feat: establish unified project foundation with root config cleanup

- Archive legacy packages/, services/, server/ directories
- Update pnpm workspace to web + browser-ext
- Simplify root package.json scripts to delegate to web/
- Update turbo.json for new workspace structure
- Remove obsolete root config files (vite, tsconfig, etc.)
- Add .nvmrc, .editorconfig for consistent dev environment
- Update CI workflow to remove references to deleted packages
- Add missing dependencies (@tailwindcss/vite, tailwindcss) to web
- Add test and lint scripts to web package
- Verify pnpm install, build, and dev work correctly

infra/modules/elasticache/main.tf

@@ -1,102 +0,0 @@
-variable "environment" {
-  description = "Deployment environment"
-  type        = string
-}
-
-variable "vpc_id" {
-  description = "VPC ID"
-  type        = string
-}
-
-variable "subnet_ids" {
-  description = "Private subnet IDs"
-  type        = list(string)
-}
-
-variable "security_group_id" {
-  description = "ElastiCache security group ID"
-  type        = string
-}
-
-variable "node_type" {
-  description = "Cache node type"
-  type        = string
-}
-
-variable "num_nodes" {
-  description = "Number of cache nodes"
-  type        = number
-}
-
-variable "project_name" {
-  description = "Project name"
-  type        = string
-}
-
-resource "aws_elasticache_subnet_group" "main" {
-  name       = "${var.project_name}-${var.environment}-redis-subnet"
-  subnet_ids = var.subnet_ids
-
-  tags = {
-    Name = "${var.project_name}-${var.environment}-redis-subnet"
-  }
-}
-
-resource "random_password" "redis_auth" {
-  length  = 32
-  special = false
-
-  keepers = {
-    environment = var.environment
-  }
-}
-
-resource "aws_elasticache_replication_group" "main" {
-  replication_group_id = "${var.project_name}-${var.environment}-redis"
-  description          = "${var.project_name} Redis cluster (${var.environment})"
-
-  node_type      = var.node_type
-  num_cache_clusters = var.num_nodes
-  engine         = "redis"
-  engine_version = "7.0"
-
-  auth_token = random_password.redis_auth.result
-
-  transit_encryption_enabled = true
-  at_rest_encryption_enabled = true
-
-  port = 6379
-
-  subnet_group_name   = aws_elasticache_subnet_group.main.name
-  security_group_ids  = [var.security_group_id]
-
-  automatic_failover_enabled = var.environment == "production"
-
-  snapshot_retention_limit = var.environment == "production" ? 7 : 1
-  snapshot_window          = "03:00-04:00"
-
-  tags = {
-    Name = "${var.project_name}-${var.environment}-redis"
-  }
-}
-
-output "cache_endpoint" {
-  description = "ElastiCache primary endpoint"
-  value       = aws_elasticache_replication_group.main.primary_endpoint_address
-}
-
-output "reader_endpoint" {
-  description = "ElastiCache reader endpoint"
-  value       = aws_elasticache_replication_group.main.reader_endpoint_address
-}
-
-output "auth_token" {
-  description = "Redis auth token"
-  value       = random_password.redis_auth.result
-  sensitive   = true
-}
-
-output "replication_group_arn" {
-  description = "ElastiCache replication group ARN"
-  value       = aws_elasticache_replication_group.main.arn
-}