Improve fresh local setup flow

README.md

@@ -121,7 +121,27 @@ Or run `npx echo-start my-app` to choose interactively.
 
 # Development
 
-Fill out `packages/app/control/.env` and `packages/app/server/.env`. Then...
+Prerequisites:
 
-- `pnpm i`
-- `pnpm dev`
+- Node.js 18 or newer
+- pnpm 10.11.0 or newer
+- Docker with Docker Compose
+
+From a fresh clone:
+
+```bash
+pnpm i
+pnpm dev
+```
+
+`pnpm dev` runs the local setup step automatically. It creates
+`packages/app/control/.env` from `.env.example` when needed, generates a local
+`AUTH_SECRET`, sets the local PostgreSQL `DATABASE_URL`, starts the Docker
+PostgreSQL container, applies Prisma migrations, and starts the control app plus
+router server.
+
+If `pnpm` is not available yet, install the pinned version first:
+
+```bash
+npm install -g pnpm@10.11.0
+```

package.json

@@ -5,6 +5,7 @@
   "private": true,
   "packageManager": "pnpm@10.11.0",
   "scripts": {
+    "predev": "pnpm run local-setup",
     "dev": "turbo run dev --filter=echo-control --filter=echo-server",
     "local-setup": "turbo run local-setup --filter=echo-control",
     "build": "turbo run build --env-mode=loose",

packages/app/control/scripts/setup.sh

@@ -1,20 +1,65 @@
 #!/bin/bash
 
-# Check if .env file exists and if AUTH_SECRET is already set
-if [ -f .env ] && grep -q "^AUTH_SECRET=" .env; then
-    echo "AUTH_SECRET already exists in .env file. Skipping generation."
-else
-    echo "Generating AUTH_SECRET..."
-    AUTH_SECRET=$(node -e "console.log('AUTH_SECRET=' + require('crypto').randomBytes(32).toString('base64'))")
-    echo $AUTH_SECRET
-    echo $AUTH_SECRET >> .env
-fi
-
-# Check if DATABASE_URL is already set
-if [ -f .env ] && grep -q "^DATABASE_URL=" .env; then
-    echo "DATABASE_URL already exists in .env file. Skipping."
-else
-    echo "DATABASE_URL='postgresql://echo_user:echo_password@localhost:5469/echo_control_v2?schema=public'" >> .env
-fi
-
-echo "Setup complete! You can now run 'pnpm dev' to start the development server."
+set -euo pipefail
+
+ENV_FILE=".env"
+DATABASE_URL_VALUE='"postgresql://echo_user:echo_password@localhost:5469/echo_control_v2?schema=public"'
+
+ensure_env_file() {
+    if [ -f "$ENV_FILE" ]; then
+        return
+    fi
+
+    if [ -f ".env.example" ]; then
+        cp ".env.example" "$ENV_FILE"
+        echo "Created $ENV_FILE from .env.example."
+    else
+        touch "$ENV_FILE"
+        echo "Created empty $ENV_FILE."
+    fi
+}
+
+env_value() {
+    local key="$1"
+    grep -E "^${key}=" "$ENV_FILE" | tail -n 1 | cut -d= -f2- | tr -d "\"'"
+}
+
+set_env_value() {
+    local key="$1"
+    local value="$2"
+    local current
+
+    current="$(env_value "$key" || true)"
+    if [ -n "$current" ]; then
+        echo "$key already exists in $ENV_FILE. Skipping."
+        return
+    fi
+
+    if grep -qE "^${key}=" "$ENV_FILE"; then
+        local temp_file
+        temp_file="$(mktemp)"
+        awk -v key="$key" -v replacement="${key}=${value}" '
+            BEGIN { replaced = 0 }
+            $0 ~ "^" key "=" && replaced == 0 {
+                print replacement
+                replaced = 1
+                next
+            }
+            { print }
+        ' "$ENV_FILE" > "$temp_file"
+        mv "$temp_file" "$ENV_FILE"
+    else
+        printf "%s=%s\n" "$key" "$value" >> "$ENV_FILE"
+    fi
+
+    echo "Set $key in $ENV_FILE."
+}
+
+ensure_env_file
+
+AUTH_SECRET_VALUE="\"$(node -e "process.stdout.write(require('crypto').randomBytes(32).toString('base64'))")\""
+
+set_env_value "AUTH_SECRET" "$AUTH_SECRET_VALUE"
+set_env_value "DATABASE_URL" "$DATABASE_URL_VALUE"
+
+echo "Setup complete. You can now run 'pnpm dev' to start the development server."

packages/sdk/examples/next-402-chat/package.json

@@ -7,7 +7,7 @@
     "build": "next build --turbopack",
     "start": "next start",
     "lint": "biome check --write",
-    "postinstall": "npm dedupe || true"
+    "postinstall": "node -e \"if (!(process.env.npm_config_user_agent || '').includes('pnpm')) require('child_process').execSync('npm dedupe', { stdio: 'inherit' })\" || true"
   },
   "dependencies": {
     "@ai-sdk/openai": "2.0.16",