chore: add techbase to apps-archived

Integrated techbase (software comparison platform) into monorepo structure:
- Created NestJS backend with votes and comments modules
- Migrated from external Supabase to own PostgreSQL
- Set up Drizzle ORM schema for votes and comments
- Created API client replacing Supabase in Astro frontend
- Added environment configuration (port 3021)

Archived immediately as it's not yet ready for active development.

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

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

apps-archived/techbase/apps/backend/src/app.module.ts

@@ -0,0 +1,20 @@
+import { Module } from '@nestjs/common';
+import { ConfigModule } from '@nestjs/config';
+import { DatabaseModule } from './db/database.module';
+import { HealthModule } from './health/health.module';
+import { VotesModule } from './votes/votes.module';
+import { CommentsModule } from './comments/comments.module';
+
+@Module({
+	imports: [
+		ConfigModule.forRoot({
+			isGlobal: true,
+			envFilePath: '.env',
+		}),
+		DatabaseModule,
+		HealthModule,
+		VotesModule,
+		CommentsModule,
+	],
+})
+export class AppModule {}