diff --git a/e2e/announcements.spec.ts b/e2e/announcements.spec.ts
index 50cafa68..0caa9d58 100644
--- a/e2e/announcements.spec.ts
+++ b/e2e/announcements.spec.ts
@@ -17,9 +17,9 @@ test.describe('Site announcements', () => {
       await page.getByRole('button', { name: 'New Announcement' }).click()
       const dialog = page.getByRole('dialog')
       await expect(dialog).toBeVisible()
-      await dialog.getByLabel('Title').fill(title)
-      await dialog.getByLabel('Body').fill(body)
-      await dialog.getByLabel('Priority').fill('100')
+      await dialog.getByRole('textbox', { name: 'Title' }).fill(title)
+      await dialog.getByRole('textbox', { name: 'Body' }).fill(body)
+      await dialog.getByRole('spinbutton', { name: 'Priority' }).fill('100')
       await expect(dialog.locator('li', { hasText: listItem })).toBeVisible()
 
       const [createResp] = await Promise.all([
diff --git a/package-lock.json b/package-lock.json
index b2089ffc..5dbc2808 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -30,6 +30,7 @@
         "@tanstack/react-query": "^5.62.0",
         "@tanstack/react-router": "^1.93.0",
         "@tanstack/react-table": "^8.21.3",
+        "@uiw/react-md-editor": "^4.1.0",
         "@vidstack/react": "^1.12.13",
         "better-auth": "^1.6.2",
         "better-sqlite3": "^11.0.0",
@@ -9916,6 +9917,12 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/prismjs": {
+      "version": "1.26.6",
+      "resolved": "https://registry.npmjs.org/@types/prismjs/-/prismjs-1.26.6.tgz",
+      "integrity": "sha512-vqlvI7qlMvcCBbVe0AKAb4f97//Hy0EBTaiW8AalRnG/xAN5zOiWWyrNqNXeq8+KAuvRewjCVY1+IPxk4RdNYw==",
+      "license": "MIT"
+    },
     "node_modules/@types/react": {
       "version": "19.2.14",
       "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.14.tgz",
@@ -9951,6 +9958,62 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@uiw/copy-to-clipboard": {
+      "version": "1.0.20",
+      "resolved": "https://registry.npmjs.org/@uiw/copy-to-clipboard/-/copy-to-clipboard-1.0.20.tgz",
+      "integrity": "sha512-IFQhS62CLNon1YgYJTEzXR2N3WVXg7V1FaBRDLMlzU6JY5X6Hr3OPAcw4WNoKcz2XcFD6XCgwEjlsmj+JA0mWA==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://jaywcjlove.github.io/#/sponsor"
+      }
+    },
+    "node_modules/@uiw/react-markdown-preview": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/@uiw/react-markdown-preview/-/react-markdown-preview-5.2.0.tgz",
+      "integrity": "sha512-39kgf+Wk6DXpYtztUt34xFPt0BzGkuxmFZKI7rNAlCFKXdAmyhqLlRbQKyrRwOVeuRyrQy/Z96UBSw5AHFBivg==",
+      "license": "MIT",
+      "dependencies": {
+        "@babel/runtime": "^7.17.2",
+        "@uiw/copy-to-clipboard": "~1.0.12",
+        "react-markdown": "~10.1.0",
+        "rehype-attr": "~4.0.0",
+        "rehype-autolink-headings": "~7.1.0",
+        "rehype-ignore": "^2.0.0",
+        "rehype-prism-plus": "~2.0.0",
+        "rehype-raw": "^7.0.0",
+        "rehype-rewrite": "~4.0.0",
+        "rehype-slug": "~6.0.0",
+        "remark-gfm": "~4.0.0",
+        "remark-github-blockquote-alert": "^1.0.0",
+        "unist-util-visit": "^5.0.0"
+      },
+      "funding": {
+        "url": "https://jaywcjlove.github.io/#/sponsor"
+      },
+      "peerDependencies": {
+        "react": ">=16.8.0",
+        "react-dom": ">=16.8.0"
+      }
+    },
+    "node_modules/@uiw/react-md-editor": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/@uiw/react-md-editor/-/react-md-editor-4.1.0.tgz",
+      "integrity": "sha512-ti8WO9Mf55bFdb5JXEJmQ77NQRG8VyUAuE6c5XRwMI3S05Q0uuiRKOs5yAyJWiISgkV39DMmf4UU8DbADPILhw==",
+      "license": "MIT",
+      "dependencies": {
+        "@babel/runtime": "^7.14.6",
+        "@uiw/react-markdown-preview": "^5.2.0",
+        "rehype": "~13.0.0",
+        "rehype-prism-plus": "~2.0.0"
+      },
+      "funding": {
+        "url": "https://jaywcjlove.github.io/#/sponsor"
+      },
+      "peerDependencies": {
+        "react": ">=16.8.0",
+        "react-dom": ">=16.8.0"
+      }
+    },
     "node_modules/@ungap/structured-clone": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/@ungap/structured-clone/-/structured-clone-1.3.0.tgz",
@@ -10357,6 +10420,16 @@
         "node": ">=6.0.0"
       }
     },
+    "node_modules/bcp-47-match": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/bcp-47-match/-/bcp-47-match-2.0.3.tgz",
+      "integrity": "sha512-JtTezzbAibu8G0R9op9zb3vcWZd9JF6M0xOYGPn0fNCd7wOpRB1mU2mH9T8gaBGbAAyIIVgB2G7xG0GP98zMAQ==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/wooorm"
+      }
+    },
     "node_modules/better-auth": {
       "version": "1.6.2",
       "resolved": "https://registry.npmjs.org/better-auth/-/better-auth-1.6.2.tgz",
@@ -10552,6 +10625,12 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/boolbase": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/boolbase/-/boolbase-1.0.0.tgz",
+      "integrity": "sha512-JZOSA7Mo9sNGB8+UjSgzdLtokWAky1zbztM3WRLCbZ70/3cTANmQmOdR7y2g+J0e2WXywy1yS468tY+IruqEww==",
+      "license": "ISC"
+    },
     "node_modules/bowser": {
       "version": "2.14.1",
       "resolved": "https://registry.npmjs.org/bowser/-/bowser-2.14.1.tgz",
@@ -10967,6 +11046,22 @@
         "webidl-conversions": "^3.0.0"
       }
     },
+    "node_modules/css-selector-parser": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/css-selector-parser/-/css-selector-parser-3.3.0.tgz",
+      "integrity": "sha512-Y2asgMGFqJKF4fq4xHDSlFYIkeVfRsm69lQC1q9kbEsH5XtnINTMrweLkjYMeaUgiXBy/uvKeO/a1JHTNnmB2g==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/mdevils"
+        },
+        {
+          "type": "patreon",
+          "url": "https://patreon.com/mdevils"
+        }
+      ],
+      "license": "MIT"
+    },
     "node_modules/css-tree": {
       "version": "3.2.1",
       "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-3.2.1.tgz",
@@ -11125,6 +11220,19 @@
         "node": ">=0.3.1"
       }
     },
+    "node_modules/direction": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/direction/-/direction-2.0.1.tgz",
+      "integrity": "sha512-9S6m9Sukh1cZNknO1CWAr2QAWsbKLafQiyM5gZ7VgXHeuaoUwffKN4q6NC4A/Mf9iiPlOXQEKW/Mv/mh9/3YFA==",
+      "license": "MIT",
+      "bin": {
+        "direction": "cli.js"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/wooorm"
+      }
+    },
     "node_modules/dom-accessibility-api": {
       "version": "0.5.16",
       "resolved": "https://registry.npmjs.org/dom-accessibility-api/-/dom-accessibility-api-0.5.16.tgz",
@@ -11791,7 +11899,6 @@
       "version": "6.0.1",
       "resolved": "https://registry.npmjs.org/entities/-/entities-6.0.1.tgz",
       "integrity": "sha512-aN97NXWF6AWBTahfVOIrB/NShkzi5H7F9r1s9mD3cDj4Ko5f2qhhVoYMibXF7GlLveb/D2ioWay8lxI97Ven3g==",
-      "dev": true,
       "license": "BSD-2-Clause",
       "engines": {
         "node": ">=0.12"
@@ -12163,6 +12270,12 @@
       "integrity": "sha512-SyHy3T1v2NUXn29OsWdxmK6RwHD+vkj3v8en8AOBZ1wBQ/hCAQ5bAQTD02kW4W9tUp/3Qh6J8r9EvntiyCmOOw==",
       "license": "MIT"
     },
+    "node_modules/github-slugger": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/github-slugger/-/github-slugger-2.0.0.tgz",
+      "integrity": "sha512-IaOQ9puYtjrkq7Y0Ygl9KDZnrf/aiUJYUpVf89y8kyaxbRG7Y1SrX/jaumrv81vc61+kiMempujsM3Yw7w5qcw==",
+      "license": "ISC"
+    },
     "node_modules/glob-parent": {
       "version": "5.1.2",
       "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-5.1.2.tgz",
@@ -12193,6 +12306,172 @@
         "node": ">=8"
       }
     },
+    "node_modules/hast-util-from-html": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/hast-util-from-html/-/hast-util-from-html-2.0.3.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "devlop": "^1.1.0",
+        "hast-util-from-parse5": "^8.0.0",
+        "parse5": "^7.0.0",
+        "vfile": "^6.0.0",
+        "vfile-message": "^4.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
+    "node_modules/hast-util-from-html/node_modules/parse5": {
+      "version": "7.3.0",
+      "resolved": "https://registry.npmjs.org/parse5/-/parse5-7.3.0.tgz",
+      "integrity": "sha512-IInvU7fabl34qmi9gY8XOVxhYyMyuH2xUNpb2q8/Y+7552KlejkRvqvD19nMoUW/uQGGbqNpA6Tufu5FL5BZgw==",
+      "license": "MIT",
+      "dependencies": {
+        "entities": "^6.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/inikulin/parse5?sponsor=1"
+      }
+    },
+    "node_modules/hast-util-from-parse5": {
+      "version": "8.0.3",
+      "resolved": "https://registry.npmjs.org/hast-util-from-parse5/-/hast-util-from-parse5-8.0.3.tgz",
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+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "@types/unist": "^3.0.0",
+        "devlop": "^1.0.0",
+        "hastscript": "^9.0.0",
+        "property-information": "^7.0.0",
+        "vfile": "^6.0.0",
+        "vfile-location": "^5.0.0",
+        "web-namespaces": "^2.0.0"
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+        "url": "https://opencollective.com/unified"
+      }
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+      "resolved": "https://registry.npmjs.org/hast-util-has-property/-/hast-util-has-property-3.0.0.tgz",
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+        "url": "https://opencollective.com/unified"
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+      "resolved": "https://registry.npmjs.org/hast-util-heading-rank/-/hast-util-heading-rank-3.0.0.tgz",
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+        "url": "https://opencollective.com/unified"
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+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "@types/unist": "^3.0.0",
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+        "hast-util-to-parse5": "^8.0.0",
+        "html-void-elements": "^3.0.0",
+        "mdast-util-to-hast": "^13.0.0",
+        "parse5": "^7.0.0",
+        "unist-util-position": "^5.0.0",
+        "unist-util-visit": "^5.0.0",
+        "vfile": "^6.0.0",
+        "web-namespaces": "^2.0.0",
+        "zwitch": "^2.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
+    "node_modules/hast-util-raw/node_modules/parse5": {
+      "version": "7.3.0",
+      "resolved": "https://registry.npmjs.org/parse5/-/parse5-7.3.0.tgz",
+      "integrity": "sha512-IInvU7fabl34qmi9gY8XOVxhYyMyuH2xUNpb2q8/Y+7552KlejkRvqvD19nMoUW/uQGGbqNpA6Tufu5FL5BZgw==",
+      "license": "MIT",
+      "dependencies": {
+        "entities": "^6.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/inikulin/parse5?sponsor=1"
+      }
+    },
+    "node_modules/hast-util-select": {
+      "version": "6.0.4",
+      "resolved": "https://registry.npmjs.org/hast-util-select/-/hast-util-select-6.0.4.tgz",
+      "integrity": "sha512-RqGS1ZgI0MwxLaKLDxjprynNzINEkRHY2i8ln4DDjgv9ZhcYVIHN9rlpiYsqtFwrgpYU361SyWDQcGNIBVu3lw==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "@types/unist": "^3.0.0",
+        "bcp-47-match": "^2.0.0",
+        "comma-separated-tokens": "^2.0.0",
+        "css-selector-parser": "^3.0.0",
+        "devlop": "^1.0.0",
+        "direction": "^2.0.0",
+        "hast-util-has-property": "^3.0.0",
+        "hast-util-to-string": "^3.0.0",
+        "hast-util-whitespace": "^3.0.0",
+        "nth-check": "^2.0.0",
+        "property-information": "^7.0.0",
+        "space-separated-tokens": "^2.0.0",
+        "unist-util-visit": "^5.0.0",
+        "zwitch": "^2.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
     "node_modules/hast-util-to-html": {
       "version": "9.0.5",
       "resolved": "https://registry.npmjs.org/hast-util-to-html/-/hast-util-to-html-9.0.5.tgz",
@@ -12243,6 +12522,38 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/hast-util-to-parse5": {
+      "version": "8.0.1",
+      "resolved": "https://registry.npmjs.org/hast-util-to-parse5/-/hast-util-to-parse5-8.0.1.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "comma-separated-tokens": "^2.0.0",
+        "devlop": "^1.0.0",
+        "property-information": "^7.0.0",
+        "space-separated-tokens": "^2.0.0",
+        "web-namespaces": "^2.0.0",
+        "zwitch": "^2.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
+    "node_modules/hast-util-to-string": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/hast-util-to-string/-/hast-util-to-string-3.0.1.tgz",
+      "integrity": "sha512-XelQVTDWvqcl3axRfI0xSeoVKzyIFPwsAGSLIsKdJKQMXDYJS4WYrBNF/8J7RdhIcFI2BOHgAifggsvsxp/3+A==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
     "node_modules/hast-util-whitespace": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/hast-util-whitespace/-/hast-util-whitespace-3.0.0.tgz",
@@ -12256,6 +12567,23 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/hastscript": {
+      "version": "9.0.1",
+      "resolved": "https://registry.npmjs.org/hastscript/-/hastscript-9.0.1.tgz",
+      "integrity": "sha512-g7df9rMFX/SPi34tyGCyUBREQoKkapwdY/T04Qn9TDWfHhAYt4/I0gMVirzK5wEzeUqIjEB+LXC/ypb7Aqno5w==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "comma-separated-tokens": "^2.0.0",
+        "hast-util-parse-selector": "^4.0.0",
+        "property-information": "^7.0.0",
+        "space-separated-tokens": "^2.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
     "node_modules/hono": {
       "version": "4.12.14",
       "resolved": "https://registry.npmjs.org/hono/-/hono-4.12.14.tgz",
@@ -14426,6 +14754,18 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/nth-check": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/nth-check/-/nth-check-2.1.1.tgz",
+      "integrity": "sha512-lqjrjmaOoAnWfMmBPL+XNnynZh2+swxiX3WUE0s4yEHI6m+AwrK2UZOimIRl3X/4QctVqS8AiZjFqyOGrMXb/w==",
+      "license": "BSD-2-Clause",
+      "dependencies": {
+        "boolbase": "^1.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/nth-check?sponsor=1"
+      }
+    },
     "node_modules/object-assign": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
@@ -14513,6 +14853,12 @@
       "integrity": "sha512-CmBKiL6NNo/OqgmMn95Fk9Whlp2mtvIv+KNpQKN2F4SjvrEesubTRWGYSg+BnWZOnlCaSTU1sMpsBOzgbYhnsA==",
       "license": "MIT"
     },
+    "node_modules/parse-numeric-range": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/parse-numeric-range/-/parse-numeric-range-1.3.0.tgz",
+      "integrity": "sha512-twN+njEipszzlMJd4ONUYgSfZPDxgHhT9Ahed5uTigpQn90FggW4SA/AIPq/6a149fTbE9qBEcSwE3FAEp6wQQ==",
+      "license": "ISC"
+    },
     "node_modules/parse5": {
       "version": "8.0.0",
       "resolved": "https://registry.npmjs.org/parse5/-/parse5-8.0.0.tgz",
@@ -15380,6 +15726,22 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/refractor": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/refractor/-/refractor-5.0.0.tgz",
+      "integrity": "sha512-QXOrHQF5jOpjjLfiNk5GFnWhRXvxjUVnlFxkeDmewR5sXkr3iM46Zo+CnRR8B+MDVqkULW4EcLVcRBNOPXHosw==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "@types/prismjs": "^1.0.0",
+        "hastscript": "^9.0.0",
+        "parse-entities": "^4.0.0"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/wooorm"
+      }
+    },
     "node_modules/regex": {
       "version": "6.1.0",
       "resolved": "https://registry.npmjs.org/regex/-/regex-6.1.0.tgz",
@@ -15404,6 +15766,181 @@
       "integrity": "sha512-8VhliFJAWRaUiVvREIiW2NXXTmHs4vMNnSzuJVhscgmGav3g9VDxLrQndI3dZZVVdp0ZO/5v0xmX516/7M9cng==",
       "license": "MIT"
     },
+    "node_modules/rehype": {
+      "version": "13.0.2",
+      "resolved": "https://registry.npmjs.org/rehype/-/rehype-13.0.2.tgz",
+      "integrity": "sha512-j31mdaRFrwFRUIlxGeuPXXKWQxet52RBQRvCmzl5eCefn/KGbomK5GMHNMsOJf55fgo3qw5tST5neDuarDYR2A==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "rehype-parse": "^9.0.0",
+        "rehype-stringify": "^10.0.0",
+        "unified": "^11.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
+    "node_modules/rehype-attr": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/rehype-attr/-/rehype-attr-4.0.2.tgz",
+      "integrity": "sha512-v4+gw7pvUVLbG/dUpLgBE6r3TWTBYJ7z+sfAH3zapmM5CKzk5+CopFQgr4gMR6OBSKl/qpI6HR7gv1Cbig0uow==",
+      "license": "MIT",
+      "dependencies": {
+        "unified": "~11.0.0",
+        "unist-util-visit": "~5.0.0"
+      },
+      "engines": {
+        "node": ">=16"
+      },
+      "funding": {
+        "url": "https://jaywcjlove.github.io/#/sponsor"
+      }
+    },
+    "node_modules/rehype-attr/node_modules/unist-util-visit": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/unist-util-visit/-/unist-util-visit-5.0.0.tgz",
+      "integrity": "sha512-MR04uvD+07cwl/yhVuVWAtw+3GOR/knlL55Nd/wAdblk27GCVt3lqpTivy/tkJcZoNPzTwS1Y+KMojlLDhoTzg==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/unist": "^3.0.0",
+        "unist-util-is": "^6.0.0",
+        "unist-util-visit-parents": "^6.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
+    "node_modules/rehype-autolink-headings": {
+      "version": "7.1.0",
+      "resolved": "https://registry.npmjs.org/rehype-autolink-headings/-/rehype-autolink-headings-7.1.0.tgz",
+      "integrity": "sha512-rItO/pSdvnvsP4QRB1pmPiNHUskikqtPojZKJPPPAVx9Hj8i8TwMBhofrrAYRhYOOBZH9tgmG5lPqDLuIWPWmw==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "@ungap/structured-clone": "^1.0.0",
+        "hast-util-heading-rank": "^3.0.0",
+        "hast-util-is-element": "^3.0.0",
+        "unified": "^11.0.0",
+        "unist-util-visit": "^5.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
+    "node_modules/rehype-ignore": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/rehype-ignore/-/rehype-ignore-2.0.3.tgz",
+      "integrity": "sha512-IzhP6/u/6sm49sdktuYSmeIuObWB+5yC/5eqVws8BhuGA9kY25/byz6uCy/Ravj6lXUShEd2ofHM5MyAIj86Sg==",
+      "license": "MIT",
+      "dependencies": {
+        "hast-util-select": "^6.0.0",
+        "unified": "^11.0.0",
+        "unist-util-visit": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=16"
+      },
+      "funding": {
+        "url": "https://jaywcjlove.github.io/#/sponsor"
+      }
+    },
+    "node_modules/rehype-parse": {
+      "version": "9.0.1",
+      "resolved": "https://registry.npmjs.org/rehype-parse/-/rehype-parse-9.0.1.tgz",
+      "integrity": "sha512-ksCzCD0Fgfh7trPDxr2rSylbwq9iYDkSn8TCDmEJ49ljEUBxDVCzCHv7QNzZOfODanX4+bWQ4WZqLCRWYLfhag==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "hast-util-from-html": "^2.0.0",
+        "unified": "^11.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
+    "node_modules/rehype-prism-plus": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/rehype-prism-plus/-/rehype-prism-plus-2.0.2.tgz",
+      "integrity": "sha512-jTHb8ZtQHd2VWAAKeCINgv/8zNEF0+LesmwJak69GemoPVN9/8fGEARTvqOpKqmN57HwaM9z8UKBVNVJe8zggw==",
+      "license": "MIT",
+      "dependencies": {
+        "hast-util-to-string": "^3.0.1",
+        "parse-numeric-range": "^1.3.0",
+        "refractor": "^5.0.0",
+        "rehype-parse": "^9.0.1",
+        "unist-util-filter": "^5.0.1",
+        "unist-util-visit": "^5.1.0"
+      }
+    },
+    "node_modules/rehype-raw": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/rehype-raw/-/rehype-raw-7.0.0.tgz",
+      "integrity": "sha512-/aE8hCfKlQeA8LmyeyQvQF3eBiLRGNlfBJEvWH7ivp9sBqs7TNqBL5X3v157rM4IFETqDnIOO+z5M/biZbo9Ww==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "hast-util-raw": "^9.0.0",
+        "vfile": "^6.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
+    "node_modules/rehype-rewrite": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/rehype-rewrite/-/rehype-rewrite-4.0.4.tgz",
+      "integrity": "sha512-L/FO96EOzSA6bzOam4DVu61/PB3AGKcSPXpa53yMIozoxH4qg1+bVZDF8zh1EsuxtSauAhzt5cCnvoplAaSLrw==",
+      "license": "MIT",
+      "dependencies": {
+        "hast-util-select": "^6.0.0",
+        "unified": "^11.0.3",
+        "unist-util-visit": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=16.0.0"
+      },
+      "funding": {
+        "url": "https://jaywcjlove.github.io/#/sponsor"
+      }
+    },
+    "node_modules/rehype-slug": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/rehype-slug/-/rehype-slug-6.0.0.tgz",
+      "integrity": "sha512-lWyvf/jwu+oS5+hL5eClVd3hNdmwM1kAC0BUvEGD19pajQMIzcNUd/k9GsfQ+FfECvX+JE+e9/btsKH0EjJT6A==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "github-slugger": "^2.0.0",
+        "hast-util-heading-rank": "^3.0.0",
+        "hast-util-to-string": "^3.0.0",
+        "unist-util-visit": "^5.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
+    "node_modules/rehype-stringify": {
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/rehype-stringify/-/rehype-stringify-10.0.1.tgz",
+      "integrity": "sha512-k9ecfXHmIPuFVI61B9DeLPN0qFHfawM6RsuX48hoqlaKSF61RskNjSm1lI8PhBEM0MRdLxVVm4WmTqJQccH9mA==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/hast": "^3.0.0",
+        "hast-util-to-html": "^9.0.0",
+        "unified": "^11.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
     "node_modules/remark-gfm": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/remark-gfm/-/remark-gfm-4.0.1.tgz",
@@ -15422,6 +15959,21 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/remark-github-blockquote-alert": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/remark-github-blockquote-alert/-/remark-github-blockquote-alert-1.3.1.tgz",
+      "integrity": "sha512-OPNnimcKeozWN1w8KVQEuHOxgN3L4rah8geMOLhA5vN9wITqU4FWD+G26tkEsCGHiOVDbISx+Se5rGZ+D1p0Jg==",
+      "license": "MIT",
+      "dependencies": {
+        "unist-util-visit": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=16"
+      },
+      "funding": {
+        "url": "https://jaywcjlove.github.io/#/sponsor"
+      }
+    },
     "node_modules/remark-parse": {
       "version": "11.0.0",
       "resolved": "https://registry.npmjs.org/remark-parse/-/remark-parse-11.0.0.tgz",
@@ -16488,6 +17040,17 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/unist-util-filter": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/unist-util-filter/-/unist-util-filter-5.0.1.tgz",
+      "integrity": "sha512-pHx7D4Zt6+TsfwylH9+lYhBhzyhEnCXs/lbq/Hstxno5z4gVdyc2WEW0asfjGKPyG4pEKrnBv5hdkO6+aRnQJw==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/unist": "^3.0.0",
+        "unist-util-is": "^6.0.0",
+        "unist-util-visit-parents": "^6.0.0"
+      }
+    },
     "node_modules/unist-util-is": {
       "version": "6.0.1",
       "resolved": "https://registry.npmjs.org/unist-util-is/-/unist-util-is-6.0.1.tgz",
@@ -16688,6 +17251,20 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/vfile-location": {
+      "version": "5.0.3",
+      "resolved": "https://registry.npmjs.org/vfile-location/-/vfile-location-5.0.3.tgz",
+      "integrity": "sha512-5yXvWDEgqeiYiBe1lbxYF7UMAIm/IcopxMHrMQDq3nvKcjPKIhZklUKL+AE7J7uApI4kwe2snsK+eI6UTj9EHg==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/unist": "^3.0.0",
+        "vfile": "^6.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
     "node_modules/vfile-message": {
       "version": "4.0.3",
       "resolved": "https://registry.npmjs.org/vfile-message/-/vfile-message-4.0.3.tgz",
@@ -16924,6 +17501,16 @@
         "loose-envify": "^1.0.0"
       }
     },
+    "node_modules/web-namespaces": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/web-namespaces/-/web-namespaces-2.0.1.tgz",
+      "integrity": "sha512-bKr1DkiNa2krS7qxNtdrtHAmzuYGFQLiQ13TsorsdT6ULTkPLKuu5+GsFpDlg6JFjUTwX2DyhMPG2be8uPrqsQ==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/wooorm"
+      }
+    },
     "node_modules/web-streams-polyfill": {
       "version": "3.3.3",
       "resolved": "https://registry.npmjs.org/web-streams-polyfill/-/web-streams-polyfill-3.3.3.tgz",
diff --git a/package.json b/package.json
index 1e748596..9d1315c1 100644
--- a/package.json
+++ b/package.json
@@ -57,6 +57,7 @@
     "@tanstack/react-query": "^5.62.0",
     "@tanstack/react-router": "^1.93.0",
     "@tanstack/react-table": "^8.21.3",
+    "@uiw/react-md-editor": "^4.1.0",
     "@vidstack/react": "^1.12.13",
     "better-auth": "^1.6.2",
     "better-sqlite3": "^11.0.0",
diff --git a/src/components/admin/announcement-form-dialog.tsx b/src/components/admin/announcement-form-dialog.tsx
index e27c0468..f627dd66 100644
--- a/src/components/admin/announcement-form-dialog.tsx
+++ b/src/components/admin/announcement-form-dialog.tsx
@@ -1,6 +1,5 @@
-import { useEffect, useState } from 'react'
+import { lazy, Suspense, useEffect, useState } from 'react'
 import { useTranslation } from 'react-i18next'
-import { AnnouncementMarkdown } from '@/components/announcements/markdown-content'
 import { Button } from '@/components/ui/button'
 import {
   Dialog,
@@ -13,9 +12,14 @@ import {
 import { Input } from '@/components/ui/input'
 import { Label } from '@/components/ui/label'
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select'
-import { Textarea } from '@/components/ui/textarea'
 import type { Announcement, AnnouncementInput } from '@/lib/api'
 
+const AnnouncementMarkdownEditor = lazy(() =>
+  import('./announcement-markdown-editor').then((module) => ({
+    default: module.AnnouncementMarkdownEditor,
+  })),
+)
+
 interface AnnouncementFormDialogProps {
   open: boolean
   announcement: Announcement | null
@@ -73,7 +77,7 @@ export function AnnouncementFormDialog({
 
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent className="sm:max-w-2xl">
+      <DialogContent className="sm:max-w-4xl">
         <form onSubmit={handleSubmit} className="space-y-5">
           <DialogHeader>
             <DialogTitle>
@@ -89,24 +93,14 @@ export function AnnouncementFormDialog({
 
           <div className="space-y-2">
             <Label htmlFor="announcement-body">{t('admin.announcement.fieldBody')}</Label>
-            <div className="grid gap-3 md:grid-cols-2">
-              <Textarea
+            <Suspense fallback={<div className="h-[360px] rounded-md border bg-muted/20" />}>
+              <AnnouncementMarkdownEditor
                 id="announcement-body"
-                rows={10}
+                label={t('admin.announcement.fieldBody')}
                 value={body}
-                onChange={(event) => setBody(event.target.value)}
+                onChange={setBody}
               />
-              <div className="min-h-[240px] rounded-md border bg-muted/20 p-3">
-                <p className="mb-2 font-medium text-muted-foreground text-xs">
-                  {t('admin.announcement.markdownPreview')}
-                </p>
-                {body ? (
-                  <AnnouncementMarkdown content={body} />
-                ) : (
-                  <p className="text-muted-foreground text-sm">{t('admin.announcement.emptyPreview')}</p>
-                )}
-              </div>
-            </div>
+            </Suspense>
           </div>
 
           <div className="grid gap-4 md:grid-cols-2">
diff --git a/src/components/admin/announcement-markdown-editor.tsx b/src/components/admin/announcement-markdown-editor.tsx
new file mode 100644
index 00000000..9019cea2
--- /dev/null
+++ b/src/components/admin/announcement-markdown-editor.tsx
@@ -0,0 +1,34 @@
+import MDEditor from '@uiw/react-md-editor'
+import '@uiw/react-md-editor/markdown-editor.css'
+import '@uiw/react-markdown-preview/markdown.css'
+import { useTheme } from 'next-themes'
+
+interface AnnouncementMarkdownEditorProps {
+  id: string
+  label: string
+  value: string
+  onChange: (value: string) => void
+}
+
+export function AnnouncementMarkdownEditor({ id, label, value, onChange }: AnnouncementMarkdownEditorProps) {
+  const { resolvedTheme } = useTheme()
+
+  return (
+    <div data-color-mode={resolvedTheme === 'dark' ? 'dark' : 'light'}>
+      <MDEditor
+        className="overflow-hidden rounded-md border"
+        height={360}
+        minHeight={240}
+        maxHeight={720}
+        preview="live"
+        textareaProps={{
+          id,
+          'aria-label': label,
+        }}
+        value={value}
+        visibleDragbar
+        onChange={(nextValue) => onChange(nextValue ?? '')}
+      />
+    </div>
+  )
+}
diff --git a/src/i18n/locales/en.json b/src/i18n/locales/en.json
index 1755d770..d28ba670 100644
--- a/src/i18n/locales/en.json
+++ b/src/i18n/locales/en.json
@@ -206,8 +206,6 @@
   "admin.announcement.fieldPriority": "Priority",
   "admin.announcement.fieldPublishedAt": "Published At",
   "admin.announcement.fieldExpiresAt": "Expires At",
-  "admin.announcement.markdownPreview": "Markdown Preview",
-  "admin.announcement.emptyPreview": "Nothing to preview",
   "admin.users.resendInvite": "Resend Invite",
   "admin.users.revokeInvite": "Revoke Invite",
   "admin.users.inviteStatus.pending": "Pending",
diff --git a/src/i18n/locales/zh.json b/src/i18n/locales/zh.json
index 8407bb55..3932f3d1 100644
--- a/src/i18n/locales/zh.json
+++ b/src/i18n/locales/zh.json
@@ -206,8 +206,6 @@
   "admin.announcement.fieldPriority": "优先级",
   "admin.announcement.fieldPublishedAt": "发布时间",
   "admin.announcement.fieldExpiresAt": "过期时间",
-  "admin.announcement.markdownPreview": "Markdown 预览",
-  "admin.announcement.emptyPreview": "暂无可预览内容",
   "admin.users.resendInvite": "重新发送邀请",
   "admin.users.revokeInvite": "撤销邀请",
   "admin.users.inviteStatus.pending": "待使用",