remove config module import from content.js and add rebuild-api.sh script for Docker management

src/content.js

@@ -1,6 +1,5 @@
 const { extract } = require('@extractus/article-extractor');
 const sharp = require('sharp');
-const config = require('./config');
 const db = require('./db');
 const { generateAndStoreEmbedding } = require('./embeddings');
 const { fetchWithPolicy } = require('./http');
@@ -211,7 +210,7 @@ async function fetchAndStoreContent(id, url) {
   }
 }
 
-async function backfillMissingContent(limit = config.contentBackfill.batchSize || 10) {
+async function backfillMissingContent(limit = 10) {
   if (contentBackfillRunning) {
     return;
   }