added base examples and drills

kata/moderation/original/README.md

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+# moderation original
+
+Messy moderation logic mixing policy rules, time, logging, mutation, and file I/O.

kata/moderation/original/moderationService.js

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+const fs = require("fs");
+
+function reviewPost(filePath, postId) {
+  const raw = fs.readFileSync(filePath, "utf8");
+  const state = JSON.parse(raw);
+  const post = state.posts.find((item) => item.id === postId);
+
+  if (!post) {
+    throw new Error("Post not found");
+  }
+
+  let action = "approve";
+
+  if (post.text.includes("buy now") || post.text.includes("free money")) {
+    action = "reject";
+  }
+
+  if (post.reports > 3) {
+    action = "escalate";
+  }
+
+  post.status = action;
+  post.reviewedAt = new Date().toISOString();
+  fs.writeFileSync(filePath, JSON.stringify(state, null, 2));
+  console.log("Moderation action", postId, action);
+
+  return { action };
+}
+
+module.exports = { reviewPost };

kata/moderation/original/state.json

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+{
+  "posts": [
+    {
+      "id": "post-1",
+      "text": "free money if you buy now",
+      "reports": 1,
+      "status": "pending",
+      "reviewedAt": null
+    }
+  ]
+}