added a script to check for dupe comments

scripts/check_dupes.py

@@ -0,0 +1,14 @@
+import json
+
+comments = json.load(open("docs/comments.json", encoding="utf-8"))
+seen, dupes = {}, 0
+
+for i, c in enumerate(comments):
+    k = (c.get("id",""), c.get("text",""), c.get("timestamp",0))
+    if k in seen: 
+        dupes += 1; 
+        print(f"  Index {i} dupes {seen[k]} | id={k[0]} | ts={k[2]} | text={k[1][:80]}")
+    else: 
+        seen[k] = i
+
+print(f"Found {dupes} duplicate(s)" if dupes else f"No duplicates among us.")

scripts/check_dupes.rs

@@ -0,0 +1,34 @@
+use std::{collections::HashMap, fs};
+use serde_json::Value;
+
+fn main() {
+  let comments: Vec<Value> =
+    serde_json::from_str(&fs::read_to_string("docs/comments.json").unwrap()).unwrap();
+  let mut seen: HashMap<(String, String, i64), usize> = HashMap::new();
+  let mut dupes = 0;
+  for (i, c) in comments.iter().enumerate() {
+    let k = (
+      c["id"].as_str().unwrap_or("").into(),
+      c["text"].as_str().unwrap_or("").into(),
+      c["timestamp"].as_i64().unwrap_or(0),
+    );
+    
+    if let Some(&first) = seen.get(&k) {
+      dupes += 1;
+      println!(
+        "  Index {} dupes index {} | id={} | ts={} | text={:.80}",
+        i, first, k.0, k.2, k.1
+      );
+    } else {
+      seen.insert(k, i);
+    }
+  }
+  println!(
+    "{}",
+    if dupes > 0 {
+      format!("Found {} duplicate(s)", dupes)
+    } else {
+      format!("No duplicates among {} comments.", comments.len())
+    }
+  );
+}