feat(codespaces): .devcontainer + auto-setup & auto-run (Step 10) + rapikan README

.devcontainer/devcontainer.json

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+{
+  "name": "OPEN-ISP",
+  "image": "mcr.microsoft.com/devcontainers/javascript-node:1-22-bookworm",
+  "features": {
+    "ghcr.io/devcontainers/features/github-cli:1": {}
+  },
+  "forwardPorts": [3001],
+  "portsAttributes": {
+    "3001": { "label": "OPEN-ISP", "onAutoForward": "openPreview" }
+  },
+  "postCreateCommand": "bash .devcontainer/setup.sh",
+  "postStartCommand": "bash .devcontainer/start.sh",
+  "customizations": {
+    "vscode": { "extensions": ["dbaeumer.vscode-eslint"] }
+  },
+  "remoteUser": "node"
+}

.devcontainer/setup.sh

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+#!/usr/bin/env bash
+# Setup otomatis OPEN-ISP di GitHub Codespaces
+set -e
+cd "$(dirname "$0")/.."
+
+echo "==> [OPEN-ISP] Menyiapkan dependensi sistem…"
+sudo apt-get update -qq && sudo apt-get install -y -qq build-essential python3 >/dev/null 2>&1 || true
+
+echo "==> [OPEN-ISP] Install dependensi npm…"
+npm ci --omit=dev || npm install --omit=dev
+
+echo "==> [OPEN-ISP] Siapkan file .env…"
+[ -f .env ] || cp env-example.txt .env
+
+echo "==> [OPEN-ISP] Siapkan data demo…"
+node scripts/seed-demo.js || true
+
+echo "==> [OPEN-ISP] Selesai. Aplikasi akan dijalankan otomatis di port 3001."

.devcontainer/start.sh

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+#!/usr/bin/env bash
+# Jalankan OPEN-ISP otomatis saat Codespace aktif
+cd "$(dirname "$0")/.."
+if pgrep -f "node app-customer.js" >/dev/null 2>&1; then
+  echo "==> [OPEN-ISP] Aplikasi sudah berjalan."
+  exit 0
+fi
+echo "==> [OPEN-ISP] Menjalankan aplikasi di background (port 3001)…"
+nohup node app-customer.js > /tmp/open-isp.log 2>&1 &
+sleep 3
+echo "==> [OPEN-ISP] Log: /tmp/open-isp.log"