feat: add product distributor research table and integrate distributor analysis in Stalker product workflow

src/stalker/stalker-analyze.ts

@@ -1,4 +1,4 @@
-import { db } from "../db/index.ts";
+import { client, db } from "../db/index.ts";
 import { persistLlmResults, refreshRunStats } from "../db/persistence.ts";
 import { sql } from "drizzle-orm";
 import { normalizeAsin } from "../asin.ts";
@@ -261,8 +261,15 @@ async function main(): Promise<void> {
 }
 
 if (import.meta.main) {
-  main().catch((error) => {
-    console.error(error instanceof Error ? error.message : String(error));
-    process.exit(1);
-  });
+  main()
+    .catch((error) => {
+      console.error(error instanceof Error ? error.message : String(error));
+      process.exitCode = 1;
+    })
+    .finally(async () => {
+      try {
+        await client.end({ timeout: 5 });
+      } catch {
+      }
+    });
 }