-it": "npm:^5"
+    "@types/mdurl": "npm:^2"
+  checksum: 10c0/34f709f0476bd4e7b2ba7c3341072a6d532f1f4cb6f70aef371e403af8a08a7c372ba6907ac426bc618d356dab660c5b872791ff6c1ead80c483e0d639c6f127
+  languageName: node
+  linkType: hard
+
+"@types/mdurl@npm:^2":
+  version: 2.0.0
+  resolution: "@types/mdurl@npm:2.0.0"
+  checksum: 10c0/cde7bb571630ed1ceb3b92a28f7b59890bb38b8f34cd35326e2df43eebfc74985e6aa6fd4184e307393bad8a9e0783a519a3f9d13c8e03788c0f98e5ec869c5e
+  languageName: node
+  linkType: hard
+
 "@types/ms@npm:*":
   version: 2.1.0
   resolution: "@types/ms@npm:2.1.0"
@@ -2486,7 +2510,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"entities@npm:^4.5.0":
+"entities@npm:^4.4.0, entities@npm:^4.5.0":
   version: 4.5.0
   resolution: "entities@npm:4.5.0"
   checksum: 10c0/5b039739f7621f5d1ad996715e53d964035f75ad3b9a4d38c6b3804bb226e282ffeae2443624d8fdd9c47d8e926ae9ac009c54671243f0c3294c26af7cc85250
@@ -3023,6 +3047,7 @@ __metadata:
   dependencies:
     "@ant-design/icons-vue": "npm:^7.0.1"
     "@types/adm-zip": "npm:^0.5.7"
+    "@types/markdown-it": "npm:^14.1.2"
     "@types/node": "npm:22.17.1"
     "@typescript-eslint/eslint-plugin": "npm:^8.38.0"
     "@typescript-eslint/parser": "npm:^8.38.0"
@@ -3041,6 +3066,7 @@ __metadata:
     eslint-plugin-prettier: "npm:^5.5.3"
     eslint-plugin-vue: "npm:^10.4.0"
     form-data: "npm:^4.0.4"
+    markdown-it: "npm:^14.1.0"
     openapi-typescript-codegen: "npm:^0.29.0"
     prettier: "npm:^3.6.2"
     typescript: "npm:^5.9.2"
@@ -3824,6 +3850,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"linkify-it@npm:^5.0.0":
+  version: 5.0.0
+  resolution: "linkify-it@npm:5.0.0"
+  dependencies:
+    uc.micro: "npm:^2.0.0"
+  checksum: 10c0/ff4abbcdfa2003472fc3eb4b8e60905ec97718e11e33cca52059919a4c80cc0e0c2a14d23e23d8c00e5402bc5a885cdba8ca053a11483ab3cc8b3c7a52f88e2d
+  languageName: node
+  linkType: hard
+
 "locate-path@npm:^6.0.0":
   version: 6.0.0
   resolution: "locate-path@npm:6.0.0"
@@ -3957,6 +3992,22 @@ __metadata:
   languageName: node
   linkType: hard
 
+"markdown-it@npm:^14.1.0":
+  version: 14.1.0
+  resolution: "markdown-it@npm:14.1.0"
+  dependencies:
+    argparse: "npm:^2.0.1"
+    entities: "npm:^4.4.0"
+    linkify-it: "npm:^5.0.0"
+    mdurl: "npm:^2.0.0"
+    punycode.js: "npm:^2.3.1"
+    uc.micro: "npm:^2.1.0"
+  bin:
+    markdown-it: bin/markdown-it.mjs
+  checksum: 10c0/9a6bb444181d2db7016a4173ae56a95a62c84d4cbfb6916a399b11d3e6581bf1cc2e4e1d07a2f022ae72c25f56db90fbe1e529fca16fbf9541659dc53480d4b4
+  languageName: node
+  linkType: hard
+
 "matcher@npm:^3.0.0":
   version: 3.0.0
   resolution: "matcher@npm:3.0.0"
@@ -3973,6 +4024,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"mdurl@npm:^2.0.0":
+  version: 2.0.0
+  resolution: "mdurl@npm:2.0.0"
+  checksum: 10c0/633db522272f75ce4788440669137c77540d74a83e9015666a9557a152c02e245b192edc20bc90ae953bbab727503994a53b236b4d9c99bdaee594d0e7dd2ce0
+  languageName: node
+  linkType: hard
+
 "merge2@npm:^1.3.0":
   version: 1.4.1
   resolution: "merge2@npm:1.4.1"
@@ -4670,6 +4728,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"punycode.js@npm:^2.3.1":
+  version: 2.3.1
+  resolution: "punycode.js@npm:2.3.1"
+  checksum: 10c0/1d12c1c0e06127fa5db56bd7fdf698daf9a78104456a6b67326877afc21feaa821257b171539caedd2f0524027fa38e67b13dd094159c8d70b6d26d2bea4dfdb
+  languageName: node
+  linkType: hard
+
 "punycode@npm:^2.1.0":
   version: 2.3.1
   resolution: "punycode@npm:2.3.1"
@@ -5424,6 +5489,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"uc.micro@npm:^2.0.0, uc.micro@npm:^2.1.0":
+  version: 2.1.0
+  resolution: "uc.micro@npm:2.1.0"
+  checksum: 10c0/8862eddb412dda76f15db8ad1c640ccc2f47cdf8252a4a30be908d535602c8d33f9855dfcccb8b8837855c1ce1eaa563f7fa7ebe3c98fd0794351aab9b9c55fa
+  languageName: node
+  linkType: hard
+
 "uglify-js@npm:^3.1.4":
   version: 3.19.3
   resolution: "uglify-js@npm:3.19.3"