feat: remove start.sh script and add appearance preferences management

- Deleted the start.sh script for container management.
- Added AGENTS.md for project guidelines and development principles.
- Introduced new SQL migration files for user appearance preferences and platform settings.
- Implemented appearance provider to manage user interface themes and preferences.
- Created branding utility to define and manage branding-related constants and types.

Co-authored-by: Copilot <copilot@github.com>

package.json

@@ -7,12 +7,12 @@
     "build": "next build",
     "check": "eslint . && tsc --noEmit",
     "db:generate": "drizzle-kit generate",
-    "db:migrate": "bun src/server/db/migrate.ts",
+    "db:migrate": "bun drizzle-kit migrate",
     "db:push": "drizzle-kit push",
     "db:studio": "drizzle-kit studio",
     "db:clone": "./scripts/clone-local.sh",
-    "docker:up": "colima start && docker-compose up -d",
-    "docker:down": "docker-compose down && colima stop",
+    "docker:up": "colima start && docker compose up -d",
+    "docker:down": "docker compose down && colima stop",
     "deploy": "drizzle-kit push && next build",
     "dev": "next dev --turbo",
     "format:check": "prettier --check \"**/*.{ts,tsx,js,jsx,mdx}\" --cache",
@@ -64,6 +64,7 @@
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "date-fns": "^4.1.0",
+    "dotenv": "^17.2.3",
     "drizzle-orm": "^0.44.7",
     "file-saver": "^2.0.5",
     "framer-motion": "^12.23.26",
@@ -92,7 +93,6 @@
     "@types/react": "^19.2.7",
     "@types/react-dom": "^19.2.3",
     "baseline-browser-mapping": "^2.9.6",
-    "dotenv": "^17.2.3",
     "drizzle-kit": "^0.30.6",
     "eslint": "^9.39.1",
     "eslint-config-next": "^16.0.10",