feat: implement Design Buddy AI interior design application

- Replace boilerplate with complete Design Buddy application
- Add AI-powered room design generation using Google Gemini SDK
- Implement user authentication with Google OAuth via Better Auth
- Create credit system with 30 free credits for new users
- Build image upload interface with drag-and-drop functionality
- Add room type and design style selection (Living Room, Kitchen, etc.)
- Implement AI generation with geographical restriction handling
- Add credit refund system for API failures
- Create responsive landing page with feature sections
- Replace all branding and navigation with Design Buddy theme
- Add complete user dashboard with real-time credit balance
- Implement download functionality for generated designs

🤖 Generated with [Claude Code](https://claude.ai/code)

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

drizzle/0000_shiny_the_executioner.sql

@@ -0,0 +1,50 @@
+CREATE TABLE "account" (
+	"id" text PRIMARY KEY NOT NULL,
+	"accountId" text NOT NULL,
+	"providerId" text NOT NULL,
+	"userId" text NOT NULL,
+	"accessToken" text,
+	"refreshToken" text,
+	"idToken" text,
+	"accessTokenExpiresAt" timestamp,
+	"refreshTokenExpiresAt" timestamp,
+	"scope" text,
+	"password" text,
+	"createdAt" timestamp DEFAULT now() NOT NULL,
+	"updatedAt" timestamp DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "session" (
+	"id" text PRIMARY KEY NOT NULL,
+	"expiresAt" timestamp NOT NULL,
+	"token" text NOT NULL,
+	"createdAt" timestamp DEFAULT now() NOT NULL,
+	"updatedAt" timestamp DEFAULT now() NOT NULL,
+	"ipAddress" text,
+	"userAgent" text,
+	"userId" text NOT NULL,
+	CONSTRAINT "session_token_unique" UNIQUE("token")
+);
+--> statement-breakpoint
+CREATE TABLE "user" (
+	"id" text PRIMARY KEY NOT NULL,
+	"name" text NOT NULL,
+	"email" text NOT NULL,
+	"emailVerified" boolean,
+	"image" text,
+	"createdAt" timestamp DEFAULT now() NOT NULL,
+	"updatedAt" timestamp DEFAULT now() NOT NULL,
+	CONSTRAINT "user_email_unique" UNIQUE("email")
+);
+--> statement-breakpoint
+CREATE TABLE "verification" (
+	"id" text PRIMARY KEY NOT NULL,
+	"identifier" text NOT NULL,
+	"value" text NOT NULL,
+	"expiresAt" timestamp NOT NULL,
+	"createdAt" timestamp DEFAULT now(),
+	"updatedAt" timestamp DEFAULT now()
+);
+--> statement-breakpoint
+ALTER TABLE "account" ADD CONSTRAINT "account_userId_user_id_fk" FOREIGN KEY ("userId") REFERENCES "public"."user"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "session" ADD CONSTRAINT "session_userId_user_id_fk" FOREIGN KEY ("userId") REFERENCES "public"."user"("id") ON DELETE cascade ON UPDATE no action;