v1.6.5: fix attendance unique constraint, schema sync, seed script

- Change attendance idx_attendance_user_date from unique to index (allow multiple shifts per day)
- Reset migrations to single baseline init migration
- Add seed script with admin user (admin/admin)
- Update CLAUDE.md with migration workflow documentation
- Various frontend fixes (queries, pages, hooks)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "app-ts",
-  "version": "1.6.4",
+  "version": "1.6.5",
   "description": "",
   "main": "dist/server.js",
   "scripts": {
@@ -18,7 +18,11 @@
     "db:studio": "prisma studio",
     "test": "vitest run",
     "test:watch": "vitest",
-    "bones": "boneyard-js build http://localhost:3000"
+    "bones": "boneyard-js build http://localhost:3000",
+    "seed": "tsx prisma/seed.ts"
+  },
+  "prisma": {
+    "seed": "tsx prisma/seed.ts"
   },
   "keywords": [],
   "author": "",