refactor(contentlayer): use our own topics index

- start using our own topics index instead of optech's
- add different display option for misc topics in categories

contentlayer.config.ts

@@ -120,13 +120,23 @@ function generateCategorizedList(processedTopics: Map<string, ProcessedTopic>):
       if (!categorizedTopics[category]) {
         categorizedTopics[category] = [];
       }
-      categorizedTopics[category].push({ name, slug, count });
+
+      // Check if topic name contains category name and ends with "(Miscellaneous)"
+      const modifiedName = name.includes(category) && name.endsWith("(Miscellaneous)") 
+        ? "Miscellaneous"
+        : name;
+
+      categorizedTopics[category].push({ name: modifiedName, slug, count });
     });
   });
 
   // Sort topics within each category
   Object.values(categorizedTopics).forEach(topics => {
-    topics.sort((a, b) => a.name.localeCompare(b.name));
+    topics.sort((a, b) => {
+      if (a.name == "Miscellaneous") return 1;
+      if (b.name == "Miscellaneous") return -1;
+      return a.name.localeCompare(b.name)
+    });
   });
 
   return categorizedTopics;

scripts/fetchTopics.js

@@ -2,7 +2,7 @@ const fs = require("fs");
 const path = require("path");
 const https = require("https");
 
-const url = "https://bitcoinops.org/topics.json";
+const url = "https://raw.githubusercontent.com/bitcoinsearch/topics-index/refs/heads/main/topics.json";
 const outputPath = path.join(__dirname, "..", "public", "topics.json");
 
 https