chore: establish travel planner pnpm workspace

package.json

@@ -0,0 +1,25 @@
+{
+  "name": "travel-planner",
+  "private": true,
+  "packageManager": "pnpm@10.15.0",
+  "engines": {
+    "node": ">=24.15.0 <25"
+  },
+  "scripts": {
+    "lint": "pnpm -r --if-present run lint",
+    "test": "pnpm -r --if-present run test",
+    "build": "pnpm -r --if-present run build",
+    "dev:infra": "docker compose -f compose.dev.yml up -d --wait",
+    "dev:infra:down": "docker compose -f compose.dev.yml down",
+    "test:compose": "node --test tests/compose-invariants.test.mjs"
+  },
+  "pnpm": {
+    "onlyBuiltDependencies": [
+      "@parcel/watcher",
+      "esbuild",
+      "lmdb",
+      "msgpackr-extract",
+      "unrs-resolver"
+    ]
+  }
+}