feat: add full-stack achievements system

- add achievement schema, migrations, evaluators, APIs, and backfill support on the server
- add achievements UI, composables, toast utilities, and tests on the client
- add shared achievement/auth/notification type updates

server/package.json

@@ -69,6 +69,7 @@
     "cheerio": "^1.2.0",
     "class-transformer": "^0.5.1",
     "class-validator": "^0.15.1",
+    "date-fns-tz": "^3.2.0",
     "drizzle-orm": "^0.45.2",
     "fast-xml-parser": "^5.8.0",
     "fastest-levenshtein": "^1.0.16",
@@ -93,10 +94,10 @@
     "zod": "^4.4.3"
   },
   "devDependencies": {
-    "@ffmpeg-installer/ffmpeg": "^1.1.0",
-    "@ffprobe-installer/ffprobe": "^2.1.2",
     "@eslint/eslintrc": "^3.3.5",
     "@eslint/js": "^10.0.1",
+    "@ffmpeg-installer/ffmpeg": "^1.1.0",
+    "@ffprobe-installer/ffprobe": "^2.1.2",
     "@nestjs/cli": "^11.0.21",
     "@nestjs/schematics": "^11.1.0",
     "@nestjs/testing": "^11.1.21",