fix: add 5-second buffer after PostgreSQL startup before database operations

- PostgreSQL reports ready (SELECT 1 succeeds) but internal initialization still in progress
- Add explicit 5-second sleep after 'PostgreSQL is ready' message
- Ensures database system fully initialized before creating/seeding test database
- Prevents 'database system is starting up' errors
- Also increase sleep after database creation from 1s to 2s for stability

local-dev-2.sh

@@ -71,10 +71,14 @@ if [ $STARTUP_ATTEMPT -eq $MAX_STARTUP_ATTEMPTS ]; then
   exit 1
 fi
 
+# --- 3a-extra. Additional wait for full PostgreSQL initialization ---
+log_step "Allowing PostgreSQL to fully initialize..."
+sleep 5
+
 # --- 3b. Create Test Database ---
 log_step "Setting up test database (crussell_test)..."
 docker exec postgres psql -U myuser -d mydb -c "CREATE DATABASE crussell_test;" 2>&1 || log_info "Test database may already exist"
-sleep 1
+sleep 2
 
 # --- 3c. Seed Test Database Schema ---
 log_step "Seeding test database schema..."