added base examples and drills

kata/shipping/original/README.md

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+# shipping original
+
+Messy shipping logic mixing eligibility, cost calculation, randomness, time, logging, and file I/O.

kata/shipping/original/shippingService.js

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+const fs = require("fs");
+
+function shipOrder(filePath, orderId, destinationCountry) {
+  const raw = fs.readFileSync(filePath, "utf8");
+  const state = JSON.parse(raw);
+  const order = state.orders.find((item) => item.id === orderId);
+
+  if (!order) {
+    throw new Error("Order not found");
+  }
+
+  if (order.status === "shipped") {
+    return { message: "Already shipped", trackingNumber: order.trackingNumber };
+  }
+
+  let shippingCost = 5;
+
+  if (destinationCountry !== "US") {
+    shippingCost = shippingCost + 15;
+  }
+
+  if (order.weightKg > 10) {
+    shippingCost = shippingCost + 20;
+  }
+
+  order.status = "shipped";
+  order.shippingCost = shippingCost;
+  order.trackingNumber = "trk-" + Math.floor(Math.random() * 100000);
+  order.shippedAt = new Date().toISOString();
+
+  fs.writeFileSync(filePath, JSON.stringify(state, null, 2));
+  console.log("Order shipped", orderId);
+
+  return { message: "Shipped", trackingNumber: order.trackingNumber, shippingCost };
+}
+
+module.exports = { shipOrder };

kata/shipping/original/state.json

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+{
+  "orders": [
+    {
+      "id": "ord-1",
+      "status": "paid",
+      "weightKg": 12,
+      "shippingCost": 0,
+      "trackingNumber": null,
+      "shippedAt": null
+    }
+  ]
+}